K/Ar and ⁴⁰Ar/³⁹Ar Data Repository (KArAr)

K/Ar and ⁴⁰Ar/³⁹Ar geochronology results including ages recalculated against community-agreed standards and constants.

Browse the current and recent KArAr Data Models:

Loading
Click on a table/group/column name:
Updated on April 1st, 2025.
1.Contribution, contribution
12
Contribution metadata
Contribution Group
12
1.1Contribution ID, idIntegerUnique contribution id
Download Only
Description:Unique contribution id
Notes:Written during contribution publication..
Type:Integer
Examples:32
1432
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:contribution.id
1.2Version, versionIntegerContribution version number
Download Only
Description:Contribution version number
Notes:1 for original contribution, 6 for latest contribution if there are 6 versions, empty if the contribution has not been published. Written during contribution publication.
Type:Integer
Examples:1
2

6
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:contribution.version
1.3Publication Timestamp, timestampTimestampDate and time of contribution publication
Download Only
Description:Date and time of contribution publication
Notes:ISO 8601 date and time (e.g. "yyyy-mm-ddThh:mm:ss.sssZ"). See wikipedia.org/wiki/ISO_8601 for detailed explanation.
Type:Timestamp
Examples:2021-01-01T10:02:34.87
2020-07-20T22:56:15-04:00
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:contribution.timestamp
1.4Contributor, contributorStringContributor EarthRef handle
Download Only
Description:Contributor EarthRef handle
Notes:Written during contribution publication
Type:String
Example:@najmagic
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:contribution.contributor
1.5Is Validated, is_validatedFlagContribution has passed the data model validation
Download Only
Vocabulary
Description:Contribution has passed the data model validation
Type:String
Unit:Flag
Examples:True
False
Validations:
Vocabulary
Any values in this column must contain a value found in the Boolean Flags controlled vocabulary.

Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:contribution.is_validated
1.6Is Reviewed, is_reviewedFlagContribution has been data has been reviewed
Download Only
Vocabulary
Description:Contribution has been data has been reviewed
Type:String
Unit:Flag
Examples:True
False
Validations:
Vocabulary
Any values in this column must contain a value found in the Boolean Flags controlled vocabulary.

Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:contribution.is_reviewed
1.7Data Model Version, data_model_versionStringKArAr data model version
Download Only
Vocabulary
Description:KArAr data model version
Notes:Written during contribution publication
Type:String
Examples:1.0
1.2
Validations:
Vocabulary
Any values in this column must contain a value found in the KArAr_version controlled vocabulary.

Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:contribution.data_model_version
1.8Contribution Reference, referenceStringDOI or URL for the document describing this dataset
Required
Validation
Description:DOI or URL for the document describing this dataset
Notes:The DOI must resolve to a document or the URL to a web page. Note the use of double quotes when the title contains colons.
Type:String
Examples:10.1126/SCIENCE.ADE8666
10.1038/S41467-018-03277-X

https://my-university.edu/my_phd_thesis.pdf
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

Required
The values in this column must not be empty.
1.0 Column:contribution.reference
1.9Funding, fundingDictionaryDictionary of grant titles and grant urls that supported the creation of the dataset
Description:Dictionary of grant titles and grant urls that supported the creation of the dataset
Type:Dictionary
Examples:"Collaborative Research: EarthCube Capabilities: Repurposing FAIR-Compliant Earth Science Data Repositories[https://www.nsf.gov/awardsearch/showAward?AWD_ID=2126427]":"Collaborative Research: EarthCube Capabilities: Repurposing FAIR-Compliant Earth Science Data Repositories[https://www.nsf.gov/awardsearch/simpleSearchResult?queryText=2126298]"
NASA Discovery Program (contract NNM16AA09C)[https://govtribe.com/award/federal-contract-award/definitive-contract-nnm16aa09c]
1.0 Column:contribution.funding
1.10Laboratory Names, lab_namesListList of labs (with institution and country) where the measurements in the contribution were made
Required (?)
Vocabulary
Description:List of labs (with institution and country) where the measurements in the contribution were made
Notes:Please contact KArAr if a lab needs to be added to the lab list
Type:List
Examples:OSU Argon Geochronology Lab (Oregon State University, USA)
Argon Geochronology (Australian National University, Australia)
Validations:
Vocabulary
Any values in this column must contain a value found in the Laboratory Names controlled vocabulary.

requiredUnlessLegacy()
1.0 Column:contribution.lab_names
1.11Supplemental Data Links, supplemental_linksDictionaryDisplay name for the link and the DOI or permanent URL to the supplemental data
Description:Display name for the link and the DOI or permanent URL to the supplemental data
Notes:The DOI must resolve to a publisher or the URL to a web page
Type:Dictionary
Examples:Paleointensity Data[10.7288/V4/MAGIC/19461]
Geochemistry Data[https://earthref.org/ERDA/192/]:PADM2M Field Model[https://earthref.org/ERDA/1138/]
1.0 Column:contribution.supplemental_links
1.12Description, descriptionStringContribution description and update comments
Recommended
Description:Contribution description and update comments
Type:String
Example:Fixes errors in latitudes and adds measurement data
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:contribution.description
2.Samples, samples
42
Samples collected
Contribution Group
2
2.1Contribution ID, contribution_idIntegerUnique KArAr Contribution ID
Download Only
Description:Unique KArAr Contribution ID
Notes:Written during contribution publication
Type:Integer
Example:5412
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:samples.contribution_id
2.2Contribution Row ID, row_idIntegerUnique row ID within a KArAr Contribution
Download Only
Description:Unique row ID within a KArAr Contribution
Notes:Written during contribution publication
Type:Integer
Example:743
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:samples.row_id
Description Group
6
2.3Sample Name, sampleStringName of the sample
Required
Description:Name of the sample
Notes:It is preferred that the sample name is an IGSN
Type:String
Examples:ICDP5054EXF4601
SFVP01-03
Validations:key()
Required
The values in this column must not be empty.
1.0 Column:samples.sample
2.4Sample IGSN, igsnStringInternational Generic Sample Number (IGSN) of the sample. See https://datacite.org/igsn/
Required
Validation
Description:International Generic Sample Number (IGSN) of the sample. See https://datacite.org/igsn/
Type:String
Example:ICDP5054EXF4601
Validations:
Validation
Any values in this column must contain a valid International Geo Sample Number.

Required
The values in this column must not be empty.
1.0 Column:samples.igsn
2.5Sample Name Alternatives, sample_alternativesListColon-delimited list of alternative names and abbreviations
Description:Colon-delimited list of alternative names and abbreviations
Notes:Field names, lab names, or other sample labels for the samples
Type:List
Examples:A12
Flow 16
1.0 Column:samples.sample_alternatives
2.6Location Name, locationStringName for location, dredge, drill site, etc.
Required
Description:Name for location, dredge, drill site, etc.
Notes:The location label for a site can be used to group sites. Use location_type to specify the type of location
Type:String
Examples:San Francisco Volcanic Province
Dredge AMAT02-D12

Site 801
Validation:
Required
The values in this column must not be empty.
1.0 Column:samples.location
2.7Location Name Alternatives, location_alternativesListColon-delimited list of alternative names and/or abbreviations
Description:Colon-delimited list of alternative names and/or abbreviations
Type:List
Examples:North Slope Alaska:Prudhoe Bay
Site Q23A
1.0 Column:samples.location_alternatives
2.8Location Type, location_typeStringThe group of sites location type
Recommended
Vocabulary
Description:The group of sites location type
Notes:The location type is a controlled vocabulary. Please contact the KArAr team if you need additional terms added to the vocabulary.
Type:String
Examples:Archeological Site
Core

Lake Core

Lunar

Stratigraphic Section
Validations:
Vocabulary
Any values in this column must contain a value found in the Location Type controlled vocabulary.

Recommended
The values in this column are recommended not to be empty.
1.0 Column:samples.location_type
Field Sampling Group
2
2.9Sampling Timestamp, timestampTimestampField sampling date and time
Validation
Description:Field sampling date and time
Notes:ISO 8601 date and time (e.g. "yyyy-mm-ddThh:mm:ss.sssZ"). See wikipedia.org/wiki/ISO_8601 for detailed explanation
Type:Timestamp
Examples:2021-01-01T10:02:34.87
2020-07-20T22:56:15-04:00
Validation:
Validation
Any values in this column must contain a valid date and time between 1900 and today.
1.0 Column:samples.timestamp
2.10Method Codes, method_codesListColon-delimited list of method codes
Vocabulary
Description:Colon-delimited list of method codes
Type:List
Validation:
Vocabulary
Any values in this column must contain a value found in the Method Codes controlled vocabulary.
1.0 Column:samples.method_codes
Geology Group
12
2.11Geologic Setting, settingStringGeologic, archeological, or astronomical setting
Vocabulary
Description:Geologic, archeological, or astronomical setting
Type:String
Examples:Igneous
Sedimentary

Submarine

Lunar

Archeologic
Validation:
Vocabulary
Any values in this column must contain a value found in the setting controlled vocabulary.
1.0 Column:samples.setting
2.12Sample Material, materialStringMaterial of the sample
Vocabulary
Description:Material of the sample
Type:String
Examples:Pluton
Lava Flow

Amphora

Volcanic Glass

Tuff
Validation:
Vocabulary
Any values in this column must contain a value found in the sample_material controlled vocabulary.
1.0 Column:samples.material
2.13Sample Material Classification, material_classificationStringGeologic
Vocabulary
Description:Geologic
Type:String
Example:Igneous>Volcanic>Mafic
Validation:
Vocabulary
Any values in this column must contain a value found in the material_classification controlled vocabulary.
1.0 Column:samples.material_classification
2.14Lithology, lithologyStringLithology or archeological classification
Vocabulary
Description:Lithology or archeological classification
Type:String
Examples:Chalk
Felsite

Granite

H Ordinary Chondrite

Organic Silt
Validation:
Vocabulary
Any values in this column must contain a value found in the Lithologies controlled vocabulary.
1.0 Column:samples.lithology
2.15Plate or Block Name, plate_blockStringPlate or tectonic block name
Vocabulary
Description:Plate or tectonic block name
Type:String
Examples:Adriatic Plate
Alxa Block

Zimbabwe Craton

Gonâve Microplate

Sebakwe Proto-Craton
Validation:
Vocabulary
Any values in this column must contain a value found in the Tectonic Plates and Blocks controlled vocabulary.
1.0 Column:samples.plate_block
2.16Terrane Name, terraneStringTerrane name
Vocabulary
Description:Terrane name
Type:String
Examples:Acadian Orogen
Colorado Plateau

Fennoscandian Shield

Grenville Province

Narooma Terrane
Validation:
Vocabulary
Any values in this column could contain a value found in the Terranes suggested vocabulary. If not, the value will be added to the suggested vocabulary when the contribution is made public.
1.0 Column:samples.terrane
2.17Geological Province or Section Name, geological_province_sectionStringGeological province or section name
Vocabulary
Description:Geological province or section name
Type:String
Examples:Absaroka Range, Montana and Wyoming
Adam Range

Carpathian Mountains

Himalaya

Ötztal Alps
Validation:
Vocabulary
Any values in this column could contain a value found in the Geological Province and Section Names suggested vocabulary. If not, the value will be added to the suggested vocabulary when the contribution is made public.
1.0 Column:samples.geological_province_section
2.18Tectonic Setting, tectonic_settingStringColon-delimited list of tectonic setting
Vocabulary
Description:Colon-delimited list of tectonic setting
Type:String
Examples:Accreted Terrain
Collisional Orogen

Aseismic Ridge

Subduction Zone

Wrench Fault Region
Validation:
Vocabulary
Any values in this column must contain a value found in the Tectonic Settings controlled vocabulary.
1.0 Column:samples.tectonic_setting
2.19Formation Name, formationStringName for formation
Description:Name for formation
Type:String
Example:Tuff of Coyote Spring
1.0 Column:samples.formation
2.20Formation Name Abbreviation, formation_abbreviationStringAbbreviation for the formation name
Description:Abbreviation for the formation name
Type:String
Example:Mics
1.0 Column:samples.formation_abbreviation
2.21Member Name, memberStringName for member
Description:Name for member
Type:String
Example:Glasshound Member
1.0 Column:samples.member
2.22Polarity, dir_polarityFlagMagnetic polarity direction of the site
Recommended
Vocabulary
Description:Magnetic polarity direction of the site
Notes:n for normal, r for reverse, t for transitional, e for excursional, u for unknown
Type:String
Unit:Flag
Examples:n
r

t

e

u
Validations:
Vocabulary
Any values in this column must contain a value found in the Magnetic Polarities controlled vocabulary.

Recommended
The values in this column are recommended not to be empty.
1.0 Column:samples.dir_polarity
Geography Group
18
2.23Latitude, latNumber in DegreesSample geographic location, Latitude
Validation
Description:Sample geographic location, Latitude
Notes:Decimal degrees
Type:Number
Unit:Degrees
Examples:11.4
-23.3546
Validations:
Validation
The values in this column must contain a value greater than or equal to -90.

Validation
The values in this column must contain a value less than or equal to 90.
1.0 Column:samples.lat
2.24Latitude Sigma, lat_sigmaNumber in DegreesSample geographic location averaging uncertainty, Latitude
Validation
Description:Sample geographic location averaging uncertainty, Latitude
Notes:Decimal degrees
Type:Number
Unit:Degrees
Example:0.00055
Validations:
Validation
The values in this column must contain a value greater than or equal to 0.

Validation
The values in this column must contain a value less than or equal to 180.
1.0 Column:samples.lat_sigma
2.25Longitude, lonNumber in DegreesSample geographic location, Longitude
Validation
Description:Sample geographic location, Longitude
Notes:Decimal degrees
Type:Number
Unit:Degrees
Examples:13.6
276.93165
Validations:
Validation
The values in this column must contain a value greater than or equal to 0.

Validation
The values in this column must contain a value less than or equal to 360.
1.0 Column:samples.lon
2.26Longitude Sigma, lon_sigmaNumber in DegreesSample geographic location averaging uncertainty, Longitude
Validation
Description:Sample geographic location averaging uncertainty, Longitude
Notes:Decimal degrees
Type:Number
Unit:Degrees
Example:0.00034
Validations:
Validation
The values in this column must contain a value greater than or equal to 0.

Validation
The values in this column must contain a value less than or equal to 360.
1.0 Column:samples.lon_sigma
2.27Geodetic Datum, geodetic_datumStringGeodetic datum reference frame for latitude and longitude
Vocabulary
Description:Geodetic datum reference frame for latitude and longitude
Notes:WGS 84 is used by GPS and is the most commonly used datum
Type:String
Examples:WGS 84
OSGB36

ETRS89

GDA94

GTRF
Validation:
Vocabulary
Any values in this column must contain a value found in the geodetic_datum controlled vocabulary.
1.0 Column:samples.geodetic_datum
2.28Geographic Precision, geographic_precisionNumber in mSample geographic precision
Validation
Description:Sample geographic precision
Type:Number
Unit:m
Examples:150
25

0.1

.05
Validation:
Validation
The values in this column must contain a value greater than or equal to 0.
1.0 Column:samples.geographic_precision
2.29Region Name, regionStringRegion name
Vocabulary
Description:Region name
Type:String
Examples:The Dolomites
Tuscany
Validation:
Vocabulary
Any values in this column could contain a value found in the Regions suggested vocabulary. If not, the value will be added to the suggested vocabulary when the contribution is made public.
1.0 Column:samples.region
2.30Continent or Ocean Name, continent_oceanStringContinent or ocean name
Vocabulary
Description:Continent or ocean name
Type:String
Examples:North America
Africa

Pacific Ocean

Arctic Ocean
Validation:
Vocabulary
Any values in this column must contain a value found in the Continents and Oceans controlled vocabulary.
1.0 Column:samples.continent_ocean
2.31Country Name, countryStringCountry name
Vocabulary
Description:Country name
Type:String
Examples:Nepal
Peru

Switzerland

United States of America
Validation:
Vocabulary
Any values in this column must contain a value found in the Countries controlled vocabulary.
1.0 Column:samples.country
2.32State or Province Name, state_provinceStringState or province name
Vocabulary
Description:State or province name
Type:String
Examples:California
Alberta

Chongqing

Minas Gerais
Validation:
Vocabulary
Any values in this column must contain a value found in the State or Province Names controlled vocabulary.
1.0 Column:samples.state_province
2.33Village or City Name, village_cityStringVillage or city name
Vocabulary
Description:Village or city name
Type:String
Examples:Athens
Pergamon

Sardis
Validation:
Vocabulary
Any values in this column could contain a value found in the Village and City Names suggested vocabulary. If not, the value will be added to the suggested vocabulary when the contribution is made public.
1.0 Column:samples.village_city
2.34Sea Name, seaStringSea or other smaller ocean feature
Vocabulary
Description:Sea or other smaller ocean feature
Type:String
Examples:Adriatic Sea
English Channel

Red Sea
Validation:
Vocabulary
Any values in this column must contain a value found in the Oceans and Seas controlled vocabulary.
1.0 Column:samples.sea
2.35Stratigraphic Order, orderIntegerOrder in the stratigraphic section
Description:Order in the stratigraphic section
Notes:Lower number for younger age.
Type:Integer
Examples:1
7
1.0 Column:samples.order
2.36Stratigraphic Height, heightNumber in mSample geographic location, Stratigraphic height
Description:Sample geographic location, Stratigraphic height
Notes:Positive is up in section or core, while negative is down relative to reference height
Type:Number
Unit:m
Examples:1945
234.6

-45.3
1.0 Column:samples.height
2.37Stratigraphic Height Error (one sigma), height_sigmaNumber in mStratigraphic height error (one sigma)
Description:Stratigraphic height error (one sigma)
Type:Number
Unit:m
Examples:34
1.5

.45

.012
1.0 Column:samples.height_sigma
2.38Elevation, elevationNumber in mElevation relative to sea level
Description:Elevation relative to sea level
Notes:Meters above sea level
Type:Number
Unit:m
Examples:545
1400

-34.4
1.0 Column:samples.elevation
2.39Core Depth, core_depthNumber in mCore depth below seafloor/lake bottom or surface
Description:Core depth below seafloor/lake bottom or surface
Notes:Meters below seafloor
Type:Number
Unit:m
Examples:254
3598

2.13
1.0 Column:samples.core_depth
2.40Composite Depth, composite_depthNumber in mComposite depth below seafloor/lake bottom or surface
Description:Composite depth below seafloor/lake bottom or surface
Notes:Meters below seafloor of a model of the depth based on multiple cores
Type:Number
Unit:m
Examples:546
2435

1.43
1.0 Column:samples.composite_depth
Metadata Group
2
2.41Description, descriptionStringSample and field sampling description and comments
Description:Sample and field sampling description and comments
Type:String
Example:This sample was taken 130 cm from a 40 cm thick dike
1.0 Column:samples.description
2.42Research Scientist Names, scientistsListColon-delimited list of EarthRef handles, ORCIDs, or names and emails for scientists who collected and described the sample
Validation
Description:Colon-delimited list of EarthRef handles, ORCIDs, or names and emails for scientists who collected and described the sample
Type:List
Example:@user1:@user2:0000-0002-9000-2100:Not A. Member <no.earthref.handle@gmail.com>
Validation:
Validation
Any values in this column could contain a user's ORCID iD or an EarthRef.org user's handle. If neither are known, the column value should include the user's email address and the they will be contacted when the contribution is made public.
1.0 Column:samples.scientists
3.Specimens, specimens
127
Uniquely irradiated sub-samples, sample splits, or mineral separates for dating
Contribution Group
2
3.1Contribution ID, contribution_idIntegerUnique contribution id
Download Only
Description:Unique contribution id
Notes:Written during contribution publication
Type:Integer
Example:5412
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:specimens.contribution_id
3.2Contribution Row ID, row_idIntegerUnique row ID within a KArAr Contribution
Download Only
Description:Unique row ID within a KArAr Contribution
Notes:Written during contribution publication
Type:Integer
Example:743
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:specimens.row_id
Description Group
5
3.3Specimen Name (Unique Irradiation Label), specimenStringName for specimen or unique irradiation label
Required
Description:Name for specimen or unique irradiation label
Type:String
Examples:SFVP01-01a
ICDP5054EXF4601

6D24-23
Validations:key()
Required
The values in this column must not be empty.
1.0 Column:specimens.specimen
3.4Specimen IGSN, igsnStringInternational Generic Sample Number (IGSN) of the sample. See https://datacite.org/igsn/
Required (?)
Validation
Description:International Generic Sample Number (IGSN) of the sample. See https://datacite.org/igsn/
Type:String
Example:ICDP5054EXF4601
Validations:
Validation
Any values in this column must contain a valid International Geo Sample Number.

requiredUnlessLegacy()
1.0 Column:specimens.igsn
3.5Specimen Name Alternatives, specimen_alternativesListColon-delimited list of alternative names and abbreviations
Description:Colon-delimited list of alternative names and abbreviations
Type:List
Example:awr-2-1
1.0 Column:specimens.specimen_alternatives
3.6Sample Name, sampleStringThe name of the sample the specimen came from
Required
Description:The name of the sample the specimen came from
Type:String
Example:SFVP01-01
Validation:
Required
The values in this column must not be empty.
1.0 Column:specimens.sample
3.7Project Names or Numbers, projectsListNames of the projects the specimen is a part of
Recommended
Description:Names of the projects the specimen is a part of
Type:List
Examples:24-10
Lisa Tauxe - Antarctica dry valleys volcanics
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.projects
Material Info Group
6
3.8Irradiated Material Type, material_typeStringThe type of the mineral or material irradiated
Required
Vocabulary
Description:The type of the mineral or material irradiated
Type:String
Examples:Mineral
Groundmass
Validations:
Vocabulary
Any values in this column must contain a value found in the specimen_material controlled vocabulary.

Required
The values in this column must not be empty.
1.0 Column:specimens.material_type
3.9Irradiated Material Name, material_nameStringThe name of the mineral or material irradiated
Required
Vocabulary
Description:The name of the mineral or material irradiated
Type:String
Examples:Plagioclase
Groundmass
Validations:
Vocabulary
Any values in this column must contain a value found in the mineral controlled vocabulary.

Required
The values in this column must not be empty.
1.0 Column:specimens.material_name
3.10Cleaning Treatment, material_cleaningStringHow the specimen was cleaned
Description:How the specimen was cleaned
Type:String
Example:1x leach + 15 min HF
1.0 Column:specimens.material_cleaning
3.11Smallest Grain Size, grain_size_smallNumber in μmLower limit on grain diameter
Description:Lower limit on grain diameter
Type:Number
Unit:μm
Example:50
1.0 Column:specimens.grain_size_small
3.12Largest Grain Size, grain_size_largeString in μmUpper limit on grain diameter
Description:Upper limit on grain diameter
Type:String
Unit:μm
Example:100
1.0 Column:specimens.grain_size_large
3.13Total Irradiated Specimen Weight, irradiated_weightNumber in mgTotal weight of the specimen that was irradiated
Description:Total weight of the specimen that was irradiated
Type:Number
Unit:mg
Example:20.1
1.0 Column:specimens.irradiated_weight
Preferred Age Group
11
3.14Preferred Age Calculation Method, age_calculation_methodStringMethod by which the preferred age was determined
Required
Vocabulary
Description:Method by which the preferred age was determined
Type:String
Examples:Plateau
Normal Isochron

Inverse Isochron

Total Fusion
Validations:
Vocabulary
Any values in this column must contain a value found in the age_method controlled vocabulary.

Required
The values in this column must not be empty.
1.0 Column:specimens.age_calculation_method
3.15Preferred Age, ageNumberSpecimen preferred age
Required
Description:Specimen preferred age
Type:Number
Unit:Custom
Examples:1.678
100.5

1560
Validation:
Required
The values in this column must not be empty.
1.0 Column:specimens.age
3.16Age Standard Error (One Sigma, Analytical), age_sigma_analyticalNumberOne sigma standard error including analytical uncertainties only
Required
Validation
Description:One sigma standard error including analytical uncertainties only
Notes:Includes uncertainties in the measurements themselves only. These typically include uncertainties on the measured intercept values, baseline corrections, blank corrections, atmospheric corrections, mass fractionation corrections, collector calibration corrections, irradiation produced interference corrections. This does neither include the measured flux monitor J-value uncertainty nor any applied external uncertainties from the used decay constants and the flux monitor age.
Type:Number
Unit:Custom
Examples:1.5
.98

.004
Validations:
Validation
The values in this column must contain a value greater than or equal to 0.

Required
The values in this column must not be empty.
1.0 Column:specimens.age_sigma_analytical
3.17Age Standard Error (One Sigma, Internal), age_sigma_internalNumberOne sigma standard error including analytical uncertainties plus the J-value uncertainty
Description:One sigma standard error including analytical uncertainties plus the J-value uncertainty
Notes:Includes all analytical uncertainties plus the measured flux monitor J-value uncertainty. This does not include any applied external uncertainties from the used decay constants and the flux monitor age.
Type:Number
Unit:Custom
Examples:0.23
25
1.0 Column:specimens.age_sigma_internal
3.18Age Standard Error (One Sigma, External), age_sigma_externalNumberOne sigma standard error including analytical uncertainties plus the J-value uncertainty as well as uncertainties on the decay constants and the assigned flux monitor age
Description:One sigma standard error including analytical uncertainties plus the J-value uncertainty as well as uncertainties on the decay constants and the assigned flux monitor age
Notes:Includes all analytical uncertainties plus the measured flux monitor J-value uncertainty and all applied external uncertainties from the used decay constants and the flux monitor age.
Type:Number
Unit:Custom
Examples:0.212
32
1.0 Column:specimens.age_sigma_external
3.19Younger Age, age_lowNumberSpecimen youngest age constraint
Required (?)
Description:Specimen youngest age constraint
Notes:Used for asymmetrical age uncertainties often calculated using Bayesian statistics when one has additional age constraints on the age of the site.
Type:Number
Unit:Custom
Examples:120.2
505

5.43
Validation:
Required (?)
For each row, the value in this column must not be empty unless the age column value is not empty.
1.0 Column:specimens.age_low
3.20Older Age, age_highNumberSpecimen oldest age constraint
Required (?)
Description:Specimen oldest age constraint
Notes:Used for asymmetrical age uncertainties often calculated using Bayesian statistics when one has additional age constraints on the age of the site.
Type:Number
Unit:Custom
Examples:126.6
514

5.67
Validation:
Required (?)
For each row, the value in this column must not be empty unless the age column value is not empty.
1.0 Column:specimens.age_high
3.21Age Unit, age_unitStringSpecimen age unit
Required
Vocabulary
Description:Specimen age unit
Type:String
Examples:Ga
Ma

ka

BP

BP Cal

AD

AD Cal

BC

BC Cal
Validations:
Vocabulary
Any values in this column must contain a value found in the Age Units controlled vocabulary.

Required
The values in this column must not be empty.
1.0 Column:specimens.age_unit
3.22Experiments Used to Calculate Age, age_experimentsListColumn delimited list of experiment names
Required (?)
Found In
Description:Column delimited list of experiment names
Notes:Multiple experiments when a stacked age calculation
Type:List
Example:14D32259:15D04199:14D33125
Validations:
Found In
The values in this column must contain a value found in the contribution's experiments.experiment column.

requiredUnlessLegacy()
1.0 Column:specimens.age_experiments
3.23Preferred Age Interpretation, age_interpretationStringPreferred interpreted age type
Required (?)
Vocabulary
Description:Preferred interpreted age type
Notes:Select which age type (e.g. eruption age, alteration age) is dated with this specimen
Type:String
Examples:Crystallization Age
Reheating Event

Eruption Age

Alteration Age

No Age Interpretation
Validations:
Vocabulary
Any values in this column must contain a value found in the age_type controlled vocabulary.

requiredUnlessLegacy()
1.0 Column:specimens.age_interpretation
3.24Preferred Age Description, age_descriptionStringAdditional information on how the preferred age was determined
Description:Additional information on how the preferred age was determined
Type:String
Example:Isochron age used due to likely fractionalization of atmospheric argon
1.0 Column:specimens.age_description
Age Standard Group
11
3.25Age Standard Name, stnd_nameStringName of the age standard used as an irradiation flux monitor
Required
Description:Name of the age standard used as an irradiation flux monitor
Type:String
Example:Fish Canyon Sanidine
Validation:
Required
The values in this column must not be empty.
1.0 Column:specimens.stnd_name
3.26Citation DOI, stnd_citationStringDOI for the citation describing the age standard
Required
Validation
Description:DOI for the citation describing the age standard
Type:String
Example:10.1016/j.epsl.2011.09.017
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

Required
The values in this column must not be empty.
1.0 Column:specimens.stnd_citation
3.27Standard Material, stnd_materialStringMaterial of the age standard
Required
Description:Material of the age standard
Type:String
Examples:Sandine
Biotite
Validation:
Required
The values in this column must not be empty.
1.0 Column:specimens.stnd_material
3.28Standard Age, stnd_ageNumberAge of the age standard
Required
Description:Age of the age standard
Type:Number
Unit:Custom
Example:28.172
Validation:
Required
The values in this column must not be empty.
1.0 Column:specimens.stnd_age
3.29Standard Age Standard Error (One Sigma), stnd_age_sigmaNumberOne sigma standard error of the age of the age standard
Required
Description:One sigma standard error of the age of the age standard
Type:Number
Unit:Custom
Example:0.014
Validation:
Required
The values in this column must not be empty.
1.0 Column:specimens.stnd_age_sigma
3.30Standard Age Unit, stnd_age_unitStringUnit of the age of the age standard
Required
Vocabulary
Description:Unit of the age of the age standard
Type:String
Examples:Ga
Ma

ka

BP

BP Cal

AD

AD Cal

BC

BC Cal
Validations:
Vocabulary
Any values in this column must contain a value found in the Age Units controlled vocabulary.

Required
The values in this column must not be empty.
1.0 Column:specimens.stnd_age_unit
3.31Standard ⁴⁰Ar/³⁹Ar Ratio, stnd_40ar_39ar_ratioNumber ⁴⁰Ar/³⁹Ar ratio for the age standard
Description: ⁴⁰Ar/³⁹Ar ratio for the age standard
Type:Number
1.0 Column:specimens.stnd_40ar_39ar_ratio
3.32Standard ⁴⁰Ar/³⁹Ar Ratio Sigma, stnd_40ar_39ar_ratio_sigmaNumberOne sigma uncertainty in the ⁴⁰Ar/³⁹Ar ratio for the age standard
Description:One sigma uncertainty in the ⁴⁰Ar/³⁹Ar ratio for the age standard
Type:Number
1.0 Column:specimens.stnd_40ar_39ar_ratio_sigma
3.33Total ⁴⁰K Decay Constant, stnd_decay_con_40k_totNumber in 1/aDecay constant for total ⁴⁰K decay
Required (?)
Description:Decay constant for total ⁴⁰K decay
Type:Number
Unit:1/a
Example:5.543 e-10
Validation:requiredUnlessLegacy()
1.0 Column:specimens.stnd_decay_con_40k_tot
3.34Total ⁴⁰K Decay Constant Uncertainty (One Sigma), stnd_decay_con_40k_tot_sigmaNumber in 1/aOne sigma uncertainty in the decay constant for total ⁴⁰Ar
Required (?)
Description:One sigma uncertainty in the decay constant for total ⁴⁰Ar
Type:Number
Unit:1/a
Example:0.0877 e-10
Validation:requiredUnlessLegacy()
1.0 Column:specimens.stnd_decay_con_40k_tot_sigma
3.35Total ⁴⁰K Decay Citation, stnd_decay_con_40k_tot_citationStringCitation for the decay constant for total ⁴⁰Ar decay
Required (?)
Description:Citation for the decay constant for total ⁴⁰Ar decay
Type:String
Example:10.1016/0012-821X(77)90060-7
Validation:requiredUnlessLegacy()
1.0 Column:specimens.stnd_decay_con_40k_tot_citation
Irradiation Group
12
3.36Irradiation Name, irrad_nameStringName or ID of the irradiation
Required (?)
Description:Name or ID of the irradiation
Type:String
Example:501B
Validation:requiredUnlessLegacy()
1.0 Column:specimens.irrad_name
3.37Irradiation Reactor Name, irrad_reactor_nameStringIrradiation reactor name
Required (?)
Vocabulary
Description:Irradiation reactor name
Type:String
Example:OSU TRIGA
Validations:
Vocabulary
Any values in this column must contain a value found in the reactor_name controlled vocabulary.

requiredUnlessLegacy()
1.0 Column:specimens.irrad_reactor_name
3.38Irradiation Position, irrad_positionStringThe name or label that uniquely describes the position in an irradiation package, tray or vial
Required (?)
Description:The name or label that uniquely describes the position in an irradiation package, tray or vial
Type:String
Example:6D24-23
Validation:requiredUnlessLegacy()
1.0 Column:specimens.irrad_position
3.39Irradiation Flux Parameter (J), j_valueNumberJ value of the age determination
Required (?)
Description:J value of the age determination
Notes:J is the irradiation flux parameter with its value determined from measuring the ratio of radiogenic ⁴⁰Ar to ³⁹Ar generated by potassium decay from a specimen of known age (the age standard)
Type:Number
Example:0.0013208
Validation:requiredUnlessLegacy()
1.0 Column:specimens.j_value
3.40Irradiation Flux Parameter (J) (One Sigma), j_value_sigmaNumberOne sigma standard uncertainty of the J value
Required (?)
Description:One sigma standard uncertainty of the J value
Type:Number
Example:0.00000416
Validation:requiredUnlessLegacy()
1.0 Column:specimens.j_value_sigma
3.41Specimen is a Flux Monitor, is_flux_monitorFlagThe specimen is an age standard being used for a flux monitor
Required
Vocabulary
Description:The specimen is an age standard being used for a flux monitor
Type:String
Unit:Flag
Examples:True
False
Validations:
Vocabulary
Any values in this column must contain a value found in the Boolean Flags controlled vocabulary.

Required
The values in this column must not be empty.
1.0 Column:specimens.is_flux_monitor
3.42X Irradiation Position , irrad_xNumber in mmX position of the specimen during irradiation
Description:X position of the specimen during irradiation
Type:Number
Unit:mm
Examples:123.6
-26.7

5.6
1.0 Column:specimens.irrad_x
3.43Y Irradiation Position, irrad_yNumber in mmY position of the specimen during irradiation
Description:Y position of the specimen during irradiation
Type:Number
Unit:mm
Examples:13.6
-6.7

1.6
1.0 Column:specimens.irrad_y
3.44Z Irradiation Position, irrad_zNumber in mmZ position or height of the specimen during irradiation
Description:Z position or height of the specimen during irradiation
Type:Number
Unit:mm
Examples:13.6
-6.7

1.6
1.0 Column:specimens.irrad_z
3.45Irradiation Total Duration, irrad_total_durationNumber in hrTotal Irradiation Duration In Hours
Required (?)
Validation
Description:Total Irradiation Duration In Hours
Type:Number
Unit:hr
Example:5.5
Validations:
Validation
The values in this column must contain a value greater than or equal to 0.

requiredUnlessLegacy()
1.0 Column:specimens.irrad_total_duration
3.46Irradiation Total End Timestamp, irrad_total_end_timestampTimestampISO 8601 date and time (e.g. "yyyy-mm-ddThh:mm:ss.sssZ")
Required (?)
Description:ISO 8601 date and time (e.g. "yyyy-mm-ddThh:mm:ss.sssZ")
Type:Timestamp
Examples:2021-01-01T10:02:34.87
2020-07-20T22:56:15-04:00
Validation:requiredUnlessLegacy()
1.0 Column:specimens.irrad_total_end_timestamp
3.47Irradiation Segments, irrad_segmentsMatrixColon-delimited list of irradiation segments with end times, durations and reactor power that together record the total time of the irradiation
Description:Colon-delimited list of irradiation segments with end times, durations and reactor power that together record the total time of the irradiation
Notes:segment_number;end_time;duration;power
Type:Matrix
Example:1;"2021-01-01T10:02";120;1.0:2;"2021-01-06T12:10";60;1.0
1.0 Column:specimens.irrad_segments
Decay Constants Group
16
3.48Total ⁴⁰Ar Decay Constant, decay_con_40k_totNumber in 1/aDecay constant for total ⁴⁰Ar decay
Required (?)
Description:Decay constant for total ⁴⁰Ar decay
Type:Number
Unit:1/a
Example:5.543 e-10
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_40k_tot
3.49Total ⁴⁰Ar Decay Constant Uncertainty (One Sigma), decay_con_40k_tot_sigmaNumber in 1/aOne sigma uncertainty in the decay constant for total ⁴⁰Ar
Required (?)
Description:One sigma uncertainty in the decay constant for total ⁴⁰Ar
Type:Number
Unit:1/a
Example:0.0877 e-10
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_40k_tot_sigma
3.50⁴⁰K Beta Decay Constant, decay_con_40k_betaNumber in 1/aDecay constant for ⁴⁰Ar beta decay
Required (?)
Description:Decay constant for ⁴⁰Ar beta decay
Type:Number
Unit:1/a
Example:4.962 e-10
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_40k_beta
3.51⁴⁰K Beta Decay Constant Uncertainty (One Sigma), decay_con_40k_beta_sigmaNumber in 1/a⁴⁰Ar beta decay constant uncertainty (one sigma)
Required (?)
Description:⁴⁰Ar beta decay constant uncertainty (one sigma)
Type:Number
Unit:1/a
Example:0.086 e-10
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_40k_beta_sigma
3.52⁴⁰K Electron Decay Constant, decay_con_40k_electNumber in 1/aDecay constant for ⁴⁰Ar electron capture
Required (?)
Description:Decay constant for ⁴⁰Ar electron capture
Type:Number
Unit:1/a
Example:5.81 e-11
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_40k_elect
3.53⁴⁰K Electron Decay Constant Uncertainty (One Sigma), decay_con_40k_elect_sigmaNumber in 1/a⁴⁰Ar electron capture constant uncertainty (one sigma)
Required (?)
Description:⁴⁰Ar electron capture constant uncertainty (one sigma)
Type:Number
Unit:1/a
Example:0.17 e-11
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_40k_elect_sigma
3.54⁴⁰K Decay Citation, decay_con_40k_citationStringCitation for the decay constants for ⁴⁰Ar
Required (?)
Validation
Description:Citation for the decay constants for ⁴⁰Ar
Notes:DOI preferred
Type:String
Example:10.1016/0012-821X(77)90060-7
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.decay_con_40k_citation
3.55³⁹Ar Decay Constant, decay_con_39arNumber in 1/hDecay constant for ³⁹Ar decay
Required (?)
Description:Decay constant for ³⁹Ar decay
Type:Number
Unit:1/h
Example:2.58 e-3
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_39ar
3.56³⁹Ar Decay Constant Uncertainty (One Sigma), decay_con_39ar_sigmaNumber in 1/h³⁹Ar decay constant uncertainty (one sigma)
Required (?)
Description:³⁹Ar decay constant uncertainty (one sigma)
Type:Number
Unit:1/h
Example:0.03 e-3
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_39ar_sigma
3.57³⁹Ar Decay Citation, decay_con_39ar_citationStringCitation for the decay constant for ³⁹Ar decay
Required (?)
Validation
Description:Citation for the decay constant for ³⁹Ar decay
Notes:DOI preferred
Type:String
Example:10.1126/science.148.3675.1325
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.decay_con_39ar_citation
3.58³⁷Ar Decay Constant, decay_con_37arNumber in 1/hDecay constant for ³⁷Ar decay
Required (?)
Description:Decay constant for ³⁷Ar decay
Type:Number
Unit:1/h
Example:5.43 e-2
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_37ar
3.59³⁷Ar Decay Constant Uncertainty (One Sigma), decay_con_37ar_sigmaNumber in 1/h³⁷Ar decay constant uncertainty (one sigma)
Required (?)
Description:³⁷Ar decay constant uncertainty (one sigma)
Type:Number
Unit:1/h
Example:0.0063 e-2
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_37ar_sigma
3.60³⁷Ar Decay Citation, decay_con_37ar_citationStringCitation for the decay constant for ³⁷Ar decay
Required (?)
Validation
Description:Citation for the decay constant for ³⁷Ar decay
Notes:DOI preferred
Type:String
Example:10.1103/PhysRevC.63.047302
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.decay_con_37ar_citation
3.61³⁶Cl Decay Constant, decay_con_36clNumber in 1/aDecay constant for ³⁶Cl decay
Required (?)
Description:Decay constant for ³⁶Cl decay
Type:Number
Unit:1/a
Example:2.35 e-6
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_36cl
3.62³⁶Cl Decay Constant Uncertainty (One Sigma), decay_con_36cl_sigmaNumber in 1/a³⁶Cl decay constant uncertainty (one sigma)
Required (?)
Description:³⁶Cl decay constant uncertainty (one sigma)
Type:Number
Unit:1/a
Example:0.02 e-6
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_con_36cl_sigma
3.63³⁶Cl Decay Citation, decay_con_36cl_citationStringCitation for the decay constant for ³⁶Cl decay
Required (?)
Validation
Description:Citation for the decay constant for ³⁶Cl decay
Notes:DOI preferred
Type:String
Example:10.1016/S0375-9474(97)00613-1
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.decay_con_36cl_citation
Decay Activities Group
6
3.64Using Activities Instead of Decay Constants, using_decay_activitiesFlagUsing decay activities in the age calculations instead of decay constants
Required (?)
Vocabulary
Description:Using decay activities in the age calculations instead of decay constants
Type:String
Unit:Flag
Examples:True
False
Validations:
Vocabulary
Any values in this column must contain a value found in the Boolean Flags controlled vocabulary.

requiredUnlessLegacy()
1.0 Column:specimens.using_decay_activities
3.65⁴⁰K Beta Decay Activity, decay_act_40k_betaNumber in 1/gsDecay activity for ⁴⁰Ar beta decay
Required (?)
Description:Decay activity for ⁴⁰Ar beta decay
Type:Number
Unit:1/gs
Example:28.27
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_act_40k_beta
3.66⁴⁰K Beta Decay Activity Uncertainty (One Sigma), decay_act_40k_beta_sigmaNumber in 1/gs⁴⁰Ar beta decay activity uncertainty (one sigma)
Required (?)
Description:⁴⁰Ar beta decay activity uncertainty (one sigma)
Type:Number
Unit:1/gs
Example:0.033
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_act_40k_beta_sigma
3.67⁴⁰K Electron Decay Activity, decay_act_40k_electNumber in 1/gsDecay activity for ⁴⁰Ar electron capture
Required (?)
Description:Decay activity for ⁴⁰Ar electron capture
Type:Number
Unit:1/gs
Example:3.31
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_act_40k_elect
3.68⁴⁰K Electron Decay Activity Uncertainty (One Sigma), decay_act_40k_elect_sigmaNumber in 1/gs⁴⁰Ar electron capture activity uncertainty (one sigma)
Required (?)
Description:⁴⁰Ar electron capture activity uncertainty (one sigma)
Type:Number
Unit:1/gs
Example:0.04
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_act_40k_elect_sigma
3.69⁴⁰K Decay Citation, decay_act_40k_citationStringCitation for the decay activities for ⁴⁰Ar
Required (?)
Description:Citation for the decay activities for ⁴⁰Ar
Notes:DOI preferred
Type:String
Example:10.1016/0012-821X(77)90060-7
Validation:requiredUnlessLegacy()
1.0 Column:specimens.decay_act_40k_citation
Decay Parameters Group
8
3.70⁴⁰K To Total K Ratio, abundance_ratio_40k_kNumberThe ⁴⁰K to total K ratio for the specimen
Required (?)
Description:The ⁴⁰K to total K ratio for the specimen
Type:Number
Example:0.01167
Validation:requiredUnlessLegacy()
1.0 Column:specimens.abundance_ratio_40k_k
3.71⁴⁰K To Total K Ratio Uncertainty (One Sigma), abundance_ratio_40k_k_sigmaNumberOne sigma uncertainty of the ⁴⁰K to total K ratio for the specimen
Required (?)
Description:One sigma uncertainty of the ⁴⁰K to total K ratio for the specimen
Type:Number
Example:0.00004
Validation:requiredUnlessLegacy()
1.0 Column:specimens.abundance_ratio_40k_k_sigma
3.72⁴⁰K To Total K Citation, abundance_ratio_40k_k_citationStringCitation for the ⁴⁰K to total K ratio and uncertainty for the specimen
Required (?)
Description:Citation for the ⁴⁰K to total K ratio and uncertainty for the specimen
Notes:DOI preferred
Type:String
Example:10.6028/jres.079A.028
Validation:requiredUnlessLegacy()
1.0 Column:specimens.abundance_ratio_40k_k_citation
3.73Atomic Weight K, atomic_weight_kNumberAtomic weight of K for the specimen
Required (?)
Description:Atomic weight of K for the specimen
Type:Number
Example:39.098304
Validation:requiredUnlessLegacy()
1.0 Column:specimens.atomic_weight_k
3.74Atomic Weight K Uncertainty (One Sigma), atomic_weight_k_sigmaNumberOne sigma uncertainty of the atomic weight of K for the specimen
Required (?)
Description:One sigma uncertainty of the atomic weight of K for the specimen
Type:Number
Example:0.000058
Validation:requiredUnlessLegacy()
1.0 Column:specimens.atomic_weight_k_sigma
3.75Atomic Weight K Citation, atomic_weight_k_citationStringCitation of the atomic weight and uncertainty of K for the specimen
Required (?)
Description:Citation of the atomic weight and uncertainty of K for the specimen
Notes:DOI preferred
Type:String
Example:10.6028/jres.079A.028
Validation:requiredUnlessLegacy()
1.0 Column:specimens.atomic_weight_k_citation
3.76Avogadro Number, avogadro_numberNumber in 1/molAvogradro number
Required (?)
Description:Avogradro number
Type:Number
Unit:1/mol
Example:6.0221367E+23
Validation:requiredUnlessLegacy()
1.0 Column:specimens.avogadro_number
3.77Solar Year, solar_yearNumber in sNumber of seconds in a solar year
Required (?)
Description:Number of seconds in a solar year
Type:Number
Unit:s
Example:31556930
Validation:requiredUnlessLegacy()
1.0 Column:specimens.solar_year
Corrections Group
42
3.78⁴⁰Ar/³⁶Ar Atmospheric Ratio, 40ar_36ar_atmosphericNumberThe ⁴⁰Ar/³⁶Ar atmospheric ratio
Required (?)
Description:The ⁴⁰Ar/³⁶Ar atmospheric ratio
Type:Number
Examples:295.5
298.56
Validation:requiredUnlessLegacy()
1.0 Column:specimens.40ar_36ar_atmospheric
3.79⁴⁰Ar/³⁶Ar Atmospheric Ratio (One Sigma), 40ar_36ar_atmospheric_sigmaNumberOne sigma uncertainty on the ⁴⁰Ar/³⁶Ar atmospheric ratio
Required (?)
Description:One sigma uncertainty on the ⁴⁰Ar/³⁶Ar atmospheric ratio
Type:Number
Examples:0.5
0.31
Validation:requiredUnlessLegacy()
1.0 Column:specimens.40ar_36ar_atmospheric_sigma
3.80⁴⁰Ar/³⁶Ar Atmospheric Ratio Citation, 40ar_36ar_atmospheric_citationStringCitation for the ⁴⁰Ar/³⁶Ar atmospheric ratio and uncertainty values
Required (?)
Validation
Description:Citation for the ⁴⁰Ar/³⁶Ar atmospheric ratio and uncertainty values
Notes:DOI preferred
Type:String
Examples:10.1103/PhysRev.77.789
Nier (1950)

10.1016/j.gca.2006.06.1563

Lee et al. (2006)
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.40ar_36ar_atmospheric_citation
3.81³⁸Ar/³⁶Ar Atmospheric Ratio, 38ar_36ar_atmosphericNumberThe ³⁸Ar/³⁶Ar atmospheric ratio
Required (?)
Description:The ³⁸Ar/³⁶Ar atmospheric ratio
Type:Number
Examples:0.1880
0.1885
Validation:requiredUnlessLegacy()
1.0 Column:specimens.38ar_36ar_atmospheric
3.82³⁸Ar/³⁶Ar Atmospheric Ratio (One Sigma), 38ar_36ar_atmospheric_sigmaNumberOne sigma uncertainty on the ³⁸Ar/³⁶Ar atmospheric ratio
Required (?)
Description:One sigma uncertainty on the ³⁸Ar/³⁶Ar atmospheric ratio
Type:Number
Examples:0.0003
0.0003
Validation:requiredUnlessLegacy()
1.0 Column:specimens.38ar_36ar_atmospheric_sigma
3.83³⁸Ar/³⁶Ar Atmospheric Ratio Citation, 38ar_36ar_atmospheric_citationStringCitation for the ³⁸Ar/³⁶Ar atmospheric ratio and uncertainty values
Required (?)
Validation
Description:Citation for the ³⁸Ar/³⁶Ar atmospheric ratio and uncertainty values
Notes:DOI preferred
Type:String
Examples:10.1103/PhysRev.77.789
Nier (1950)

10.1016/j.gca.2006.06.1563

Lee et al. (2006)
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.38ar_36ar_atmospheric_citation
3.84⁴⁰Ar/³⁶Ar Cosmogenic Ratio, 40ar_36ar_cosmogenicNumberThe ⁴⁰Ar/³⁶Ar cosmogenic ratio
Description:The ⁴⁰Ar/³⁶Ar cosmogenic ratio
Type:Number
1.0 Column:specimens.40ar_36ar_cosmogenic
3.85⁴⁰Ar/³⁶Ar Cosmogenic Ratio (One Sigma), 40ar_36ar_cosmogenic_sigmaNumberOne sigma uncertainty on the ⁴⁰Ar/³⁶Ar cosmogenic ratio
Description:One sigma uncertainty on the ⁴⁰Ar/³⁶Ar cosmogenic ratio
Type:Number
1.0 Column:specimens.40ar_36ar_cosmogenic_sigma
3.86⁴⁰Ar/³⁶Ar Cosmogenic Ratio Citation, 40ar_36ar_cosmogenic_citationStringCitation for the ⁴⁰Ar/³⁶Ar cosmogenic ratio and uncertainty values
Validation
Description:Citation for the ⁴⁰Ar/³⁶Ar cosmogenic ratio and uncertainty values
Notes:DOI preferred
Type:String
Validation:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.
1.0 Column:specimens.40ar_36ar_cosmogenic_citation
3.87³⁸Ar/³⁶Ar Cosmogenic Ratio, 38ar_36ar_cosmogenicNumberThe ³⁸Ar/³⁶Ar cosmogenic ratio
Description:The ³⁸Ar/³⁶Ar cosmogenic ratio
Type:Number
1.0 Column:specimens.38ar_36ar_cosmogenic
3.88³⁸Ar/³⁶Ar Cosmogenic Ratio (One Sigma), 38ar_36ar_cosmogenic_sigmaNumberOne sigma uncertainty on the ³⁸Ar/³⁶Ar cosmogenic ratio
Description:One sigma uncertainty on the ³⁸Ar/³⁶Ar cosmogenic ratio
Type:Number
1.0 Column:specimens.38ar_36ar_cosmogenic_sigma
3.89⁴⁰Ar/³⁶Ar Cosmogenic Ratio Citation, 38ar_36ar_cosmogenic_citationStringCitation for the ⁴⁰Ar/³⁶Ar cosmogenic ratio and uncertainty values
Validation
Description:Citation for the ⁴⁰Ar/³⁶Ar cosmogenic ratio and uncertainty values
Notes:DOI preferred
Type:String
Validation:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.
1.0 Column:specimens.38ar_36ar_cosmogenic_citation
3.90³⁹Ar/³⁷Ar Calcium Production Ratio, 39ar_37ar_calciumNumberThe ³⁹Ar/³⁷Ar Calcium production ratio
Required (?)
Description:The ³⁹Ar/³⁷Ar Calcium production ratio
Type:Number
Example:6.95 e-4
Validation:requiredUnlessLegacy()
1.0 Column:specimens.39ar_37ar_calcium
3.91³⁹Ar/³⁷Ar Calcium Production Ratio (One Sigma), 39ar_37ar_calcium_sigmaNumberOne sigma uncertainty on the ³⁹Ar/³⁷Ar Calcium production ratio
Required (?)
Description:One sigma uncertainty on the ³⁹Ar/³⁷Ar Calcium production ratio
Type:Number
Example:0.09 e-4
Validation:requiredUnlessLegacy()
1.0 Column:specimens.39ar_37ar_calcium_sigma
3.92³⁹Ar/³⁷Ar Calcium Production Ratio Citation, 39ar_37ar_calcium_citationStringCitation for the ³⁹Ar/³⁷Ar Calcium production ratio
Required (?)
Validation
Description:Citation for the ³⁹Ar/³⁷Ar Calcium production ratio
Notes:DOI preferred
Type:String
Example:110.1016/j.apradiso.2004.06.004
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.39ar_37ar_calcium_citation
3.93³⁸Ar/³⁷Ar Calcium Production Ratio, 38ar_37ar_calciumNumberThe ³⁸Ar/³⁷Ar Calcium production ratio
Required (?)
Description:The ³⁸Ar/³⁷Ar Calcium production ratio
Type:Number
Example:1.96 e-5
Validation:requiredUnlessLegacy()
1.0 Column:specimens.38ar_37ar_calcium
3.94³⁸Ar/³⁷Ar Calcium Production Ratio (One Sigma), 38ar_37ar_calcium_sigmaNumberOne sigma uncertainty on the ³⁸Ar/³⁷Ar Calcium production ratio
Required (?)
Description:One sigma uncertainty on the ³⁸Ar/³⁷Ar Calcium production ratio
Type:Number
Example:0.08 e-5
Validation:requiredUnlessLegacy()
1.0 Column:specimens.38ar_37ar_calcium_sigma
3.95³⁸Ar/³⁷Ar Calcium Production Ratio Citation, 38ar_37ar_calcium_citationStringCitation for the ³⁸Ar/³⁷Ar Calcium production ratio
Required (?)
Validation
Description:Citation for the ³⁸Ar/³⁷Ar Calcium production ratio
Notes:DOI preferred
Type:String
Example:110.1016/j.apradiso.2004.06.004
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.38ar_37ar_calcium_citation
3.96³⁶Ar/³⁷Ar Calcium Production Ratio, 36ar_37ar_calciumNumberThe ³⁶Ar/³⁷Ar Calcium production ratio
Required (?)
Description:The ³⁶Ar/³⁷Ar Calcium production ratio
Type:Number
Validation:requiredUnlessLegacy()
1.0 Column:specimens.36ar_37ar_calcium
3.97³⁶Ar/³⁷Ar Calcium Production Ratio (One Sigma), 36ar_37ar_calcium_sigmaNumberOne sigma uncertainty on the ³⁶Ar/³⁷Ar Calcium production ratio
Required (?)
Description:One sigma uncertainty on the ³⁶Ar/³⁷Ar Calcium production ratio
Type:Number
Validation:requiredUnlessLegacy()
1.0 Column:specimens.36ar_37ar_calcium_sigma
3.98³⁶Ar/³⁷Ar Calcium Production Ratio Citation, 36ar_37ar_calcium_citationStringCitation for the ³⁶Ar/³⁷Ar Calcium production ratio
Required (?)
Validation
Description:Citation for the ³⁶Ar/³⁷Ar Calcium production ratio
Notes:DOI preferred
Type:String
Example:110.1016/j.apradiso.2004.06.004
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.36ar_37ar_calcium_citation
3.99⁴⁰Ar/³⁹Ar Potassium Production Ratio, 40ar_39ar_potassiumNumberThe ⁴⁰Ar/³⁹Ar Potassium production ratio
Required (?)
Description:The ⁴⁰Ar/³⁹Ar Potassium production ratio
Type:Number
Example:2.65 e-04
Validation:requiredUnlessLegacy()
1.0 Column:specimens.40ar_39ar_potassium
3.100⁴⁰Ar/³⁹Ar Potassium Production Ratio (One Sigma), 40ar_39ar_potassium_sigmaNumberOne sigma uncertainty on the ⁴⁰Ar/³⁹Ar Potassium production ratio
Required (?)
Description:One sigma uncertainty on the ⁴⁰Ar/³⁹Ar Potassium production ratio
Type:Number
Example:0.02 e-04
Validation:requiredUnlessLegacy()
1.0 Column:specimens.40ar_39ar_potassium_sigma
3.101⁴⁰Ar/³⁹Ar Potassium Production Ratio Citation, 40ar_39ar_potassium_citationStringCitation for the ⁴⁰Ar/³⁹Ar Potassium production ratio
Required (?)
Validation
Description:Citation for the ⁴⁰Ar/³⁹Ar Potassium production ratio
Notes:DOI preferred
Type:String
Example:110.1016/j.apradiso.2004.06.004
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.40ar_39ar_potassium_citation
3.102³⁸Ar/³⁹Ar Potassium Production Ratio, 38ar_39ar_potassiumNumberThe ³⁸Ar/³⁹Ar Potassium production ratio
Required (?)
Description:The ³⁸Ar/³⁹Ar Potassium production ratio
Type:Number
Example:1.22 e-02
Validation:requiredUnlessLegacy()
1.0 Column:specimens.38ar_39ar_potassium
3.103³⁸Ar/³⁹Ar Potassium Production Ratio (One Sigma), 38ar_39ar_potassium_sigmaNumberOne sigma uncertainty on the ³⁸Ar/³⁹Ar Potassium production ratio
Required (?)
Description:One sigma uncertainty on the ³⁸Ar/³⁹Ar Potassium production ratio
Type:Number
Example:0.00 e-02
Validation:requiredUnlessLegacy()
1.0 Column:specimens.38ar_39ar_potassium_sigma
3.104³⁸Ar/³⁹Ar Potassium Production Ratio Citation, 38ar_39ar_potassium_citationStringCitation for the ³⁸Ar/³⁹Ar Potassium production ratio
Required (?)
Validation
Description:Citation for the ³⁸Ar/³⁹Ar Potassium production ratio
Notes:DOI preferred
Type:String
Example:110.1016/j.apradiso.2004.06.004
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.38ar_39ar_potassium_citation
3.105³⁶Ar/³⁸Ar Chlorine Production Ratio , 36ar_38ar_chlorineNumberThe ³⁶Ar/³⁸Ar Chlorine production ratio
Required (?)
Description:The ³⁶Ar/³⁸Ar Chlorine production ratio
Type:Number
Example:262.8
Validation:requiredUnlessLegacy()
1.0 Column:specimens.36ar_38ar_chlorine
3.106³⁶Ar/³⁸Ar Chlorine Production Ratio (One Sigma), 36ar_38ar_chlorine_sigmaNumberOne sigma uncertainty on the ³⁶Ar/³⁸Ar Chlorine production ratio
Required (?)
Description:One sigma uncertainty on the ³⁶Ar/³⁸Ar Chlorine production ratio
Type:Number
Example:3
Validation:requiredUnlessLegacy()
1.0 Column:specimens.36ar_38ar_chlorine_sigma
3.107³⁶Ar/³⁸Ar Chlorine Production Ratio Citation, 36ar_38ar_chlorine_citationStringCitation for the ³⁶Ar/³⁸Ar Chlorine production ratio
Required (?)
Validation
Description:Citation for the ³⁶Ar/³⁸Ar Chlorine production ratio
Notes:DOI preferred
Type:String
Example:10.1016/j.chemgeo.2008.07.014
Validations:
Validation
Any values in this column shoud either contain valid DOI that is resolvable by doi.org or a valid URL that resolves to a web page. If you have a dataset associated with a paper that does not have a DOI (PhD thesis, master thesis, USGS report, etc.), KArAr can store the paper in the ERDA database (barring copyright issues) and mint a DOI for it.

requiredUnlessLegacy()
1.0 Column:specimens.36ar_38ar_chlorine_citation
3.108K/Ca Ratio, k_caNumberThe K/Ca ratio of the specimen
Required (?)
Description:The K/Ca ratio of the specimen
Type:Number
Validation:requiredUnlessLegacy()
1.0 Column:specimens.k_ca
3.109K/Ca (One Sigma), k_ca_sigmaNumberOne sigma uncertainty on the K/Ca ratio
Required (?)
Description:One sigma uncertainty on the K/Ca ratio
Type:Number
Validation:requiredUnlessLegacy()
1.0 Column:specimens.k_ca_sigma
3.110K/Ca Citation, k_ca_citationStringCitation for the K/Ca Ratio calculation
Required (?)
Description:Citation for the K/Ca Ratio calculation
Notes:DOI preferred
Type:String
Validation:requiredUnlessLegacy()
1.0 Column:specimens.k_ca_citation
3.111K/Cl, k_clNumberThe K/Cl ratio of the specimen
Recommended
Description:The K/Cl ratio of the specimen
Type:Number
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.k_cl
3.112K/Cl (One Sigma), k_cl_sigmaNumberOne sigma uncertainty on the K/Cl ratio
Recommended
Description:One sigma uncertainty on the K/Cl ratio
Type:Number
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.k_cl_sigma
3.113K/Cl Citation, k_cl_citationStringCitation for the K/Cl Ratio calculation
Recommended
Description:Citation for the K/Cl Ratio calculation
Notes:DOI preferred
Type:String
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.k_cl_citation
3.114Ca/Cl, ca_clNumberThe Ca/Cl correction
Recommended
Description:The Ca/Cl correction
Type:Number
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.ca_cl
3.115Ca/Cl (One Sigma), ca_cl_sigmaNumberOne sigma uncertainty on the Ca/Cl correction
Recommended
Description:One sigma uncertainty on the Ca/Cl correction
Type:Number
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.ca_cl_sigma
3.116Ca/Cl Citation, ca_cl_citationStringCitation for the Ca/Cl Ratio calculation
Recommended
Description:Citation for the Ca/Cl Ratio calculation
Notes:DOI preferred
Type:String
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.ca_cl_citation
3.117³⁶Cl/³⁸Cl Production Ratio, 36cl_38clNumberThe ³⁶Cl/³⁸Cl production ratio
Recommended
Description:The ³⁶Cl/³⁸Cl production ratio
Type:Number
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.36cl_38cl
3.118³⁶Cl/³⁸Cl Production Ratio Sigma, 36cl_38cl_sigmaNumberThe one sigma uncertainty on the ³⁶Cl/³⁸Cl production ratio
Recommended
Description:The one sigma uncertainty on the ³⁶Cl/³⁸Cl production ratio
Type:Number
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.36cl_38cl_sigma
3.119³⁶Cl/³⁸Cl Production Ratio Citation, 36cl_38cl_citationStringCitation for the ³⁶Cl/³⁸Cl production ratio
Recommended
Description:Citation for the ³⁶Cl/³⁸Cl production ratio
Notes:DOI preferred
Type:String
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.36cl_38cl_citation
Metadata Group
7
3.120Description, descriptionStringSpecimen and result description and comments
Recommended
Description:Specimen and result description and comments
Type:String
Example:Hand picked from mag separated sample
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.description
3.121Instrument Codes, instrument_codesListColon-delimited list of instrument codes
Vocabulary
Description:Colon-delimited list of instrument codes
Type:List
Validation:
Vocabulary
Any values in this column could contain a value found in the instrument_code suggested vocabulary. If not, the value will be added to the suggested vocabulary when the contribution is made public.
1.0 Column:specimens.instrument_codes
3.122Software Packages, software_packagesListColon-delimited list of software used for data reduction
Description:Colon-delimited list of software used for data reduction
Type:List
Examples:PmagPy v1.67
FORCinel v1.11
1.0 Column:specimens.software_packages
3.123Research Scientist Names, scientistsListColon-delimited list of EarthRef handles or ORCIDs or names and emails for scientists or technicians who described and prepared the specimen
Validation
Description:Colon-delimited list of EarthRef handles or ORCIDs or names and emails for scientists or technicians who described and prepared the specimen
Type:List
Example:@user1:@user2:0000-0002-9000-2100:Not A. Member <no.earthref.handle@gmail.com>
Validation:
Validation
Any values in this column could contain a user's ORCID iD or an EarthRef.org user's handle. If neither are known, the column value should include the user's email address and the they will be contacted when the contribution is made public.
1.0 Column:specimens.scientists
3.124Analyst Names, analystsListColon-delimited list of EarthRef handles, ORCIDs, or names and emails for analysts, technicians, or scientists who ran the experiment on the specimen
Validation
Description:Colon-delimited list of EarthRef handles, ORCIDs, or names and emails for analysts, technicians, or scientists who ran the experiment on the specimen
Type:List
Example:@user1:@user2:0000-0002-9000-2100:Not A. Member <no.earthref.handle@gmail.com>
Validation:
Validation
Any values in this column could contain a user's ORCID iD or an EarthRef.org user's handle. If neither are known, the column value should include the user's email address and the they will be contacted when the contribution is made public.
1.0 Column:specimens.analysts
3.125Overall Method Citation, method_citationStringCitation that describes the overall methods used in determining the age
Recommended
Description:Citation that describes the overall methods used in determining the age
Notes:DOI preferred
Type:String
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:specimens.method_citation
3.126Method Codes, method_codesListColon-delimited list of method codes
Vocabulary
Description:Colon-delimited list of method codes
Type:List
Validation:
Vocabulary
Any values in this column must contain a value found in the Method Codes controlled vocabulary.
1.0 Column:specimens.method_codes
4.Experiments, experiments
38
A group of step-heating or total fusion measurements to determine the age of a specimen
Contribution Group
2
4.1Contribution ID, contribution_idIntegerUnique contribution id
Download Only
Description:Unique contribution id
Notes:Written during contribution publication
Type:Integer
Example:5412
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:experiments.contribution_id
4.2Contribution Row ID, row_idIntegerUnique row ID within a KArAr Contribution
Download Only
Description:Unique row ID within a KArAr Contribution
Notes:Written during contribution publication
Type:Integer
Example:743
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:experiments.row_id
Description Group
8
4.3Experiment Name, experimentStringExperiment identifier
Required
Description:Experiment identifier
Notes:A group of step-heating measurements or total fusion measurements to determine an age of a specimen
Type:String
Example:14D26122
Validations:key()
Required
The values in this column must not be empty.

unique()
1.0 Column:experiments.experiment
4.4Specimen Name (Unique Irradiation Label), specimenStringName for specimen or unique irradiation label
Required
Description:Name for specimen or unique irradiation label
Type:String
Examples:SFVP01-01a
ICDP5054EXF4601

6D24-23
Validations:key()
Required
The values in this column must not be empty.
1.0 Column:experiments.specimen
4.5Experiment Type, experiment_typeStringType of experiment performed
Vocabulary
Description:Type of experiment performed
Type:String
Example:Incremental Heating
Validation:
Vocabulary
Any values in this column must contain a value found in the experiment_type controlled vocabulary.
1.0 Column:experiments.experiment_type
4.6Extraction Method, extraction_methodStringMethod of extraction used to release the gas
Vocabulary
Description:Method of extraction used to release the gas
Type:String
Example:Bulk Laser Heating
Validation:
Vocabulary
Any values in this column must contain a value found in the extraction_method controlled vocabulary.
1.0 Column:experiments.extraction_method
4.7Analysis Batch Name or Number, analysis_batch_locationStringThe name or number of the batch or tray location in which specimen was analyzed
Recommended
Description:The name or number of the batch or tray location in which specimen was analyzed
Type:String
Examples:24F-010
18D-029-D2
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.analysis_batch_location
4.8Weight Analyzed Specimen, analysis_weightNumber in mgWeight of the specimen (split) that was analyzed
Recommended
Description:Weight of the specimen (split) that was analyzed
Type:Number
Unit:mg
Example:20.1
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.analysis_weight
4.9Analysis Heating Duration, analysis_heating_durationNumber in secDuration of the heating analysis in seconds
Description:Duration of the heating analysis in seconds
Type:Number
Unit:sec
Examples:1.5
5
1.0 Column:experiments.analysis_heating_duration
4.10Analysis Isolation Duration, analysis_isolation_durationNumber in minDuration of the isolation analysis in minutes
Description:Duration of the isolation analysis in minutes
Type:Number
Unit:min
Examples:120
255
1.0 Column:experiments.analysis_isolation_duration
Age Group
22
4.11Age Calculation Method, age_calculation_methodStringMethod by which the age was determined
Required
Vocabulary
Description:Method by which the age was determined
Type:String
Examples:Plateau
Normal Isochron

Inverse Isochron

Total Fusion
Validations:key()
Vocabulary
Any values in this column must contain a value found in the age_calculation_method controlled vocabulary.

Required
The values in this column must not be empty.
1.0 Column:experiments.age_calculation_method
4.12Age Is Preferred, age_is_preferredFlagLabel the age as preferred within its age type group
Required (?)
Description:Label the age as preferred within its age type group
Notes:A specimen can have one preferred age (experiment) per age interpretation group. For example, in each sample there could be one preferred eruption age interpretation and one preferred alteration age interpretation, which depends on the different specimen materials dated.
Type:String
Unit:Flag
Examples:True
False
Validation:requiredUnlessLegacy()
1.0 Column:experiments.age_is_preferred
4.13Age, ageNumberAge
Required
Description:Age
Type:Number
Example:0.9287
Validation:
Required
The values in this column must not be empty.
1.0 Column:experiments.age
4.14Age Standard Error (One Sigma, Analytical), age_sigma_analyticalNumberOne sigma standard error including analytical uncertainties only
Required
Description:One sigma standard error including analytical uncertainties only
Notes:Includes uncertainties in the measurements themselves only. These typically include uncertainties on the measured intercept values, baseline corrections, blank corrections, atmospheric corrections, mass fractionation corrections, collector calibration corrections, irradiation produced interference corrections. This does neither include the measured flux monitor J-value uncertainty nor any applied external uncertainties from the used decay constants and the flux monitor age.
Type:Number
Unit:Custom
Examples:1.5
.98

.004
Validation:
Required
The values in this column must not be empty.
1.0 Column:experiments.age_sigma_analytical
4.15Age Standard Error (One Sigma, Internal), age_sigma_internalNumberOne sigma standard error including analytical uncertainties plus the J-value uncertainty
Recommended
Description:One sigma standard error including analytical uncertainties plus the J-value uncertainty
Notes:Includes all analytical uncertainties plus the measured flux monitor J-value uncertainty. This does not include any applied external uncertainties from the used decay constants and the flux monitor age.
Type:Number
Unit:Custom
Examples:0.23
25
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.age_sigma_internal
4.16Age Standard Error (One Sigma, External), age_sigma_externalNumberOne sigma standard error including analytical uncertainties plus the J-value uncertainty as well as uncertainties on the decay constants and the assigned flux monitor age
Recommended
Description:One sigma standard error including analytical uncertainties plus the J-value uncertainty as well as uncertainties on the decay constants and the assigned flux monitor age
Notes:Includes all analytical uncertainties plus the measured flux monitor J-value uncertainty and all applied external uncertainties from the used decay constants and the flux monitor age.
Type:Number
Unit:Custom
Examples:0.212
32
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.age_sigma_external
4.17Age Unit, age_unitStringSpecimen age unit
Required
Vocabulary
Description:Specimen age unit
Type:String
Examples:Ga
Ma

ka

BP

BP Cal

AD

AD Cal

BC

BC Cal
Validations:
Vocabulary
Any values in this column must contain a value found in the Age Units controlled vocabulary.

Required
The values in this column must not be empty.
1.0 Column:experiments.age_unit
4.18Age MSWD, age_mswdNumberMSWD
Recommended
Description:MSWD
Type:Number
Example:1.648885
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.age_mswd
4.19Age Error Magnification, age_error_magnificationNumberError magnification
Recommended
Description:Error magnification
Type:Number
Example:1
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.age_error_magnification
4.20Age Plateau Width, age_plateau_widthNumber in PercentWidth of age plateau in percentage of total 39Ar(k) released
Recommended
Description:Width of age plateau in percentage of total 39Ar(k) released
Type:Number
Unit:Percent
Example:71.255735
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.age_plateau_width
4.21Age N, age_nIntegerNumber of steps in the calculation
Recommended
Description:Number of steps in the calculation
Type:Integer
Example:20
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.age_n
4.22Age Steps, age_stepsListColon-delimited ordered list of step measurement names
Recommended
Description:Colon-delimited ordered list of step measurement names
Type:List
Example:14D26130:14D26132:14D26133:14D26135:14D26136:14D26138:14D26141:14D26144:14D26145:14D26147:14D26148:14D26150:14D26151:14D26153:14D26154
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.age_steps
4.23K/Ca Ratio, k_ca_ratioNumberCalculated K/Ca ratio determined from averaging over experiment
Recommended
Description:Calculated K/Ca ratio determined from averaging over experiment
Type:Number
Example:2.99E-02
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.k_ca_ratio
4.24K/Ca Ratio (One Sigma), k_ca_ratio_sigmaNumberOne sigma uncertainty on calculated K/Ca ratio
Recommended
Description:One sigma uncertainty on calculated K/Ca ratio
Type:Number
Example:5.93E-03
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.k_ca_ratio_sigma
4.25Assumed Trapped ⁴⁰Ar/³⁶Ar Ratio, 40ar_36ar_trappedNumberAssumed trapped ⁴⁰Ar/³⁶Ar ratio in plateau and total fusion model age calculations
Required (?)
Recommended
Description:Assumed trapped ⁴⁰Ar/³⁶Ar ratio in plateau and total fusion model age calculations
Type:Number
Example:297.0133084
Validations:
Recommended
The values in this column are recommended not to be empty.

requiredIfAgeCalculationMethod("Plateau")

requiredIfAgeCalculationMethod("Total Fusion")
1.0 Column:experiments.40ar_36ar_trapped
4.26Assumed Trapped ⁴⁰Ar/³⁶Ar Ratio (One Sigma), 40ar_36ar_trapped_sigmaNumberOne sigma uncertainty on assumed trapped ⁴⁰Ar/³⁶Ar ratio
Required (?)
Recommended
Description:One sigma uncertainty on assumed trapped ⁴⁰Ar/³⁶Ar ratio
Type:Number
Example:2.589015
Validations:
Recommended
The values in this column are recommended not to be empty.

requiredIfAgeCalculationMethod("Plateau")

requiredIfAgeCalculationMethod("Total Fusion")
1.0 Column:experiments.40ar_36ar_trapped_sigma
4.27Calculated ⁴⁰Ar/³⁹Ar Ratio, 40ar_39ar_ratioNumberCalculated ⁴⁰Ar/³⁹Ar ratio determined from averaging over experiment or from intercepts in isochron calculations
Required (?)
Description:Calculated ⁴⁰Ar/³⁹Ar ratio determined from averaging over experiment or from intercepts in isochron calculations
Type:Number
Example:0.327817
Validation:requiredUnlessLegacy()
1.0 Column:experiments.40ar_39ar_ratio
4.28Calculated ⁴⁰Ar/³⁹Ar Ratio Sigma (One Sigma), 40ar_39ar_ratio_sigmaNumberOne sigma uncertainty on calculated ⁴⁰Ar/³⁹Ar ratio
Required (?)
Description:One sigma uncertainty on calculated ⁴⁰Ar/³⁹Ar ratio
Type:Number
Example:1.63E-03
Validation:requiredUnlessLegacy()
1.0 Column:experiments.40ar_39ar_ratio_sigma
4.29Calculated ⁴⁰Ar/³⁶Ar Ratio, 40ar_36ar_ratioNumberCalculated ⁴⁰Ar/³⁶Ar ratio determined from intercepts in isochron calculations
Required (?)
Recommended
Description:Calculated ⁴⁰Ar/³⁶Ar ratio determined from intercepts in isochron calculations
Type:Number
Example:297.01330
Validations:
Recommended
The values in this column are recommended not to be empty.

requiredIfAgeCalculationMethod("Normal Isochron")

requiredIfAgeCalculationMethod("Inverse Isochron")
1.0 Column:experiments.40ar_36ar_ratio
4.30Calculated ⁴⁰Ar/³⁶Ar Ratio (One Sigma), 40ar_36ar_ratio_sigmaNumberOne sigma uncertainty on calculated ⁴⁰Ar/³⁶Ar ratio
Required (?)
Recommended
Description:One sigma uncertainty on calculated ⁴⁰Ar/³⁶Ar ratio
Type:Number
Example:2.58901
Validations:
Recommended
The values in this column are recommended not to be empty.

requiredIfAgeCalculationMethod("Normal Isochron")

requiredIfAgeCalculationMethod("Inverse Isochron")
1.0 Column:experiments.40ar_36ar_ratio_sigma
4.31Isochron Convergence, isochron_convergenceNumberConvergence reached in isochron calculations
Recommended
Description:Convergence reached in isochron calculations
Type:Number
Example:3
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.isochron_convergence
4.32Isochron Iterations, isochron_iterationsIntegerNumber of applied iterations in isochron calculations
Recommended
Description:Number of applied iterations in isochron calculations
Type:Integer
Example:2
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.isochron_iterations
Metadata Group
6
4.33Description, descriptionStringExperiment description and comments
Recommended
Description:Experiment description and comments
Type:String
Example:Specimen in the same disk as some very old (>3 Ga) samples
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.description
4.34Instrument Codes, instrument_codesListColon-delimited list of instrument codes
Recommended
Description:Colon-delimited list of instrument codes
Notes:It is prefered to use a persistent ID (PID). For more info on instrument PIDs see: https://datacite.org/blog/pids-for-instruments-a-way-forward/
Type:List
Examples:https://www.fdsn.org/networks/detail/SH/
SIO-Bubba

IRM-OldBlue
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.instrument_codes
4.35Software Packages, software_packagesListColon-delimited list of software used for data collection, reduction, and analysis
Recommended
Description:Colon-delimited list of software used for data collection, reduction, and analysis
Type:List
Examples:Mass Spec 5.02
ArArCALC v2.5.2
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:experiments.software_packages
4.36Research Scientist Names, scientistsListColon-delimited list of EarthRef handles, ORCIDs, or names and emails for analysts, technicians, or scientists who ran the experiment.
Validation
Description:Colon-delimited list of EarthRef handles, ORCIDs, or names and emails for analysts, technicians, or scientists who ran the experiment.
Type:List
Example:@user1:@user2:0000-0002-9000-2100:Not A. Member <no.earthref.handle@gmail.com>
Validation:
Validation
Any values in this column could contain a user's ORCID iD or an EarthRef.org user's handle. If neither are known, the column value should include the user's email address and the they will be contacted when the contribution is made public.
1.0 Column:experiments.scientists
4.37Analyst Names, analystsListColon-delimited list of EarthRef handles, ORCIDs, or names and emails for analysts, technicians, or scientists who ran the experiment.
Validation
Description:Colon-delimited list of EarthRef handles, ORCIDs, or names and emails for analysts, technicians, or scientists who ran the experiment.
Type:List
Example:@user1:@user2:0000-0002-9000-2100:Not A. Member <no.earthref.handle@gmail.com>
Validation:
Validation
Any values in this column could contain a user's ORCID iD or an EarthRef.org user's handle. If neither are known, the column value should include the user's email address and the they will be contacted when the contribution is made public.
1.0 Column:experiments.analysts
4.38Method Codes, method_codesListColon-delimited list of method codes
Vocabulary
Description:Colon-delimited list of method codes
Type:List
Validation:
Vocabulary
Any values in this column must contain a value found in the Method Codes controlled vocabulary.
1.0 Column:experiments.method_codes
5.Measurements, measurements
111
Measurements
Contribution Group
2
5.1Contribution ID, contribution_idIntegerUnique KArAr Contribution ID
Download Only
Description:Unique KArAr Contribution ID
Notes:Written during contribution publication
Type:Integer
Example:5412
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:measurements.contribution_id
5.2Contribution Row ID, row_idIntegerUnique row ID within a KArAr Contribution
Download Only
Description:Unique row ID within a KArAr Contribution
Notes:Written during contribution publication
Type:Integer
Example:743
Validation:
Download Only
The value in this column is included in downloaded contributions, but is ignored in uploaded contributions.
1.0 Column:measurements.row_id
Description Group
2
5.3Measurement Name, measurementStringUnique measurement identifier
Required
Description:Unique measurement identifier
Type:String
Examples:SFVP01-01a-LT-AF-Z-1
SFVP01-01a-LT-AF-Z-2

SFVP01-01a-LT-T-Z-1
Validations:unique()
key()

Required
The values in this column must not be empty.
1.0 Column:measurements.measurement
5.4Experiment Name, experimentStringName for experiment
Required
Description:Name for experiment
Type:String
Example:SFVP01-01a-LT-AF-Z
Validation:
Required
The values in this column must not be empty.
1.0 Column:measurements.experiment
Measurement Step Group
13
5.5Age, ageNumberAge calculated from the gas released from one heating step
Required
Description:Age calculated from the gas released from one heating step
Type:Number
Example:46.171427
Validation:
Required
The values in this column must not be empty.
1.0 Column:measurements.age
5.6Age Standard Error (One Sigma, Analytical), age_sigma_analyticalNumberOne sigma standard error including analytical uncertainties only
Required
Description:One sigma standard error including analytical uncertainties only
Notes:Includes uncertainties in the measurements themselves only. These typically include uncertainties on the measured intercept values, baseline corrections, blank corrections, atmospheric corrections, mass fractionation corrections, collector calibration corrections, irradiation produced interference corrections. This does neither include the measured flux monitor J-value uncertainty nor any applied external uncertainties from the used decay constants and the flux monitor age.
Type:Number
Unit:Custom
Examples:1.5
.98

.004
Validation:
Required
The values in this column must not be empty.
1.0 Column:measurements.age_sigma_analytical
5.7Age Unit, age_unitStringUnit of the age value
Required
Vocabulary
Description:Unit of the age value
Type:String
Examples:Ga
Ma

ka

BP

BP Cal

AD

AD Cal

BC

BC Cal
Validations:
Vocabulary
Any values in this column must contain a value found in the Age Units controlled vocabulary.

Required
The values in this column must not be empty.
1.0 Column:measurements.age_unit
5.8Fraction of Radiogenic ⁴⁰Ar, fraction_40ar_radiogenicNumberFraction of ⁴⁰Ar from radiogenic ⁴⁰K source
Required (?)
Description:Fraction of ⁴⁰Ar from radiogenic ⁴⁰K source
Type:Number
Example:75.056859
Validation:requiredUnlessLegacy()
1.0 Column:measurements.fraction_40ar_radiogenic
5.9Fraction of ³⁹Ar from K, fraction_39ar_kNumberFraction of ³⁹Ar from potassium
Required (?)
Description:Fraction of ³⁹Ar from potassium
Type:Number
Example:0.699600
Validation:requiredUnlessLegacy()
1.0 Column:measurements.fraction_39ar_k
5.10K/Ca Ratio, k_ca_ratioNumberPotassium to calcium ratio calculated from the Ar gas measurements
Required (?)
Description:Potassium to calcium ratio calculated from the Ar gas measurements
Type:Number
Example:0.023552
Validation:requiredUnlessLegacy()
1.0 Column:measurements.k_ca_ratio
5.11K/Ca Ratio (One Sigma), k_ca_ratio_sigmaNumberOne sigma standard deviation of the potassium to calcium ratio
Required (?)
Description:One sigma standard deviation of the potassium to calcium ratio
Type:Number
Example:0.002046
Validation:requiredUnlessLegacy()
1.0 Column:measurements.k_ca_ratio_sigma
5.12Sequence, sequenceIntegerOrder of the measurements
Recommended
Description:Order of the measurements
Type:Integer
Examples:-50
0

1

343
Validations:unique()
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.sequence
5.13Measurement Time Zero, time_zeroTimestampISO 8601 date and time (e.g. "yyyy-mm-ddThh:mm:ss.sssZ")
Required (?)
Description:ISO 8601 date and time (e.g. "yyyy-mm-ddThh:mm:ss.sssZ")
Type:Timestamp
Examples:2021-01-01T10:02:34.87
2020-07-20T22:56:15-04:00
Validation:requiredUnlessLegacy()
1.0 Column:measurements.time_zero
5.14Measurement Type, measurement_typeStringIndicating if a standard (s), flux monitor (f), or an unknown (u) measurement
Vocabulary
Description:Indicating if a standard (s), flux monitor (f), or an unknown (u) measurement
Type:String
Examples:s
f

u
Validation:
Vocabulary
Any values in this column must contain a value found in the Measurement Type controlled vocabulary.
1.0 Column:measurements.measurement_type
5.15Temperature, tempNumberHeating temperature of the measurement step as defined by Temperature Unit
Required (?)
Description:Heating temperature of the measurement step as defined by Temperature Unit
Type:Number
Examples:200
1.5
Validation:requiredUnlessLegacy()
1.0 Column:measurements.temp
5.16Temperature Unit, temp_unitStringTemperature Unit
Required
Vocabulary
Description:Temperature Unit
Type:String
Examples:Celcius
Watts
Validations:
Vocabulary
Any values in this column must contain a value found in the temp_unit controlled vocabulary.

Required
The values in this column must not be empty.
1.0 Column:measurements.temp_unit
5.17Number of Decay Days since Irradiation, decay_daysNumber in daysNumber of days between the end of the irradiation and the measurement
Description:Number of days between the end of the irradiation and the measurement
Type:Number
Unit:days
Examples:143
64

15.4
1.0 Column:measurements.decay_days
Intercepts Group
16
5.18³⁶Ar Intercept, intercept_36arNumber³⁶Ar isotopic signal evolution corrected extrapolated back to zero time.
Required (?)
Description:³⁶Ar isotopic signal evolution corrected extrapolated back to zero time.
Type:Number
Example:0.049369
Validation:requiredUnlessLegacy()
1.0 Column:measurements.intercept_36ar
5.19³⁶Ar Intercept (One Sigma), intercept_36ar_sigmaNumberStandard deviation of the corrected ³⁶Ar intercept at one sigma
Required (?)
Description:Standard deviation of the corrected ³⁶Ar intercept at one sigma
Type:Number
Example:0.000595
Validation:requiredUnlessLegacy()
1.0 Column:measurements.intercept_36ar_sigma
5.20³⁶Ar Regression Type, intercept_36ar_regression_typeStringType of fit to the decay (regression) of the ³⁶Ar ionic gas signal.
Recommended
Description:Type of fit to the decay (regression) of the ³⁶Ar ionic gas signal.
Type:String
Examples:Linear
Parabolic

Cubic
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.intercept_36ar_regression_type
5.21³⁷Ar Intercept, intercept_37arNumber³⁷Ar isotopic signal evolution corrected extrapolated back to zero time.
Required (?)
Description:³⁷Ar isotopic signal evolution corrected extrapolated back to zero time.
Type:Number
Example:0.490369
Validation:requiredUnlessLegacy()
1.0 Column:measurements.intercept_37ar
5.22³⁷Ar Intercept (One Sigma), intercept_37ar_sigmaNumberStandard deviation of the corrected ³⁶Ar intercept at one sigma
Required (?)
Description:Standard deviation of the corrected ³⁶Ar intercept at one sigma
Type:Number
Example:0.030336
Validation:requiredUnlessLegacy()
1.0 Column:measurements.intercept_37ar_sigma
5.23³⁷Ar Regression Type, intercept_37ar_regression_typeStringType of fit to the decay (regression) of the ³⁶Ar ionic gas signal.
Recommended
Description:Type of fit to the decay (regression) of the ³⁶Ar ionic gas signal.
Type:String
Examples:Linear
Parabolic

Cubic
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.intercept_37ar_regression_type
5.24³⁸Ar Intercept, intercept_38arNumber³⁸Ar isotopic signal evolution corrected extrapolated back to zero time.
Required (?)
Description:³⁸Ar isotopic signal evolution corrected extrapolated back to zero time.
Type:Number
Example:-0.017148
Validation:requiredUnlessLegacy()
1.0 Column:measurements.intercept_38ar
5.25³⁸Ar Intercept (One Sigma), intercept_38ar_sigmaNumberStandard deviation of the corrected ³⁶Ar intercept at one sigma
Required (?)
Description:Standard deviation of the corrected ³⁶Ar intercept at one sigma
Type:Number
Example:0.025811
Validation:requiredUnlessLegacy()
1.0 Column:measurements.intercept_38ar_sigma
5.26³⁸Ar Regression Type, intercept_38ar_regression_typeStringType of fit to the decay (regression) of the ³⁶Ar ionic gas signal.
Recommended
Description:Type of fit to the decay (regression) of the ³⁶Ar ionic gas signal.
Type:String
Examples:Linear
Parabolic

Cubic
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.intercept_38ar_regression_type
5.27³⁹Ar Intercept, intercept_39arNumber³⁹Ar isotopic signal evolution corrected extrapolated back to zero time.
Required (?)
Description:³⁹Ar isotopic signal evolution corrected extrapolated back to zero time.
Type:Number
Example:1.416676
Validation:requiredUnlessLegacy()
1.0 Column:measurements.intercept_39ar
5.28³⁹Ar Intercept (One Sigma), intercept_39ar_sigmaNumberStandard deviation of the corrected ³⁶Ar intercept at one sigma
Required (?)
Description:Standard deviation of the corrected ³⁶Ar intercept at one sigma
Type:Number
Example:0.026428
Validation:requiredUnlessLegacy()
1.0 Column:measurements.intercept_39ar_sigma
5.29³⁹Ar Regression Type, intercept_39ar_regression_typeStringType of fit to the decay (regression) of the ³⁶Ar ionic gas signal.
Recommended
Description:Type of fit to the decay (regression) of the ³⁶Ar ionic gas signal.
Type:String
Examples:Linear
Parabolic

Cubic
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.intercept_39ar_regression_type
5.30⁴⁰Ar Intercept, intercept_40arNumber⁴⁰Ar isotopic signal evolution corrected extrapolated back to zero time.
Required (?)
Description:⁴⁰Ar isotopic signal evolution corrected extrapolated back to zero time.
Type:Number
Example:33.930073
Validation:requiredUnlessLegacy()
1.0 Column:measurements.intercept_40ar
5.31⁴⁰Ar Intercept (One Sigma), intercept_40ar_sigmaNumberStandard deviation of the corrected ³⁶Ar intercept at one sigma
Required (?)
Description:Standard deviation of the corrected ³⁶Ar intercept at one sigma
Type:Number
Example:0.029470
Validation:requiredUnlessLegacy()
1.0 Column:measurements.intercept_40ar_sigma
5.32⁴⁰Ar Regression Type, intercept_40ar_regression_typeStringType of fit to the decay (regression) of the ³⁶Ar ionic gas signal.
Recommended
Description:Type of fit to the decay (regression) of the ³⁶Ar ionic gas signal.
Type:String
Examples:Linear
Parabolic

Cubic
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.intercept_40ar_regression_type
5.33Intercept Unit, intercept_unitStringType of unit used for the intercept
Required (?)
Description:Type of unit used for the intercept
Type:String
Examples:nA
fA

mV

counts/sec
Validation:requiredUnlessLegacy()
1.0 Column:measurements.intercept_unit
Blanks Group
11
5.34³⁶Ar Blank, blank_36arNumberMeasurement of ³⁶Ar blank
Recommended
Description:Measurement of ³⁶Ar blank
Type:Number
Example:0.0201
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.blank_36ar
5.35³⁶Ar Blank (One Sigma), blank_36ar_sigmaNumberOne sigma standard deviation of the ³⁶Ar blank
Recommended
Description:One sigma standard deviation of the ³⁶Ar blank
Type:Number
Example:0.000671
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.blank_36ar_sigma
5.36³⁷Ar Blank, blank_37arNumberMeasurement of ³⁷Ar blank
Recommended
Description:Measurement of ³⁷Ar blank
Type:Number
Example:-0.0124
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.blank_37ar
5.37³⁷Ar Blank (One Sigma), blank_37ar_sigmaNumberOne sigma standard deviation of the ³⁷Ar blank
Recommended
Description:One sigma standard deviation of the ³⁷Ar blank
Type:Number
Example:0.0285
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.blank_37ar_sigma
5.38³⁸Ar Blank, blank_38arNumberMeasurement of ³⁸Ar blank
Recommended
Description:Measurement of ³⁸Ar blank
Type:Number
Example:-0.0655
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.blank_38ar
5.39³⁸Ar Blank (One Sigma), blank_38ar_sigmaNumberOne sigma standard deviation of the ³⁸Ar blank
Recommended
Description:One sigma standard deviation of the ³⁸Ar blank
Type:Number
Example:0.0265045
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.blank_38ar_sigma
5.40³⁹Ar Blank, blank_39arNumberMeasurement of ³⁹Ar blank
Recommended
Description:Measurement of ³⁹Ar blank
Type:Number
Example:-0.032992
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.blank_39ar
5.41³⁹Ar Blank (One Sigma), blank_39ar_sigmaNumberOne sigma standard deviation of the ³⁹Ar blank
Recommended
Description:One sigma standard deviation of the ³⁹Ar blank
Type:Number
Example:0.025284
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.blank_39ar_sigma
5.42⁴⁰Ar Blank, blank_40arNumberMeasurement of ⁴⁰Ar blank
Recommended
Description:Measurement of ⁴⁰Ar blank
Type:Number
Example:5.918450
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.blank_40ar
5.43⁴⁰Ar Blank (One Sigma), blank_40ar_sigmaNumberOne sigma standard deviation of the ⁴⁰Ar blank
Recommended
Description:One sigma standard deviation of the ⁴⁰Ar blank
Type:Number
Example:0.0887
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.blank_40ar_sigma
5.44Blank Unit, blank_unitStringType of unit used for the blank measurement
Recommended
Description:Type of unit used for the blank measurement
Type:String
Examples:nA
fA

mV

counts/sec
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.blank_unit
Mass Discrimination Group
5
5.45Mass Discrimination Factor, mdf_valueNumberValue used to correct ion beam measurements due to systematic differences in measurement values due to isotopic mass differences
Required (?)
Description:Value used to correct ion beam measurements due to systematic differences in measurement values due to isotopic mass differences
Type:Number
Example:0.992978
Validation:requiredUnlessLegacy()
1.0 Column:measurements.mdf_value
5.46Mass Discrimination Factor (One Sigma), mdf_value_sigmaNumberOne sigma uncertainty on the mass discrimination factor
Required (?)
Description:One sigma uncertainty on the mass discrimination factor
Type:Number
Example:6.62410E-04
Validation:requiredUnlessLegacy()
1.0 Column:measurements.mdf_value_sigma
5.47Mass Discrimination Interpolation Type, mdf_law_appliedStringType of interpolation used for calculating the mass discrimination values
Required
Vocabulary
Description:Type of interpolation used for calculating the mass discrimination values
Type:String
Example:Linear
Validations:
Vocabulary
Any values in this column must contain a value found in the mdf_law controlled vocabulary.

Required
The values in this column must not be empty.
1.0 Column:measurements.mdf_law_applied
5.48⁴⁰Ar/³⁶Ar Standard Ratio, mdf_40ar_36ar_standard_ratioNumberUsually the ⁴⁰Ar/³⁶Ar for atmospheric argon that is commonly used as the standard for determining mass discrimination
Required (?)
Description:Usually the ⁴⁰Ar/³⁶Ar for atmospheric argon that is commonly used as the standard for determining mass discrimination
Type:Number
Examples:295.5
298.56
Validation:requiredUnlessLegacy()
1.0 Column:measurements.mdf_40ar_36ar_standard_ratio
5.49⁴⁰Ar/³⁶Ar Standard Ratio (One Sigma), mdf_40ar_36ar_standard_ratio_sigmaNumberOne sigma standard deviation of the ⁴⁰Ar/³⁶Ar ratio of the standard
Required (?)
Description:One sigma standard deviation of the ⁴⁰Ar/³⁶Ar ratio of the standard
Type:Number
Examples:0.74
0.31
Validation:requiredUnlessLegacy()
1.0 Column:measurements.mdf_40ar_36ar_standard_ratio_sigma
Isotopic Ratios Group
18
5.50Total ³⁶Ar ³⁹Ar Ratio, total_36ar_39ar_ratioNumberTotal ³⁶Ar ³⁹Ar ratio corrected for the blank
Recommended
Description:Total ³⁶Ar ³⁹Ar ratio corrected for the blank
Type:Number
Example:0.0209
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.total_36ar_39ar_ratio
5.51Total ³⁶Ar ³⁹Ar Ratio (One Sigma), total_36ar_39ar_ratio_sigmaNumberOne sigma uncertainty on the total ³⁶Ar ³⁹Ar ratio corrected for the blank
Recommended
Description:One sigma uncertainty on the total ³⁶Ar ³⁹Ar ratio corrected for the blank
Type:Number
Example:0.000833
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.total_36ar_39ar_ratio_sigma
5.52Total ³⁷Ar ³⁹Ar Ratio, total_37ar_39ar_ratioNumberTotal ³⁷Ar ³⁹Ar ratio corrected for the blank
Recommended
Description:Total ³⁷Ar ³⁹Ar ratio corrected for the blank
Type:Number
Example:20.809429
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.total_37ar_39ar_ratio
5.53Total ³⁷Arr ³⁹Ar K Ratio (One Sigma), total_37ar_39ar_ratio_sigmaNumberOne sigma uncertainty on the total ³⁷Ar ³⁹Ar ratio corrected for the blank
Recommended
Description:One sigma uncertainty on the total ³⁷Ar ³⁹Ar ratio corrected for the blank
Type:Number
Example:0.5689
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.total_37ar_39ar_ratio_sigma
5.54Total ⁴⁰Ar ³⁹Ar Ratio, total_40ar_39ar_ratioNumberTotal ⁴⁰Ar ³⁹Ar ratio corrected for the blank
Recommended
Description:Total ⁴⁰Ar ³⁹Ar ratio corrected for the blank
Type:Number
Example:14.521598
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.total_40ar_39ar_ratio
5.55Total ⁴⁰Ar ³⁹Ar Ratio (One Sigma), total_40ar_39ar_ratio_sigmaNumberOne sigma uncertainty on the total ⁴⁰Ar ³⁹Ar ratio corrected for the blank
Recommended
Description:One sigma uncertainty on the total ⁴⁰Ar ³⁹Ar ratio corrected for the blank
Type:Number
Example:0.439796
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.total_40ar_39ar_ratio_sigma
5.56Total ⁴⁰Ar Rad ³⁹Ar K Ratio, corrected_40ar_rad_39ar_k_ratioNumber⁴⁰Ar radiogenic to ³⁹Ar from potassium ratio corrected for the blank, air, and spurious irradiation production
Recommended
Description:⁴⁰Ar radiogenic to ³⁹Ar from potassium ratio corrected for the blank, air, and spurious irradiation production
Type:Number
Example:0.145
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corrected_40ar_rad_39ar_k_ratio
5.57Total ⁴⁰Ar Rad ³⁹Ar K Ratio (One Sigma), corrected_40ar_rad_39ar_k_ratio_sigmaNumberOne sigma uncertainty on the ⁴⁰Ar radiogenic to ³⁹Ar from potassium ratio corrected for the blank, air, and spurious irradiation production
Recommended
Description:One sigma uncertainty on the ⁴⁰Ar radiogenic to ³⁹Ar from potassium ratio corrected for the blank, air, and spurious irradiation production
Type:Number
Example:0.0025
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corrected_40ar_rad_39ar_k_ratio_sigma
5.58Corrected ³⁹Ar K ³⁶Ar Atm Ratio, corrected_39ar_k_36ar_atm_ratioNumber³⁹Ar K ³⁶Ar ratio corrected for the blank, air, and spurious irradiation production
Recommended
Description:³⁹Ar K ³⁶Ar ratio corrected for the blank, air, and spurious irradiation production
Type:Number
Example:61.281091
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corrected_39ar_k_36ar_atm_ratio
5.59Corrected ³⁹Ar K ³⁶Ar Atm Ratio (One Sigma), corrected_39ar_k_36ar_atm_ratio_sigmaNumberOne sigma uncertainty on the total ³⁹Ar K ³⁶Ar ratio corrected for the blank, air, and spurious irradiation production
Recommended
Description:One sigma uncertainty on the total ³⁹Ar K ³⁶Ar ratio corrected for the blank, air, and spurious irradiation production
Type:Number
Example:3.278702
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corrected_39ar_k_36ar_atm_ratio_sigma
5.60Corrected ⁴⁰Ar Rad Atm ³⁶Ar Atm Ratio, corrected_40ar_rad_atm_36ar_atm_ratioNumber⁴⁰Ar Rad Atm ³⁶Ar ratio corrected for the blank, air, and spurious irradiation production
Recommended
Description:⁴⁰Ar Rad Atm ³⁶Ar ratio corrected for the blank, air, and spurious irradiation production
Type:Number
Example:1185.399405
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corrected_40ar_rad_atm_36ar_atm_ratio
5.61Corrected ⁴⁰Ar Rad Atm ³⁶Ar Atm Ratio (One Sigma), corrected_40ar_rad_atm_36ar_atm_ratio_sigmaNumberOne sigma uncertainty on the total ⁴⁰Ar Rad Atm ³⁶Ar ratio corrected for the blank, air, and spurious irradiation production
Recommended
Description:One sigma uncertainty on the total ⁴⁰Ar Rad Atm ³⁶Ar ratio corrected for the blank, air, and spurious irradiation production
Type:Number
Example:55.849511
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corrected_40ar_rad_atm_36ar_atm_ratio_sigma
5.62Corrected ³⁹Ar K ⁴⁰Ar Rad Atm Ratio, corrected_39ar_k_40ar_rad_atm_ratioNumberTotal ³⁹Ar K ⁴⁰Ar ratio corrected for the blank, air, and spurious irradiation production
Recommended
Description:Total ³⁹Ar K ⁴⁰Ar ratio corrected for the blank, air, and spurious irradiation production
Type:Number
Example:0.0517
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corrected_39ar_k_40ar_rad_atm_ratio
5.63Corrected ³⁹Ar K ⁴⁰Ar Rad Atm Ratio (One Sigma), corrected_39ar_k_40ar_rad_atm_ratio_sigmaNumberOne sigma uncertainty on the total ³⁹Ar K ⁴⁰Ar ratio corrected for the blank, air, and spurious irradiation production
Recommended
Description:One sigma uncertainty on the total ³⁹Ar K ⁴⁰Ar ratio corrected for the blank, air, and spurious irradiation production
Type:Number
Example:0.00133
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corrected_39ar_k_40ar_rad_atm_ratio_sigma
5.64Corrected ³⁶Ar Atm ⁴⁰Ar Rad Atm Ratio, corrected_36ar_atm_40ar_rad_atm_ratioNumberTotal ³⁶Ar Atm ⁴⁰Ar ratio corrected for the blank, air, and spurious irradiation production
Recommended
Description:Total ³⁶Ar Atm ⁴⁰Ar ratio corrected for the blank, air, and spurious irradiation production
Type:Number
Example:0.000844
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corrected_36ar_atm_40ar_rad_atm_ratio
5.65Corrected ³⁶Ar Atm ⁴⁰Ar Rad Atm Ratio (One Sigma), corrected_36ar_atm_40ar_rad_atm_ratio_sigmaNumberOne sigma uncertainty on the total ³⁶Ar Atm ⁴⁰Ar ratio corrected for the blank, air, and spurious irradiation production
Recommended
Description:One sigma uncertainty on the total ³⁶Ar Atm ⁴⁰Ar ratio corrected for the blank, air, and spurious irradiation production
Type:Number
Example:0.0000397
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corrected_36ar_atm_40ar_rad_atm_ratio_sigma
5.66Correlation Coefficient ⁴⁰Ar³⁶Ar Over ³⁹Ar³⁶Ar, corr_coefficient_40_36_over_39_36NumberCorrelation coefficient ⁴⁰Ar ³⁶Ar over ³⁹Ar ³⁶Ar
Recommended
Description:Correlation coefficient ⁴⁰Ar ³⁶Ar over ³⁹Ar ³⁶Ar
Type:Number
Example:0.876178
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corr_coefficient_40_36_over_39_36
5.67Correlation Coefficient ³⁶Ar⁴⁰Ar Over ³⁹Ar⁴⁰Ar, corr_coefficient_36_40_over_39_40NumberCorrelation coefficient ³⁶Ar ⁴⁰Ar over ³⁹Ar ⁴⁰Ar
Recommended
Description:Correlation coefficient ³⁶Ar ⁴⁰Ar over ³⁹Ar ⁴⁰Ar
Type:Number
Example:0.0887
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.corr_coefficient_36_40_over_39_40
Isotopic Components Group
33
5.68Corrected ³⁶Ar Atmospheric, corrected_36ar_atmosphericNumberCorrected ³⁶Ar atmospheric
Description:Corrected ³⁶Ar atmospheric
Type:Number
Example:0.0236
1.0 Column:measurements.corrected_36ar_atmospheric
5.69Corrected ³⁶Ar Atmospheric (One Sigma), corrected_36ar_atmospheric_sigmaNumberOne sigma uncertainty on the corrected ³⁶Ar atmospheric value
Description:One sigma uncertainty on the corrected ³⁶Ar atmospheric value
Type:Number
Example:0.00111
1.0 Column:measurements.corrected_36ar_atmospheric_sigma
5.70Corrected ³⁶Ar Cosmogenic, corrected_36ar_cosmogenicNumberCorrected ³⁶Ar cosmogenic
Description:Corrected ³⁶Ar cosmogenic
Type:Number
Example:0
1.0 Column:measurements.corrected_36ar_cosmogenic
5.71Corrected ³⁶Ar Cosmogenic (One Sigma), corrected_36ar_cosmogenic_sigmaNumberOne sigma uncertainty on the corrected ³⁶Ar cosmogenic value
Description:One sigma uncertainty on the corrected ³⁶Ar cosmogenic value
Type:Number
Example:0
1.0 Column:measurements.corrected_36ar_cosmogenic_sigma
5.72Corrected ³⁶Ar Calcium, corrected_36ar_calciumNumberCorrected ³⁶Ar calcium
Description:Corrected ³⁶Ar calcium
Type:Number
Example:0.00702
1.0 Column:measurements.corrected_36ar_calcium
5.73Corrected ³⁶Ar Calcium (One Sigma), corrected_36ar_calcium_sigmaNumberOne sigma uncertainty on the corrected ³⁶Ar calcium value
Description:One sigma uncertainty on the corrected ³⁶Ar calcium value
Type:Number
Example:0.000583
1.0 Column:measurements.corrected_36ar_calcium_sigma
5.74Corrected ³⁶Ar Chlorine, corrected_36ar_chlorineNumberCorrected ³⁶Ar chlorine
Description:Corrected ³⁶Ar chlorine
Type:Number
Example:0.0000082
1.0 Column:measurements.corrected_36ar_chlorine
5.75Corrected ³⁶Ar Chlorine (One Sigma), corrected_36ar_chlorine_sigmaNumberCorrected ³⁶Ar chlorine uncertainty at one sigma
Description:Corrected ³⁶Ar chlorine uncertainty at one sigma
Type:Number
Example:0.0000121
1.0 Column:measurements.corrected_36ar_chlorine_sigma
5.76Corrected ³⁷Ar Calcium, corrected_37ar_calciumNumberCorrected ³⁷Ar calcium
Description:Corrected ³⁷Ar calcium
Type:Number
Example:26.366044
1.0 Column:measurements.corrected_37ar_calcium
5.77Corrected ³⁷Ar Calcium (One Sigma), corrected_37ar_calcium_sigmaNumberOne sigma uncertainty on the corrected ³⁷Ar calcium value
Description:One sigma uncertainty on the corrected ³⁷Ar calcium value
Type:Number
Example:2.189405
1.0 Column:measurements.corrected_37ar_calcium_sigma
5.78Corrected ³⁸Ar Atmospheric, corrected_38ar_atmosphericNumberCorrected ³⁸Ar atmospheric
Description:Corrected ³⁸Ar atmospheric
Type:Number
Example:0.004404
1.0 Column:measurements.corrected_38ar_atmospheric
5.79Corrected ³⁸Ar Atmospheric (One Sigma), corrected_38ar_atmospheric_sigmaNumberOne sigma uncertainty on the corrected ³⁸Ar atmospheric value
Description:One sigma uncertainty on the corrected ³⁸Ar atmospheric value
Type:Number
Example:0.000207
1.0 Column:measurements.corrected_38ar_atmospheric_sigma
5.80Corrected ³⁸Ar Cosmogenic, corrected_38ar_cosmogenicNumberCorrected ³⁸Ar cosmogenic
Description:Corrected ³⁸Ar cosmogenic
Type:Number
Example:0
1.0 Column:measurements.corrected_38ar_cosmogenic
5.81Corrected ³⁸Ar Cosmogenic (One Sigma), corrected_38ar_cosmogenic_sigmaNumberOne sigma uncertainty on the corrected ³⁸Ar cosmogenic value
Description:One sigma uncertainty on the corrected ³⁸Ar cosmogenic value
Type:Number
Example:0
1.0 Column:measurements.corrected_38ar_cosmogenic_sigma
5.82Corrected ³⁸Ar Potassium, corrected_38ar_potassiumNumberCorrected ³⁸Ar potassium
Description:Corrected ³⁸Ar potassium
Type:Number
Example:0.0174
1.0 Column:measurements.corrected_38ar_potassium
5.83Corrected ³⁸Ar Potassium (One Sigma), corrected_38ar_potassium_sigmaNumberOne sigma uncertainty on the corrected ³⁸Ar potassium value
Description:One sigma uncertainty on the corrected ³⁸Ar potassium value
Type:Number
Example:0.000445
1.0 Column:measurements.corrected_38ar_potassium_sigma
5.84Corrected ³⁸Ar Calcium, corrected_38ar_calciumNumberCorrected ³⁸Ar calcium
Description:Corrected ³⁸Ar calcium
Type:Number
Example:0.00189
1.0 Column:measurements.corrected_38ar_calcium
5.85Corrected ³⁸Ar Calcium (One Sigma), corrected_38ar_calcium_sigmaNumberOne sigma uncertainty on the corrected ³⁸Ar calcium value
Description:One sigma uncertainty on the corrected ³⁸Ar calcium value
Type:Number
Example:0.00028
1.0 Column:measurements.corrected_38ar_calcium_sigma
5.86Corrected ³⁸Ar Chlorine, corrected_38ar_chlorineNumberCorrected ³⁸Ar chlorine
Description:Corrected ³⁸Ar chlorine
Type:Number
Example:0.0253
1.0 Column:measurements.corrected_38ar_chlorine
5.87Corrected ³⁸Ar Chlorine (One Sigma), corrected_38ar_chlorine_sigmaNumberOne sigma uncertainty on the corrected ³⁸Ar chlorine value
Description:One sigma uncertainty on the corrected ³⁸Ar chlorine value
Type:Number
Example:0.0375
1.0 Column:measurements.corrected_38ar_chlorine_sigma
5.88Corrected ³⁹Ar Potassium, corrected_39ar_potassiumNumberCorrected ³⁹Ar potassium
Description:Corrected ³⁹Ar potassium
Type:Number
Example:1.4441
1.0 Column:measurements.corrected_39ar_potassium
5.89Corrected ³⁹Ar Potassium (One Sigma), corrected_39ar_potassium_sigmaNumberOne sigma uncertainty on the corrected ³⁹Ar potassium value
Description:One sigma uncertainty on the corrected ³⁹Ar potassium value
Type:Number
Example:0.0369
1.0 Column:measurements.corrected_39ar_potassium_sigma
5.90Corrected ³⁹Ar Calcium, corrected_39ar_calciumNumberCorrected ³⁹Ar calcium
Description:Corrected ³⁹Ar calcium
Type:Number
Example:0.0178
1.0 Column:measurements.corrected_39ar_calcium
5.91Corrected ³⁹Ar Calcium (One Sigma), corrected_39ar_calcium_sigmaNumberOne sigma uncertainty on the corrected ³⁹Ar calcium value
Description:One sigma uncertainty on the corrected ³⁹Ar calcium value
Type:Number
Example:0.0015
1.0 Column:measurements.corrected_39ar_calcium_sigma
5.92Corrected ⁴⁰Ar Radiogenic, corrected_40ar_radiogenicNumberCorrected ⁴⁰Ar radiogenic
Description:Corrected ⁴⁰Ar radiogenic
Type:Number
Example:20.971296
1.0 Column:measurements.corrected_40ar_radiogenic
5.93Corrected ⁴⁰Ar Radiogenic (One Sigma), corrected_40ar_radiogenic_sigmaNumberOne sigma uncertainty on the corrected ⁴⁰Ar radiogenic value
Description:One sigma uncertainty on the corrected ⁴⁰Ar radiogenic value
Type:Number
Example:0.340300
1.0 Column:measurements.corrected_40ar_radiogenic_sigma
5.94Corrected ⁴⁰Ar Atmospheric, corrected_40ar_atmosphericNumberCorrected ⁴⁰Ar atmospheric
Description:Corrected ⁴⁰Ar atmospheric
Type:Number
Example:6.963728
1.0 Column:measurements.corrected_40ar_atmospheric
5.95Corrected ⁴⁰Ar Atmospheric (One Sigma), corrected_40ar_atmospheric_sigmaNumberOne sigma uncertainty on the corrected ⁴⁰Ar atmospheric value
Description:One sigma uncertainty on the corrected ⁴⁰Ar atmospheric value
Type:Number
Example:0.327267
1.0 Column:measurements.corrected_40ar_atmospheric_sigma
5.96Corrected ⁴⁰Ar Cosmogenic, corrected_40ar_cosmogenicNumberCorrected ⁴⁰Ar cosmogenic
Description:Corrected ⁴⁰Ar cosmogenic
Type:Number
Example:0
1.0 Column:measurements.corrected_40ar_cosmogenic
5.97Corrected ⁴⁰Ar Cosmogenic (One Sigma), corrected_40ar_cosmogenic_sigmaNumberOne sigma uncertainty on the corrected ⁴⁰Ar cosmogenic value
Description:One sigma uncertainty on the corrected ⁴⁰Ar cosmogenic value
Type:Number
Example:0
1.0 Column:measurements.corrected_40ar_cosmogenic_sigma
5.98Corrected ⁴⁰Ar Potassium, corrected_40ar_potassiumNumberCorrected ⁴⁰Ar potassium
Description:Corrected ⁴⁰Ar potassium
Type:Number
Example:0.00552
1.0 Column:measurements.corrected_40ar_potassium
5.99Corrected ⁴⁰Ar Potassium (One Sigma), corrected_40ar_potassium_sigmaNumberOne sigma uncertainty on the corrected ⁴⁰Ar potassium value
Description:One sigma uncertainty on the corrected ⁴⁰Ar potassium value
Type:Number
Example:0.00020
1.0 Column:measurements.corrected_40ar_potassium_sigma
5.100Component Unit, component_unitStringType of unit used for the isotopic component measurement
Description:Type of unit used for the isotopic component measurement
Type:String
Examples:nA
fA

mV

counts/sec
1.0 Column:measurements.component_unit
Relative Abundances Group
11
5.101Corrected ³⁶Ar Total Relative Abundance, relative_abundance_36arNumberCorrected ³⁶Ar total relative abundance
Recommended
Description:Corrected ³⁶Ar total relative abundance
Type:Number
Example:0.0000082
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.relative_abundance_36ar
5.102Corrected ³⁶Ar Total Relative Abundance (One Sigma), relative_abundance_36ar_sigmaNumberCorrected ³⁶Ar total relative abundance uncertainty at one sigma
Recommended
Description:Corrected ³⁶Ar total relative abundance uncertainty at one sigma
Type:Number
Example:0.0000121
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.relative_abundance_36ar_sigma
5.103Corrected ³⁷Ar Total Relative Abundance, relative_abundance_37arNumberCorrected ³⁷Ar total relative abundance
Recommended
Description:Corrected ³⁷Ar total relative abundance
Type:Number
Example:0.0000082
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.relative_abundance_37ar
5.104Corrected ³⁷Ar Total Relative Abundance (One Sigma), relative_abundance_37ar_sigmaNumberCorrected ³⁷Ar total relative abundance uncertainty at one sigma
Recommended
Description:Corrected ³⁷Ar total relative abundance uncertainty at one sigma
Type:Number
Example:0.0000121
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.relative_abundance_37ar_sigma
5.105Corrected ³⁸Ar Total Relative Abundance, relative_abundance_38arNumberCorrected ³⁸Ar total relative abundance
Recommended
Description:Corrected ³⁸Ar total relative abundance
Type:Number
Example:0.0000082
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.relative_abundance_38ar
5.106Corrected ³⁸Ar Total Relative Abundance (One Sigma), relative_abundance_38ar_sigmaNumberCorrected ³⁸Ar total relative abundance uncertainty at one sigma
Recommended
Description:Corrected ³⁸Ar total relative abundance uncertainty at one sigma
Type:Number
Example:0.0000121
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.relative_abundance_38ar_sigma
5.107Corrected ³⁹Ar Total Relative Abundance, relative_abundance_39arNumberCorrected ³⁹Ar total relative abundance
Recommended
Description:Corrected ³⁹Ar total relative abundance
Type:Number
Example:0.0000082
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.relative_abundance_39ar
5.108Corrected ³⁹Ar Total Relative Abundance (One Sigma), relative_abundance_39ar_sigmaNumberCorrected ³⁹Ar total relative abundance uncertainty at one sigma
Recommended
Description:Corrected ³⁹Ar total relative abundance uncertainty at one sigma
Type:Number
Example:0.0000121
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.relative_abundance_39ar_sigma
5.109Corrected ⁴⁰Ar Total Relative Abundance, relative_abundance_40arNumberCorrected ⁴⁰Ar total relative abundance
Recommended
Description:Corrected ⁴⁰Ar total relative abundance
Type:Number
Example:0.0000082
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.relative_abundance_40ar
5.110Corrected ⁴⁰Ar Total Relative Abundance (One Sigma), relative_abundance_40ar_sigmaNumberCorrected ⁴⁰Ar total relative abundance uncertainty at one sigma
Recommended
Description:Corrected ⁴⁰Ar total relative abundance uncertainty at one sigma
Type:Number
Example:0.0000121
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.relative_abundance_40ar_sigma
5.111Relative Abundance Unit, relative_abundance_unitStringType of unit used for the relative abundance measurement
Recommended
Description:Type of unit used for the relative abundance measurement
Type:String
Examples:nA
fA

mV

counts/sec
Validation:
Recommended
The values in this column are recommended not to be empty.
1.0 Column:measurements.relative_abundance_unit