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| Detailed File Information |
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Description
This upload contains the 40Ar/39Ar geochronology age determination of sample RR1310-D04-1D from Rurutu Hotspot in Tuvalu (Rurutu Hotspot, Tuvalu) and was calculated using the ArArCALC freeware. The preferred age of 63.67 ± 0.16 Ma is the age plateau and is interpreted as the eruption age of the sample. The spectrum produces a stable plateau between 10 and 55 %39Ar released but drops off slightly there after. The drop off is coupled with an increase in K/Ca likely indicating the opening on small fluid or melt inclusions within the plagioclase. The age determination was carried out on a sample of basalt (plagioclase) in an incremental heating experiment and using the bulk laser heating extraction method. The analyses were run on a ARGUS-VI mass spectrometer and the ages were calculated relative to flux monitor FCT-NM (2A2-14) (sanidine) with an age of 28.201 ± 0.082 Ma. This sample was collected by Anthony Koppers (akoppers@coas.oregonstate.edu). Sample Description: 1x Leach + HF. Sample Treatment: Use this link to download the ArArCALC 40Ar/39Ar age calculation files (in the XLS, XML, PDF, AGE and META formats) and any other digital object related to the RR1310 sample from the EarthRef.org Digital Archive.. Location Description: Logotau, Pacific Plate, Pacific Ocean. |
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Geological Age Range and Timescale
20.38 - 20.17 Ma |
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Location
5º 39.40' S - 5º 39.40' S 175º 39.12' E - 175º 39.12' E, RR1310-D04-1d, Pacific Ocean, Pacific Plate |
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Instructions
This ERDA upload contains four separate 40Ar/39Ar age calculation files generated with ArArCALC. Both the XLS and PDF files are for easy viewing in Microsoft Excel or Adobe Acrobat Reader, whereas the AGE file is readable by the ArArCALC software only and the XML file is generated for the GEOCHRON online database project. For full age calculation functionality it is recommended that you open the AGE file in the ArArCALC software that is available as freeware online at http://earthref.org/ArArCALC ... |
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Keywords
40Ar/39Ar, Geochronology, Radiometric Age Dating, K/Ar, Argon, Mass Spectrometry, ArArCALC, Data Reduction, IEKK1-RR1310-D04-1DPL (IGSN), 14D27452 (Experiment), FRENCH POLYNESIA, RURUTU (13-INT-08) (Project), Dredging>Chain Bag (Collection Method), Ship (Platform Type), Individual Sample (Collection Object), Igneous>Volcanic>Mafic (Rock Classification), Phenocryst (Mineral Type), Plagioclase (Mineral Name), 7.7 mg (Sample Weight), Seamount (Feature Type) |
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