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| Detailed File Information |
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Description
This upload contains the 40Ar/39Ar geochronology age determination of sample KM1609-D7-3 (OSU-KM1609-D7-3.AK1) from Ellice Basin in East Pacific Ocean (Ellice Basin, Pacific Ocean) and was calculated using the ArArCALC freeware. The preferred age of 69.80 ± 0.39 Ma is the age plateau and is interpreted as the alteration age of the sample. Alteration age plateau 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 (1A7-21) (sanidine) with an age of 28.201 ± 0.082 Ma. This sample was collected by Paul Wessel (pwessel@hawaii.edu). Sample Description: 1 N HCl, 6 N HCl, 1 N HNO3, 3 N HNO3 each for one hour, plus 5% HF for 5 minutes. Sample Treatment: whole rock. |
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Geological Age Range and Timescale
23.72 - 23.19 Ma |
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Location
6º 11.09' S - 6º 11.09' S 177º 10.71' W - 177º 10.71' W, KM1609-D7-3, 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, 10.58052/OSU-KM1609-D7-3.AK1 (IGSN), 10.58052/OSU-KM1609-D7-3 (Parent IGSN), 21G08429 (Experiment), ELLICE BASIN, DAVIDSON (16-INT-01) (Project), Dredging>Chain Bag (Collection Method), Ship (Platform Type), Individual Sample (Collection Object), Igneous>Volcanic>Mafic (Rock Classification), Phenocryst (Mineral Type), Plagioclase (Mineral Name), 250-300 µm (Grain Size), 10.7 mg (Sample Weight), Abyssal Hills (Feature Type) |
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