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40Ar/39Ar Age Determination 13D04878 (IESS10022 - Hector Guyot)
File Name IESS10022.13D04878.pdf
Data Type spreadsheet
Computer Program ArArCALC 2.7.0
File Size 1.21 MB - 4 files [ pdf,xls,age,xml ]
Expert Level State-of-the-art Science
Contributor Susan Schnur
Source http://earthref.org/ERDA/IESS10022/
Description
This upload contains the 40Ar/39Ar geochronology age determination of sample MV1203-D38-02B from Hector Guyot in Walvis Ridge and was calculated using the ArArCALC freeware. The preferred age of 26.43 ± 0.01 Ma is the age plateau and is interpreted as the eruption age of the sample. Slanting downwards but age probably acceptable. The age determination was carried out on a sample of basalt (groundmass) 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 (sanidine) with an age of 28.201 ± 0.082 Ma. This sample was collected by Anthony Koppers (akoppers@ceoas.oregonstate.edu). Sample Description: Standard. Sample Treatment: Aphanitic, avesicular basalt. Fresh GM, Moderately ol-cpx-plag-phryic..
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