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Detailed File Information
40Ar/39Ar Age Determination 13D03867 (IESS10001 - Esk Guyot)
File Name IESS10001.13D03867.pdf
Data Type spreadsheet
Computer Program ArArCALC 2.7.0
File Size 1.40 MB - 4 files [ pdf,xls,age,xml ]
Expert Level State-of-the-art Science
Contributor Susan Schnur
Source Schnur 2017
http://earthref.org/ERDA/IESS10001/
Description
This upload contains the 40Ar/39Ar geochronology age determination of sample MV1203-D42-17 (DARK) from Esk Guyot in Walvis Ridge and was calculated using the ArArCALC freeware. The preferred age of 9.34 ± 0.00 Ma is the age plateau and is interpreted as the eruption age of the sample. Good, but dirtier than LIGHT fraction so use LIGHT as final age. The age determination was carried out on a sample of trachyte (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@coas.oregonstate.edu). Sample Description: Standard. Sample Treatment: Fine-grained, avesicular basalt. Moderately altered GM, sparsely cpx-plag-phyric..
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