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Detailed File Information
40Ar/39Ar Age Determination 07C1136 (KOP000056 - Bayonnaise, Samoa)
File Name KOP000056.07C1136.pdf
Data Type spreadsheet
Computer Program ArArCALC 2.5.1
File Size 1.11 MB - 4 files [ pdf,xls,age,xml ]
Expert Level State-of-the-art Science
Contributor Anthony A.P. Koppers
Source Koppers et al. 2011
http://earthref.org/erda/KOP000056
Description
This upload contains the 40Ar/39Ar geochronology age determination of sample BAY-1 3E7-06 (ALIA 124-11) from Bayonnaise, Samoa and was calculated using the ArArCALC freeware. The preferred age of 12.92 ± 0.05 Ma is the age plateau and is interpreted as the eruption age of the sample. A good age plateau that is concordant with the inverse and normal isochron ages and also the (recombined) total fusion age. The age determination was carried out on a sample of basalt (groundmass 210-300µm) in an incremental heating experiment and using the bulk laser heating extraction method. The analyses were run on a MAP215-50 mass spectrometer and the ages were calculated relative to flux monitor FCT-3 (biotite) with an age of 28.030 ± 0.010 Ma. This sample was collected by Stan Hart (shart@whoi.edu).
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