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40Ar/39Ar analysis of sample 99MBW506

Dates

Dataset Reference Date
2020-12-28
Info Date
1999

Summary

The monitors were fused, and samples heated, using a 6 watt argon-ion laser following the technique described in York et al. (1981) and Layer et al. (1987). Argon purification was achieved using a liquid nitrogen cold trap and a SAES Zr-Al getter at 400C. The samples were then analyzed in a VG-3600 mass spectrometer. Argon isotopes measured were corrected for system blank and mass discrimination, as well as calcium, potassiou and chlorine interference reactions following procedures outlined in McDougall and Harrision (1999).

Attached Files

Material Request Instructions

For the publication containing sample radiometric age data, see: https://dggs.alaska.gov/pubs/id/7144

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  • ReSciColl Archive

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Type Scheme Key
title Parent-4f4e49d8e4b07f02db5df185 40Ar/39Ar analysis of sample 99MBW506

NGGDPP Item Extension

alternateGeometryThe coordinates are represented in North American Datum of 1927 (NAD27). Location was derived from the following method(s): Geochemical analysis files

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