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40Ar/39Ar analysis of sample BLC30-512.5

Dates

Dataset Reference Date
2020-12-28
Info Date
1996

Summary

Gases were extrcted from each sample by heating in a double-vacuum resistance furnace in 50C to 100C increments from 500C to total fusion (about 1,350C). The isotopic abundance of 40Ar, 39Ar, 38Ar, 37Ar, and 36Ar was measured for each extraction step using a MAP215 rare-gas mass spectrometer.

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Material Request Instructions

For the publication containing sample radiometric age data, see: https://dggs.alaska.gov/pubs/id/17413

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  • ReSciColl Archive

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Type Scheme Key
title Parent-4f4e49d8e4b07f02db5df185 40Ar/39Ar analysis of sample BLC30-512.5

NGGDPP Item Extension

alternateGeometryThe coordinates are represented in North American Datum of 1927 (NAD27). Location was derived from the following method(s): Location digitized from figure 2 in Ford, R.C., 1996

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