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First-principles calibration of 38Ar tracers :implications for the ages of 40Ar/39Ar fluence monitors

Professional Paper 1621

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Abstract

We describe the analytical procedure for first-principles calibrations of 38Ar tracers in the U.S. Geological Survey (USGS) Laboratory in Menlo Park, California. The ages of fluence monitors determined in the USGS laboratory and those reported in the literature differ by nearly 2 percent. However, the radiogenic-40Ar content of the primary mineral standard on which these ages are based has never been verified by first-principles measurement in other laboratories.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
First-principles calibration of 38Ar tracers :implications for the ages of 40Ar/39Ar fluence monitors
Series title:
Professional Paper
Series number:
1621
Edition:
-
Year Published:
2000
Language:
ENGLISH
Publisher:
U.S. Dept. of the Interior, U.S. Geological Survey,
Description:
10 p.