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Rb-Sr analysis of sample 76AR195

Dates

Dataset Reference Date
2020-12-28
Info Date
1976

Summary

Rb and Sr concentrations were measured by isotope dilution and X-ray fluorescence for samples of the McKinley sequence or the Mesozoic flysch, respectively. The isotopic composition of Sr in all flysch samples and most rocks from the McKinley sequence was measured on unspiked aliquants of powdered rocks. For granitic rocks with high Rb/Sr ratios the Sr isotopic composition was measured on a spiked aliquant of powder. Mass analysis of Sr whas done on an automated 23-cm-radius, stygmatic-focusing, 90 degree-sector, double-collector spectrometer utilizing a double-filament source.

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Material Request Instructions

For the publication containing sample radiometric age data, see: https://dggs.alaska.gov/pubs/id/17457

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  • ReSciColl Archive

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Type Scheme Key
title Parent-4f4e49d8e4b07f02db5df185 Rb-Sr analysis of sample 76AR195

NGGDPP Item Extension

alternateGeometryThe coordinates are represented in North American Datum of 1927 (NAD27). Location was derived from the following method(s): Provided by source document

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