Skip to main content

Rb-Sr analysis of sample R83-Ml-O8

Dates

Dataset Reference Date
2020-12-28
Info Date
1989

Summary

Rb-Sr concentrations were determined by replicate analyses of pressed powder pellets using X-rays fluorescence. U.S. Geological Survey rock standards were used for calibration; mass-absorption coefficients were obtained from Mo K-alpha Compton scattering measurements. Sr isotopic composition was measured on unspiked samples prepared using standard ion exchange techniques. All measurements were made on a Vacujm-Generators Isomass 54R mass spectrometer automated with a Hewlett-Packard HP-85 computer. Measured ratios were normalized to a 86Sr/88Sr ratio of 0.1194 so that the standard gives a 87Sr/86Sr raatio of 0.71020 +/- 0.00002.

Attached Files

Material Request Instructions

For the publication containing sample radiometric age data, see: https://dggs.alaska.gov/pubs/id/17501

Map

Communities

  • ReSciColl Archive

Tags

Categories
Other

Provenance

Data source
File Processing
File Process

Additional Information

Identifiers

Type Scheme Key
title Parent-4f4e49d8e4b07f02db5df185 Rb-Sr analysis of sample R83-Ml-O8

NGGDPP Item Extension

alternateGeometryThe coordinates are represented in North American Datum of 1927 (NAD27). Location was derived from the following method(s): Location provided in Roeske, S.M., et al., 1989, GSA Bulletin, v. 101, p. 1036

Item Actions

View Item as ...

Save Item as ...

View Item...