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U-Pb analysis of sample 90TM497

Dates

Dataset Reference Date
2020-12-28
Info Date
1990

Summary

Rb & Sr concentrations were determined either by X-ray fluorescence or by isotope-dilution techniques. Concentrations or extreme Rb-Sr ratios were measured by isotpe dilution. Rb-Sr ratios have a precision of + or - 3%. 87Sr/86Sr were measured on a separate unspiked run; normalized to correspond to an 86Sr/88Sr of 0.1194 with a precision of + or - 0.0005

Attached Files

Material Request Instructions

For the publication containing sample radiometric age data, see: https://dggs.alaska.gov/pubs/id/4388

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Communities

  • ReSciColl Archive

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Additional Information

Identifiers

Type Scheme Key
title Parent-4f4e49d8e4b07f02db5df185 U-Pb analysis of sample 90TM497

NGGDPP Item Extension

alternateGeometryThe coordinates are represented in North American Datum of 1927 (NAD27). Location was derived from the following method(s): Digitized figure 2 of reference and error calculate based upon digitizing error and point size

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