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U-Pb analysis of sample 01AD257

Dates

Dataset Reference Date
2020-12-28
Info Date
2001

Summary

analyses were done using the USGS/Stanford sensitive high-resolution ion microprobe-reverse geometry (SHRIMP-RG). The primary oxygen-ion beam opereated at about 8 nA and excavated a pit about 25 micron in diameter and 1 micron deep. The magnet was cycled through the mass statations six times per analysis. Elemental fractionation was corrected by analyzing a zircon every fourth analysis of know age standard.

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Material Request Instructions

For the publication containing sample radiometric age data, see: https://dggs.alaska.gov/pubs/id/13143

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  • ReSciColl Archive

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Additional Information

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Type Scheme Key
title Parent-4f4e49d8e4b07f02db5df185 U-Pb analysis of sample 01AD257

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 USGS document I 2788

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