Skip to main content

K-Ar analysis of sample 88CNu057

Dates

Dataset Reference Date
2020-12-28
Info Date
1988

Summary

Replicate potassium was measured using LiBO2 flux fusion and flame phtometry with a lithium internal standard. Mineral standards were used to calibrate the photometer. Argon isotopes were measured by isotope dilution on a computerized, 6-in.-radius mass spectrometer. Modifications of analytical techniques are; (1) Reducing air-argon contamination from the extraction system by replacing quartz-lined, air cooled fusion bottles with water-cooled, unlined bottles. (2) Boiling whole-rock samples (crushed to 16-48 mesh) for 1 hr. in distilled water immediately before loading them in the extraction system. (3) Argon from one sample fusion is split into two to four aliquits that are sequentially analyzed on the mass spectrometer. The first [...]

Attached Files

Material Request Instructions

For the publication containing sample radiometric age data, see: https://dggs.alaska.gov/pubs/id/2480

Map

Communities

  • ReSciColl Archive

Tags

Categories
Other

Provenance

Data source
File Processing
File Process

Additional Information

Identifiers

Type Scheme Key
title Parent-4f4e49d8e4b07f02db5df185 K-Ar analysis of sample 88CNu057

NGGDPP Item Extension

alternateGeometryThe coordinates are represented in North American Datum of 1927 (NAD27). Location was derived from the following method(s): Digitized from figure 5 in RI 92-1

Item Actions

View Item as ...

Save Item as ...

View Item...