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Mineral Resources On-Line Spatial Data

Mineral Resources > Online Spatial Data > K/Ar ages of materials in the US

Potassium-Argon ages of materials

A subset of the National Geochronological Database as of 1995. Shows the distribution of published K/Ar and Ar/Ar age determinations in the US.

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URL: http://mrdata.usgs.gov/geochronology/karage.html
Page Contact Information: Peter Schweitzer
Page Last Modified: Friday, 16-Oct-2009 14:42:09 EDT