Mineral Resources On-Line Spatial Data

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. Sample location, rock description, analytical data, age, interpretation, and bibliographic reference are given.

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Show in your GIS using OGC WMS:

http://mrdata.usgs.gov/cgi-bin/mapserv?map=karage.map&request=GetCapabilities&service=WMS&version=1.1.1

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Get the entire data set

karage.zip (1 Mb zipped shapefile expands to 39 Mb)

Documentation:

Metadata:

[Outline] - [Questions & Answers] - [Plain text]

About the database fields

• All database fields, by category
• Database field categories

Source of the database:

National geochronological and natural radioelement data bases (CD-ROM)

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U.S. Department of the Interior | U.S. Geological Survey
URL: http://tin.er.usgs.gov/karage/index.shtml
Page Contact Information: Peter Schweitzer
Page Last Modified: Wednesday, 04-Feb-2009 14:49:39 EST