Mineral Resources On-Line Spatial Data

National-scale geochemical analysis of stream sediments and soils in the US, from existing data, reanalysis of existing samples, and new sampling. Goal for sample density is one per 289 square km.

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Continental US	Alaska

Show in Google Earth or download KML:

• KMZ, compressed, 2.2M bytes

Show in your GIS using OGC WMS:

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

Download:

Download data for geographic areas you choose

Get the entire data set

• Shapefile with a subset of 53 attributes: ICP40, As, Se, Hg (74,409 samples, 5.2MB .ZIP package)
• dBase file with all 287 attributes (77,212 records, 19.6MB .ZIP package)

Documentation:

National Geochemical Survey - Full documentation

Complete report on the web including summaries of component datasets used to compile this resource, maps showing county-by- county average concentration of elements, and comprehensive explanations of the analytical methods.

Metadata:

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

About the database fields

• All database fields, by category
• Database field categories
• Frequently asked questions (FAQ)

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U.S. Department of the Interior | U.S. Geological Survey
URL: http://tin.er.usgs.gov/geochem/index.shtml
Page Contact Information: Peter Schweitzer
Page Last Modified: Monday, 26-Oct-2009 14:57:52 EDT