Welcome to the EarthChem Geochemical Resource Library

The EarthChem Geochemical Resource Library is a collection of datasets, tools, and resources relevant to the field of geochemistry contributed by the geochemistry community.

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Latest Contributions

• U and Th data for basalts and andesites: view details
  This is a review of U and Th concentrations in basalts and andesites lavas. The observed concentrations in basalts and andesites range between 0.002 and 400 ppm for U and between 0.005 and 445 ppm for Th, with respective mean of 2.3 and 6.1 ppm. ( last edited: 9/18/08)