Ages from the National Geochronological Database

Added By Infochimps
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.

Additional facts from

Dataset Summary

  • Date Released: 1995
  • Date Updated: 1995
  • Time Period: data obtained through 1995
  • Data Category Type: Raw Data Catalog
  • Frequency: none planned
  • Specialized Data Category Designation: Research

Contributing Agency Information

Miscellaneous Facts


Public Domain (Government Work)

This dataset was prepared by the government and is therefore in the public domain. There are no restrictions upon its use.