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The Age of the Earth
http://geomaps.wr.usgs.gov/parks/gtime/ageofearth.html
From DLESE Community Collection (DCC)
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This web page addresses the question: How do we know the Age of the Earth? by citing radiometric dates from rocks and minerals of the Earth, Moon, and meteorites. The methods of radiometric dating are also discussed. Viewers will find a table of the common radiometric dating isotopes, their daughter elements, and their half-lives. This material was adapted from The Age of the Earth, by the Branch of Isotope Geology, United States Geological Survey, Menlo Park, California.
Intended for grade levels:
  • General public
Type of resource:
  • Text:
    • Ref. material
Subject:
  • Geological Sciences:
    • Geologic time
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Information presented on this website is considered public information and may be distributed or copied. Use of appropriate byline/photo/image credit is requested.
DLESE Catalog ID: DLESE-000-000-000-863
Resource contact / Creator / Publisher:
Publisher: United States Geological Survey, The Western Earth Surface Processes Team


Publisher: United States National Park Service
http://www.nps.gov/

Contact: United States Geological Survey