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Graph of Ice Volume on the Earth
http://www.museum.state.il.us/exhibits/ice_ages/specmap_graph.html
From NASA ED Mall Collection
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This graph shows the general trend of changing ice volume on the Earth over the last 750,000 years. The extent of ice is estimated using changes in the amount of different isotopes of oxygen found in planktonic foraminifera which occur as fossils.
Intended for grade levels:
  • High (9-12)
  • College (13-14)
Type of resource:
  • Visual:
    • Illustration - scientific
Subject:
  • Cryology
  • Geological Sciences:
    • Paleontology
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Copyright and other restrictions information are unknown.
DLESE Catalog ID: NASA-Edmall-474
Resource contact / Creator / Publisher:
Contributor: The Illinois State Museum
http://www.museum.state.il.us/