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Geological Time Scale
http://www.geo.ucalgary.ca/~macrae/timescale/timescale.html
From DLESE Community Collection (DCC)
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This information about geologic time and the geologic time scale defines the terms relative time (chronostratic) and absolute time (chronometric). Relative time can be thought of as the physical subdivisions of rock found in the Earth's stratigraphy and absolute as the measurements taken upon those to determine the actual time that has expired. Absolute time measurements can be used to calibrate the relative time scale, producing an integrated geologic or geochronologic time scale. A feature of this site is the multicolor time scale and the site also contains references for more information.
Intended for grade levels:
  • Intermediate (3-5)
  • Middle (6-8)
  • High (9-12)
  • College (13-14)
Type of resource:
  • Visual:
    • Illustration - scientific
  • Text:
    • Ref. material
Subject:
  • Geological Sciences:
    • Geologic time
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Copyright 1996. This file may be freely used for non-commercial purposes provided its original source is indicated. Please contact the author for other arrangements.
DLESE Catalog ID: DLESE-000-000-005-429
Educational standards:
  • National Science Education Standards (NSES):
    • K-4:
      • Unifying concepts and processes:
        • Change, constancy, and measurement
        • Evidence, models, and explanation
      • F - Science in personal / social perspectives:
        • Types of resources
    • 5-8:
      • Unifying concepts and processes:
        • Change, constancy, and measurement
        • Evidence, models, and explanation
      • D - Earth and space science:
        • Earth's history
    • 9-12:
      • Unifying concepts and processes:
        • Change, constancy, and measurement
        • Evidence, models, and explanation
      • D - Earth and space science:
        • Origin and evolution of the earth system
Resource contact / Creator / Publisher:
Publisher: Geology and Geophysics, The University of Calgary