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Directory > Science > Earth Sciences > Geology and Geophysics > Geologic Time


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  • Geologic Time: The Story of a Changing Earth [*]
    Learn about the characteristics that define each eon, how the Earth's crust and atmosphere were formed, what the Earth's physical processes are, and how a rock's age is determined.
    www.nmnh.si.edu/paleo/geotime
  • Web Geological Time Machine [*]
    Introduction to geology and geologic time periods. Information on recoginzing eras in time, from the Vendian to the Holocene.
    www.ucmp.berkeley.edu/help/timeform.html
  • Geologic Time
    Online version of a U.S. Geological Survey publication.
    pubs.usgs.gov/gip/geotime
  • Earth Sciences Explorer: Geologic Time
    Learn about the many exciting things that happened during the different time segments.
    www.cotf.edu/ete/modules/msese/earthsysflr/geotime.html
  • Geologic Ages of Earth History
    Table denotes when dinosaurs existed, and may be downloaded as an Excel worksheet.
    www.dinosauria.com/dml/history.htm
  • Palaeos: The Trace of Life on Earth
    Dedicated to providing detailed information on the history of life on Earth. Addresses palaeontology, evolution, geochronology, systematics, and ecology.
    www.palaeos.com
  • Tapestry of Time and Terrain: The Union of Two Maps
    USGS composite map of the U.S. land surface and the ages of its underlying rock formations.
    tapestry.usgs.gov
  • Douglas Henderson's Earth History Illustrations
    Gallery of scientific illustrations representing Earth's ancient life, landscapes, dinosaurs, and prehistoric creatures. Includes illustrated geologic timeline.
    gallery.in-tch.com/~earthhistory
  • Geological Evolution of the Earth, The
    Presents in a vertical time line images of the Earth's geologic evolution from 510 million years ago to the present.
    www.handprint.com/PS/GEO/geoevo.html
  • National Geographic: Prehistoric Time Line
    National Geographic's Prehistoric Time Line features geologic time scale, photos, facts, and maps covering Earth's 4.5-billion-year history.
    science.nationalgeographic.com/science/prehistoric-world/prehistoric-time-l...
 



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