Type:

Other

Description:

This lesson discusses the clear evidence of geological events over many millions of years. Students count the number of varves (annual layers of sediment) in shale billets, taken from the Green River Formation in Wyoming. The count is then extended to reflect the entire 260 meters of sediments where the billets originated, a period of approximately 2 million years. This provides a tangible experience for a sense of time, from both a human perspective (vast period) and a geological perspective (very short period).

Subjects:

    Education Levels:

    • Grade 1
    • Grade 2
    • Grade 3
    • Grade 4
    • Grade 5
    • Grade 6
    • Grade 7
    • Grade 8
    • Grade 9
    • Grade 10

    Keywords:

    Space Science,Geologic time,Middle School,NSDL,Chemistry,Geology,NSDL_SetSpec_dlese.org,High School,Space sciences,Physical sciences,oai:nsdl.org:2200/20061003230149030T,Physics,Geoscience,Astronomy,Earth science

    Language:

    English

    Access Privileges:

    Public - Available to anyone

    License Deed:

    Creative Commons Attribution Non-Commercial Share Alike

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