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Thread: Ancient rocks at Isua, greenland discussion

  1. #1
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    Default Ancient rocks at Isua, greenland discussion

    This is a discussion thread for the following file:

    Ancient rocks at Isua, greenland

    This overlay shows the location and geology of the ancient (c.3.81 Gyr) rocks at Isua, western Greenland


  2. #2

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    This is a great overlay. However, the title of 'oldest rocks on Earth' actually goes to the nearby Acasta gneisses (4.03 Ga).

    http://pubs.usgs.gov/gip/geotime/age.html

    Steve the geologist
    [FONT=Garamond]Steve[SIZE=1][COLOR=SlateGray] :neutral:

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