The earliest Ice Ages

  • Exhibition Text

    • This 2.3-billion-year-old outcrop of the Bruce formation contains evidence of a very early Ice Age. It formed at the far end of a river delta.

      AMNH collection

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  • For Educators

    • Topic: Earth Science

      Subtopic: Geologic Time

      Keywords: Geology, Stratigraphic--Precambrian, Glacial epoch, Paleoclimatology

      Audience: General