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Looking Closer

This collection contains a wide variety of resources and information about Dating the Past, which supports the resources in the other collections.

  • Fission track and luminescence dating – Article

    Fission track dating is used mainly to date the formation of volcanic crystals and glass. Luminescence dating measures how long certain crystals have been buried in sediments.

  • Fossil compasses – Article

    The Earth’s magnetic field has changed direction many times. Evidence for these changes is found in some rocks and can be dated using radiometric methods.

  • The rock cycle – Article

    The rock cycle is a network of processes that make and change rocks. The three main rock types (igneous, sedimentary and metamorphic) can be changed into any of the others.