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  • A Younger Dryas ash bed in western Norway, and its possible correlations with tephra in cores from the Norwegian Sea and the North Atlantic
  • A bed of volcanic ash up to 23 cm thick is found in lacustrine and marine sediments in western Norway. It is formally named the Vedde Ash Bed, and its age is approximately 10,600 yr B.P., i.e., mid-Younger Dryas. The bed consists of pure glass