Excavations for Copenhagen Metro dig up evidence of interglacial period
Work on the new Metro station revealed traces of a hitherto unknown interglacial period in Denmark, science media Videnskab.dk writes based on research published in the journal Boreas.
An interglacial is a warmer period such as the one we are currently living in, which falls between two ice ages.
The Copenhagen Metro find is remarkable due to its location, according to Ole Bennike, a geologist with the Geological Survey of Denmark and Greenland (GEUS).
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In the cliff at Trelde, Professor Emeritus Bent Vad Odgaard found in 2013 an unprecedented intermediate period in Denmark [Credit: Bent Vad Odgaard] |
Global climate has varied between ice ages and interglacials for millions of years. The current interglacial began around 11,700 years ago.
Researchers have previously found evidence of four interglacial periods in Denmark, with the new find representing the fifth.
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Aerial view of the Copenhagen Metro construction site [Credit: Copenhagen Metro] |
“Our ability to date [sediment] layers is becoming better and better. New methods are being developed with which to date these layers,” he said.
Source: The Local [February 01, 2019]
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