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Stevns Klint : ウィキペディア英語版
Stevns Klint

Stevns Klint is a white chalk cliff located some southeast of Store Heddinge on the Danish island of Zealand. Stretching along the coast, it is of geological importance as one of the best exposed Cretaceous-Tertiary (K/T) boundaries in the world. Subject to frequent erosion, the cliff rises to a height of up to .
==Geology==
The cliff reveals sections from the uppermost part of the Maastrichtian stage (72 to 66 million years ago) and from the lowermost part of the Danian stage (66 to 62 million years ago). A black layer of fish clay, a few centimeters thick, containing iridium clearly marks the Cretaceous-Paleogene boundary.〔 The layers can also be seen deep in the tunnels of Stevnsfortet, a cold-war fortress constructed in 1953. The bryozoa chalk in the cliff is highly shock resistant to both conventional and nuclear weapons.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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