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Segeberger Kalkberg : ウィキペディア英語版 | Segeberger Kalkberg
The Kalkberg (lit. "chalk mountain") is a 91-metre-high rock in the center of Bad Segeberg. The name is a misnomer as it is not made of limestone (calcium carbonate), but from gypsum (calcium sulfate). ==Geology== The gypsum was formed as sulfate evaporite sediments, which were deposited about 250 million years ago by the Zechstein Sea. Smaller disturbances in the more recent epochs of earth history allowed the less dense Zechstein salts to flow together and force their way upwards from a great depth into the younger overlying rocks to a level near that of the present-day surface. Under the Kalkberg is a salt dome, which rises by one to two millimeters a year. The red cliffs of Heligoland or the Münsterdorfer Geestinsel are limestone, one of the few formations in Schleswig-Holstein which was not created by the ice ages. The mining of the salt dome ended in 1860. From the salt dome comes the brine feeding the saltwater bath that give Bad Segeberg its name.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Segeberger Kalkberg」の詳細全文を読む
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