Geology
Alsace is the part of the plain of the Rhine located at the west of the Rhine, on its left bank. It is a rift or graben, from the Oligocene epoch, associated with its horsts: the Vosges and the Black Forest.
The Jura Mountains, formed by slip (induced by the alpine uplift) of the Mesozoic cover on the Triassic formations, goes through the area of Belfort.
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