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Es gibt viele doppele Bezeichnungen (z.B. Hercynicum/Varisticum),
During the middle portion of Carboniferous time, the northward movement of Gondwanaland caused that continent to collide with Eurasia. The mountains thus formed in southern Europe are known collectively as the Hercynides, and the orogeny as a whole is known as the Hercynian (or Variscan). Hercynian mountains also formed in northwestern Africa. In North America the Hercynian orogeny, known here as the Alleghenian, in effect continued where the Caledonian orogeny left off, extending the Appalachian mountain chain southwestward and forming the adjacent Ouachita Belt in Oklahoma and Texas.