Variscan orogeny
This geologic mountain-building event took place mostly in the Devonian and Carboniferous periods. By then Pangaea was more or less complete. In the Triassic period of the Mesozoic, there was land between Siberia over the North Pole to Antarctica over the South Pole. Later in the Mesozoic, the opening of the Atlantic split Pangea. The various parts of the huge mountain belts ended up widely apart on the modern globe.