Before revision: The rumps of the former mountain ranges may be found in many lowland regions of the earth 's crust (where they form the so-called basement rocks) and especially outcrop in Central Europe through more recent tectonics.
After revision: The rumps of the former mountain ranges may be found in many lowland regions of the Earth 's crust (where they form the so-called basement rocks) and especially outcrop in Central Europe through more recent tectonics.