The Upper Rhine Plain, Rhine Rift Valley or Upper Rhine Graben is a major rift, about 350-kilometre-long and on average 50-kilometre-wide, between Basel in the south and the cities of Frankfurt/Wiesba
Schematic cross-section of the Rhine Rift Valley
The Upper Rhine Plain, view from west to east. Front: a vineyard near Neustadt an der Weinstraße, background: Mannheim (right: Mannheim Power Station, far north: the Odenwald
A graben in geology is a depressed block of the crust of a planet or moon, bordered by parallel normal faults.
Upper Rhine Plain
…extensional) structures in the foreland basin to the north of the Alps. The result was substantial crustal thinning, forming a major extensional graben and causing isolated volcanic activity. The stretch factor is estimated to be ~2. To both the east and west of the Rhine Plain, two major hill ranges…
The Newark Basin, an early Mesozoic half-graben
Rima Ariadaeus on the Moon is thought to be a graben. The lack of erosion on the Moon makes its structure with two parallel faults and the sunken block in between particularly obvious.