Fault block

Large crustal blocks broken off from tectonic plates are called terranes.

Continent-sized blocks are called variously microcontinents, continental ribbons, H-blocks, extensional allochthons and outer highs.

[2] Because most stresses relate to the tectonic activity of moving plates, most motion between blocks is horizontal, that is parallel to the Earth's crust by strike-slip faults.

Often the movement of these blocks is accompanied by tilting, due to compaction or stretching of the crust at that point.

An example of a graben is the basin of the Narmada River in India, between the Vindhya and Satpura horsts.