This ramp could be either in the lower crustal blocks, or where the thrust sheet has split and one part is being forced over the next.

Within the Belt, a number of crustal blocks or microplates which have been sheared off the adjoining major plates are undergoing massive deformation.

This belt has younger potassic granites and is believed to separate two distinct crustal blocks of Archaean age.

This scenario then permits rapid transport north of crustal blocks such as the Yakutat terrane.

Relatively little rock deformation such as faulting and folding has affected this high, thick crustal block within the last 600 million years or so.

Thrust faults in Colorado are thought to have formed from a slight clockwise movement of the region, which acted as a rigid crustal block.

If there is an oceanic free face, the adjacent crustal blocks may move towards it.

The faults bound down-dropped crustal blocks forming structures called graben.

The largest of these fault blocks are called crustal blocks.

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