which proces actson rock to form fault-block motains

Question

shear tension compresion

 

Answer 1

Fault Block Mountains are formed by Normal Faults. The Footwall block that moves up relative to the Hanging wall block is what ultimately forms the high topography. We know that normal faults form from tension or pull apart forces. 

There is a nice diagram illustrating fault block mountains and the relationship to normal faults on this webpage: http://www.universetoday.com/29823/fault-block-mountains/

Answer 2

Compression between two landmasses causes them to converge.  This results in an uplift of the land, forming mountains.