GENERAL GEOLOGY

Detailed explanation-1: -This is called confining stress. Compression squeezes rocks together, causing rocks to fold or fracture (break) (figure 1).

Detailed explanation-2: -Compressional stress is when a rock is pressed together into itself, like when crust movements cause two rocks to squeeze another one between them. Another example is when mountains are formed at a convergent boundary, like the Rocky Mountains.

Detailed explanation-3: -Compression (squashing) occurs as tectonic plates are pushed together and the crust becomes shorter and thicker, building mountain ranges like the Alps or Himalayas. The rocks are folded and metamorphosed at depth. They may be faulted nearer the surface.