click below
click below
Normal Size Small Size show me how
Geology 2
Terms - Metamorphic Rocks
| Term | Description |
|---|---|
| metamorphic rocks | form from the addition of heat and/or pressure on preexisting rock inside the earth |
| regional metamorphism | caused by forces acting over a large area; associated with mountain building |
| contact metamorphism | occurs at the interface between hot magma and preexisting rock; preexisting rock is changed as a result of being in contact with the hot magma |
| rock cycle | igneous, sedimentary, and metamorphic rocks forming from one another |
| foliation | conditions of high pressure and temperature cause a rearrangement or recrystallization of minerals; banding |
| static pressure | pressure that is the same in all directions; increases with depth of burial |
| sheer stress | directed pressure associated with great earth movements; causes change in form and orientation of minerals |