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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 |