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6.3 flash cards
Term | Definition |
---|---|
metamorphism | to change |
Solid state alterations | the minerals in a rock that change into new minerals that are stable under the new temperature |
Foliated rocks | Layers and bands of minerals |
non-foliated rocks | composed mainly of minerals that form with blocky crystal change |
regional metamorphism | When high temperature and pressure affect large regions of Earth's crust. |
contact metamorphism | When molten material, such as that in an igneous intrusion, comes in contact with solid rock, a local effect |
hydrothermal metamorphism | When very hot water reacts with rock and alters its chemical and mineral composition. |
rock cycle | Metamorphic rocks form when other rocks change. |