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6-3 Flash Cards
Metamorphic Rocks
Term | Definition |
---|---|
Metamorphism | A rock changes form while remaining solid. |
Solid state alterations | The minerals in a rock change into new minerals that are stable under the new temperature and pressure conditions. |
Foliated rocks | Layers and bands of minerals characterize this type of metamorphic rock. |
Non-foliated rocks | These metamorphic rocks are composed mainly of minerals that form with block crystal shapes. |
Regional metamorphism | When high temperature and pressure affect large regions of Earth's crust, they produce large belts of this type of metamorphism. |
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, and this type of metamorphism occurs. |
Rock cycle | The continuous changing and remaking of rocks. |