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6-3 flashcards
Metamorphism
Term | Definition |
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Metamorphism | When something has been metamorphosed, this means that they have been changed. The word metamorphism is derived from the Greek word Meta, meaning change, and Morph'e, meaning form. During metamorphism, a rock changes form while remaining solid. |
Solid State Alterations | The mineral in a rock changes into new minerals that are stable under the new temperature and pressure conditions. |
Foliated Rocks | Layers and bands of minerals characterize foliated metamorphic rock. |
Non-Foliated Rocks | Non-foliated metamorphic rocks are composed mainly of minerals that form with blocky crystal shapes. |
Regional Metamorphism | When high temperature and pressure affect large regions of Earth's crust, they produce large belts of Regional Metamorphism. |
Contact Metamorphism | When molten material, such as that in an igneous intrusion, comes in contact with a solid rock, a local effect called Contact Metamorphism happens. |
Hydrothermal Metamorphism | When very hot water reacts with rock and alters into chemical and mineral composition, hydrothermal metamorphism occurs. |
Rock Cycle | The continuous changing and remarking of rocks is called the rock cycle. |