Term
What does the name “metamorphic” mean, and what is the definition of a metamorphic rock?
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Definition
| "changed shape" defined as a rock that has undergone chemical and/or physical changes int eh solid state |
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Term
| What are the two main types (scales) of metamorphism? |
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Definition
small scale - contact large scale - regoinal metamorphism |
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Term
What are the processes that make an igneous or sedimentary rock turn into a metamorphic rock?
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Definition
| heat - pressure - chemical reaction with hot fluids |
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Term
| Know the three ways that a rock can physically change in the solid state during metamorphosis. |
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Definition
reorientations of rod or plate shape minerals recrystallization of minerals resulting in less but larger grains creation of new materials |
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Term
| Know the two main types of metamorphic rock textures. |
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Definition
foliated: rod or plate shaped minerals have lined up so that one direction has a dominant frabic sturcture non-foliated - minerals have no dimension larger or shorter than any other sturcture fabric pattern appears |
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Term
| What are the names of foliated rocks that have: microscopic, small (almost to barely visible), and large (visible) mica grains, and what is the name of the foliated rock with a dark/light banded pattern? |
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Definition
slate - microsopic minerals phyllite - almost visible schist - large enough to see gneiss - mafic and felsic minerals make dark and light bands |
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Term
| What is the name of a non-foliated metamorphic rock that effervesces in Hydrochloric Acid (HCl)? |
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Definition
| marble reacts with HCL no scratch on glass |
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Term
| What is the name of a non-foliated metamorphic rock that can scratch glass? |
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Definition
| quartzite - scratch glass but no reaction |
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Term
| What is the general term for contact metamorphic rocks? |
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Definition
| contact metamorphic hornfels - burned to an altered state |
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Term
| How does “shocked quartz” get created on Earth? |
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Definition
| shocked quartz comes from impact of meteors |
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