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Questions and Answers
What term describes the process of permanent shape change in rocks due to temperature and pressure?
What term describes the process of permanent shape change in rocks due to temperature and pressure?
- Sedimentation
- Metamorphism
- Erosion
- Plastic deformation (correct)
Foliated rocks contain random, interlocking mineral textures.
Foliated rocks contain random, interlocking mineral textures.
False (B)
What type of metamorphism occurs when magma comes in contact with existing rock?
What type of metamorphism occurs when magma comes in contact with existing rock?
Contact metamorphism
The rock that changes during metamorphism is called the ______.
The rock that changes during metamorphism is called the ______.
Match the following metamorphic rocks with their classification:
Match the following metamorphic rocks with their classification:
Flashcards
Metamorphism
Metamorphism
Any process that changes the structure or composition of a rock while it's still solid, often due to changes in temperature, pressure, or the addition of chemical fluids.
Parent Rock
Parent Rock
The original rock that is changed during metamorphism.
Foliated Rocks
Foliated Rocks
Metamorphic rocks with parallel layers of flat and elongated minerals.
Nonfoliated Rocks
Nonfoliated Rocks
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Contact Metamorphism
Contact Metamorphism
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Study Notes
Metamorphism
- Metamorphism is any process that alters a rock's structure and composition in a solid state.
- Factors causing metamorphism include changes in temperature, pressure, and the addition of chemical fluids.
- Rocks form under high temperatures and pressures.
Plastic Deformation
- Plastic deformation is the permanent change in shape a rock undergoes through bending and folding.
- This occurs during tectonic plate collisions, which create mountains.
- The rock that changes during metamorphism is called the parent rock.
Foliated Rocks
- Foliated rocks are metamorphic rocks layered with flat and elongated minerals.
- Examples include gneiss and schist.
Nonfoliated Rocks
- Nonfoliated rocks have mineral grains in a random, interlocking arrangement..
- An example of a nonfoliated rock is marble.
Contact Metamorphism
- Contact metamorphism happens when magma interacts with surrounding rocks.
- The magma's heat and gases transform the surrounding rocks into new metamorphic rocks.
Regional Metamorphism
- Regional metamorphism creates large metamorphic rock bodies, covering hundreds of square kilometers.
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