Metamorphic Rocks

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What is metamorphic rock?

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Metamorphic rock is a type of rock that has been changed from its original form due to heat, pressure, or chemically active fluids.

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What causes regional metamorphism?

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Regional metamorphism is caused by high pressure and temperature conditions, typically found deep within the Earth's crust.

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What is the process of metamorphism?

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Metamorphism is the process by which existing rocks are transformed into metamorphic rocks through heat, pressure, and chemical processes.

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What is an example of a metamorphic rock?

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Gneiss is an example of a metamorphic rock that forms from granite.

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What are the two main types of metamorphism?

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The two main types of metamorphism are regional metamorphism and contact metamorphism.

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What is contact metamorphism?

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Contact metamorphism occurs when rocks are heated by nearby molten magma or lava.

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What is the role of heat in metamorphism?

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Heat increases the temperature of rocks, causing minerals to recrystallize and change their structure.

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What is the role of pressure in metamorphism?

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Pressure compresses rocks, which can lead to the formation of new minerals and changes in texture.

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Can you identify the original rock of a metamorphic rock?

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Yes, it is often possible to identify the original rock type (parent rock) of a metamorphic rock.

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What is foliation in metamorphic rocks?

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Foliation is the alignment of mineral grains in a metamorphic rock, giving it a layered appearance.