2025 Fall GEOL 1601 for Amy Luther (Shell 6) Course Materials & Test Answers | moodle.lsu.edu

What is a protolith?

The hardest rock in the crust

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The oldest rock in the planet

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What a metamorphic rock was before metamorphism

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Rocks formed from meteorite impact

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What are the two main types of metamorphism?

Intrusive; extrusive

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Primary; secondary

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Physical; chemical

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Contact; regional

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How do metamorphic rocks form?

When pre-existing rocks are altered by heat and pressure

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From volcanic explosions

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From melting magma

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From weathering and erosion

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