Geology – Chapter 8 (Metamorphism) – Mini Test 3 – Flashcards
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Which of the following does NOT help define foliation in metamorphic rocks?
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crystals that grow in a random orientation
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Which of the following does NOT match a sedimentary rock with a possible metamorphic equivalent?
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all of these are correct matches (sandstone-quartzite, limestone-marble, shale-schist, shale-gneiss)
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Which of the following matches a sedimentary rock with a possible metamorphic equivalent?
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shale-slate
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Which of the following rocks cannot be metamorphosed?
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all of these can be metamorphosed (shale, sandstone, limestone, granite)
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What kind of metamorphic rock is formed where rocks have been heated but not deformed?
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a rock with metamorphic minerals but no foliation or lineation
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A nonfoliated metamorphic rock not created by pressure or differential stress, but by being baked by an igneous intrusion, is a:
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hornfels
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If a rock is metamorphosed but does not contain foliation or lineation, what has probably happened to the rock?
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It has been metamorphosed but not deformed.
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Which of the following does NOT cause metamorphism?
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any of these can cause metamorphism (heating by magma, subduction, a change in stress, shearing at depth)
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In what environments does low pressure/high temperature metamorphism occur?
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near magma but at shallow levels
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In what environments does high pressure/low temperature metamorphism occur?
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in a subduction zone or accretionary prism
