GEOLOGY LAB: METAMORPHIC QUESTIONS AND CORRECT ANSWERS

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GEOLOGY LAB: METAMORPHIC
QUESTIONS AND CORRECT ANSWERS

Which rock is composed of talc, and therefore can be scratched by your fingernail? - ans-soapstone
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What term do we use for what the rock was BEFORE metamorphism? - ans-parent rock
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Which rock should fizz with HCl acid is applied? - ans-marble
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Metamorphic rocks can have different textures. Those that have a "layered appearance" or alignmen
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t of flat or elongate minerals have which texture? - ans-foliated
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Which texture has undergone the most amount of change during metamorphism? - ans-gneissic
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Which mineral listed suggests the lowest degree of metamorphism? - ans-chlorite
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Which mineral listed suggests the highest degree of metamorphism? - ans-sillimanite
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Which mineral listed suggests the highest degree of metamorphism? - ans-garnet
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Garnet can form at 800˚C. True or false? - ans-true
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Chlorite can form at 100 degrees Celsius, true or false? - ans-true
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Garnet can form at 400˚C. - ans-true ws ws ws ws ws wsws




Which metamorphic facies name is used to describe the conditions of 800˚C and pressures equivale
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nt to a depth of 10 km? - ans-contact metamorphism
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Which rock type forms next (in order of metamorphic grade) after Gneiss? - ans-migmatite
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Which metamorphic facies name is used to describe the conditions of 200˚C and pressures equivale
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nt to a depth of 10 km? - ans-zeolite
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Of these choices, which rock type was formed under the "lowest grade" of metamorphism? - ans-
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slate

Which rock type forms next (in order of metamorphic grade) after Schist? - ans-gneiss
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Which metamorphic facies name is used to describe the conditions of 600˚C and pressures equivale
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nt to a depth of 20 km? - ans-Amphibolite
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Of these listed, which would give the "highest grade" of metamorphism?
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If you are unfamiliar with this terminology, feel free to look it up! - ans-granulite
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Which metamorphic facies name is used to describe the conditions of 400˚C and pressures equivale
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nt to a depth of 40 km? - ans-eclogite
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