At what depth does low-grade metamorphism begin?
A) 1 to 2 km
B) 6 to 10 km
C) 20 to 50 km
D) 100 to 200 km
Correct Answer:
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A)a device that measures current
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Q21: Which metamorphic mineral commonly forms porphyroblasts?
A)amphibole
B)calcite
C)chlorite
D)garnet
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