After examining rock samples from a particular outcrop, a geologist concludes that the rocks formed at an ancient subduction zone. The presence of which metamorphic facies best supports this conclusion

Question

Geography

Jazmyn Francis

8 November, 12:40

After examining rock samples from a particular outcrop, a geologist concludes that the rocks formed at an ancient subduction zone. The presence of which metamorphic facies best supports this conclusion

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Answers (2)

Know the Answer?

Mitchell Mccarty · Answer 1

Answer: Blueschist

Explanation:

A blueschist is a metamorphic rock that is formed under high pressure and low temperature. Texturally, it is medium-grained, non-foliated to medium-foliated. It is formed by the metamorphism of basalt and rocks if similar compositions. Its a rock that contains glauphaine.

Bits · Answer 2

Blueschist

Explanation:

Blueschists are formed in association with subduction and continental collision and reflect burial to high pressures at relatively low temperatures.

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