The intensity of regional metamorphism may be recognized by:
A) index of recrystallization.
B) index fossils.
C) index minerals.
D) index polymorphs.
E) index cards.

Name: The intensity of regional metamorphism may be recognized by: A) index of recrystallization. B) index fossils. C) index minerals. D) index polymorphs. E) index cards.
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Quizplus · Accepted Answer

Index minerals are used to determine the intensity of regional metamorphism as they form under specific temperature and pressure conditions.

The Intensity of Regional Metamorphism May Be Recognized By