What may the intensity of regional metamorphism be recognized by?
A) index of recrystallization
B) index fossils
C) index minerals
D) index polymorphs
E) index cards

Question

Quizplus · Accepted Answer

The intensity of regional metamorphism can be recognized by the presence and abundance of certain minerals that are indicative of different metamorphic grades. These minerals are known as index minerals, and their presence can give clues about the temperature and pressure conditions that the rock has undergone during metamorphism.

What May the Intensity of Regional Metamorphism Be Recognized By