Marble and Quartzite Are Nonfoliated Metamorphic Rocks Because

Multiple Choice

Marble and quartzite are nonfoliated metamorphic rocks because

A) they are never found beneath fault zones or collisional mountain ranges.
B) both are dominated by minerals that produce equant grains.
C) both are dominated by minerals with crystalline structures that cannot be dissolved.
D) dynamothermal metamorphism can break down the structures of their constituent minerals,but the minerals are unstable in that metamorphic environment.