Contact metamorphic rocks are typically not foliated because
A)the parent rock does not contain the correct type of minerals to produce foliation.
B)contact metamorphism occurs from heat and not from deformation due to stress.
C)contact metamorphism does not produce minerals,such as the micas,which are needed for foliation to occur.

Question

Quizplus · Accepted Answer

Contact metamorphism occurs from heat and not from deformation due to stress, so there is no directed pressure to cause foliation.

Contact Metamorphic Rocks Are Typically Not Foliated Because