If a rock is metamorphosed but does not contain foliation or lineation, what has probably happened to the rock?
A) It has not been metamorphosed.
B) It has been deformed but not metamorphosed.
C) It has been metamorphosed but not deformed.
D) It has been flattened and stretched while it was metamorphosed.
E) It was only flattened during metamorphism.

Question

Quizplus · Accepted Answer

Metamorphism refers to the process by which a rock's mineral composition and texture are changed by heat and pressure. The absence of foliation or lineation in a metamorphosed rock suggests that while it underwent metamorphism, it did not experience differential stress that would lead to deformation, such as the development of foliation or lineation.

If a Rock Is Metamorphosed but Does Not Contain Foliation