Question

Is an erosional surface cut into plutonic or metamorphic rocks that is overlain by sedimentary rocks?

Answer 1

Nonconformity is an erosional surface cut into plutonic or metamorphic rocks that is overlain by sedimentary rocks.

An erosional surface that has been carved into plutonic or metamorphic rocks and is covered by sedimentary rocks is known as a nonconformity. Any of a family of rocks formed by the alteration of preexisting rocks in reaction to changing environmental circumstances such as temperature, pressure, and mechanical stress, as well as the addition or deletion of chemical components.

It is possible for the preexisting rocks to be igneous, sedimentary, or another type of metamorphic rock. Metamorphism is derived from the Greek term for "changing of form"; metamorphic rocks are generated from igneous or sedimentary rocks that have changed form (recrystallized) due to changes in their physical environment.

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