Question

What are the types of unconformities than can occur in rock layers

Answer 1

Nonconformities are unconformities that separate igneous or metamorphic rocks from overlying sedimentary rocks. They usually indicate that a long period of erosion occurred prior to deposition of the sediments (several km of erosion necessary). ... A nonconformity at the base of the Grand Canyon succession.

Answer 2

The types of unconformities that can occur in rock layers are: ANGULAR, NONCONFORMITY and DISCONFORMITY.