Question

What are the types of unconformities that can occur in rock layers?

Answer 1

The answer is D. All of the above.. I just took the test (:

Answer 2

The correct answer is all of the above.

An uncomformity can be defined as the contact source between two rocks in which the upper unit is younger than the lower unit is older. For example: 400 million year old sandstone was deposited on the 600 million year old sediment. There are three types of unconformities : disconformities, angular and nonconformities.