Question

Which feature in a rock layer is older than the rock layer?

Answer 1

Answer: unconformity

Explanation: The surface where new rock layers meet a much older rock surface beneath is an unconformity. An unconformity is a gap in the geologic record.

Answer 2

In a rock layer, the features that are older than the rock layer are the ones that are found beneath it. This is because the rocks that form the lower layers were formed before the rocks that form the upper layers. Therefore, any features, such as fossils or mineral deposits, that are found in the lower layers are older than the rock layer itself.