Question

According to the principle of cross-cutting relationships, if an igneous intrusion cuts across a layer of schist, the igneous intrusion is _______ than the schist. A. younger than B. the same geologic age as C. older than D. more dense than

Answer 1

According to the principle of cross-cutting relationships, if an igneous intrusion cuts across a layer of schist, the igneous intrusion is younger than the schist.

Answer 2

The correct answer is A. younger than. This is all just fancy ways of saying that if you cut open a mountain and look at the rocks, the ones on the top will be younger than the ones on the bottom. That is because of the ways that the rocks formed and the way things were deposited.