Working in a complex of horizontal sedimentary rocks and intrusive igneous rocks, which of the following principles might you use to determine relative ages of the rocks?

Question

Quizplus · Accepted Answer

Principles of cross-cutting relations and superposition are directly applicable in determining the relative ages of rocks in such a setting. Cross-cutting relations help identify that the rock which cuts through another is younger, while superposition indicates that in a sequence of undisturbed sedimentary rocks, the oldest layers are at the bottom and the youngest at the top.

Working in a Complex of Horizontal Sedimentary Rocks and Intrusive