Question

JWhat principal involves an intrusive rock body younger than the rock into which it intrudes?


the principle of relative dating


the principle of cross-cutting relationships


the principle of uniformitarianism


the principle of original horizontality

Answer 1

The principle that involves an intrusive rock body being younger than the rock into which it intrudes is known as **the principle of cross-cutting relationships**. This principle states that geological features, such as faults or igneous intrusions, that cut through other rocks are younger than the rocks they disrupt.