which characteristic is shared by intrusions and faults?\no all are cracks.\no all are igneous rocks.\no all…

Brief Explanations:

Intrusions are igneous rocks that form when magma cools and solidifies beneath the Earth's surface. Faults are fractures in the Earth's crust along which movement has occurred. According to the principle of cross - cutting relationships, both intrusions and faults are younger than the rocks they cut through. Intrusions are not cracks (they are solidified magma bodies), not all are igneous rocks (faults aren't), and they don't always cause gaps in the geologic record.

Answer:

All are younger than surrounding rocks.