Units A, B, C, D, and F are sedimentary rocks. Unit E is an igneous rock.

-When did the faulting occur?

Question

Units A, B, C, D, and F are sedimentary rocks. Unit E is an igneous rock.
 
-When did the faulting occur?

Quizplus · Accepted Answer

We know that unit E is an igneous rock, which means it must have been intruded after the deposition of units A, B, C, and D. The faulting must have occurred after the deposition of unit C because we can see that unit C is offset by the fault. The fault must have occurred before the deposition of unit B because unit B is deposited on top of the fault plane without any offset. Therefore, the faulting occurred after deposition of unit C and before deposition of unit B.

Units A, B, C, D, and F Are Sedimentary Rocks