Which of the following scenarios would best indicate that a thrust fault is present at a location?
A)The hanging wall of the fault has slipped down.
B)Two parts of the same rock have been horizontally displaced by 20 feet.
C)Cambrian-aged rocks have been shoved on top of Jurassic-aged rocks.
D)The crust has lengthened, allowing a graben to slip down and create a pull-apart basin.

Question

Quizplus · Accepted Answer

A thrust fault is a type of reverse fault where the angle of the fault plane is less than 45 degrees, resulting in one block of rock being thrust up and over another block. This can cause older rocks to be pushed on top of younger rocks, which is indicated in scenario C. The other options do not necessarily indicate the presence of a thrust fault.

Which of the Following Scenarios Would Best Indicate That a Thrust