Units A, B, and C are sedimentary rocks; unit A is the oldest and unit C is the youngest. The sedimentary rocks are cut by a fault, indicated by the bold line. The fault dips 60° to the northwest as shown by the strike and dip symbol.

-What type of fault is depicted on the geologic map?

Question

Units A, B, and C are sedimentary rocks; unit A is the oldest and unit C is the youngest. The sedimentary rocks are cut by a fault, indicated by the bold line. The fault dips 60° to the northwest as shown by the strike and dip symbol.
 
-What type of fault is depicted on the geologic map?

Quizplus · Accepted Answer

The fault dips to the northwest, which indicates a reverse fault. Unit C is the youngest, which means it has been pushed up and over unit A and unit B, supporting the identification of a reverse fault.

Units A, B, and C Are Sedimentary Rocks; Unit a Is