Question

The diagram shows cross-cutting relationships among rocks.

3 dimensional representation of cross-cutting relationships. Left side, labeled B, C, E, and F. Right side labeled A and D. A: fault line that goes through wavy layers of rock, starting at B, and ending at the bottom of C. B: bottom layer surrounded by wavy layers of rock and ending at C. C: horizontal layer below E. D: rock layer extends from bottom of B to top of E, crossing through wavy rock layer. E: Earth apostrophe s crust. F: fault line that goes through all layers.

Which statement accurately describes the geologic features?

D occurred after B.
D occurred before A.
A formed after the horizontal layer above was deposited.
F formed before the horizontal layer above was deposited.

Answer 1

"D occurred before A."

Explanation: D reaches up to the bottom of B, so B overlies D (B was deposited after D). Fault A starts at/cuts B, so A is younger than B. Therefore D (older than B) must have formed before A.