The oldest layer in this tilted sequence of sedimentary rocks is
A)at the top of the hill in the center of the photograph.
B)the darkest layer.
C)the layers on the lower left part of the photograph.
D)the layers on the right of the photograph.

Question

The oldest layer in this tilted sequence of sedimentary rocks is 
A)at the top of the hill in the center of the photograph. 
B)the darkest layer. 
C)the layers on the lower left part of the photograph. 
D)the layers on the right of the photograph.

Quizplus · Accepted Answer

In a tilted sequence of sedimentary rocks, the oldest rock is usually found at the bottom or lowermost part of the sequence. In the photograph, the layers on the lower left part are tilted at a higher angle than the other layers, indicating that they are older. Therefore, choice C is the best answer.

The Oldest Layer in This Tilted Sequence of Sedimentary Rocks