In a sequence of undisturbed sedimentary rocks, the oldest fossils will be ____.
A) in the top rock layer
B) in the middle rock layer
C) in the bottom rock layer
D) unable to be determined
E) indistinguishable from the other fossils

Question

Quizplus · Accepted Answer

In an undisturbed sequence of sedimentary rocks, the oldest rocks will be found at the bottom of the sequence and the youngest rocks will be found at the top. This is known as the law of superposition. Therefore, the oldest fossils will be found in the bottom rock layer.

In a Sequence of Undisturbed Sedimentary Rocks, the Oldest Fossils