Taphonomists believe that the Olduvai bone and stone-tool sites were not deposited by moving water because
A) the bones do not contain characteristic water markings.
B) the sediments surrounding the bones do not contain water markings.
C) the sediments surrounding the bones are inverted, so that the top layers are oldest.
D) the sediments surrounding the bones and tools are not graded by size and weight.

Question

Quizplus · Accepted Answer

The lack of size and weight grading in the sediments suggests that they were not sorted by water movement, which typically sorts materials by size and weight.

Taphonomists Believe That the Olduvai Bone and Stone-Tool Sites Were