The idea of uniformitarianism suggests that
A)the natural laws that operate today are different than those that have operated in the past.
B)sediments are laid down layer upon layer with younger layers always on the top.
C)the processes and natural laws that operate today have been valid throughout geologic time.
D)all rocks layers are originally uniform.

Question

Quizplus · Accepted Answer

Uniformitarianism suggests that the processes and natural laws that operate today have been valid throughout geologic time, therefore the answer is C. A is incorrect because uniformitarianism assumes that the same natural laws have operated throughout time. B is incorrect because while it may be generally true that sediments are laid down layer upon layer with younger layers on top, this is not a defining principle of uniformitarianism. D is incorrect because not all rocks layers are originally uniform, and this is not a central concept of uniformitarianism.

The Idea of Uniformitarianism Suggests That