If the lithology and fossil content of two bodies of rock on opposite sides of a canyon are identical,then these remaining outcrops were likely physically connected at one time and formed part of an extensive,sheet-like layer of rock.This idea summarizes the principle of ____________.
A) superposition
B) original continuity
C) original horizontality
D) uniformitarianism

Question

Quizplus · Accepted Answer

The principle of original continuity states that rock layers that are cut by a canyon or other erosional feature were originally continuous and connected. If two bodies of rock on opposite sides of a canyon have identical lithology and fossil content, it suggests that they were once part of the same continuous layer, supporting the principle of original continuity. Superposition refers to the idea that the oldest layers are on the bottom and the youngest on the top, original horizontality says that sedimentary rocks are deposited horizontally, and uniformitarianism refers to the idea that geological processes have been consistent throughout Earth's history. None of these principles directly apply to the scenario described in the question.

If the Lithology and Fossil Content of Two Bodies of Rock