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

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

Quizplus · Accepted Answer

The principle of original continuity states that rock layers originally extended laterally in all directions until they thinned out at the edge of a basin or interfingered with another sediment type. Therefore, if two bodies of rock on opposite sides of a canyon have the same lithology and fossil content, they were likely connected at one time and formed part of a continuous layer of rock, which is known as original continuity.

If the Lithology and Fossil Content of Two Bodies of Rock