In an undisturbed sequence of sedimentary rocks,younger layers overlie older layers,according to the principle of
A) superposition.
B) original continuity.
C) original horizontality.
D) uniformitarianism.

Question

In an undisturbed sequence of sedimentary rocks,younger layers overlie older layers,according to the principle of 
A) superposition. 
B) original continuity. 
C) original horizontality. 
D) uniformitarianism.

Quizplus · Accepted Answer

The principle of superposition states that in an undisturbed sequence of sedimentary rocks, the younger layers will be on top of the older layers. This is due to the fact that as new sediment is deposited, it will accumulate on top of the old sediment, gradually building up the layers over time.

In an Undisturbed Sequence of Sedimentary Rocks,younger Layers Overlie Older