Laws of Geologic History

Comp Sci 6.3

5 cards·by amerinee

Rock were deposited horizontally

Law of Original Horizontality

In any undisturbed sequence of strata, states younger rocks are on top, and older layers at the bottom.

Law of Superposition

states Rock layers do not just end - they gradually weed out

Law of Lateral Continuity

Any feature that cuts across a body of sediment or rock is younger than the body of sediment or rock that it cuts across.

The Cross-Cutting Law

If one rock contains fragments or another rock body it must be younger than fragments of rock it contains

Law of Inclusions