Law of Superposition

Front

What is the Law of Superposition?

Back

The Law of Superposition states that in any undisturbed sequence of rocks, the oldest layers are at the bottom and the youngest layers are at the top.

Front

What does it mean for a rock layer to be 'younger' than another?

Back

A rock layer is considered 'younger' if it was deposited after another layer, meaning it is above that layer in the sequence.

Front

What is the significance of the Kaibab formation in the context of rock layers?

Back

The Kaibab formation is the youngest rock layer in the given examples, indicating it was deposited last.

Front

How can you determine the oldest rock layer in a sequence?

Back

The oldest rock layer is found at the bottom of the sequence, according to the Law of Superposition.

Front

What is an example of a rock layer that is older than the Kaibab formation?

Back

The Zoraster Granite is older than the Kaibab formation.

Front

In a diagram of rock layers, how do you identify the youngest layer?

Back

The youngest layer is the one at the top of the diagram.

Front

What does 'deposition' refer to in geology?

Back

Deposition refers to the process by which sediments are laid down in new locations, forming new rock layers.

Front

If Unit E is older than Unit F, what can be inferred about their deposition?

Back

Unit E was deposited before Unit F.

Front

What happens to rock layers during tilting?

Back

Tilting can change the orientation of rock layers, but it does not affect their relative ages.

Front

What is the relationship between rock layers and geological time?

Back

Rock layers represent different periods in geological time, with their order indicating the sequence of events.