Relative Dating

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Erosion

Relative Dating can tell you

In some rock formations, layers or parts of layers may be missing. This is often due to erosion. Erosion by water or wind removes sediment from exposed surfaces. Erosion often leaves a new flat surface with some of the original material missing

Any feature that cuts across rock layers is younger than the layers

The oldest rocks are usually found on the

Sedimentary layers or lava flows extend sideways in all directions until they thin out or reach a barrier.

In undisturbed rock layers, the oldest layer is at the bottom and the youngest layer is at the top.

Any part of a previous rock layer, like a piece of stone, is older than the layer containing it.