Which law describes a layer of

the Grand Canyon that is
older than the layer above it?
law of superposition
law of inclusion
law of crosscutting
law of
uniformitarianism

1 answer

The law that describes a layer of the Grand Canyon (or any sedimentary layers) that is older than the layer above it is the law of superposition. This geological principle states that in an undeformed sequence of sedimentary rocks, younger layers are deposited on top of older layers.