Superposition helps geologists determine the relative ages of rock layers. Superposition also helps geologists determine the relative ages of fossils.

What type of rock is used for relative dating?

sedimentary rocks Superposition: The most basic concept used in relative dating is the law of superposition. Simply stated, each bed in a sequence of sedimentary rocks (or layered volcanic rocks) is younger than the bed below it and older than the bed above it.

How do you use relative layers of rock dating?

Relative Dating Principles 1: Lower strata are older than those lying on top of them. Principle of Superposition: In an otherwise undisturbed sequence of sedimentary strata, or rock layers, the layers on the bottom are the oldest and layers above them are younger.