Geological History

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An igneous rock layer formed when magma hardens beneath Earth's surface.

The remains or traces of a dead animal or plant that has been preserved for a long time.

The study of rocks and rock formations

Principle stating that sedimentary rocks are deposited in horizontal or nearly horizontal layers.

layers of sediment initially extend laterally in all directions until erosion or an earthquake interrupt its pattern.

A scientist who studies and identifies fossils.

A method of putting events in the order in which they happened.

a principle that states that younger rocks lie above older rocks if the layers have not been disturbed