The study of rocks and rock formations
A method of putting events in the order in which they happened.
The remains or traces of a dead animal or plant that has been preserved for a long time.
A scientist who studies and identifies fossils.
A record of the geologic events and life forms in Earth's history.
A method of measuring the exact age of an object in years.
a principle that states that younger rocks lie above older rocks if the layers have not been disturbed
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.
An igneous rock layer formed when magma hardens beneath Earth's surface.
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