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Study Science

dat stoof

Fault Makes rock layers shift up or down.
Extrusion A hardened layer of lava on the surface.
Unconformity The surface where new rock layers meet a much older rocksurface beneath them.
Relative Age The age of rock compared with other rocks.
Law of Superposition The way to determine relative ages of rocks.
Intrusion A hardened layer of magma under the earth's crust.
Absolute age The number of years since a rock has formed.
Index fossil Fossils that helps geologists match rocks.
Created by: electro.dynamix