Closed notes – Earth’s history ppt

rock to cut through rock ________, the rock ________ around it must have ________ before  the ________ rock could cut through it.

Extrusion vs. Intrusion

Types of Unconformities

Relative dating v Absolute Dating

Fossils

Not original remains, impressions or traces

Ice Cores

Tree Rings

Geologic Time Scale

Important Events in Earth’s Past

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