The Rock and Fossil Record
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6 terms
Terms | Definitions |
|---|---|
 Uniformitarianism | A principle that states that the same geologic processes shaping the Earth today have been at work throughtout Earth's history |
| Catastrophism | A principle that states all geologic change suddenly occurs |
| Relative Dating | Determining whether an object or event is older or younger than other objects or events |
| Superposition | A principle that states that younger rocks lie above older rocks in undisturbed sequences |
| Geologic Column | An ideal sequence of rock layers that contains all the known fossils and rock formations on Earth arranged from oldest to youngest |
| Unconformity | A surface that represents a missing part of the geologic column |
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