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Geologic Change
Term | Definition |
---|---|
Uniformitarianism | A principle that states that geologic processes that occurred in the past can be explained by current geologic processes. |
Fossil | The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock. |
Trace Fossil | A fossilized structure, such as a footprint or a coprolite, that formed in sedimentary rock by animal activity on or within soft sediment. |
Climate | The weather conditions in an area over a long period of time. |
Ice Core | A long cylinder of ice obtained from drilling through ice caps or ice sheets; used to study past climates. |