 geological_period |
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| 1. | [ noun ] (geology) a unit of geological time during which a system of rocks formed | |
| Synonyms: | period | |
| Examples: | "ganoid fishes swarmed during the earlier geological periods" |
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| Related terms: | geological_time Permian Cretaceous Jurassic ice_age Silurian Carboniferous Pennsylvanian Mississippian Devonian Ordovician Triassic Cambrian Tertiary Quaternary era epoch | |
| Similar spelling: |
geological_era geological_time geological_dating geological_process geological_horizon geological_fault geological_formation geologic_process |
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