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GEOLOGIC TIME SCALE. DIVISIONS OF TIME  Eon: (years) longest period of time  Era: (months) second largest division of time made up of 2 or more periods.

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Presentation on theme: "GEOLOGIC TIME SCALE. DIVISIONS OF TIME  Eon: (years) longest period of time  Era: (months) second largest division of time made up of 2 or more periods."— Presentation transcript:

1 GEOLOGIC TIME SCALE

2 DIVISIONS OF TIME  Eon: (years) longest period of time  Era: (months) second largest division of time made up of 2 or more periods.  Period: (weeks) third division of time.  Epoch: (days) smallest division of time.

3 EVENTS OF GEOLOGIC TIME  Precambrian- Boiling rock, 2 continents, single celled life  Cenozoic-Pangea forms, Explosion of Marine life, Life moves to land, Reptiles, Amphibians and Insects Appeared.  Mesozoic-Pangea breaks apart,Age of the dinosaurs, Pines Trees and Ferns  Paleozoic-Present day Earth, Age of Mammals

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