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12 Cards in this Set

  • Front
  • Back

What are the 4 eons in the gts?

1. Hadean


2. Archean


3. Proterozoic


4. Phanerozoic

What are the eras under Phanerozoic Eon?

1. Paleozoic Era


2. Mesozoic Era


3. Cenozoic Era

What are the PERIODS under the Paleozoic ERA?

1. Cambrian Period


2. Ordovician Period


3. Silurian Period


4. Devonian Period


5. Carboniferous Period


6. Permian Period

What are the PERIODS under Mesozoic Era?

1. Triassic Period


2. Jurassic Period


3. Cretaceous Period

What are the PERIODS under Cenozoic?

1. Paleogene Period


2. Neogene Period


3. Quaternary Period

What is the largest unit in the GTS?

EON

What is the smallest unit in GTS

Epoch

10-100 million years

ERA

Not more than 100 million years

Period

What are the geologic and Biological Events during the Hadean Eon?

- Meteorite Bombardment


- Severe magmatism and volcanic eruptions


- NO LIFE

What are the geological and biological events during the Archean Eon?

- formation of islands


- existence of stromatolites (cyanobacteria/ blue green algae)

What are the geological and biological events during the Proterozoic Eon?

- atmosphere with O2


- snowball earth