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What & when was the Precambrian?
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Precambrian Eon - Geologic and Biological Evolution 4 Billion Years Ago
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- 1 What & when was the Precambrian?
- 2 Hadean Eon: Earth formation
- 3 Layer formation during the Hadean
- 4 Atmosphere formation & outgassing during the Hadean
- 5 Continental vs. oceanic crust formation during the Hadean
- 6 Archean Eon: plate tectonic rate & crustal accretion
- 7 Laurentia formation during the Archean
- 8 Did life evolve during the Archean?
- 9 First photosynthesizing organisms oxygen rise!
- 10 Banded iron formations BIFs
- 11 Proterozoic Eon: Great Oxidation Event GOE
- 12 GOE extinction O2 was toxic!
- 13 Ediacaran fauna
- 14 Cambrian explosion delay mystery?
- 15 Precambrian supercontinents
- 16 Snowball Earth Proterozoic ice ages
