π Node [[geologic timeline]]
β³ π Resource @s5bug/geologic timeline
Geologic Timeline
-
[[Hadean]]: 4.571 BYA to 4.0 BYA
- Named due to hellish conditions
-
[[Archaean]]: 4.0 BYA to 2.5 BYA
- Reasonably condusive to life
- Pretty certain that cellular life originated here
- 3.48 BYA: First cellular life, [[Stromatolites]]
- 3 BYA: Oxygenic photosynthesis defines the end of the Archaean
-
[[Proterozoic]]: 2.5 BYA to 541 MYA
- 2.8 BYA to 1.9 BYA: Banded Iron Formations imply periods of high
oxygenation
- CHβ (Methane) + 2Oβ β COβ + 2HβO: Methane concentration decreased, while
Oxygen and COβ increased
- [[Huronian Glaciation]]
- [[Ediacaran]]
-
[[Phanerozoic]]: 541 MYA to Present
Rendering context...