After the Hadean Era
Green Oceans
A Pale Orange Dot
4.5 BYA the Earth formed, hot and inhospitable until 3.8 BYA when the Archaean Era began.
Mid-Archaean oceans were full of iron in the form of Fe2+, an ion with a green hue.
Early Archaean Earth likely appeared Hazy and orange-tinted due to an excess of atmospheric methane
+ info
+ info
+ info
Archaean Era
"Origin" of life on Earth, approx. 3.8-2.5 BYA
From orange to green, to purple, to deep rusty red, the Earth of the Archaean era underwent several dramatic changes in color and composition as the earliest forms of life pumped out oxygen and carved out an environment capable of supporting more complex life.
Bacterial Stromatolites
Great Oxygenation Event
Purple Earth Hypothesis
Matted fossilized remains show how chlorophyll-containing cyanobacteria ramped up the oxygenation of Earth.
Archaea & Bacterial photo- synthesizers release free oxygen & change the chemical landscape.
Early photosynthetics may have used retinal to absorb abundant green-spectrum light, reflecting purple.
+ info
+ info
+ info
The Archaean Eon by L Cohen
Lynne Cohen
Created on June 18, 2023
Start designing with a free template
Discover more than 1500 professional designs like these:
View
Akihabara Connectors Infographic
View
Essential Infographic
View
Practical Infographic
View
Akihabara Infographic
View
The Power of Roadmap
View
Artificial Intelligence in Corporate Environments
View
Interactive QR Code Generator
Explore all templates
Transcript
After the Hadean Era
Green Oceans
A Pale Orange Dot
4.5 BYA the Earth formed, hot and inhospitable until 3.8 BYA when the Archaean Era began.
Mid-Archaean oceans were full of iron in the form of Fe2+, an ion with a green hue.
Early Archaean Earth likely appeared Hazy and orange-tinted due to an excess of atmospheric methane
+ info
+ info
+ info
Archaean Era
"Origin" of life on Earth, approx. 3.8-2.5 BYA
From orange to green, to purple, to deep rusty red, the Earth of the Archaean era underwent several dramatic changes in color and composition as the earliest forms of life pumped out oxygen and carved out an environment capable of supporting more complex life.
Bacterial Stromatolites
Great Oxygenation Event
Purple Earth Hypothesis
Matted fossilized remains show how chlorophyll-containing cyanobacteria ramped up the oxygenation of Earth.
Archaea & Bacterial photo- synthesizers release free oxygen & change the chemical landscape.
Early photosynthetics may have used retinal to absorb abundant green-spectrum light, reflecting purple.
+ info
+ info
+ info