History of Earthさんのイラストまとめ

4.38 billion years ago: Oldest known terrestrial material is a Zircon crystal found in the Jack Hills, Australia 💎
Isotopic signatures preserved in this crystals suggest that -at least temporally- liquid water existed on the still steaming hot Earth🌚💦
https://t.co/GGGHuRsHoQ

4.51-4.98 billion years ago: Earth rapidly cools down. Differentation of the planet's interior in a silicate mantle & iron-nickel core continues. As surface temperatures fall below 1000° a thin crust forms. Degassing causes an early atmosphere of water vapor & carbon-dioxide🌑

~75 million years ago: by the late Cretaceous, the continents were beginning to drift apart and to assume their broad modern alignment 🌍
https://t.co/hhskJF69b3

~500 million years ago: in a relative short time of 20 million years many organisms with hard outer shells evolve, some bizarre, like Anomalocaris, some today common fossils, like trilobites
https://t.co/z8rc1ExIUa

1,6 billion years ago: the Paleoproterozoic ends & the Mesoproterozoic begins. This 600 million years long era is characterized by the breakup of Columbia, the formation of the Rodinia supercontinent & the evolution of sexual reproduction & true multicellular organisms 🌋🦠

4.4-4.38 billion years ago: isotopic oxygen signatures preserved in the oldest known zircon crystals suggest that - at least temporally - liquid water existed on the still steaming hot Earth

~4.5 billion years ago: Over the next 100 million years (almost a week in our calendar) Earth cools down. A first stable crust of monotonous dark peridotite & basalt rocks forms. Degassing of the mantle starts to form a dense & toxic carbon-dioxide/water vapor atmosphere 🌑