Archaean eon - PowerPoint PPT Presentation

Anorthosite

Anorthosite. 3 rd March Lin Qiu. Mineralogy. Phaneritic, intrusive igneous rock

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The Origin and Early Evolution of Life

The Origin and Early Evolution of Life. Lecture 19. The Big Bang. 12-15 (13.8) billion years ago all matter was compressed into a space the size of? Our Galaxy Our Solar System Our Plant Our Atom Sudden instantaneous distribution of matter and energy throughout the known universe.

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Geologic Timescale

Geologic Timescale. Archaean Eon. 4.6-2.5 billion years ago ( bya ) Earth’s origin 3.7 bya : First protobionts 3.5 bya : First Prokaryotes 2.5 bya : atmospheric Oxygen increases. Proterozoic Eon. 2.5 bya to 542 mya 2.2 bya : first Eukaryotes

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