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Precambrian Eon - Geologic and Biological Evolution 4 Billion Years Ago

GEO GIRL via YouTube

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Overview

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This course surveys the Precambrian from Earth’s formation through the emergence of early life and the end of the Proterozoic. It connects the development of Earth’s crust, oceans, atmosphere, supercontinents, climate, and biological evolution.

Syllabus

What & when was the Precambrian?
Hadean Eon: Earth formation
Layer formation during the Hadean
Atmosphere formation & outgassing during the Hadean
Continental vs. oceanic crust formation during the Hadean
Archean Eon: plate tectonic rate & crustal accretion
Laurentia formation during the Archean
Did life evolve during the Archean?
First photosynthesizing organisms oxygen rise!
Banded iron formations BIFs
Proterozoic Eon: Great Oxidation Event GOE
GOE extinction O2 was toxic!
Ediacaran fauna
Cambrian explosion delay mystery?
Precambrian supercontinents
Snowball Earth Proterozoic ice ages

Taught by

GEO GIRL

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