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4.6-2.5 billion yrs ago. very hot, limited crust, greenstone formation, oxygen free atmoshphere, ...

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4.6-2.5 billion yrs ago. very hot, limited crust, greenstone formation, oxygen free atmoshphere, ...

4.6-2.5 billion yrs ago. very hot, limited crust, greenstone formation, oxygen free atmoshphere, first felsic crust → Acadia

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