Keywords

#orosirian

Orosirian

Third period of the Paleoproterozoic Era

The Orosirian Period is the third geologic period in the Paleoproterozoic Era and lasted from 2050 Mya to 1800 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically.

Fri 12th

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Orosirian Paleoproterozoic Vredefort impact structure Supercontinent Timeline of natural history Permian Banded iron formation List of time periods Jurassic Triassic
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