The third period of the Paleoproterozoic era, spanning 2.05 billion to 1.8 billion years ago. Some of Earth's earliest global scale continent-continent collision belts developed during the Orosirian, building mountain ranges as early continental fragments assembled toward the supercontinent Columbia. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Start (Million Years Ago) End (Million Years Ago) Connections
Anticipated By
Has Geologic Rank
In Discipline
Precursor To
Sources
1. Paleoproterozoic (Wikipedia)
Wikimedia FoundationTable of Paleoproterozoic periodsQuote, Table of Paleoproterozoic periods
earliest global-scale continent-continent collision belts developed
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