Template:Orosirian graphical timeline

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Events of the Orosirian Period
−2050 —
−2000 —
−1950 —
−1900 —
−1850 —
−1800 —
Paleoproterozoic
 
Beginning of the Boring Billion
Supercontinent Columbia forms
Sudbury Basin structure created by asteroid impact?
Vredefort impact structure created by asteroid impact
Events of the Orosirian Period
Vertical axis scale: Millions of years ago