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Intervals
Macrostrat
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Orosirian
270
Type
Period
Age range
2050–1800
Ma
International Timescale
also
International Periods
Proterozoic
Paleoproterozoic
Statherian
Orosirian
Rhyacian
2,060
2,040
2,020
2,000
1,980
1,960
1,940
1,920
1,900
1,880
1,860
1,840
1,820
1,800
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