notes:history
Differences
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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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notes:history [2026/06/11 02:55] 5.162.100.144 old revision restored (2026/06/05 01:44) |
notes:history [2026/06/13 11:54] (current) 114.119.145.205 old revision restored (2008/11/18 00:58) |
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| * Proterozoic Eon : 2.5 bya - 550 mya | * Proterozoic Eon : 2.5 bya - 550 mya | ||
| * 2.4 bya - oxygen becomes significant component of the atmosphere | * 2.4 bya - oxygen becomes significant component of the atmosphere | ||
| + | * 1.8 - 1.5 bya - Columbia Supercontinent | ||
| * 1 bya - 800 mya - Rodinia supercontinent exists | * 1 bya - 800 mya - Rodinia supercontinent exists | ||
| * 770 - 750 mya - first ice age | * 770 - 750 mya - first ice age | ||
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