Supercontinents and superglaciers

A week of tweets, from the Archaean Eon to the first great Ice Age

Sunday, February 1. 2.420 – 2.288 Bya

Saturday, January 31. 2.560 – 2.420 Bya

Friday, January 30. 2.708 – 2.560 Bya

Thursday, January 29. 2.864 – 2.708 Bya

Wednesday, January 28. 3.300 – 2.864 Bya

Tuesday, January 27. 3.205 – 3.300 Bya

Monday, January 26. 3.390 – 3.205 Bya

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