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![]() Date: 2006-03-08 12:02:34Glaciology Ice ages Climate history Proterozoic Extinction events Snowball Earth Cryogenian Neoproterozoic Quaternary glaciation Historical geology Geologic time scale Geology | Source URL: cig.museo.unlp.edu.arDownload Document from Source WebsiteFile Size: 3,88 MBShare Document on Facebook |