![Glaciology / Proterozoic / Ice ages / Climate history / Extinction events / Marinoan glaciation / Snowball Earth / Cryogenian / Neoproterozoic / Historical geology / Geology / Geologic time scale Glaciology / Proterozoic / Ice ages / Climate history / Extinction events / Marinoan glaciation / Snowball Earth / Cryogenian / Neoproterozoic / Historical geology / Geology / Geologic time scale](https://www.pdfsearch.io/img/a23e06b9e19f01d00785b4426cc8beb9.jpg) Date: 2010-10-27 20:00:48Glaciology Proterozoic Ice ages Climate history Extinction events Marinoan glaciation Snowball Earth Cryogenian Neoproterozoic Historical geology Geology Geologic time scale | | Calibrating the Cryogenian Francis A. Macdonald,1* Mark D. Schmitz,2 James L. Crowley,2 Charles F. Roots,3 David S. Jones,4 Adam C. Maloof,5 Justin V. Strauss,6 Phoebe A. Cohen,1 David T. Johnston,1 Daniel P. Schrag1Add to Reading ListSource URL: www.princeton.eduDownload Document from Source Website File Size: 648,21 KBShare Document on Facebook
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