Snowball Earth: Drone mapping and isotopic dating suggest Marinoan glaciation spanned 4 million years - Phys.org

Scientists at the University of California, Berkeley, and Boise State University have found evidence suggesting that the Marinoan glaciation began approximately 639 million years ago and lasted for apScientists at the University of California, Berkeley, and Boise State University have found evidence suggesting that the Marinoan glaciation began approximately 639 million years ago and lasted for a…