What did the snowball Earth look like?
Briefly

The discovery of the Tavakaiv sandstones in Colorado suggests they formed under a massive glacial ice sheet during the Sturtian glaciation, offering insights into ancient Earth.
The presence of hematite indicates specific deposit conditions and allows for dating of the sandstones, revealing they formed between 715 million and 660 million years ago.
Hematite's ability to trap uranium and lead allows geologists to date the Tavakaiv sandstones, providing valuable information on the Cryogenian Period's extreme global glaciation.
The Tavakaiv sandstones, by being located in what was once an equatorial region, enhances our understanding of continental experiences during the Snowball Earth phenomenon.
Read at Ars Technica
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