Sturtian glaciation (jan 1, 717000000 BC – jan 1, 660000000 BC)

Description:

The Sturtian glaciation, also known as the Sturt glaciation, was a worldwide glaciation during the Cryogenian Period when the Earth experienced repeated large-scale glaciations. The Sturtian glaciation is thought to have lasted from c. 717 Ma to c. 660 Ma, a time span of approximately 57 million years. It is hypothesised to have been a Snowball Earth event, or contrastingly multiple regional glaciations, and is the longest and most severe known glacial event preserved in the geologic record after the much earlier Huronian glaciation.

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