Snowball Earth (Cryogenian glaciations)
Tierra bola de nieve (glaciaciones del Criogénico)
- Date
- c. 717–635 Ma · confidence medium
- Place
- Ghaub Formation (Otavi Group), Otavi Mountainland, Namibia
- Credited to
- Natural event
- Field
- Cosmos & Earth
What was discovered
Two glaciations, the Sturtian and the Marinoan, cover almost the whole planet in ice down to the equator; glacial deposits in Namibia capped by tropical carbonates were the key evidence.
Planetary event (F5), verified against sources on 25-09-2026.
What it led to
- Ediacaran biota