When a Billion Years Disappeared

In some places, the rocks below the Great Unconformity are about 1.2 billion years older than those above it. This missing chapter in Earths history might be linked to a fracturing supercontinent, out-of-control glaciers, and maybe the diversification of life itself.

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References: https://docs.google.com/document/d/1aVE7-Vt8yaMVvcAee5V9IOvmMjgxgb6SkMToDMJqQ7E/edit?usp=sharing