Boring Billion

The Boring Billion, otherwise known as the Barren Billion, the Dullest Time in 's , and 's Middle Ages, is the time period between 1.8 and 0.8 billion years ago (Gya) spanning the middle Proterozoic eon, characterized by more or less tectonic stability, climatic stasis, and slow biological evolution.


It is bordered by two different oxygenation and glacial events, but the Boring Billion itself had very low levels and no of glaciation.

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