Banded Iron Formations precipitated from the oceans as a result of rising atmospheric oxygen over 3 billion years ago.

Name: Banded Iron Formations precipitated from the oceans as a result of rising atmospheric oxygen over 3 billion years ago.
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Banded Iron Formations (BIFs) primarily formed between 3.8 and 1.8 billion years ago, with the peak formation around 2.5 to 1.8 billion years ago, during the Great Oxidation Event when atmospheric oxygen levels rose significantly.

Banded Iron Formations Precipitated from the Oceans as a Result