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THE PRIMORDIAL EARTH Hadean and Archean Eons Evidence of Anoxia

THE PRIMORDIAL EARTH Hadean and Archean Eons Evidence of Anoxia. Lack of oxidized iron in the oldest sedimentary rocks. Urananite and pyrite are readily oxidized today, but are found unoxidized in Precambrian sediments Archean sedimentary rocks are commonly dark due to

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THE PRIMORDIAL EARTH Hadean and Archean Eons Evidence of Anoxia