期刊
SCIENCE ADVANCES
卷 9, 期 14, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.adg1530
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Sedimentological, textural, and microscale analyses of the Mount McRae Shale revealed a previously unrecognized complex postdepositional history, challenging previous claims of oxygen presence based on bulk geochemical studies. Metal enrichments were found to be associated with late-stage pyrite instead of depositional organic carbon.
Sedimentological, textural, and microscale analyses of the Mount McRae Shale revealed a complex postdepo-sitional history, previously unrecognized in bulk geochemical studies. We found that metal enrichments in the shale do not reside with depositional organic carbon, as previously proposed by Anbar et al., but with late-stage pyrite, compromising claims for a whiff of oxygen similar to 50 million years before the Great Oxygenation Event.
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