The formation mechanisms of sedimentary pyrite nodules determined by trace element and sulfur isotope microanalysis
Gregory, Daniel; Mukherjee, Indrani; Olson, Stephanie L; Large, Ross Raymond; Danyushevsky, Leonid V.; Stepanov, Aleksandr S; Nunes Avila, Janaina; Cliff, John; Ireland, Trevor; Raiswell, Robert; Olin, Paul H; Maslennikov, Valeriy V; Lyons, Timothy W
Redox sensitive trace elements in pyrite, including nodules, are increasingly used to infer the chemical conditions of ancient oceans—but considerable uncertainty remains regarding the mechanism and timing of nodule formation. Resolving these uncertainties is important because pyrite nodules must form in connection with the overlying water column, rather than during late diagenesis, to reflect the composition of the global ocean. Existing models for pyrite nodule formation have been specific to...[Show more]
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