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dc.contributor.authorGoldberg, T.
dc.contributor.authorMazumdar, A.
dc.contributor.authorStrauss, H.
dc.contributor.authorShields, G.
dc.date.accessioned2006-11-14T11:45:47Z
dc.date.available2006-11-14T11:45:47Z
dc.date.issued2006
dc.identifier.citationOrganic Geochemistry, vol.37, 1278-1288p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/491
dc.description.abstractPyrite bearing barite concretions are abundant in black shales of the Early Cambrian Niutitang formation in China. Their occurrence is connected with low sedimentation rates. Sulphur and oxygen isotopic compositions of barite display highly enriched values, averaging in 68±5‰ and 20±1‰, respectively. Pyrite sulphur has an isotopic composition of ~10‰. The elevated isotopic compositions, no systematic difference in isotopic composition throughout the concretions, and presumably low sulphate concentrations during deposition indicate late diagenetic barite precipitation at an advanced stage of bacterial sulphate reduction. During concentric growth from concretion centre to margin different Ba+ and SO4 2- bearing fluids interacted at different times, which resulted in non uniformly spread d34S and d18O values throughout the concretions.
dc.format.extent1668147 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherElsevier
dc.rightsAn edited version of this paper was published by Elsevier. Copyright [2006] Elsevier
dc.subjectSulphur isotope
dc.subjectoxygen isotopic
dc.titleInsights from stable S and O isotopes into biogeochemical processes and genesis of Lower Cambrian barite–pyrite concretions of South China
dc.typeJournal Article


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