The biogeochemical sulfur cycle of marine sediments
Microbial dissimilatory sulfate reduction to sulfide is a predominant terminal pathway of
organic matter mineralization in the anoxic seabed. Chemical or microbial oxidation of the …
organic matter mineralization in the anoxic seabed. Chemical or microbial oxidation of the …
Rethinking the ancient sulfur cycle
The sulfur biogeochemical cycle integrates the metabolic activity of multiple microbial
pathways (eg, sulfate reduction, disproportionation, and sulfide oxidation) along with abiotic …
pathways (eg, sulfate reduction, disproportionation, and sulfide oxidation) along with abiotic …
Deglacial volcanism and reoxygenation in the aftermath of the Sturtian Snowball Earth
M Li, Y Xu, L Sun, J Chen, K Zhang, D Li… - Science …, 2023 - science.org
The Cryogenian Sturtian and Marinoan Snowball Earth glaciations bracket a nonglacial
interval during which Demosponge and green-algal biomarkers first appear. To understand …
interval during which Demosponge and green-algal biomarkers first appear. To understand …
Sulfate was a trace constituent of Archean seawater
In the low-oxygen Archean world (> 2400 million years ago), seawater sulfate
concentrations were much lower than today, yet open questions frustrate the translation of …
concentrations were much lower than today, yet open questions frustrate the translation of …
Reconstruction of secular variation in seawater sulfate concentrations
Long-term secular variation in seawater sulfate concentrations ([SO 4 2−] SW) is of interest
owing to its relationship to the oxygenation history of Earth's surface environment. In this …
owing to its relationship to the oxygenation history of Earth's surface environment. In this …
Intracellular metabolite levels shape sulfur isotope fractionation during microbial sulfate respiration
We present a quantitative model for sulfur isotope fractionation accompanying bacterial and
archaeal dissimilatory sulfate respiration. By incorporating independently available …
archaeal dissimilatory sulfate respiration. By incorporating independently available …
Claypool continued: Extending the isotopic record of sedimentary sulfate
Abstract The Proterozoic Eon spans Earth's middle age during which many important
transitions occurred. These transitions include the oxygenation of the atmosphere …
transitions occurred. These transitions include the oxygenation of the atmosphere …
Pyrite sulfur isotopes reveal glacial− interglacial environmental changes
The sulfur biogeochemical cycle plays a key role in regulating Earth's surface redox through
diverse abiotic and biological reactions that have distinctive stable isotopic fractionations. As …
diverse abiotic and biological reactions that have distinctive stable isotopic fractionations. As …
Patterns of sulfur isotope fractionation during microbial sulfate reduction
Studies of microbial sulfate reduction have suggested that the magnitude of sulfur isotope
fractionation varies with sulfate concentration. Small apparent sulfur isotope fractionations …
fractionation varies with sulfate concentration. Small apparent sulfur isotope fractionations …
Dynamics of pyrite formation and organic matter sulfurization in organic-rich carbonate sediments
Organic-rich carbonate sediments are deposited in a range of environments today and in the
geologic past. A significant part of organic matter (OM) degradation in such sediments often …
geologic past. A significant part of organic matter (OM) degradation in such sediments often …