During the late Cryogenian–Ediacaran (650–542Ma), the Arabian–Nubian Shield (ANS)
underwent final assembly and accretion to the Saharan Metacraton concurrent with the …

The sulfur biogeochemical cycle integrates the metabolic activity of multiple microbial
pathways (eg, sulfate reduction, disproportionation, and sulfide oxidation) along with abiotic …

Oxygenation of the Earth's surface is increasingly thought to have occurred in two steps. The
first step, which occurred∼ 2,300 million years (Myr) ago, involved a significant increase in …

Because animals require oxygen, an increase in late-Neoproterozoic oxygen concentrations
has been suggested as a stimulus for their evolution. The iron content of deep-sea …

Chemostratigraphy has diverse applications to investigating the rock record, such as
reconstructing paleoenvironments, determining the tectonic setting of sedimentary basins …

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 …

The limited availability and low resolution of biostratigraphic and radiometric data in the
Precambrian necessitate using marine chemostratigraphy to correlate and integrate the …

Abstract The Proterozoic Eon spans Earth's middle age during which many important
transitions occurred. These transitions include the oxygenation of the atmosphere …

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 …

Sulfur cycling is ubiquitous in sedimentary environments, where it mediates organic carbon
remineralization, impacting both local and global redox budgets, and leaving an imprint in …