Although Ce anomalies are commonly used to reconstruct past seawater redox conditions,
published interpretations are based on various proxy materials and analytical approaches …

Abstract Otavi Group is a 1.5–3.5-km-thick epicontinental marine carbonate succession of
Neoproterozoic age, exposed in an 800-km-long Ediacaran− Cambrian fold belt that rims …

There has been extensive debate about the history of Earth's oxygenation and the role that
land plant evolution played in shaping Earth's ocean–atmosphere system. Here we use the …

The oxygenation of Earth's surface environment dramatically altered key biological and
geochemical cycles and ultimately ushered in the rise of an ecologically diverse biosphere …

Metal and metal isotope records in carbonates have the potential to provide novel insights
into ancient ocean–atmosphere redox conditions, paleoenvironmental conditions, and …

Rare earth element and yttrium (REY) concentrations of carbonates can be used as potential
proxies to trace the geochemistry of precipitating waters and physico-chemical …

Abstract The mid-Proterozoic (1.8–0.8 Ga) witnessed the first appearance but unusually low
diversification of eukaryotes. The stagnant biotic evolution during this billion-year-long …

Carbonate minerals have precipitated from seawater for at least the last 3.8 billion years, but
changes in the physical and chemical properties of carbonate rocks demonstrate that the …

A growing number of detailed geochemical studies of Ediacaran (635–541 Ma) marine
successions have provided snapshots into the redox environments that played host to the …

Measurements of triple oxygen isotope ratios in barite horizons within post-Marinoan cap
carbonates have provided some of the most compelling evidence that the Marinoan …