The secular trend of seawater strontium isotope ratio (87 Sr/86 Sr) reflects changes in the
relative contributions of continental versus mantle reservoirs to ocean composition, and …

We provide new field observations and isotopic data for key areas of the Central Asian
Orogenic Belt (CAOB), reiterating our previous assessment that no excessive crustal growth …

The rise of complex macroscopic life occurred during the Ediacaran Period, an interval that
witnessed large-scale disturbances to biogeochemical systems. The current Ediacaran …

Geological evidence indicates that grounded ice sheets reached sea level at all latitudes
during two long-lived Cryogenian (58 and≥ 5 My) glaciations. Combined uranium-lead and …

Atmospheric CO 2 levels and global climate are regulated on geological timescales by the
silicate weathering feedback. However, this thermostat has failed multiple times in Earth's …

The diversification of animals during the Cambrian Period is one of the most significant
evolutionary events in Earth's history. However, the sequence of events leading to the origin …

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 …

The Paleoproterozoic Lomagundi–Jatuli Event (LJE) is generally considered the largest, in
both amplitude and duration, positive carbonate C-isotope (δ 13Ccarb) excursion in Earth …

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 …