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 …

Abstract The Cryogenian Period spans two major glaciations, the Sturtian Ice Age (~ 720–
660 Ma) and the Marinoan Ice Age (~ 650–635 Ma), the termination of each of which was …

The termination of the Cryogenian period marks a transition from an extreme ice-to a
greenhouse climate, likely initiated by increased atmospheric CO 2, however uncertainties …

The snowball Earth hypothesis predicts that continental chemical weathering diminished
substantially during, but rebounded strongly after, the Marinoan ice age some 635 Mya …

Calcium is an essential element in the biogeochemical cycles that regulate the long-term
climate state of Earth. The removal of CO 2 from the ocean-atmosphere system is controlled …

Understanding the origin and evolution of life on Earth and potentially other planets in our
solar system is of fundamental interest for humanity. For the longest time in Earth's history …

Current cap carbonate formation models invoke a number of different alkalinity sources for
the Neoproterozoic deglacial ocean (eg, weathering alkalinity, hydrothermal alkalinity …

Several studies have exploited the stable calcium (Ca) and strontium (Sr) isotope
compositions of marine carbonate rocks to investigate ancient carbon cycle dynamics …

We report high-resolution, high-precision δ 44/40 Ca, δ 88/86 Sr, and 87 Sr/86 Sr records
spanning the Permian-Triassic boundary (PTB) from the Meishan and Dajiang carbonate …

Abstract The Ediacaran Shuram excursion marks one of the largest carbon isotope
excursions in Earth's history, but its origin remains enigmatic. In this study, we examine a …