Time and again, over hundreds of millions of years, environmental disturbances have
caused mass extinctions of animals ranging from reptiles to corals. The anthropogenic loss …

The protracted oxygenation of the ocean-atmosphere system is one of the most fundamental
changes to the Earth system through its history. The uranium isotopic composition (238 …

The Siberian Traps large igneous province (STLIP) is commonly invoked as the primary
driver of global environmental changes that triggered the end-Permian mass extinction …

The terminal Ediacaran Period witnessed the decline of the Ediacara biota (which may have
included many stem-group animals). To test whether oceanic anoxia might have played a …

Piecing together the history of carbon (C) perturbation events throughout Earth's history has
provided key insights into how the Earth system responds to abrupt warming. Previous …

Abstract The Devonian–Carboniferous transition marks a fundamental shift in the surface
environment primarily related to changes in ocean–atmosphere oxidation states,, resulting …

The role of O2 in the evolution of early animals, as represented by some members of the
Ediacara biota, has been heavily debated because current geochemical evidence paints a …

In the Precambrian, reverse weathering—a process consuming oceanic silica, metal cations
and alkalinity to form marine clays—was a key control of the long-term carbon cycle …

The Ediacaran biota were soft-bodied organisms, many with enigmatic phylogenetic
placement and ecology, living in marine environments between 574 and 539 million years …

Uranium isotope variations (δ 238 U) recorded in sedimentary carbonate rocks are a
promising new proxy for the extent of oceanic anoxia through geological time. However, the …