Abstract The Ordovician-Silurian transition (OST) hosted profound and frequent changes in
the atmospheric-terrestrial-oceanic-climatic system (ATOCS). Previous studies have found …

The release of phosphorous (P) via chemical weathering is a vital process that regulates the
global cycling of numerous key elements and shapes the size of the Earth's biosphere. It has …

The Cryogenian period of the Neoproterozoic was marked by two Snowball Earth
glaciations that bookended a non-glacial interval that lasted roughly 10 million years. The …

The end-Permian mass extinction (EPME) has been linked with the widespread
development of oxygen-poor oceanic conditions. However, information on the spatial extent …

The biggest known mass extinction in the history of animal life occurred at the Permian–
Triassic boundary and has often been linked to global warming. Previous studies have …

Large-scale volcanism has played a critical role in the long-term habitability of Earth.
Contrary to widely held belief, volcanism, rather than impactors, has had the greatest …

The geochemistry of nitrogen (N) in ancient lacustrine systems, especially in alkaline
conditions, is poorly understood. To fill the knowledge gap, we investigated alkaline …

Char and polycyclic aromatic hydrocarbons (PAHs), which can serve as proxies for wildfire
frequency and/or intensity, are widely present in Permian-Triassic boundary (PTB) strata …

The shutdown of carbonate productivity and its replacement by black shale deposition is
often observed in the geological record and yet the factors driving such a change are …

The ultimate cause (s) of the end-Permian mass extinction (∼ 252 Ma ago) has been
disputed. A complex interplay of various effects, rather than a single, universal killing …