Water plays a critical role in erosion and sediment transport and this relationship is most
evident in the hyperarid Atacama Desert of Northern Chile, a region characterized by …

Chromium offers a redox sensitive isotopic proxy with potential for tracing past oxygen levels
in the oceans. We explore this potential in a pelagic succession of marine carbonate …

Oceanic anoxic events (OAEs) are large-scale events of oxygen depletion in the deep ocean
that happened during pre-Cenozoic periods of extreme warmth. Here, to assess the role of …

Abstract The Toarcian Oceanic Anoxic Event (T‐OAE,∼ 183 Myr) was a long‐lasting
episode of ocean deoxygenation during the Early Jurassic. The event is related to a period …

The major biogeochemical cycles that keep the present-day Earth habitable are linked by a
network of feedbacks, which has led to a broadly stable chemical composition of the oceans …

As climate change continues, the likelihood of passing critical thresholds or tipping points
increases. Hence, there is a need to advance the science for detecting such thresholds. In …

Planetary boundaries (PBs) and global catastrophic risk (GCR) have emerged in recent
years as important paradigms for understanding and addressing global threats to humanity …

A δ 238 U record of changing ocean anoxia during OAE 2 is reconstructed using seawater
derived U in pelagic marine sediments in the Portland# 1 core in the south-central region of …

Oceanic Anoxic Event 2 (OAE2) has been the focus of considerable research, but
biogeochemical dynamics during the recovery from the carbon cycle disturbance largely …

Abstract The Cenomanian-Turonian boundary oceanic anoxic event (OAE-2; Bonarelli
event;∼ 94 Ma)(CTBE) is associated with a species turnover in the marine calcareous …