Fluctuating oxygenation and dynamic iron cycling in the late Paleoproterozoic ocean

X Yang, J Mao, R Li, F Huang, C He, C Zhao… - Earth and Planetary …, 2024 - Elsevier
Abstract The mid-Proterozoic (1.8–0.8 billion years ago, Ga) is generally considered to have
been an interval of relative stasis in terms of environmental and biological evolution. Indeed …

Co-application of rhenium, vanadium, uranium and molybdenum as paleo-redox proxies: Insight from modern and ancient environments

S Li, PB Wignall, SW Poulton - Chemical Geology, 2025 - Elsevier
Numerous approaches have been developed for determining past redox conditions in
marine settings (eg, Fe speciation, redox sensitive trace metal (RSTM) systematics, pyrite …

Redox changes in the Iapetus Ocean during the Late Ordovician extinction crises

A Sánchez-Roda, PB Wignall, Y **ong… - Journal of the …, 2024 - lyellcollection.org
The cause of the Late Ordovician mass extinction (LOME) is widely debated, with glaciation,
volcanism and oceanic redox fluctuations being proposed as possible drivers. Here, we …

Marine redox dynamics and biotic response to the mid-Silurian Ireviken Extinction Event in a mid-shelf setting

Y Wang, PB Wignall, Y **ong, DK Loydell… - Journal of the …, 2024 - lyellcollection.org
The early Silurian Llandovery–Wenlock boundary interval is marked by significant marine
perturbations and biotic turnover, culminating in the Ireviken Extinction Event and the Early …

Salinity-redox covariation in Mississippian Bowland Shale (Craven Basin, UK) controlled by eustasy and climate

Y Jiao, JF Emmings, L Zhou, TJ Algeo, L Feng, T He… - Chemical …, 2025 - Elsevier
Abstract Changes in watermass properties can be monitored in real time in modern
depositional systems, but reconstruction in deep-time systems is difficult. Here, we analyze …

Climatic controls on water-mass chemistry in a Paleocene lacustrine setting, Subei Basin, eastern China

Y Liu, L Yun, Z **, X He, Y Gao… - Geological …, 2024 - pubs.geoscienceworld.org
The Paleocene epoch was characterized by global climate fluctuations and major carbon-
cycle perturbations. During the greenhouse climate that characterized the early Cenozoic, a …

Revisiting the black shale depositional enigma: Transport processes and contrasting sediment sources in a heterolithic basin fill–Bowland Basin, England

S Li, PB Wignall, J Peakall, J Cui, Y Sun - Sedimentology, 2025 - Wiley Online Library
Factors that control the accumulation of organic‐rich shales are keenly debated and include
basin redox variations, sediment provenance and diverse depositional processes. The …

An introduction to the Bowland Shale Formation, UK: processes and resources

JF Emmings, J Parnell, MH Stephenson, BH Lodhia - 2024 - pubs.geoscienceworld.org
This volume showcases recent geological, geophysical and geochemical research on the
Carboniferous Bowland Shale Formation. The Bowland Shale is a relatively thick and …

A review of the Carboniferous shale gas potential of northern England: a data-based analysis of why it won't work

AJ Fraser, BH Lodhia, MJE Sims - 2024 - pubs.geoscienceworld.org
The recent shale gas revolution originated in the USA in the late 1990s with the exploration
of the Carboniferous Barnett Shale in Texas. Success in a number of additional basins in …