Global marine redox evolution from the late Neoproterozoic to the early Paleozoic constrained by the integration of Mo and U isotope records
The emergence and diversification of early animals is commonly thought to have coincided
with atmosphere and ocean oxygenation across the terminal Neoproterozoic and early …
with atmosphere and ocean oxygenation across the terminal Neoproterozoic and early …
Uranium isotopes in marine carbonates as a global ocean paleoredox proxy: a critical review
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 …
changes to the Earth system through its history. The uranium isotopic composition (238 …
Extensive marine anoxia during the terminal Ediacaran Period
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 …
included many stem-group animals). To test whether oceanic anoxia might have played a …
Multiple episodes of extensive marine anoxia linked to global warming and continental weathering following the latest Permian mass extinction
Explaining the~ 5-million-year delay in marine biotic recovery following the latest Permian
mass extinction, the largest biotic crisis of the Phanerozoic, is a fundamental challenge for …
mass extinction, the largest biotic crisis of the Phanerozoic, is a fundamental challenge for …
Marine redox fluctuation as a potential trigger for the Cambrian explosion
The diversification of metazoans during the latest Neoproterozoic and early Cambrian has
been attributed to, among other factors, a progressive rise in surface oxygen levels …
been attributed to, among other factors, a progressive rise in surface oxygen levels …
Electron flux is a key determinant of uranium isotope fractionation during bacterial reduction
Uranium isotopic signatures in the rock record are utilized as a proxy for past redox
conditions on Earth. However, these signatures display significant variability that …
conditions on Earth. However, these signatures display significant variability that …
Reconciling proxy records and models of Earth's oxygenation during the Neoproterozoic and Palaeozoic
R Tostevin, BJW Mills - Interface focus, 2020 - royalsocietypublishing.org
A hypothesized rise in oxygen levels in the Neoproterozoic, dubbed the Neoproterozoic
Oxygenation Event, has been repeatedly linked to the origin and rise of animal life …
Oxygenation Event, has been repeatedly linked to the origin and rise of animal life …
[HTML][HTML] Precipitation of molybdenum from euxinic waters and the role of organic matter
GR Helz, TP Vorlicek - Chemical Geology, 2019 - Elsevier
Molybdenum preserved in organic-rich shales is a key archive employed in studying Earth's
past oxygenation and Life's evolution. In these shales, positive correlations between Mo and …
past oxygenation and Life's evolution. In these shales, positive correlations between Mo and …
Uranium isotope evidence for two episodes of deoxygenation during Oceanic Anoxic Event 2
MO Clarkson, CH Stirling, HC Jenkyns… - Proceedings of the …, 2018 - National Acad Sciences
Oceanic Anoxic Event 2 (OAE 2), occurring∼ 94 million years ago, was one of the most
extreme carbon cycle and climatic perturbations of the Phanerozoic Eon. It was typified by a …
extreme carbon cycle and climatic perturbations of the Phanerozoic Eon. It was typified by a …
Uranium isotope evidence for an expansion of anoxia in terminal Ediacaran oceans
Anoxic and iron-rich oceanic conditions prevailed throughout most of the Archean and
Proterozoic (4000 to c. 540 million years ago, Ma), but the oceans are hypothesised to have …
Proterozoic (4000 to c. 540 million years ago, Ma), but the oceans are hypothesised to have …