[HTML][HTML] Environmental controls on very high δ238U values in reducing sediments: Implications for Neoproterozoic seawater records
Uranium isotopes (δ 238 U) are a widely applied tool for tracing global changes in oceanic
anoxia. Interpretation of seawater values and trends, often reconstructed from carbonates …
anoxia. Interpretation of seawater values and trends, often reconstructed from carbonates …
Nitrate limitation in early Neoproterozoic oceans delayed the ecological rise of eukaryotes
The early Neoproterozoic Era witnessed the initial ecological rise of eukaryotes at ca. 800
Ma. To assess whether nitrate availability played an important role in this evolutionary event …
Ma. To assess whether nitrate availability played an important role in this evolutionary event …
UID: The uranium isotope database
As the parent element in the U-Pb and Pb-Pb radiochronometers, uranium (U) was one of
the first heavy elements whose isotopic composition was carefully determined. Thought to …
the first heavy elements whose isotopic composition was carefully determined. Thought to …
A shallow-water oxygen minimum zone in an oligotrophic Tonian basin
Y Sun, W Wang, X Lang, C Guan, Q Ouyang… - Nature …, 2025 - nature.com
Abstract The Tonian Period (1000–720 Ma) bore witness to the transition from a prokaryote-
dominated marine ecosystem to one characterized by the proliferation of eukaryotes. This …
dominated marine ecosystem to one characterized by the proliferation of eukaryotes. This …
[HTML][HTML] Persistent late Tonian shallow marine anoxia and euxinia
The increase in the complexity of eukaryotic life during the Tonian Period (ca. 1000 to 720
Ma) is commonly associated with the oxygenation of the Earth's ocean–atmosphere system …
Ma) is commonly associated with the oxygenation of the Earth's ocean–atmosphere system …
[HTML][HTML] Regional conditions cause contrasting behaviour in U-isotope fractionation in black shales: Constraints for global ocean palaeo-redox reconstructions
The U-isotope system is a well-established palaeo-redox proxy that potentially constrains
the global extent of marine anoxia during average as well as extreme redox events …
the global extent of marine anoxia during average as well as extreme redox events …
New paleomagnetic results from the ca. 1.0 Ga Jiayuan Formation of the Huaibei Group in the North China craton, and their paleogeographic implications
The Rodinia supercontinent formed in the transition between Mesoproterozoic and
Neoproterozoic. The high-quality paleomagnetic poles around 1000 Ma, however, are rather …
Neoproterozoic. The high-quality paleomagnetic poles around 1000 Ma, however, are rather …
Productivity and organic carbon loading control uranium isotope behavior in ancient reducing settings: Implications for the paleoredox proxy
Uranium isotopes in ancient sedimentary rocks have emerged as a powerful proxy for the
oxygenation history of Earth surface environments. Proper quantitative interpretation of δ …
oxygenation history of Earth surface environments. Proper quantitative interpretation of δ …
Uranium isotope systematics of a low-productivity ferruginous ocean analog: Implications for the uranium isotope record of early Earth
The uranium isotope (δ 238 U) paleo-redox proxy has emerged as a premier tool for
understanding ocean oxygenation through Earth's history. The fidelity of this important proxy …
understanding ocean oxygenation through Earth's history. The fidelity of this important proxy …
Cascading oxygen loss shoreward in the oceans: Insights from the Cambrian SPICE event
AL Sørensen, TW Dahl - One Earth, 2024 - cell.com
Marine euxinia can amplify phosphorous-limited marine productivity by recycling
phosphorous from sediments, creating a feedback loop that increases marine oxygen …
phosphorous from sediments, creating a feedback loop that increases marine oxygen …