Uranium sorption to organic matter and long-term accumulation in a pristine alpine wetland

P Lefebvre, P Le Pape, A Mangeret, A Gourgiotis… - … et Cosmochimica Acta, 2022 - Elsevier
Understanding the controls on uranium (U) mobility in the environment is key to improve the
management of sites contaminated by U mining activities. Previous research has shown that …

UID: The uranium isotope database

H Li, FLH Tissot - Chemical Geology, 2023 - Elsevier
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 …

Did the Younger Dryas to Holocene climate transition favour high seismicity rates in the north‐western Alps?

M Banjan, C Crouzet, P Sabatier, H Jomard… - …, 2023 - Wiley Online Library
In the French north‐western Alps, several lakes of glacial origin, such as Aiguebelette and
La Thuile, present some mass‐transport deposits within their sedimentary sequences …

Ligand-induced U mobilization from chemogenic uraninite and biogenic noncrystalline U (IV) under anoxic conditions

KJ Chardi, A Satpathy, WDC Schenkeveld… - Environmental …, 2022 - ACS Publications
Microbial reduction of soluble hexavalent uranium (U (VI)) to sparingly soluble tetravalent
uranium (U (IV)) has been explored as an in situ strategy to immobilize U. Organic ligands …

[HTML][HTML] Uranium surface processes with sandstone and volcanic rocks in acidic and alkaline solutions

JPL Kenney, J Lezama-Pacheco, S Fendorf… - Journal of Colloid and …, 2023 - Elsevier
Understanding the behaviour of uranium waste, for disposal purposes, is crucial due to the
correlation between pH values and the disposal of distinct types of waste, with low level …

Combined U-Pb isotopic signatures of U mill tailings from France and Gabon: a new potential tracer to assess their fingerprint on the environment

A Beaumais, A Mangeret, D Suhard, P Blanchart… - Journal of Hazardous …, 2022 - Elsevier
Uranium milling activities have produced high volumes of long-lived radioactive processed
wastes stored worldwide in near surface environment. The aim of this study is to highlight …

Influence of microorganisms on uranium release from mining-impacted lake sediments under various oxygenation conditions

M Seder-Colomina, A Mangeret, P Bauda… - … Science: Processes & …, 2022 - pubs.rsc.org
Microbial processes can be involved in the remobilization of uranium (U) from reduced
sediments under O2 reoxidation events such as water table fluctuations. Such reactions …

Geochemical controls on the uranium cycle in a lake watershed

P Lefebvre, A Mangeret, A Gourgiotis… - ACS Earth and Space …, 2023 - ACS Publications
Understanding the uranium (U) cycle─ reservoirs and processes─ at the watershed scale
is key to manage contaminated areas, to elucidate ore formation processes, as well as to …

Solid-phase Mn speciation in suspended particles along meltwater-influenced fjords of West Greenland

CM Van Genuchten, MJ Hopwood, T Liu… - … et Cosmochimica Acta, 2022 - Elsevier
Manganese (Mn) is an essential micro-nutrient that can limit or, along with iron (Fe), co-limit
phytoplankton growth in the ocean. Glacier meltwater is thought to be a key source of trace …

Climate-driven fluxes of organic-bound uranium to an alpine lake over the Holocene

P Lefebvre, P Sabatier, A Mangeret, A Gourgiotis… - Science of the Total …, 2021 - Elsevier
Uranium (U) isotopic signatures and concentration in sediments are widely used as paleo-
redox proxies, as the behavior of U is often controlled by bottom water oxygenation. Here …