Expanding the role of reactive transport models in critical zone processes

L Li, K Maher, A Navarre-Sitchler, J Druhan, C Meile… - Earth-science …, 2017 - Elsevier
Abstract Models test our understanding of processes and can reach beyond the spatial and
temporal scales of measurements. Multi-component Reactive Transport Models (RTMs) …

Coupled uranium mineralisation and bacterial sulphate reduction for the genesis of the Baxingtu sandstone-hosted U deposit, SW Songliao Basin, NE China

C Bonnetti, X Liu, Y Zhaobin, M Cuney, R Michels… - Ore Geology …, 2017 - Elsevier
The Baxingtu deposit is a typical redox front tabular-shaped uranium deposit hosted in
sandstones of the Late Cretaceous Yaojia Formation deposited within a braided river …

Reactive transport codes for subsurface environmental simulation

CI Steefel, CAJ Appelo, B Arora, D Jacques… - Computational …, 2015 - Springer
A general description of the mathematical and numerical formulations used in modern
numerical reactive transport codes relevant for subsurface environmental simulations is …

Influence of hydrological, biogeochemical and temperature transients on subsurface carbon fluxes in a flood plain environment

B Arora, NF Spycher, CI Steefel, S Molins, M Bill… - Biogeochemistry, 2016 - Springer
Flood plains play a potentially important role in the global carbon cycle. The accumulation of
organic matter in flood plains often induces the formation of chemically reduced …

Recent advances in integrated hydrologic models: Integration of new domains

AE Brookfield, H Ajami, RWH Carroll, C Tague… - Journal of …, 2023 - Elsevier
Over the past several decades, hydrologic models have advanced from independent models
of the surface and subsurface to integrated models that can capture the terrestrial hydrologic …

Large S isotope and trace element fractionations in pyrite of uranium roll front systems result from internally-driven biogeochemical cycle

C Bonnetti, L Zhou, T Riegler, J Brugger… - … et Cosmochimica Acta, 2020 - Elsevier
Complex pyrite textures associated with large changes in isotopic and trace element
compositions are routinely assumed to be indicative of multi-faceted processes involving …

Uranium reduction and isotopic fractionation in reducing sediments: Insights from reactive transport modeling

KV Lau, TW Lyons, K Maher - Geochimica et Cosmochimica Acta, 2020 - Elsevier
Uranium concentrations and isotopic ratios (238 U/235 U, denoted as δ 238 U) have been
used to provide quantitative information about the degree of oxygenation and de …

Physico-chemical heterogeneity of organic-rich sediments in the Rifle aquifer, CO: Impact on uranium biogeochemistry

N Janot, JS Lezama Pacheco, DQ Pham… - … science & technology, 2016 - ACS Publications
The Rifle alluvial aquifer along the Colorado River in west central Colorado contains fine-
grained, diffusion-limited sediment lenses that are substantially enriched in organic carbon …

Understanding controls on redox processes in floodplain sediments of the Upper Colorado River Basin

V Noël, K Boye, RK Kukkadapu, S Bone… - Science of the Total …, 2017 - Elsevier
Floodplains, heavily used for water supplies, housing, agriculture, mining, and industry, are
important repositories of organic carbon, nutrients, and metal contaminants. The …

Reactive transport at the crossroads

CI Steefel - Reviews in Mineralogy and Geochemistry, 2019 - pubs.geoscienceworld.org
Reactive transport in the Earth and Environmental Sciences is at a crossroads today. The
discipline has reached a level of maturity well beyond what could be demonstrated even 15 …