Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Roger Beckie"'
Autor:
Roger Beckie, E.K. Skierszkan, Joyce M. McBeth, Jordi Helsen, Clément P. Bataille, Ghislain de Laplante, Laura-Lee Findlater, John W. Dockrey, K. Ulrich Mayer
Publikováno v:
ACS Earth and Space Chemistry. 5:3474-3487
Uranium (U) contamination in groundwater from geogenic sources affects water quality globally. Here, we use a multifaceted isotopic and geochemical approach to elucidate U sources and controls on g...
Publikováno v:
Hydrogeology Journal. 29:1797-1812
Ancient river channels or subglacial drainage networks infilled with younger sediments can include significant deposits of highly permeable sands and gravels. Despite being hidden at surface, such systems are ubiquitous globally, can form highly prod
Publikováno v:
Geophysical Research Letters. 48
Publikováno v:
Stochastic Environmental Research and Risk Assessment. 34:219-233
Heterogeneity in waste rock piles (WRPs) determines uncertainty in acid mine drainage (ARD) predictions from these deposits. Numerical modeling based on a novel and efficient stochastic framework to evaluate influential heterogeneity-linked factors c
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
Scientific Reports
Scientific Reports
Subsurface natural gas release from leaking oil and gas wells is a major environmental concern. Gas migration can cause aquifer contamination, explosive conditions in soil gas, and greenhouse gas emissions. Gas migration is controlled by complex inte
Autor:
Roger Beckie, E.K. Skierszkan, Kristin Salzsauler, Celedonio Aranda, Melanie St-Arnault, K. Ulrich Mayer, Bas Vriens
Publikováno v:
ACS Omega
ACS Omega, Vol 4, Iss 6, Pp 10205-10215 (2019)
ACS Omega, Vol 4, Iss 6, Pp 10205-10215 (2019)
Most studies on the weathering of mine waste rock focus on the generation of acidic drainage with high metal concentrations, whereas metal(loid) release under neutral-rock drainage (NRD) conditions has received limited attention. Here, we present geo
Autor:
R. M. Lauer, Maximillian Goetz, Andrew Black, Andrew Allen, Dirk Kirste, Bethany Ladd, Jessie Chao, Iain Hawthorne, K. Ulrich Mayer, Roger Beckie, Elyse Sandl, Aaron G. Cahill, Bernhard Mayer, Laurie Welch, J. Soares, Niko Finke, Chitra Chopra, Cara C. Manning, Tim Cary, Sean A. Crowe
Publikováno v:
Greenhouse Gases: Science and Technology. 9:134-151
Publikováno v:
Geochimica et Cosmochimica Acta. 244:383-402
Laboratory batch experiments were conducted to study Mo isotope fractionation during the precipitation of powellite (CaMoO4) and wulfenite (PbMoO4). These minerals act as important sinks of dissolved Mo, especially in alkaline-pH mine drainage. Their
Autor:
Celedonio Aranda, Roger Beckie, Bas Vriens, Holly Peterson, Laura Laurenzi, Leslie Smith, K. Ulrich Mayer
Publikováno v:
Chemosphere. 215:858-869
The weathering of mine waste rock can cause release of metal-laden and acidic drainage that requires long-term and costly environmental management. To identify and quantify the geochemical processes and physical transport mechanisms controlling drain
Publikováno v:
Applied Geochemistry. 100:305-315
The weathering of sulfide minerals in waste rock controls drainage water quality and water treatment requirements at mine sites. The availability of oxygen strongly affects the weathering rate of sulfidic waste rock but poregas distributions in heter