Robert Roback

Los Alamos National Laboratory

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Artas Migdisov

Los Alamos National Laboratory

Hongwu Xu

Los Alamos National Laboratory

Anthony E. Williams‐Jones

McGill University

Travis McLing

Center for Advanced Energy Studies

Xiaofeng Guo

Washington State University

Michael T. Murrell

Yale University

Hakim Boukhalfa

Los Alamos National Laboratory

Joseph F. Reese

Edinboro University

Paul W. Reimus

Los Alamos National Laboratory

Haylea Nisbet

Los Alamos National Laboratory

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Los Alamos National Laboratory

The University of Texas at Austin

McGill University

Idaho National Laboratory

United States Geological Survey

Washington State University

Lawrence Berkeley National Laboratory

Government of the United States of America

University of Southern California

Planetary Science Institute

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Nature and Age of Ductile Deformation Associated with the “Anorogenic” Town Mountain Granite, Llano Uplift, Central Texas

Proceedings of the International Conferences on Basement Tectonics (1998)

Robert M. Reed Robert Roback M. A. Helper

Laurentia

Basement

10.1007/978-94-011-5098-9_44

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Citations (7)

Hydrocarbons as ore fluids

Geochemical Perspectives Letters (2017)

Artas Migdisov Xiaofeng Guo Anthony E. Williams‐Jones Chenghao Sun O. V. Vasyukova

Conventional wisdom holds that aqueous solutions are the only non-magmatic fluids capable of concentrating metals in the Earth's crust.The role of hydrocarbons in metal concentration is relegated to providing geochemical barriers at which the metals are reduced and immobilised.Liquid hydrocarbons, however, are also known to be able to carry appreciable concentrations of metals, and travel considerable distances.Here we report the results of an experimental determination of bulk solubilities of Au, Zn, and U in a variety of crude oils at temperatures up to 300 °C and of the benchtop-scale transport experiments that simulate hydrocarbon-mediated re-deposition of Zn at 25-200 °C.It has been demonstrated that the metal concentrations obtained in solubility experiments are within the range of concentrations that are typically considered sufficient for aqueous fluids to form ore bodies.It has also been shown that Zn can be efficiently transported and re-deposited by hydrocarbons.These results provide direct evidence of the ability of natural crude oils to mobilise metals available in hydrocarbon-associated host rocks, and transport them in concentrations sufficient to contribute to ore-forming processes.

10.7185/geochemlet.1745

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Citations (59)

Evolution of Grenville Tectonic Provinces, Southeastern Llano Uplift, Central Texas

Proceedings of the International Conferences on Basement Tectonics (1998)

Sharon Mosher Robert Roback Joseph F. Reese

Plutonism

10.1007/978-94-011-5098-9_38

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Groundwater “fast paths” in the Snake River Plain aquifer: Radiogenic isotope ratios as natural groundwater tracers

Geology (2000)

Thomas M. Johnson Robert Roback Travis McLing Thomas D. Bullen Donald J. DePaolo

Preferential flow paths are expected in many groundwater systems and must be located because they can greatly affect contaminant transport.The fundamental characteristics of radiogenic isotope ratios in chemically evolving waters make them highly effective as preferential flow path indicators.These ratios tend to be more easily interpreted than solute-concentration data because their response to water-rock interaction is less complex.We demonstrate this approach with groundwater 87 Sr/ 86 Sr ratios in the Snake River Plain aquifer within and near the Idaho National Engineering and Environmental Laboratory.These data reveal slow-flow zones as lower 87 Sr/ 86 Sr areas created by prolonged interaction with the host basalts and a relatively fast flowing zone as a high 87 Sr/ 86 Sr area.

Radiogenic nuclide

Coastal plain

10.1130/0091-7613(2000)28<871:gfpits>2.0.co;2

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Citations (50)

Groundwater “fast paths” in the Snake River Plain aquifer: Radiogenic isotope ratios as natural groundwater tracers

Geology (2000)

Thomas M. Johnson Robert Roback Travis McLing Thomas D. Bullen Donald J. DePaolo

Radiogenic nuclide

10.1130/0091-7613(2000)028<0871:gfpits>2.3.co;2

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Citations (7)