• Publications
  • Influence
Reduction of CO2 during serpentinization of olivine at 300 °C and 500 bar
CO 2 reduction processes occurring during experimental serpentinization of olivine at 300 °C and 500 bar confirm that ultramafic rocks can play an important role in the generation of abiogenicExpand
  • 451
  • 26
Redox evolution and mass transfer during serpentinization : An experimental and theoretical study at 200 °C, 500 bar with implications for ultramafic-hosted hydrothermal systems at Mid-Ocean Ridges
Abstract Highly reducing and high-pH vent fluids characterize moderately low temperature ultramafic-hosted hydrothermal systems, such as the recently discovered Lost City hydrothermal field at 30°NExpand
  • 203
  • 17
Hydrothermal serpentinization of peridotite within the oceanic crust: Experimental investigations of mineralogy and major element chemistry
Abstract Mantle derived ultramafic rocks form a significant portion of lithosphere created at slow-spreading mid-ocean ridges. These rocks are ubiquitously serpentinized, due at least in part toExpand
  • 267
  • 14
Abiotic formation of hydrocarbons under hydrothermal conditions: Constraints from chemical and isotope data
To understand reaction pathways and isotope systematics during mineral-catalyzed abiotic synthesis of hydrocarbons under hydrothermal conditions, experiments involving magnetite and CO{sub 2} andExpand
  • 131
  • 14
An experimental study of alteration of oceanic crust and terrigenous sediments at moderate temperatures (51 to 350°C): Insights as to chemical processes in near-shore ridge-flank hydrothermal systems
Studies of hydrothermal circulation within partly buried basement on the eastern flank of the Juan de Fuca Ridge (JFR) have shown that ridge-flank geochemical fluxes are potentially important for theExpand
  • 125
  • 13
Hydrothermal Fe fluxes during the Precambrian: Effect of low oceanic sulfate concentrations and low hydrostatic pressure on the composition of black smokers [rapid communication]
Abstract Modern mid-ocean ridge hydrothermal systems typically release vent fluids to the ocean with dissolved H2S in excess of Fe. These fluids are the consequence of high-temperature interactionsExpand
  • 158
  • 12
Hydrocarbons in Hydrothermal Vent Fluids: The Role of Chromium-Bearing Catalysts
Fischer-Tropsch type (FTT) synthesis has long been proposed to account for the existence of hydrocarbons in hydrothermal fluids. We show that iron- and chromium-bearing minerals catalyze the abioticExpand
  • 288
  • 11
Serpentinization and heat generation: constraints from Lost City and Rainbow hydrothermal systems
Abstract The discovery of ultramafic hosted hydrothermal systems at Rainbow (36°N MAR) and Lost City, a vent site approximately 15 km west of the MAR at 30°N, provides unique perspectives on chemicalExpand
  • 188
  • 11
Alteration of the oceanic crust: Implications for geochemical cycles of lithium and boron
Abstract Fresh tholeiitic basalt glass has been reacted with seawater at 150°C, (water/rock mass ratio of 10), and fresh diabase has been reacted with a Na-K-Ca-Cl fluid at 375°C (water/rock massExpand
  • 290
  • 11