Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"Fluid-rock interactions"”.
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Fluid-rock interactions in a carbon storage site analogue, Green River, Utah
… or facilitate leakage by corroding cap rocks and fault seals. Modelling the progress of such reactions is frustrated by uncertainties in the absolute mineral surface reaction rates and the significance of other rate limiting steps in natural systems. This study uses the chemical …
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Mass transfer and chemical interactions in subduction zones
… constraints from exhumed high-pressure rocks and erupted arc magmas, high pressure-temperature laboratory experiments, and thermodynamic calculations. Chapters 2 and 3 investigate the fluid-mediated reactions between mafic and ultramafic rocks at conditions relevant to the slab-mantle …
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Mass Transfer and Chemical Interactions in Subduction Zones
… constraints from exhumed high-pressure rocks and erupted arc magmas, high pressure-temperature laboratory experiments, and thermodynamic calculations. Chapters 2 and 3 investigate the fluid-mediated reactions between mafic and ultramafic rocks at conditions relevant to the slab-mantle …
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Geochemistry of fluid-rock processes
When these fluids interact with the surrounding rocks, small aliquots of these fluids are trapped as imperfections in the crystal lattice and fractures of minerals. These microscopic features are called fluid and melt inclusions, and are one of the best tools available to probe, measure and …
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Early Water on Mars Hindered Subduction-Driven Plate Tectonics
… regarding ancient aqueous alteration and fluid-rock interactions on Mars supports my hypothesis. This implies that the hydrologically active history of earlier Mars might have paradoxically contributed to the long-term quiescence of its tectonics.
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Deciphering the signature of fluid/rock reactions in the lower oceanic crust: The Oman ophiolite analogue
… The characterization and quantification of fluid/rock reactions and fluid fluxes in fast-spreading mid-ocean ridges has been a long-term ambition given these ridges are responsible for formation of two thirds of present day oceanic crust. However, our understanding of fluid pathways and the …
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Applying U-Th Disequilibrium to Dating Siliceous Sinter
… within uranium (U)-rich silicic volcanic rock where subsurface fluid-rock interactions extract U into hydrothermal fluids. As U is precipitated in the surface sinter deposit, assuming closed-system behavior, it begins to produce Th as an intermediate daughter product within the U-Th-Pb …
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Thermo-tectonic record of hyperextension, structural inversion, and foreland basin evolution of the eastern and central Pyrenees
… pluton with middle crustal gneisses, and fluid-rock interactions along a detachment fault. Novel method integration and approaches using apatite were developed and implemented in these chapters to best interpret the apatite U-Pb ages to gain the most insight into thermal, structural, and …
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Advances in Subduction Zone Processes
… and producing anhydrous minerals and a free fluid phase. Previous works attempting to understand the evolution of subducted lithologies have provided a firm foundation in which to apply field work, computational thermodynamic modeling, and geochronological techniques in order to better …
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Comparative Geochemical Analysis of Ordovician and Mississippian Cherts in Relation to the Northern Arkansas and the Tri-State Mississippi Valley-type Ore Districts
… have experienced interaction with hydrothermal fluids due to tectonic forces produced by the Ouachita Orogeny. Lead (Pb) isotope analyses and resulting values produced through previous and concurrent geochemical studies of several formations indicate that the Mississippi Valley-type (MVT) ores …
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Recognising cryptic alteration surrounding the Mount Isa Copper Deposits: Implications for controls on fluid flow, and mineral exploration
… were used to constrain aspects of hydrothermal fluid flow and fluid-rock interactions that occurred as part of the mineralising system responsible for forming this world-class orebody. This study demonstrates the utility of several different approaches to identify and map cryptic alteration …
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The structural architecture of seismogenic faults, Sierra Nevada, California; implications for earthquake rupture processes
… volume of heavily fractured and altered host rock between approximately planar fault core strands. The fault cores are centimetres wide and contain cataclasites and foliated cataclasites that are cross-cut by pseudotachylytes. Fault-related damage is limited in extent to several metres beyond …