A5053235704- Geological and Geochemical Analysis
- Hydrocarbon exploration and reservoir analysis
- Geology and Paleoclimatology Research
- earthquake and tectonic studies
- Geological formations and processes
- Methane Hydrates and Related Phenomena
- Geological Formations and Processes Exploration
- Geochemistry and Geologic Mapping
- Geological Studies and Exploration
- Paleontology and Stratigraphy of Fossils
- Atmospheric and Environmental Gas Dynamics
- CO2 Sequestration and Geologic Interactions
- Groundwater and Isotope Geochemistry
- Hydraulic Fracturing and Reservoir Analysis
- Island Studies and Pacific Affairs
- Plant and animal studies
- Ocean Acidification Effects and Responses
- Echinoderm biology and ecology
- Management and Marketing Education
- Slime Mold and Myxomycetes Research
- Turfgrass Adaptation and Management
- Geological Modeling and Analysis
- Planetary Science and Exploration
- Food Security and Health in Diverse Populations
- Mining Techniques and Economics
Planetary Science Institute
2024-2025
Harvard University
2024-2025
Northern Arizona University
2022-2024
University of Calgary
2024
University of Arizona
2020-2024
Loughborough University
2022
ETH Zurich
2020
Summary Bryophytes, including the lineages of mosses, liverworts, and hornworts, are second‐largest photoautotroph group on Earth. Recent work across terrestrial ecosystems has highlighted how bryophytes retain control water, fix substantial amounts carbon (C), contribute to nitrogen (N) cycles in forests (boreal, temperate, tropical), tundra, peatlands, grasslands, deserts. Understanding changing climate affects bryophyte contributions global different is primary importance. However,...
While it has been known for some time that reducing fluids have bleached red beds adjacent to fault zones and regionally across the Colorado Plateau, volumes of expelled along faults never quantified. We developed applied a suite one-dimensional hydrologic models test hypothesis internally generated, migrated up sub-basin bounding Paradox Basin overlying beds. The internal fluid driving mechanisms included are mechanical compaction, petroleum natural gas generation, aquathermal expansion...
Abstract The Paradox Basin in the Colorado Plateau (USA) has some of most iconic records paleofluid flow, including sandstone bleaching and ore mineralization, hydrocarbon, CO2, He reservoirs, yet sources fluids responsible for these extensive fluid-rock reactions are highly debated. This study, first time, characterizes within basin to constrain emergent behavior flow resulting rock records. Major ion isotopic (δ18Owater; δDwater; δ18OSO4; δ34SSO4; δ34SH2S; 87Sr/86Sr) signatures formation...
Abstract Krypton‐81 dating provides new insights into the timing, mechanisms, and extent of meteoric flushing versus retention saline fluids in subsurface response to changes geologic and/or climatic forcings over 50 ka 1.2 Ma year timescales. Remnant Paleozoic seawater‐derived brines associated with evaporites Paradox Basin, Colorado Plateau, are beyond 81 Kr range (>1.2 Ma) have likely been preserved due negative fluid buoyancy low permeability. formation waters above indicates...
Abstract Conceptual models of sedimentary basin groundwater flow systems typically assume that the crystalline basement acts as an impermeable boundary and can be neglected. In this study, we use hydrologic constrained by isotopic geochemical datasets to argue La Sal Mountains, Utah, USA, act a window into Paradox Basin’s lower aquifer system underlying basement. We conducted sensitivity study in which varied basement/laccolith permeability well fault zone connectivity along cross-sectional...
Abstract Erosion may modify the architecture of subsurface flow systems by removing confining units and changing topography to influence patterns fluid circulation or inducing gas exsolution from fluids, influencing compositional buoyancy in systems. Here, we examine geologic record sedimentary rocks Paradox Basin Colorado Plateau (southwestern USA), including distribution ages Fe- Mn-oxide deposits bleached, former red-bed sandstones. We compare our results those previous geo-...
Abstract How subsurface microbial life changed at the bottom of kilometers‐deep (hypo) Critical Zone in response to evolving surface conditions over geologic time is an open question. This study investigates burial and exhumation, biodegradation, fluid circulation history hydrocarbon reservoirs across Colorado Plateau as a window into hypo‐Critical Zone. Hydrocarbon reservoirs, Paradox Uinta basins, were deeply buried starting ca. 100 60 Ma, reaching temperatures >80–140°C, likely...
Abstract Extensive regions of yellow and white (“bleached”) sandstones within the terrestrial Jurassic red bed deposits Colorado Plateau reflect widespread interaction with subsurface reduced fluids which resulted in dissolution iron‐oxide grain coatings. Reduced such as hydrocarbons, CO 2 , organic acids have been proposed bleaching agents. In this study, we characterize an altered section Slick Rock member Entrada Sandstone that exposes bleached sandstone bitumen‐saturated pore spaces. We...
Abstract The Anthropocene has been framed around humanity's impact on atmospheric, biologic, and near‐surface processes, such as land use vegetation change, greenhouse gas emissions, the above‐ground hydrologic cycle. Groundwater extraction lowered water tables in many key aquifers but comparatively little attention given to impacts deeper subsurface. Here, we show that fluid fluxes from injection of fluids associated with oil production inflow into mines likely exceed background flow rates...
Abstract Sedimentary rocks of the Paradox Basin Colorado Plateau (southwestern USA) record widespread manifestations paleo–fluid flow and fluid-rock reactions including Cu, U-V, Fe-Mn mineral deposits, Si Ca metasomatism, hydrocarbon accumulations, bleached sandstones. Many these are spatially associated with faults. Here we show evidence for a phase fault-related fluid migration mineralization at 41–48 Ma in Basin. We measured K-Ar dates multiple size fractions clay-rich fault gouge,...
<p>Includes all calculations and parameters used in this study (mass balance calculations, groundwater transit times, methane required for bleaching, amount of exsolved), as well sample locations. </p>
<p>Includes all calculations and parameters used in this study (mass balance calculations, groundwater transit times, methane required for bleaching, amount of exsolved), as well sample locations. </p>
The Anthropocene has been framed around humanity's impact on atmospheric, biologic, and near-surface processes, such as land use vegetation change, greenhouse gas emissions, the above-ground hydrologic cycle.Groundwater extraction lowered water tables in many key aquifers but comparatively little attention given to impacts deeper subsurface.Here, we show that fluid fluxes from injection of fluids associated with oil production inflow into mines likely exceed background flow rates deep (>500...
Krypton-81 dating provides new insights into the timing, mechanisms, and extent of meteoric flushing versus retention saline fluids in subsurface response to changes geologic and/or climatic forcings over 50 ka 1.2 Ma year timescales. Remnant Paleozoic seawater-derived brines (2-2.5 km depth) associated with evaporites Paradox Basin, Colorado Plateau, are beyond 81Kr range (>1.2 Ma) have likely been preserved due negative fluid buoyancy low permeability. formation waters above indicates...
Landscapes and ecosystems are the result of two-way interactions between hydro-geomorphic biological processes. Many animals, particularly those that build structures or transport sediment, important biogeomorphic agents. Glossosomatidae caddisfly larvae (Insecta, Trichoptera) globally widespread abundant inhabitants gravel-bed rivers. mobile cases from sand they over river bed. However, there is limited understanding on how bioconstructions may influence distribution in rivers their...
Abstract. Some 20 Myr after the Late Jurassic to Early Cretaceous obduction and collision at eastern margin of Adria, eroded Pelagonia (Adria)–Axios/Vardar (oceanic complex) contact collapsed, forming Kallipetra Basin, described around Aliakmon River near Veroia (northern Greece). Clastic carbonate marine sediments deposited from early Cenomanian end Turonian, with abundant olistoliths slope failures base due active normal faults. The middle part series is characterized by red green pelagic...