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Courses
- WSEWater Science and the Environment
- FWQFundamentals of Water Quality
- ITHIsotope Tracers in Hydrogeology
- EWQIEnvironmental Water Quality Issues
Grants
- Influence of Drought and Storm Events on Metals Transport in Cienega Creek Watershed - Phase One
Principal Investigator (PI)
2022
$138.0K
Active - Collaborative Research: Evolution of Subsurface Microbe-Rock-Fluid Systems
Principal Investigator (PI)
2021
$1.2M
Active - CIFAR program Earth 4D: Subsurface Science and Exploration
Principal Investigator (PI)
2019
$89.1K
Active - CIFAR Program in Earth 4D: Subsurface Science and Exploration
Principal Investigator (PI)
2021
$7.8K
- Hydrologic and Natural Tracer Study to Investigate Davidson Canyon Alluvial Aquifer and Surface Flows
Principal Investigator (PI)
2020
$147.5K
- CIFAR program Earth 4D: Subsurface Science and Exploration
Principal Investigator (PI)
2020
$3.7K
- Hydrochemical modeling study to determine radiocarbon ages and flowpaths of groundwater in Lower Cienega Creek and Davidson Canyon watersheds.
Principal Investigator (PI)
2019
$53.0K
- Assessment of Arizona Groundwater Resources by Applying Geochemical and Hydrogeologic Techniques
Principal Investigator (PI)
2018
$49.1K
- Hydrogeological Conceptual Model for the Las Cienegas National Conservation Area to Inform Management Decision Making
Principal Investigator (PI)
2018
$9.1K
- Davidson Canyon and Lower Cienega Creek Watershed: Natural Tracer Study to Constrain Transit Times and Flow Paths of Groundwater
Principal Investigator (PI)
2017
$50.0K
News
- Counting krypton: Water miles below Earth's surface isn't as old as scientists once thought
2022
- New Estimate Makes Groundwater, Not Ice Sheets, Largest Water Reservoir on Land
2021
- NSF Awards UArizona-Led Team $2.8M to Study Earth's Mysterious Subsurface
2021
- Fracking Has Less Impact on Groundwater Than Traditional Oil and Gas Production
2019
- U.S. Groundwater in Peril: Potable Supply Less Than Thought
2018
- UA Geoscientists Take a Crack at Paradox Basin's Mysteries
2017
- UA Awarded $4.35M to Study Earth's Critical Zone
2009
- UA Hydrologist Studies Huge Natural Gas Reserves Created by Microbes
2007
Publications (197)
- A new large volume equilibration method for high precision measurements of dissolved noble gas stable isotopes
2023
- span style= font-size:11pt; Pliocene subsurface fluid flow driven by rapid erosional exhumation of the Colorado Plateau /span
2023
- Groundwater deeper than 500 m contributes less than 0.1% of global river discharge
2023
- Evaluation of strontium isotope tracers of produced water sources from multiple stacked reservoirs in Appalachian, Williston and Permian basins
2022
- Krypton-81 dating constrains timing of deep groundwater flow activation
2022
- The Role of Confining Units in the Sequestration of Freshwater Beneath Nantucket Island and Nantucket Sound during Holocene Sea-Level Rise
2022
- span style= font-size:11pt; Burial and denudation alter microbial life at the bottom of the kilometers-deep Critical Zone /span
2022
- The low permeability of the earth's Precambrian crust
2022
- Basin architecture controls on the chemical evolution and 4He distribution of groundwater in the Paradox Basin
2022
- Hydrogeochemical evolution of formation waters responsible for sandstone bleaching and ore mineralization in the Paradox Basin, Colorado Plateau, USA
2022
- In Situ Enhancement and Isotopic Labeling of Biogenic Coalbed Methane
2022
- A geochemical and isotopic assessment of hydraulic connectivity of a stacked aquifer system in the Lisbon Valley, Utah (USA), and critical evaluation of environmental tracers
2021
- Deuterium as a quantitative tracer of enhanced microbial methane production
2021
- Experimental weathering of a volcaniclastic critical zone profile: Key role of colloidal constituents in aqueous geochemical response
2021
- Deep Meteoric Water Circulation in Earth's Crust
2021
- Signatures of Hydrologic Function Across the Critical Zone Observatory Network
2021
- Groundwater Origin and Dynamics on the Eastern Flank of the Colorado River Delta, Mexico
2021
- A Mountain-Front Recharge Component Characterization Approach Combining Groundwater Age Distributions, Noble Gas Thermometry, and Fluid and Energy Transport Modeling
2021
- Commingled Fluids in Abandoned Boreholes: Proximity Analysis of a Hidden Liability
2021
- Changes in Deep Groundwater Flow Patterns Related to Oil and Gas Activities
2021
- Variability in Timing and Transport of Pleistocene Meltwater Recharge to Regional Aquifers
2021
- U-series and Sr isotopes as tracers of mineral weathering and water routing from the deep Critical Zone to streamflow in a high-elevation volcanic catchment
2021
- Perfluoroalkyl and polyfluoroalkyl substances (PFAS) in groundwater at a reclaimed water recharge facility
2021
- Deep Trek: Mission Concepts for Exploring Subsurface Habitability Life on Mars — A Window into Subsurface Life in the Solar System
2021
- Crustal Groundwater Volumes Greater Than Previously Thought
2021
- Groundwater Isotopes in the Sonoyta River Watershed, USA-Mexico: Implications for Recharge Sources and Management of the Quitobaquito Springs
2020
- Profiling life and its role in sculpting the Critical Zone
2020
- Where Is the Bottom of a Watershed?
2020
- Ubiquitous Fractal Scaling and Filtering Behavior of Hydrologic Fluxes and Storages from A Mountain Headwater Catchment
2020
- Rethinking groundwater age
2020
- Resolving deep critical zone architecture in complex volcanic terrain
2020
- Vegetation source water identification using isotopic and hydrometric observations from a subhumid mountain catchment
2020
- Comment on âGroundwater Pumping Is a Significant Unrecognized Contributor to Global Anthropogenic Element Cyclesâ
2019
- Distinct stores and the routing of water in the deep critical zone of a snow-dominated volcanic catchment
2019
- The effect of geochemical processes on groundwater in the Velenje coal basin, Slovenia: insights from mineralogy, trace elements and isotopes signatures
2019
- Changes in microbial communities and associated water and gas geochemistry across a sulfate gradient in coal beds: Powder River Basin, USA
2019
- Carbon mass balance, isotopic tracers of biogenic methane, and the role of acetate in coal beds: Powder River Basin (USA)
2019
- Mountain-Block Recharge: A Review of Current Understanding
2019
- Conventional OilâThe Forgotten Part of the Water-Energy Nexus
2019
- Evaluation of groundwater sources, flow paths, and residence time of the Gran Desierto pozos, Sonora, Mexico
2019
- The Persistence of Brines in Sedimentary Basins
2018
- A critical review of state-of-the-art and emerging approaches to identify fracking-derived gases and associated contaminants in aquifers
2018
- Subsurface pore water contributions to stream concentration-discharge relations across a snowmelt hydrograph
2018
- Hydromechanical Impacts of Pleistocene Glaciations on Pore Fluid Pressure Evolution, Rock Failure, and Brine Migration Within Sedimentary Basins and the Crystalline Basement
2018
- Competition for shrinking window of low salinity groundwater
2018
- Salt dissolution and permeability in the Western Canada Sedimentary basin
2018
- Microbial community composition of a hydrocarbon reservoir 40 years after a CO2 enhanced oil recovery flood
2018
- Modeled impacts of sulfuric acid leaching solution on two groundwater types in the Upper Cienega Creek Watershed
2017
- Impact of Wildfire on Solute Release in Forested Catchments, Jemez River, New Mexico, USA
2017
- Changing Water, Carbon and Energy Fluxes Alters Deep CZ Structure and Solute Exports to Streams
2017
- Hydrologic and Environmental Controls on Uranium-Series Isotopes in a Natural Volcanic Weathering Environment
2017
- Aqueous Sulfate Levels Control Methanogen Diversity and Activity in Subsurface Coal Seams
2017
- Deuterium as a Quantitative Tracer of Enhanced Microbial Coalbed Methane Production
2017
- Biogeochemical control points in a water‐limited critical zone
2017
- Expanding the role of reactive transport models in critical zone processes
2017
- Hydrologic and environmental controls on uranium‐series and strontium isotope ratios in a natural weathering environment
2017
- Evolution of concentration‐discharge relations revealed by high frequency diurnal sampling of stream water during spring snowmelt
2017
- Microbial methane from in situ biodegradation of coal and shale: A review and reevaluation of hydrogen and carbon isotope signatures
2017
- Geochemical evolution of the Critical Zone across variable time scales informs concentration-discharge relationships: Jemez River Basin Critical Zone Observatory
2017
- Hydrologic functioning of the deep Critical Zone and contributions to streamflow in a high elevation catchment: testing of multiple conceptual models
2017
- Impact of formation water geochemistry and crude oil biodegradation on microbial methanogenesis
2016
- Solid-phase redistribution of rare earth elements in hillslope pedons subjected to different hydrologic fluxes
2016
- Determining CO2 storage potential during miscible CO2 enhanced oil recovery: Noble gas and stable isotope tracers
2016
- U-series isotopic signatures of soils and headwater streams in a semi-arid complex volcanic terrain
2016
- Environmental Drivers of Differences in Microbial Community Structure in Crude Oil Reservoirs across a Methanogenic Gradient
2016
- Influence of climate variability on water partitioning and effective energy and mass transfer (EEMT) in a semi-arid critical zone
2016
- Colloids and organic matter complexation control trace metal concentration-dsicharge relationships in Marshall Gulch stream waters
2016
- Seasonal glacial meltwater contributions to surface water in the Bolivian Andes: A case study using environmental tracers
2016
- Hydrogeochemistry and coal-associated bacterial populations from a methanogenic coal bed
2016
- Source and Cycling of Trace Metals and Nutrients in a Microbial Coalbed Methane System
2015
- The effect of long-term regional pumping on hydrochemistry and dissolved gas content in an undeveloped shale-gas-bearing aquifer in southwestern Ontario, Canada
2015
- Climatic and landscape controls on water transit times and silicate mineral weathering in the critical zone
2015
- Relationship Between Recharge, Redox Conditions, and Microbial Methane Generation in Coal Beds
2015
- Critical Zone Services: Expanding Context, Constraints, and Currency beyond Ecosystem Services
2015
- Tracing Anthropogenic Salinity Inputs to the Semi-arid Rio Grande River: A Multi-isotope Tracer (U, S, B and Sr) Approach
2015
- Nonequilibrium clumped isotope signals in microbial methane
2015
- Influence of terrain aspect on water partitioning, vegetation structure, and vegetation greening in high elevation catchments in northern New Mexico
2015
- Reply to Ryan et al. comment on Origin, distribution and hydrogeochemical controls on methane occurrences in shallow aquifers, southwestern Ontario
2015
- Enhanced microbial coalbed methane generation: A review of research, commercial activity, and remaining challenges
2015
- Climatic and landscape influences on soil moisture are primary determinants of soil carbon fluxes in seasonally snow-covered forest ecosystems
2015
- Rare earth elements as reactive tracers of biogeochemical weathering in forested rhyolitic terrain
2015
- Fate of injected CO2 in the Wilcox Group, Louisiana, Gulf Coast Basin: Chemical and isotopic tracers of microbial-brine-rock-CO2 interactions
2014
- Geospatial Hydrochemical and Microbiological Implications on the Occurrence of Crude Oil Biodegradation and Methanogenesis
2014
- Co-evolution of Climate, Soil, and Vegetation and their interplay with Hydrological Partitioning at the Catchment Scale
2014
- Origin, distribution and hydrogeochemical controls on methane occurrences in shallow aquifers, southwestern Ontario, Canada
2014
- Bioconversion of Coal: Hydrologic indicators of the extent of coal biodegradation under different redox conditions and coal maturity, Velenje Basin case study, Slovenia
2014
- Evaluation of the importance of clay confining units on groundwater flow in alluvial basins using solute and isotope tracers: the case of Middle San Pedro Basin in southeastern Arizona (USA)
2014
- Impacts of Wildfire on Throughfall and Stemflow Precipitation Chemistry
2014
- A geochemical and stable isotope investigation of groundwater/surface-water interactions in the Velenje Basin, Slovenia
2014
- Stream water carbon controls in seasonally snow-covered mountain catchments: impact of inter-annual variability of water fluxes, catchment aspect and seasonal processes
2014
- U and Sr Isotope Tracers of Agricultural Salinity Sources to the Lower Rio Grande River
2014
- Organic substances in produced and formation water from unconventional natural gas extraction in coal and shale
2014
- Coevolution of nonlinear trends in vegetation, soils, and topography with elevation and slope aspect: A case study in the sky islands of southern Arizona
2013
- Tradeoffs of modifications of storm water managements systems for nitrogen loss pathways in semi-arid ecosystems
2013
- Re-assessing H and C Isotope Signatures of Biogenic Methane in Coalbeds and Shales: Metabolic Pathways and Alternative Influences
2013
- A cross-site comparison of factors controlling streamwater carbon flux in western North American catchments
2013
- Isotopic and Chemical Constraints on the Biogeochemistry of Dissolved Inorganic Carbon and Chemical Weathering in the Karst Watershed of Krka River (Slovenia)
2013
- Using Uranium Isotopes to Determine Salinity Sources in Rio Grande Waters
2013
- Chemical Dynamics and Evaluation of Biogeochemical Processes in Alpine River Kamnika Bistrica, North Slovenia
2013
- Boron desorption and boron isotopes in sodium bicarbonate coalbed methane waters
2013
- Constraining Glacial Runoff Contributions to Water Resources in the Cordillera Real, Bolivia using Environmental Tracers
2013
- Extent and limits of biodegradation by in situ methanogenic consortia in shale and formation fluids
2013
- Insights on Biogeochemistry from the Triple Isotope System of Nitrate
2013
- Fluid Chemistry Dynamics Before and After Fire in the Jemez River Basin Critical Zone Observatory
2013
- Carbon and water, the energy for weathering and chemical denudation
2012
- Using O-17 to Investigate Nitrate Sources and Sinks in a Semi-Arid Groundwater System
2012
- Carbon isotope modeling of methanogenic coal biodegradation: Metabolic pathways, mass balance, and the role of sulfate reduction, Powder River Basin, USA
2012
- The fate of carbon dioxide injected into a coal-bearing formation
2012
- Quantifying the effects of stream channels on storm water quality in a semi-arid urban environment
2012
- Determining solute inputs to soil and stream waters in a seasonally snow-covered mountain catchment in northern New Mexico using Ge/Si, 87Sr/86Sr and ion chemistry
2012
- Using Uranium-series Isotopes to Trace Water Sources to Streamflow and Estimate Soil Formation Rates in a Semiarid Montane Catchment
2012
- Carbon cycling in the Pliocene Velenje Coal Basin, Slovenia, inferred from stable carbon isotopes
2012
- STREAM WATER ORGANIC MATTER CHARACTERISTICS BEFORE AND AFTER THE LAS CONCHAS WILDFIRE IN NM
2012
- Water storage dynamics in high elevation semi-arid catchments
2012
- Quantifying Variation in Solute Sources and Nutrient Cycling in Montane Headwater Catchments
2012
- Rare earth elements as reactive tracers of biogeochemical weathering in the Jemez River Basin Critical Zone Observatory
2012
- The Effect of Terrain Aspect on Interannual Variability of Hydrologic Response in Mountainous Catchments in New Mexico
2012
- Iodine-129, 87Sr/86Sr, and trace elemental geochemistry of northern Appalachian Basin brines: Evidence for basinal-scale fluid migration and clay mineral diagenesis
2012
- Glacial impacts on hydrologic processes in sedimentary basins: Evidence from natural tracer studies
2012
- Geochemical and isotopic composition of Appalachian Basin brines: origin of salinity and fingerprints of fluid reservoirs
2012
- Tracing biogeochemical processes and pollution sources with stable isotopes in river systems: Kamni{\v{s}}ka Bistrica, North Slovenia
2012
- Editorial: Geologic isolation of nuclear waste at high latitudes: the role of ice sheets
2012
- Influence of groundwater flowpaths, residence times and nutrients on the extent of microbial methanogenesis in coal beds: Powder River Basin, USA
2011
- How Water, Carbon, and Energy Drive Critical Zone Evolution: The Jemez-Santa Catalina Critical Zone Observatory
2011
- Impacts of urbanization on nitrogen cycling and aerosol, surface and groundwater transport in semi-arid regions
2011
- Comparison of fluid geochemistry and microbiology of multiple organic-rich reservoirs in the Illinois Basin, USA: Evidence for controls on methanogenesis and microbial transport
2011
- Impacts of Pleistocene glaciation on large-scale groundwater flow and salinity in the Michigan Basin
2011
- Inverse geochemical reaction path modelling and the impact of climate change on hydrologic structure in snowmelt-dominated catchments in the Southwestern USA
2011
- Impacts of urbanization on groundwater quality and recharge in a semi-arid alluvial basin
2011
- Non-linear feedbacks between climate change, hydrologic partitioning, plant available water, and carbon cycling in montane forests
2011
- Temporal and spatial dynamics of carbon and nitrogen in headwater snow-dominated catchments, Jemez Mountains, New Mexico
2011
- Arsenic and other oxyanion-forming trace elements in an alluvial basin aquifer: Evaluating sources and mobilization by isotopic tracers (Sr, B, S, O, H, Ra)
2011
- Sources and amounts of Nitrogen Deposited in Sky-Island Ecosystems
2011
- Carbon, water and weathering limitations in the semi-arid critical zone
2011
- Impacts of agricultural irrigation recharge on groundwater quality in a basalt aquifer system (Washington, USA): a multi-tracer approach
2011
- Constraining the timing of microbial methane generation in an organic-rich shale using noble gases, Illinois Basin, USA
2011
- Microbial community structure and geochemistry of the New Albany Shale (Illinois Basin) and its potential to produce biogenic methane
2010
- Assessment of basin-scale hydrologic impacts of CO sub 2 /sub sequestration, Illinois basin
2010
- Coupled hydrology and biogeochemistry of Paleocene--Eocene coal beds, northern Gulf of Mexico
2010
- C and H isotope systematics of microbial methane accumulations in coalbeds and fractured shales
2010
- Isotopically-depleted Late Pleistocene groundwater in Columbia River Basalts: evidence for recharge of Glacial Lake Missoula floodwaters?
2010
- Methanogen variations related to hydrogeochemical conditions in organic-rich shales and coals in the Illinois Basin, USA
2010
- New Albany Shale Microbiology and Geochemistry: Characterization of and Geochemical Constraints on Methane Generating Microbial Communities
2010
- Changing Precipitation Patterns or Waning Glaciers? Identifying Water Supply Vulnerabilities to Climate Change in the Bolivian Andes
2010
- Chemical and isotopic tracers of the contribution of microbial gas in Devonian organic-rich shales and reservoir sandstones, northern Appalachian Basin
2010
- Sources and Cycling of Carbon in Two Semi-Arid Catchments, Valles Caldera Preserve, NM: Insights From Carbon Isotopes
2010
- DOM as a potential tracer for in-stream processes in small mountain catchments (JRB-SCM Critical Zone Observatory)
2010
- Sr isotope constraints on natural oxy-anionic contaminants in a basin-fill aquifer (Arizona, USA)
2010
- Ice-Sheet Aquifer Interactions within the midcontinent, USA: Implications for CO2 Sequestration
2010
- Geochemical characteristics of surface waters and groundwaters in the Velenje Basin, Slovenia
2010
- Coevolution of topography, hydrology, soil development, and vegetation in sky islands of the southwestern United States
2010
- Effect of natural gas production on geochemistry and microbiology in a fractured organic-rich shale
2009
- 129I and Sr isotopes as tracers of large-scale fluid migration in the northern Appalachian Basin (USA)
2009
- Dynamics of natural system hillslope silicate weathering: coupling water transit time with REYs in solution
2009
- ISOTOPIC EVIDENCE FOR RECHARGE OF LATE PLEISTOCENE MISSOULA FLOODWATERS INTO THE COLUMBIA RIVER BASALT AQUIFERS
2009
- Using an Inverse Geochemical Reaction Path Model to Analyze the Effects of Climate Change on High-elevation Catchments in the Southern Rocky Mountains
2009
- Hydrogeochemical indicators for microbial methane in fractured black shales: case studies of the Antrim, New Albany, and Ohio shales
2008
- Activity and Extent of Carbon Dioxide and Acetate Utilizing Methanogens in Deep Organic-rich Aquifers Within the Illinois Basin, USA
2008
- Biogeochemistry of the Forest City Basin coalbed methane play
2008
- A Multi-Tracer Approach to Determine the Impacts of Agricultural Irrigation Recharge on Groundwater Sustainability in the Columbia Plateau Basalt Aquifers, Central Washington, USA
2008
- Solute Sourcing and Hydrologic Response to Monsoon Precipitation Along a Gradient of Urban Land Use
2008
- Iodine-129 of Appalachian Basin Brines: Implications for Microbial Fractionation and Fluid Migration
2008
- Effects of groundwater recharge rates and nutrient supply on metabolic pathways for coal bed methane generation in the Powder River Basin
2008
- Use of Chemical and Isotopic Tracers for Estimating Ground-Water Recharge, Flow Paths, and Residence Times in the Middle San Pedro Basin, Southeast Arizona
2008
- Investigating the source and timing of freshwater recharge into saline aquifers in the glaciated Illinois Basin
2008
- Subglacial recharge into carbonate bedrock aquifers and generation of microbial methane in adjacent organic-rich shales: southwestern Ontario, Canada
2008
- Identification of microbial and thermogenic gas components from Upper Devonian black shale cores, Illinois and Michigan basins
2008
- Chapter Five: Hydrogeochemical Indicators for Microbial Methane in Fractured Organic-Rich Shales: Case Studies of the Antrim, New Albany, and Ohio Shales
2008
- Quantifying Land Use and Land Cover Effects on Urban Runoff Water Quality.
2007
- Paleohydrologic controls on methanogenesis in organic-rich saline aquifers
2007
- Relative weathering intensity of calcite versus dolomite in carbonate-bearing temperate zone watersheds: Carbonate geochemistry and fluxes from catchments within the St. Lawrence and Danube river basins
2007
- Geochemical linkages between groundwater flow and microbial methane generation in shallow coal beds and fractured black shales—northern Gulf of Mexico and midcontinent US basins
2007
- Sources of Nitrate to Tucson, Arizona Groundwaters.
2007
- Diverse origins and timing of formation of basinal brines in the Gulf of Mexico sedimentary basin
2007
- Coal bed methane exploration in Zavala County, Texas
2007
- Pleistocene hydrology of North America: The role of ice sheets in reorganizing groundwater flow systems
2007
- Hydrochemistry of formation water with implication to diagenetic reactions in Sanzhao depression and Qijia-gulong depression of Songliao Basin, China
2006
- Are secular variations in seawater chemistry reflected in the compositions of basinal brines?
2006
- Paleowaters in Silurian-Devonian carbonate aquifers: Geochemical evolution of groundwater in the Great Lakes region since the Late Pleistocene
2006
- Reorganization of basinal-scale groundwater flow and salinity gradients during Pleistocene glaciation: Hydrologic modeling study of the Michigan Basin, paper presented at Annual Meeting
2006
- Volumetrically significant recharge of Pleistocene glacial meltwaters into epicratonic basins: Constraints imposed by solute mass balances
2005
- Geochemical evolution of Pleistocene glacial meltwaters within regional carbonate aquifer systems, Midcontinent, US
2005
- Tracing the carbon cycle using stable isotopes of carbon in the Pliocene lignite Velenje basin, Slovenia
2005
- IMPACT OF PLEISTOCENE GLACIATION ON FLUID AND SOLUTE TRANSPORT IN INTRACRATONIC SEDIMENTARY BASINS: INTEGRATIVE STUDY OF FORMATION WATER GEOCHEMISTRY AND NUMERICAL MODELING
2005
- Modeling variable-density fluid flow and solute transport in glaciated sedimentary basins
2005
- HYDROGEOCHEMICAL CONSTRAINTS ON PLEISTOCENE GLACIAL MELTWATER INVASION INTO MIDCONTINENT, US REGIONAL AQUIFER SYSTEMS: IMPACT ON SALINITY STRUCTURE AND GENERATION OF MICROBIAL GAS
2004
- Extensive microbial modification of formation water geochemistry: Case study from a Midcontinent sedimentary basin, United States
2004
- CARBONATE WEATHERING AND DIC FLUXES IN CARBONATE-BEARING LANDSCAPES, MICHIGAN AND SLOVENIA
2004
- IMPACT OF PLEISTOCENE GLACIATION ON THE HYDROGEOCHEMISTRY OF MID CONTINENT SEDIMENTARY BASINS
2003
- Active Microbial Methane Production and Organic Matter Degradation in a Devonian Black Shale
2003
- Microbial production and modification of gases in sedimentary basins: A geochemical case study from a Devonian shale gas play, Michigan basin
2003
- COMPARATIVE STUDY OF THE EFFECT OF PLEISTOCENE RECHARGE ON FORMATION WATER GEOCHEMISTRY IN THE ILLINOIS VS. MICHIGAN BASINS
2002
- Pleistocene recharge to midcontinent basins: Effects on salinity structure and microbial gas generation
2002
- MAJOR GEOCHEMICAL MODIFICATION OF FORMATION WATERS ALONG SEDIMENTARY BASIN MARGINS: ROLE OF MICROBIAL METHANOGENESIS
2001
- Hydrocarbon Oxidation in Sedimentary Basin Gas Reservoirs
2001
- Chemical and Isotopic Evidence for Pleistocene Recharge to Silurian-Devonian Aquifers, Illinois Basin
1999
- Identification of Microbial Methane Deposits Via Core Analysis
1999