# positions[].organizations[].parent[].label
Texas A&M Engineering Experiment Station (TEES)

# overview
My research interests span topics in structural geology, mineral physics, and solid earth geophysics with emphasis placed on the mechanical properties of Earth materials and the deformation mechanisms that govern rheology. Specific research topics have addressed the

plasticity, creep, and failure of minerals and rocks, examining the roles of crystalline defects, grain boundaries, interfaces, and fluids in determining macroscopic behavior. Taking an experimental approach, I have examined the effects of fluids, defect chemistry, and diffusional kinetics on mechanical behavior with current studies including the deformation of carbonates,

compactional creep of porous quartz aggregates, the role of crack healing in restrengthening rocks, and hydrolytic weakening of silicates.

# keywords[]
Numerical Inversion Of The Laplace Transform

# keywords[]
4019 Resources Engineering And Extractive Metallurgy

# keywords[]
4019 Resources Engineering And Extractive Metallurgy

# keywords[]
4019 Resources Engineering And Extractive Metallurgy

# awardsAndHonors[].label
Association of Former Students College-Level Teaching Distinguished Achievement Award, The

# publications[].label
Carbon and oxygen diffusion in calcite: Effects of Mn content and PH2O

# publications[].label
Hydrolytic weakening and penetrative deformation within a natural shear zone

# publications[].label
Hydrogen defects in -Al₂O₃ and water weakening of sapphire and alumina ceramics between 600 and 1000C -: I. -: Infrared characterization of defects

# publications[].label
Stationary and mobile hydrogen defects in potassium feldspar

# publications[].label
Accurate differential stress measurement using the molten salt cell and solid salt assemblies in the Griggs apparatus with applications to strength, piezometers and rheology

# publications[].label
Subcritical creep compaction of quartz sand at diagenetic conditions: Effects of water and grain size

# publications[].label
Plasticity and diffusion creep of dolomite

# publications[].label
STRENGTH AND ANISOTROPY OF FOLIATED ROCKS WITH VARIED MICA CONTENTS

# publications[].label
FLUID-ROCK REACTION WEAKENING OF FAULT ZONES

# publications[].label
Microstructural evolution during strain localization in dolomite aggregates

# publications[].label
BASAL SLIP AND MECHANICAL ANISOTROPY OF BIOTITE

# publications[].label
Permeability of illite-bearing shale: 2. Influence of fluid chemistry on flow and functionally connected pores - art. no. B10206

# publications[].label
Symposium probes materials science approaches in geophysics

# publications[].label
Hydrogen defects in -Al₂O₃ and water weakening of sapphire and alumina ceramics between 600 and 1000C -: II. -: Mechanical properties

# publications[].label
Quartz preferred orientations within a deformed pebble conglomerate from New Hampshire, U.S.A.

# publications[].label
Deformation microstructures in experimentally deformed Maryland diabase

# publications[].label
RHEOLOGY OF THE LITHOSPHERE - SELECTED TOPICS

# publications[].label
Subcritical compaction and yielding of granular quartz sand

# publications[].label
FOURIER-TRANSFORM INFRARED-SPECTROSCOPY DETERMINATIONS OF INTRAGRANULAR WATER-CONTENT IN QUARTZ-BEARING ROCKS - IMPLICATIONS FOR HYDROLYTIC WEAKENING IN THE LABORATORY AND WITHIN THE EARTH

# publications[].label
Fracture surface energy of the Punchbowl fault, San Andreas system.

# publications[].label
MECHANISMS OF FRACTURE PROPAGATION IN EXPERIMENTALLY EXTENDED SIOUX QUARTZITE

# publications[].label
Argon loss during deformation of micas: constraints from laboratory deformation experiments

# publications[].label
Deformation of clinopyroxenite: Evidence for a transition in flow mechanisms and semibrittle behavior

# publications[].label
Modelling poroelastic hollow cylinder experiments with realistic boundary conditions

# publications[].label
Grain growth kinetics of dolomite, magnesite and calcite: a comparative study

# publications[].label
Reply to the comment by Robert H. Doremus on "Stationary and mobile hydrogen defects in potassium feldspar"

# publications[].label
Laboratory study of hydrothermal deformation in unconsolidated St Peter quartz sand

# publications[].label
Fluids and structures in fold and thrust belts with recognition of the work of David Wiltschko

# publications[].label
Control of fluids on deformation of rocks

# publications[].label
Carbonates and intermediate-depth seismicity: Stable and unstable shear in altered subducting plates and overlying mantle.

# publications[].publisher
Proceedings of the National Academy of Sciences

# publications[].label
Solubility and diffusional uptake of hydrogen in quartz at high water pressures: Implications for hydrolytic weakening

# publications[].label
Hydrothermal deformation of granular quartz sand

# publications[].label
Dislocation creep of polycrystalline dolomite

# publications[].label
IONIC-CONDUCTIVITY OF QUARTZ - DC TIME-DEPENDENCE AND TRANSITION IN CHARGE-CARRIERS

# publications[].label
High pressure deformation experiments using solid confining media and Griggs piston-cylinder methods: Appraisal of stress and deformation in talc assemblies

# publications[].label
Deformation of Fine-Grained Quartz Aggregates by Mixed Diffusion and Dislocation Creep

# publications[].label
Carbon deposition during brittle rock deformation: Changes in electrical properties of fault zones and potential geoelectric phenomena during earthquakes

# publications[].label
DEFORMATION OF WILCOX SHALE - UNDRAINED STRENGTHS AND EFFECTS OF STRAIN-RATE

# publications[].label
The instantaneous rate dependence in low temperature laboratory rock friction and rock deformation experiments

# publications[].label
HYDROGEN SPECIATION AND CHEMICAL WEAKENING OF QUARTZ

# publications[].label
Flow strengths of quartz aggregates: Grain size and pressure effects due to hydrolytic weakening

# publications[].label
Probing the Earth's strength: Can we measure small stress at high pressure?

# publications[].label
Permeability of illite-bearing shale: 1. Anisotropy and effects of clay content and loading - art. no. B10205

# publications[].label
Deformation microstructures of Barre granite: An optical, Sem and Tem study

# publications[].label
EXPERIMENTAL DEFORMATION OF SHALE - MECHANICAL-PROPERTIES AND MICROSTRUCTURAL INDICATORS OF MECHANISMS

# publications[].label
RHEOLOGY AND DEFORMATION MECHANISMS OF AN ISOTROPIC MICA SCHIST

# publications[].label
Laboratory deformation of granular quartz sand: Implications for the burial of clastic rocks

# publications[].publisher
American Association of Petroleum Geologists AAPG/Datapages

# publications[].label
The effect of varying water contents on the creep behavior of Heavitree quartzite

# publications[].label
Plastic deformation of WCCo at high confining pressure

# publications[].label
Permeability of Wilcox shale and its effective pressure law

# publications[].label
Mechanical anisotropy of gneiss: Failure criterion and textural sources of directional behavior

# publications[].label
DISLOCATION INTERACTIONS IN EXPERIMENTALLY DEFORMED BIOTITE

# researcherOn[].label
A reversible rheology for water-weakened quartz

# researcherOn[].awardedBy.label
National Science Foundation - (Arlington, Virginia, United States)

# researcherOn[].label
Laboratory Technician Support: Enhancing Access to the John W. Handin Laboratory for Experimental Rock Deformation

# researcherOn[].awardedBy.label
National Science Foundation - (Arlington, Virginia, United States)

# researcherOn[].label
NSF: Collaborative Research: Deformation Thermometry and Water Weakening of Quartz Tectonites-Case Studies From the Himalaya

# researcherOn[].awardedBy.label
National Science Foundation - (Arlington, Virginia, United States)

# researcherOn[].label
Collaborative Research: Magnesite Deformation and Potential Roles in the Slip and Seismicity of Subduction Zones

# researcherOn[].awardedBy.label
National Science Foundation - (Arlington, Virginia, United States)

# streetAddress
Texas A&M University; Geology; 3115 TAMU

# organizations[]
Texas A&M Engineering Experiment Station (TEES)

# schools[]
Texas A&M Engineering Experiment Station (TEES)

# etdChairOf[].label
Davis, Nathan Ernest (2005-08). Experimental deformation of natural and synthetic dolomite. Master's Thesis.

# etdChairOf[].label
Fallon, Jessica Anne (2004-12). Crack healing as a function of pOH- and fracture morphology. Master's Thesis.

# etdChairOf[].label
Goodson, Kyle (2014-08). Penetrative Deformation of Dolostones during Contact Metamorphism and the Forceful Emplacement of the Tungstonia Granite, Kern Mountains, Nevada. Master's Thesis.

# etdChairOf[].label
Ulrich, Christopher A (2015-12). Deformation Mechanisms and Microstructures of Experimentally Deformed Magnesite. Master's Thesis.

# etdChairOf[].label
Unal, Ahmet (2018-05). The Effect of Deformation on Clumped Isotope Concentration in Calcite. Master's Thesis.