Areas of Expertise

Sandstone petrography and diagenesis, interpretation of diagenetic history by integration of petrographic, geochemical, and stratigraphic data; relationship of diagenesis to porosity, permeability, and other petrophysical properties of oil and gas reservoirs; timing of diagenesis and hydrocarbon maturation with respect to basin thermal and subsidence history


Research Locations



Research Excellence Award - Jackson School of Geosciences (2010)

Joseph C. Walter Jr. Excellence Award - Jackson School of Geosciences (2007)

A. I. Levorsen Memorial Award - Southwest Section, American Association of Petroleum Geologists (2000)

Honorable Mention, SEPM Excellence of Oral Presentation Award - AAPG-SEPM annual meeting (1996)

First Place Best Paper and A. I. Levorsen Memorial Awards - Gulf Coast Association of Geological Societies (1987)

Distinguished Lecturer - American Association of Petroleum Geologists (1986 - 1987)

First Place Best Paper and A. I. Levorsen Memorial Awards - Gulf Coast Association of Geological Societies (1986)

Participant, AAPG Hedberg Conference: Understanding, Exploring, and Developing Tight Gas Sands, American Association of Petroleum Geologists (2005)

Member, Graduate Studies Committee, Department of Geological Sciences, The University of Texas at Austin (2005)

Chair, Researchers Retreat, Bureau of Economic Geology (2005)

Chair, Clastic Diagenesis Research Group, SEPM (Society for Sedimentary Geology) (2005 - 2006)

Member, Ad Hoc Consultative Committee for the Selection of the Dean of the John A. and Katherine G. Jackson School of Geosciences, The University of Texas at Austin (2005 - 2006)

Co-Convenor, Workshop on Curation of Terrestrial Scientific Cores, Samples, and Collections, National Science Foundation (2004 - 2005)

Member, Promotions Advisory Committee, Bureau of Economic Geology (2004 - 2007)

Member, Committee on Graduate Student Admission and Support Policies in the Jackson School, Jackson School of Geosciences, The University of Texas at Austin (2003)

Convenor, American Association of Petroleum Geologists (2002)

Co-Editor, Gulf Coast Association of Geological Societies (2002)

Judge, American Association of Petroleum Geologists (2002)

Member, Soft-Rock Curriculum Committee, Department of Geological Sciences, The University of Texas at Austin (2001)

Member, Graduate Student Recruitment Committee, Department of Geological Sciences, The University of Texas at Austin (2001)

Member, Graduate Admissions and Support Committee, Department of Geological Sciences, The University of Texas at Austin (2000 - 2003)

Co-Editor, Gulf Coast Association of Geological Societies (2000 - 2001)

Co-Convenor, Diagenesis: new insights and predictive trends, technical session, 2002 Annual Meeting, American Association of Petroleum Geologists (2000 - 2001)

Co-Convenor, Advances in Clastic Diagenesis, technical session, 2002 Annual Meeting, American Association of Petroleum Geologists (1999 - 2000)

Member, Ad Hoc Consultative Committee for the Selection of the Director of the Bureau of Economic Geology, The University of Texas at Austin (1999)

Co-Convenor, Role of Fluid Flux in Diagenesis, technical session, 1999 Annual Meeting, American Association of Petroleum Geologists (1998 - 1999)

Co-Convenor, Results of Joint DOE/Industry Programs, technical session, 1997 Annual Meeting, American Association of Petroleum Geologists (1996 - 1997)

Secretary, Gulf Coast Association of Geological Societies (1994)

Member, Aid-to-Students Committee, Gulf Coast Association of Geological Societies (1994)

Associate Editor, Journal of Sedimentary Research (1993 - 2000)

Program Chairperson, 44th Annual Meeting, Gulf Coast Association of Geological Societies (1992 - 1994)

Member, representing the Sedimentary Geology Division, Joint Technical Program Committee, Geological Society of America (1992 - 1994)

Member, Nominating Committee, SEPM (Society for Sedimentary Geologists) (1992)

Member, Pettijohn Medal Selection Committee, SEPM (Society for Sedimentary Geologists) (1990 - 1991)

Convenor, session on Porosity Prediction in Siliciclastic Rocks, 1991 Annual Meeting in Dallas, American Association of Petroleum Geologists (1990 - 1991)

Member, Abstract Review Committee for Sedimentary Petrology, annual meetings, Geological Society of America (1989 - 1991)

Member, Technical Program Committee, Annual Meeting in San Antonio, Society of Economic Paleontologists and Mineralogists (1989)

Member, Grants-in-Aid Committee, American Association of Petroleum Geologists (1989 - 1994)

Member, Ad Hoc Awards and Judging Committee, Society of Economic Paleontologists and Mineralogists (1988)

Member, Credentials Committee, American Association of Petroleum Geologists (1988 - 1989)

Chairman, Awards and Judging Committee, Mid-Year Meeting, Society of Economic Paleontologists and Mineralogists (1987)

Delegate, House of Delegates, Austin Geological Society, American Association of Petroleum Geologists (1986 - 1989)

Secretary, Midcontinent Section-Society of Paleontologists and Mineralogists (1985 - 1986)

Member, Committee on Stratigraphic Correlations, American Association of Petroleum Geologists (1983 - 1985)

Curation of continental scientific cores and samples, presented at DOSECC workshop on Drilling for Deep Time Geosystems, Arlington, Virginia (2005)

Advanced reservoir geology: clastics, presented to GEO 391, co-instructor, Department of Geological Sciences, The University of Texas at Austin, Austin, Texas (2005)

Curation of continental scientific cores and samples at the Houston Research Center, presented at Bureau of Economic Geology Seminar Series, Austin, Texas (2005)

Effect of calcite cement on reservoir properties in Permian deepwater sandstones, Delaware Basin, west Texas, presented at American Association of Petroleum Geologists Annual Meeting, Calgary, Alberta, Canada (2005)

Bureau of Economic Geology-Houston Research Center, presented at NSF Workshop on Designing Interoperability for Sample-Based Data Management via the International GeoSample Number IGSN, La Jolla, California (2005)

Curation of terrestrial scientific cores, samples, and collections, presented at 2005 Geological Society of America Annual meeting, Salt Lake City, Utah (2005)

Calcite cement distribution in Permian deepwater sandstones, Delaware Basin, USA, presented at 2005 Geological Society of America Annual Meeting, Salt Lake City, Utah (2005)

A new digital atlas of major oil reservoirs in the Permian Basin, presented to the Society of Independent Professional Earth Scientists, San Antonio, Texas (2005)

Play analysis and digital portfolio of major oil reservoirs in the Permian Basin, presented to the Austin Geological Society, Austin, Texas (2004)

Play analysis and digital portfolio of major oil reservoirs in the Permian Basin, presented at Bureau of Economic Geology Seminar Series, Austin, Texas (2004)

Digital portfolio of oil plays in the Permian Basin, presented at West Texas Geological Society Fall Symposium, Midland, Texas (2004)

A new digital atlas of major oil reservoirs in the Permian Basin, presented to Permian Basin Section, SEPM, Midland, Texas (2004)

The University of Texas Bureau of Economic Geology Houston Research Center, presented to Curators of Marine and Lacustrine Geological Samples, Lamont-Doherty Earth Observatory, Palisades, New York (2004)

Petrography and reservoir quality of onshore Miocene sandstones in the Burgos Basin, Mexico, presented at Gulf Coast Association of Geological Societies Annual Meeting, San Antonio, Texas (2004)

Increasing reserves and improving oil recovery-play analysis of the Permian Basin, presented at Meeting of the Texas PTTC Producers Advisory Group (PAG) and State of Texas Policy Makers, Austin, Texas (2003)

Diagenesis and Reservoir Quality, presented at Energy, Engineering, and the Environment Workshop for PEMEX at The University of Texas at Austin, Austin, Texas (2003)

Advanced reservoir geology: clastics, presented to GEO 391, co-instructor, Department of Geological Sciences, The University of Texas at Austin, Austin, TX (2003)

Origin of calcite cement and influence on fluid flow in a deltaic sandstone, Frontier Formation, Wyoming, presented at Wyoming Geological Association 2003 Field Conference, Casper, Wyoming (2003)

Calcite cement distribution in Permian turbidite sandstones, West Texas, presented to SEPM Sandstone Diagenesis Research Group, Salt Lake City, Utah (2003)

Play analysis of major oil reservoirs in the Permian Basin, West Texas, presented at American Association of Petroleum Geologists Annual Meeting, Salt Lake City, Utah (2003)

Petrography and reservoir quality of tertiary deepwater sandstones in the Veracruz Basin, Mexico, presented to the 2002 annual meeting of the Gulf Coast Association of Geological Societies, Austin, Texas (2002)

Reservoir quality of lower Miocene sandstones in lowstand prograding wedge successions, Vermilion Block 31, offshore Louisiana, presented to the 2002 annual meeting of the Gulf Coast Association of Geological Societies, Austin, Texas (2002)

Transfer of private geologic data to the public domain, presented to National Academy of Sciences Symposium on the Role of Scientific and Technical Data and Information in the Public Domain, Washington, D.C. (2002)

Influence of calcite cement on fluid flow in reservoirs, presented to Department of Geological Sciences, Petrology of Sandstones (Geology 383L), The University of Texas at Austin, Austin, Texas (2001)

Diagenetic impacts on clastic reservoirs, presented to Reservoir Geology and Advanced Recovery (Geology 383R), Department of Geological Sciences, The University of Texas at Austin, Austin, Texas (2001)

Diagenesis and Reservoir Quality of Deep-Water Sandstones in the East Ford Field, Bell Canyon Formation, Delaware Basin, Texas, The University of Texas at Austin, Bureau of Economic Geology, Austin, TX (2001)

Diagenesis and reservoir quality of turbidite sandstones in the Bell Canyon Formation, Delaware Basin, Texas, presented at 2001 Geological Society of America Annual Meeting, Boston, Massachusetts (2001)

Deposition and diagenesis of turbidite sandstones in East Ford field, Bell Canyon Formation, Delaware Basin, Texas, presented to the Southwest Section, American Association of Petroleum Geologists Annual Convention, Dallas, Texas (2001)

Field development of a Permian deep-water sandstone, East Texas field, Bell Canyon Formation, Delaware Basin, Texas, presented at the American Association of Petroleum Geologists Annual Convention, Denver, Colorado (2001)

Geology of the "Canyon" tight gas sand trend, Val Verde Basin, Texas, presented to the Friends of Gas, Oil, and Agriculture, San Angelo, TX (2001)

Reservoir characterization of a Permian deep-water sandstone, East Ford field, Bell Canyon Formation, Delaware Basin, Texas, presented to the South Texas Geological Society, San Antonio, TX (2001)

Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and basin clastic reservoirs, West Texas (Delaware Basin): project results, presented to U.S. Department of Energy, National Petroleum Technology Office, Tulsa, Oklahoma (2001)

Outcrop Characterization of Diagenetic Heterogeneity in Deltaic Reservoir Analogs, Bureau of Economic Geology research seminar, The University of Texas at Austin, Austin, Texas (2000)

The rock family, Bureau of Economic Geology research seminar, The University of Texas at Austin, Austin, Texas (2000)

Calcite-cement distribution and its effect on fluid flow in a deltaic sandstone, Frontier Formation, Wyoming, USA, presented at Department of Geological Sciences Soft-Rock Seminar, The University of Texas at Austin, Austin, Texas (2000)

Outcrop characterization of reservoir quality and interwell-scale cement distribution in a tide-influenced delta, Frontier Formation, Wyoming, USA, presented at Department of Geosciences Technical Sessions, Texas Tech University, Lubbock, Texas (2000)

CO2 flooding of Delaware sandstones, Permian Basin, lessons learned from East Ford field, workshop sponsored by the Permian Basin Petroleum Association, Midland, Texas (2000)

Characterization of reservoir heterogeneity in slope and basin clastic reservoirs, Bell Canyon Formation, Delaware Basin, Texas, presented to the Southwest Section, American Association of Petroleum Geologists, Midland, Texas (2000)

Expansion of gas reservoir data base, presented at the West Texas Geological Society Annual Fall Meeting, Midland, Texas (2000)

Calcite cement distribution and its effect on fluid flow in a deltaic sandstone, Frontier Formation, Wyoming, USA, presented at the American Association of Petroleum Geologists Annual Convention, New Orleans, Louisiana (2000)

Invited Talk, Characterization and development of turbidite reservoirs in a deepwater channel-levee and lobe system, Ford Geraldine Unit, Permian Bell Canyon Formation, Delaware Basin, USA, presented at the EAGE/AAPG Third Research Syposium on Developing and Managing Turbidite Reservoirs, (1999)

New techniques for using old geophysical logs in reservoir characterization: examples from Bell Canyon sandstones, Ford Geraldine and East Ford units, Delaware Basin, Texas, presented to the DOE Oil & Gas Conference Technology Options for Producer Survival, Dallas, TX (1999)

Controls on reservoir quality distribution in the Ramsey sandstone deep-marine clastic reservoirs, Bell Canyon Formation, Delaware Basin, Texas, presented at the American Association of Petroleum Geologists Annual Convention, San Antonio, Texas (1999)

Incorporation of core data into reservoir characterization of a deep-water channel-levee and lobe deposit, Ford Geraldine unit, presented to the Sixth Archie Conference, (1998)

Outcrop characterization of reservoir quality and interwell-scale cement distribution in a tide-influenced delta, Frontier Formation, Wyoming, USA, presented at the conference "Mineral Diagenesis and Reservoir Quality-The Way Forward," sponsored by the Clay Minerals Group (Mineralogical Society), Cambridge, England (1998)

Ramsey sandstone deep-water channel-levee and lobe deposits, Ford Geraldine unit, Reeves and Culberson Counties, Texas, presented at the Permian Basin Section SEPM core workshop "DOE Funded Reservoir Characterization Projects", Midland, Texas (1998)

Ramsey sandstone channel-levee and lobe deposits: deep-marine clastic reservoirs in the Bell Canyon Formation, Delaware Basin, Texas, presented at the American Association of Petroleum Geologists Annual Convention, Salt Lake City, Utah (1998)

Geoscience Colloquium, Reservoir characterization of a deep-water channel-levee and lobe system, Bell Canyon Formation, Ford Geraldine Unit, West Texas (Delaware Basin), presented to Texas Tech University, (1997)

Continuing Education Short Course, Reservoir Characterization of Permian Deep-Water Sandstones, Bell Canyon Formation, Geraldine Ford Area, West Texas (Delaware Basin), Introduction to the Technology Transfer Workshop, Reservoir Characterization of Gerald, West Texas Geological Society, (1997)

Workshop Reservoir Characterization of Ford Geraldine Unit: Permian Bell Canyon Formation, Delaware Basin, Introduction to the workshop and field trip and Reservoir characterization of Geraldine Ford field, BEG/DOE/STARR/PTTC, (1997)

Reservoir characterization of channel-levee and lobe deposits, Bell Canyon Formation, Geraldine Ford field, West Texas (Delaware Basin), presented at the Bureau of Economic Geology Seminar, Austin, TX (1997)

Reservoir characterization of Permian deep-water Ramsey Sandstones, Bell Canyon Formation, Ford Geraldine Unit, West Texas (Delaware Basin), presented at the American Association of Petroleum Geologists Annual Convention, Dallas, Texas (1997)

Application of advanced reservoir characterization to Ramsey Sandstone reservoirs, Ford Geraldine Unit, West Texas (Delaware Basin), presented at the annual fall meeting of the West Texas Geological Society, Midland, Texas (1997)

Depositional history of Ramsey sandstone channel-levee and lobe deposits, Bell Canyon Formation, Ford Geraldine Unit, West Texas (Delaware Basin), presented at the annual fall meeting of the West Texas Geological Society, Midland, Texas (1997)

Permeability Structure and Heterogeneity Style Industrial Associates Program for Fluvial-deltaic Reservoirs, presented to visiting Instituto Mexicano Del Petroleo (IMP) Geologists, (1996)

Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and basin clastic reservoirs, West Texas (Delaware Basin), presented at the DOE Workshop "Improving Production in Shallow Shelf Carbonate (Class II) Reservoirs", Midland, Texas (1996)

Portability of outcrop permeability data to subsurface reservoirs: diagenetic complications, presented at the American Association of Petroleum Geologists Annual Convention, San Diego, California (1996)

Recovering remaining Texas Oil Resources, presented to Westminster Manor Men's Club, (1995)

Interpreting the timing of compaction and quartz cementation in the Lower Cretaceous Fall River Formation, Wyoming and South Dakota, presented to The University of Texas Department of Geological Sciences Soft Rock Seminar, (1995)

Interpretation of compaction and quartz cementation processes from integrated petrographic and burial-history analyses, Lower Cretaceous Fall River Formation, Wyoming and South Dakota, presented at the American Association of Petroleum Geologists Annual Convention, Houston, Texas (1995)

Characterization of heterogeneity style and permeability structure in fluvial-deltaic reservoirs deposited in a low-accommodation setting, presented at the American Association of Petroleum Geologists International Meeting, Nice, France (1995)

Outcrop characterization of stratal architecture and permeability structure in deltaic-reservoir analogs, presented at the Conference on Quantification and Modelling of Spatial Patterns in Permeable Rocks, The Institute of Mathematics and Its Applications, Scarborough, England (1995)

Workshop, Geology and Production Aspects of a Stratigraphically Complex Natural Gas Play: Canyon Sandstone, Val Verde Basin, Perspective on tight gas sands: geological characteristics of major low-permeability sandstone gas reservoirs in the continental U, GRI/WTGS/BEG, (1994)

Technical Sessions, Early, methanic-zone precipitation of siderite cement in submarine-fan sandstones, Val Verde Basin, Texas, presented to The University of Texas Department of Geological Sciences, (1994)

Influence of early siderite cementation on reservoir quality in Sonora Canyon sandstones, presented at the Bureau of Economic Geology Seminar, (1994)

Projetos do Bureau of Economic Geology, University of Texas - caracterizacao de reservatorios em sisteas fluvio-deltaicos, presented at Petrobras DEBAR office, (1994)

Reservoir characterization projects at the Bureau of Economic Geology: examples and approaches, presented at Petrobras Research Lab (CENPES), (1994)

Gulf of Mexico Sedimentary Basin Seminar (Geology 391), Diagenesis on Lower Cretaceous Travis Peak Formation, East Texas Basin, presented at the Department of Geological Sciences, The University of Texas at Austin, (1994)

U.S. Economic and Trade Policy Program for Latin American Journalists, Joint Bureau of Economic Geology - Petrobras Study of the Acu Formation, Brazil, presented at the Bureau of Economic Geology, (1994)

Depositional versus diagenetic controls on permeability, Lower Cretaceous Fall River Formation in outcrop and subsurface, Wyoming and South Dakota, presented at the Bureau of Economic Geology seminar, (1994)

Compositional, textural, and diagenetic controls on porosity distribution and evolution in Permian Tirrawarra Sandstone, Cooper Basin, South Australia, presented at the American Association of Petroleum Geologists Annual Convention, Denver, Colorado (1994)

Porosity preservation by early siderite cementation in Canyon Sandstones, Val Verde Basin, West Texas, presented at Baylor University Geology Department, (1993)

Oil and Gas Reservoir Characterization Research at the Bureau of Economic Geology, Texas, presented at the First Annual Historically Black Colleges and Universities / Private Sector / Fossil Energy Research and Development Technology Transfer Symposium, (1993)

Geology of major low-permeability sandstone gas reservoirs in the continental United States, presented at the Geological Society of America Annual Meeting, Boston, Massachusetts (1993)

Porosity preservation by early siderite cementation in Sonora Canyon sandstones, Val Verde Basin, southwest Texas, presented at the American Association of Petroleum Geologists Annual Convention, New Orleans, Louisiana (1993)

Influence of provenance and burial history on diagenesis of the Frontier Formation, Green River Basin, Wyoming, presented at the Bureau of Economic Geology Seminar, (1992)

Geologic controls on reservoir properties of low-permeability sandstone, Travis Peak Formation, East Texas, presented at the Shreveport Geological Society, (1992)

Late-stage diagenesis and development of secondary porosity in Frontier Formation low-permeability sandstones, Green River Basin, Wyoming, USA, presented at the American Association of Petroleum Geologists Annual Convention, Calgary, Canada (1992)

Interaction of burial history and diagenesis of the Upper Cretaceous Frontier Formation, Moxa Arch, Green River Basin, Wyoming, presented to the Rocky Mountain Section, American Association of Petroleum Geologists Annual Meeting, Casper, Wyoming (1992)

Natural gas reserves, supply, and demand: An assessment of the natural gas resource base of the United States, presented to the Commercial and Industrial Space Conditioning Alternatives Seminar, (1991)

Integrated geological characterization of low-permeability ("tight gas") sandstone reservoirs, presented to the Forum on Improved Oil & Gas Recovery sponsored by TIPRO and the Bureau of Economic Geology, (1991)

Geologic controls on reservoir properties of Frontier Formation low-permeability gas reservoirs, Moxa Arch, Wyoming, presented at the Society of Petroleum Engineers Low Permeability Reservoir Symposium, Denver, Colorado (1991)

Depositional, diagenetic, and structural controls on reservoir properties of low-permeability sandstone, Travis Peak Formation, East Texas, presented at the Gulf Coast Association of Geological Societies Annual Meeting, Houston, Texas (1991)

Tight Gas Sands Program-Frontier Formation Workshop, Geology of the Frontier Formation, Gas Research Institute, (1990)

Diagenesis of Frontier tight gas sandstones, presented at Bureau of Economic Geology Seminar, (1990)

Variations in diagenesis and reservoir quality in the Frontier Formation along the Moxa Arch, Green River Basin, Wyoming, presented to the Rocky Mountain Section, American Association of Petroleum Geologists Annual Meeting, Denver, Colorado (1990)

Geology of the Travis Peak Formation and Cotton Valley Group, East Texas, workshop sponsored by the Gas Research Institute, Houston, Texas (1990)

Episodic quartz cementation in the Lower Cretaceous Travis Peak Formation, East Texas, presented at the American Association of Petroleum Geologists Annual Meeting, San Francisco, California (1990)

Geology of the Travis Peak Formation and Cotton Valley Group, East Texas, workshop sponsored by the Gas Research Institute, Tyler, Texas (1990)

Cementation and burial history of a low-permeability quartzarenite, Lower Cretaceous Travis Peak Formation, East Texas, presented to the University of New Orleans, (1989)

Depositional and Diagenetic Controls on Permeability Distribution in the Lower Cretaceous Travis Peak Formation, East Texas, presented to the Shreveport Chapter, Society of Professional Well Log Analysts, (1989)

Controls on permeability distribution in Lower Cretaceous Travis Peak Formation, East Texas, presented at the American Association of Petroleum Geologists Annual Meeting, San Antonio, Texas (1989)

Control on permeability distribution in the Lower Cretaceous Travis Peak Formation, East Texas, presented at Bureau of Economic Geology Seminar, (1988)

Depositional and diagenetic controls on permeability distribution in the Lower Cretaceous Travis Peak Formation, East Texas, presented to The University of Texas at Austin, Department of Geological Sciences Soft Rock Seminar, (1988)

Regional diagenetic studies: an approach to paleohydrology and basin evolution, presented at the Colorado School of Mines Workshop on Quantitative Dynamic Stratigraphy, Deckers, Colorado (1988)

Stratigraphic and depth variations in authigenic cement distribution, Lower Cretaceous Travis Peak Formation, East Texas, presented at the Geological Society of America Annual Meeting, Denver, Colorado (1988)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to the University of Alabama, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to Panhandle Geological Society, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to Austin Geological Society, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to Ball State University, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to Illinois Geological Society, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to Louisiana State University, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to Notre Dame University, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to Ohio State University, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to Pittsburgh Geological Society, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented at Southern Illinois University, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to Texas A&M University, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to The University of Texas at El Paso, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to University of Akron, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to University of Cincinnati, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to University of Illinois, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented at University of Kentucky, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented at University of Missouri at Rolla, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to University of Oklahoma, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to University of Rochester, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to Vanderbilt University, (1987)

American Association of Petroleum Geologists 1986-1987 Distinguished Lecture Program, Diagenetic history of Pennsylvanian fan-delta arkosic sandstones, Anadarko Basin: geochemistry, paleohydrology, and reservoir quality, presented to Washington University, (1987)

Petrography and diagenesis of the Lower Cretaceous Travis Peak (Hosston) Formation, East Texas, presented to Shreveport Geological Society, (1987)

Petrography and diagenesis of the Lower Cretaceous Travis Peak (Hosston) Formation, East Texas, presented to East Texas Geological Society, (1987)

Petrography and diagenesis of the Lower Cretaceous Travis Peak (Hosston) Formation, East Texas, presented to Friends of the Mesozoic, (1987)

Diagenesis and burial history of the Lower Cretaceous Travis Peak sandstone, East Texas, presented at the American Association of Petroleum Geologists Annual Meeting, Los Angeles, California (1987)

Organic geochemistry of Lower Cretaceous Travis Peak Formation, East Texas Basin, presented at the Gulf Coast Association of Geological Societies Annual Meeting, San Antonio, Texas (1987)

School on Fundamentals of Petroleum Engineering for employees of Schlumberger, Travis Peak (Hosston) Formation, East Texas, sponsored by The University of Texas at Austin, Department of Petroleum Engineering, (1986)

Technical sessions, Diagenesis and burial history of the Lower Cretaceous Travis Peak Formation, East Texas, presented to The University of Texas at Austin, Department of Geological Sciences, (1986)

Diagenesis and burial history of Travis Peak sandstones, presented at Bureau of Economic Geology Seminar, (1986)

Pore characterization by scanning electron microscope of low-permeability gas sandstones, Travis Peak Formation, East Texas, presented at the American Association of Petroleum Geologists Annual Meeting, Atlanta, Georgia (1986)

Petrography and diagenesis of Lower Cretaceous Travis Peak (Hosston) Formation, East Texas, presented at the Gulf Coast Association of Geological Societies Annual Meeting, Baton Rouge, Louisiana (1986)

Depositional and diagenetic controls on reservoir quality in tight sandstones of the Travis Peak (Hosston) Formation, East Texas, presented at the Society of Petroleum Engineers Unconventional Gas Technology Symposium, Louisville, Kentucky (1986)

Core workshop, Travis Peak (Hosston) Formation, East Texas, Shreveport Geological Society, (1985)

Diagenesis of Travis Peak sandstones, presented at Bureau of Economic Geology Seminar, (1985)

The Travis Peak (Hosston) Formation of East Texas and North Louisiana, presented at the Society of Petroleum Engineers/DOE Joint Symposium on Low Permeability Reservoirs, Denver, Colorado (1985)

Geological evolution of the Palo Duro Basin: Pennsylvanian to Lower Permian, presented at Permian Basin Section SEPM Symposium "The Geological Evolution of the Permian Basin", Midland, Texas (1984)

Abandoned oil fields of Texas Gulf Coast, presented at the American Association of Petroleum Geologists Annual Meeting, San Antonio, Texas (1984)

Pennsylvanian fan-delta deposition, Mobeetie field, Texas Panhandle, presented to the Panhandle Geological Society, (1983)

Palo Duro Basin, an exploration frontier in the Texas Panhandle, presented at the American Association of Petroleum Geologists Annual Meeting, Dallas, Texas (1983)

Meteoric diagenesis of Pennsylvanian arkosic sandstones, southwestern Anadarko Basin, presented at the Geological Society of America Annual Meeting, Indianapolis, Indiana (1983)

Core Workshop on Depositional and Diagenetic Spectra of Evaporites, Formation and diagenesis of salt-dome cap rock, Texas Gulf Coast, Society of Economic Paleontologists and Mineralogists, (1982)

Technical sessions, Meteoric water versus formation water origin of salt dome cap rock, presented to The University of Texas at Austin, Department of Geological Sciences, (1982)

Pennsylvanian fan-delta carbonate deposition, Mobeetie field, Texas Panhandle, presented at Fort Worth Geological Society, (1982)

Facies control of cementation and porosity in Pennsylvanian fan-delta sandstones, Texas Panhandle, presented at the American Association of Petroleum Geologists Annual Meeting, Calgary, Canada (1982)

Pennsylvanian fan-delta and carbonate deposition, Mobeetie field, Texas Panhandle, presented at Oklahoma City Geological Society, (1981)

Combination structural and stratigraphic traps in Pennsylvanian granite wash, Mobeetie field, Anadarko Basin, presented at Permian Basin Section SEPM, (1981)

Diagenesis of Pennsylvanian fan-delta sandstones and interbedded shelf carbonates, Texas Panhandle, presented at the Geological Society of America Annual Meeting, Cincinnati, Ohio (1981)

Geochemistry of hydrocarbon source rocks, Palo Duro Basin, Texas, presented at the Southwest Section American Association of Petroleum Geologists Annual Meeting, El Paso, Texas (1981)

Pennsylvanian fan-delta deposition, Mobeetie field, Texas Panhandle, presented at the American Association of Petroleum Geologists Annual Meeting, San Francisco, California (1981)

Depositional systems and hydrocarbon resource potential of the Pennsylvanian System, Palo Duro Basin, presented at North Texas Geological Society, (1980)

Source rock quality and thermal maturity, Palo Duro Basin, Texas, presented at the American Association of Petroleum Geologists Annual Meeting, Denver, Colorado (1980)

Cap-rock formation and diagenesis, Gyp Hill Salt Dome, South Texas, presented at the Gulf Coast Association of Geological Societies Annual Meeting, Lafayette, Louisiana (1980)

Depositional systems and hydrocarbon resource potential of the Pennsylvanian System, Palo Duro Basin, Texas Panhandle, presented at Abilene Geological Society, (1979)

Depositional systems and hydrocarbon resource potential for the Pennsylvanian System, Palo Duro Basin, Texas Panhandle, presented at the West Texas Geological Society, (1979)

Depositional models and resource potential, Pennsylvanian System, Palo Duro Basin, Panhandle, Texas, presented to the Southwest Section, American Association of Petroleum Geologists Annual Meeting, Fort Worth, Texas (1979)

Facies patterns and depositional models, Pennsylvanian System, Palo Duro Basin, Texas Panhandle, presented at the American Association of Petroleum Geologists Annual Meeting, Houston, Texas (1979)

Alternating clastic-carbonate deposition in fan delta systems, Lower Pennsylvanian, Palo Duro Basin, presented to the South-Central Section, Geological Society of America Annual Meeting, Mountain View, Arkansas (1979)

Pennsylvanian fan delta sandstones of the Palo Duro Basin, Texas, presented to the Mid-Continent Section, American Association of Petroleum Geologists Annual Meeting, Tulsa, Oklahoma (1979)

Depositional models and resource potential, Pennsylvanian System, Palo Duro Basin, Panhandle Texas, presented at Abilene Geological Society, (1978)

Depositional models and resource potential, Pennsylvanian System, Palo Duro Basin, Panhandle Texas, Panhandle Geological Society, (1978)

Diagenesis and porosity distribution in deltaic sandstone, Strawn Series (Pennsylvanian), North-Central Texas, presented at the Gulf Coast Association of Geological Societies Annual Meeting, Austin, Texas (1977)