Sherilyn Williams-Stroud
http://www.neoterranean.com/geoscience
swstroud@ix.netcom.com
OBJECTIVE
EDUCATION
ACCOMPLISHMENTS
RESEARCH INTERESTS
EMPLOYMENT
GEOGRAPHIC AREAS OF WORK PERFORMED
COMPUTER SKILLS
SPECIALIZED TRAINING
PROFESSIONAL SOCIETY MEMBERSHIPS
PUBLICATIONS
To continue and enhance my career goal of being instrumental in providing science information and improved understanding of science in a public service context, such as a civil service appointment, or an academic teaching position. I enjoy working with highly-skilled and motivated people who are self-directed, but I also would like to be able to mentor students. The opportunity to do research is also very important.
Ph.D.,Structural Geology 1988
The Johns Hopkins University Baltimore, MD
M.A., Structural Geology 1984
The Johns Hopkins University Baltimore, MD
B.A. Geology 1981
Oberlin College Oberlin, Ohio
Concluded with geochemical modeling and sedimentological interpretations of Paradox Basin that the mineral paragenesis is well explained by factors other than a global change in seawater composition. This work turned out to remain important in the wake of a recent paradigm shift in the field, and, although originally published in 1992, is being cited again in very recently published papers.
Characterized fractures as part of an integrated reservoir evaluation team for Devonian reservoir targets in the Karachaganak field, Kazakhstan, identified poor reservoir quality and saved the Karachaganak Integrated Organization over $20 million when they followed our recommendation not to drill a well.
The results of my study of gypsum diapirism in the Zechstein Basin is one of the few papers in the literature providing information about the rheological properties of gypsum in geologic environments, and has been incorporated into the teaching materials of a short course on salt tectonics and sedimentation.
Designed a database of fracture data from the Yucca Mountain project and constructed a query tool using IDL in order to analyze fracture statistics from different types of fracture data collected over the life of the project.
Significantly impacted the organizational structure of the shared facilities of the Central Region of the U.S. Geological Survey Geologic Division while in the position of Staff Scientist for Program. Recommendations resulting from this work were implemented and contributed to a more streamlined funding mechanism for the microbeam facility. I was also part of a successful campaign to increase the understanding of the scientific and technical employees of the costs and functions of the USGS publications process.
I enjoy utilizing leading-edge computer modeling software and tools for geomechanically-based strain analyses of subsurface structures in reservoir rocks to predict sub-seismic deformation. I am interested in using calculations of the present-day stress tensor relationship with current deformation states to extrapolate the regional tectonic history. Because of its restricted stability field under geologic conditions, I want to map and analyze gypsum structures and combine the structural analysis with gypsum deformation experiments to develop analog models to scale up to deep mantle deformation processes. I am also interested in evaporite geochemistry as it relates to seawater composition through geologic time.
Senior Research Scientist (1998-present)
ChevronTexaco Exploration and Production Technology, 4800 Fournace Pl., Bellaire, TX 77401
Apply
fracture evaluation technologies and structural geologic modeling to
exploration and production efforts to better define reservoir seals
and hydrocarbon migration pathways. Work with basin, geochemical and
stratigraphic modelers to integrate fracture models and basin
structure models into basin geology interpretations. Interact with
business units to delineate necessary activities for fracture core
research program. Coordinate funding for university fracture research
consortia, track and review the results of their research,
disseminate resulting technologies to the business units. Developed fracture
prediction methods based on volume strain analysis and borehole
fracture interpretations that were used to plan additional wells in
reservoirs in the Arabian Plateau. Evaluated stress magnitudes in gas
sand reservoirs in the Sichuan Basin that are used as a basis for
understanding active tectonic stresses for use in borehole stability
calculations.
Adjunct Faculty (2000-2002)
University of Houston - Downtown, One Main Street, Houston, TX 77002
Teach
Saturday and section of the introductory physical geology course.
Customized the course around the lecture/laboratory format, and
created a web page to relay information to the students, provide them
with on line resources, and encourage them to be interested in
science for more than just satisfying a course requirement for
graduation.
Staff Scientist For Program (1996-1998)
U.S. Geological Survey, Denver Federal Center, Denver, CO 80225
Oversee internal programs of the Central Region USGS Geologic Division,
including the National Reactor Facility, National Ice Core
Laboratory, Core Research Center, Central Publications Support
Services, and the Geologic Division Microbeam Laboratory. Participate
in management meetings to facilitate planning and development, review
proposals and recommend approval for internal program projects.
Accomplish or oversee accomplishment of special internal projects
involving safety, Human Resources, and EEO issues, compiling matrixes
for Regional activities, contributions to State Fact Sheets. Helped to redesign the
funding mechanism for the microbeam laboratory and the position
description of the microbeam scientist. Chaired a committee that
developed recommendations for implementing revised cost structure for
USGS publications by publication type and priority.
Guest Faculty (July-August 1996)
Keck Geology Consortium, Carleton College, Northfield, MN 55057
Participated
in the Keck Geology Consortium field camp, environmental geophysics
project in Butte Montana. My job was to assist undergraduate (junior
-senior) level geology students with design, logistics and
field data collection for so that they would leave the field camp
with sufficient data and project organization to complete their
senior geology thesis project. As a faculty advisor, I maintained
advisory contact with students to help them complete their project
and develop a presentation for the Keck Consortium meeting for all of
the consortium projects from that year.
Research Geologist (1988-1996)
U.S. Geological Survey, Denver Federal Center, Denver, CO 80225
Yucca Mountain Project (1995-1996): Conduct mapping and collect
fracture data from surface and subsurface exposures in order to
construct structural model of volcanic tuff rocks at Yucca Mountain,
Nevada, to be used to assess site suitability for potential national
nuclear waste repository. Created fracture database used to generate
the fracture synthesis report of Yucca Mountain fracture data
required for site suitability assessment. Paradox Basin Project (1988-1995):
Conduct research in the area of
evaporite geology using petrographic analysis of salt rock drill
cores, field studies, mass balance calculations and geochemical
computer models to develop models for depositional history and brine
evolution of salt and potash deposits. Served as Commodity Specialist
for potash, bromine and iodine. Worked as team member on other
research projects, including scientific exchange project with the
Polish Geological Survey to study and compare large evaporite basins
in the U.S. and in Poland.
USGS Graduate Internship (1986-1987)
U.S. Geological Survey,National Center, Reston, VA 22092
Conduct experiments in the deformation of gypsum, make micro-structural analyses, prepare thin
sections, do photo-microscopy and other research leading to the
completion of a Ph.D. thesis.
Teaching Assistant (1985-1986)
The Johns Hopkins University, Baltimore, MD 21218
Prepare and deliver lectures and assist with
laboratory exercises in advanced undergraduate structural geology
course, microfabric analysis.
GEOGRAPHIC AREAS OF WORK PERFORMED
Arabian Plateau, Kuwait and Saudi Arabia
Basin and Range Province, Nevada, USA
Deepwater Gulf of Mexico
Guaduas Basin, Colombia
Offshore Nigeria
Paradox Basin, Colorado and Utah, USA
Pri-Caspian Basin, Karachaganak, Kazakhstan
Red River Basin, Oklahoma
Sichuan Basin, China
Broad working knowledge of Linux, Unix, and Windows operating systems.
Knowledge of Unix system administration, and familiarity with Windows networking.
Software applications used extensively include SAS, IDL, WordPerfect, Microsoft Office Suite, Adobe Illustrator, Canvas 7/8.
Familiarity with ArcInfo GIS system
Scientific computer applications used include USGS and other geochemical modeling programs, structural geology data analysis and modeling programs (gOCad and 3DMove), image log processing and interpretation programs (GeoFrame and eXpress), seismic data interpretation software (Landmark)
Programming skills in FORTRAN, SAS and IDL.
Webpage design and editing using Netscape Composer and HTML-Kit
Carbonate Rocks Short Course (USGS short course/workshop)
Introduction to Fractal Geometry with examples of applications to Geology and Hydrology (USGS short course/workshop)
Ground Water and Geologic Processes (USGS Water Resources Course 1 week)
Ground Water Concepts and Modeling (USGS Water Resources Course 2 weeks)
Introduction to DG/Unix (USGS Geologic Division Course 1 week)
Critical Reasoning in Scientific Writing (USGS sponsored seminar by Dr. Robert Frodeman)
New Methods in Structural Geology (USGS sponsored course taught by Declan DePaor and Carol Simpson 1 week)
Advanced SAS Graphics (USGS sponsored SAS software training course 1 week)
Climbing Your Own Everests (USGS sponsored management training course taught by Arlene Blum 3 days)
Earning and Sustaining Credibility in Leadership (2 day workshop by TPG/Learning Systems, Palo Alto, California)
An Introduction to Unix System Administration (Self paced video training course)
Learning IDL (3 day course to learn how to use Research Systems, Inc. interactive data language software, Boulder, Colorado)
3 D Move Introductory Training (2 day course to learn how to use 3 dimensional structural geologic modeling software, Texaco sponsored course by MidlandValley, Houston, Texas)
In Situ Stress and Rock Mechanics: Applications for the Petroleum Industry (3 day Texaco sponsored course taught by Mark Zoback of Stanford U., Houston, Texas)
Practical Salt Tectonics (2 day Texaco sponsored course taught by Mark Rowan, Houston, Texas)
Structural Balance, Restoration, and Modeling (Oil and Gas Consultants, Inc. one week course taught by Richard Groshong of U. of Alabama, Houston, Texas)
PETE 630 Geostatistics (Video/web conference course offered on site at Texaco from Texas A&M University)
Seismic Fundamentals (4 day Texaco sponsored course taught by Don Macpherson of Subsurface Consultants and Associates, LLC)
Fault Seal Analysis (3 Day Training Course given by Badley Earth Sciences, Hundleby, U.K.)
Seals: Risking Fault Seal and Top Seal (4 Day Texaco sponsored training course by Grant Skerlec of Seals International)
Applied Rock Mechanics (Oil and Gas Consultants, Inc. one week course taught by Robert Skopec through OGCI Training)
Seismic Interpretation of Compressive Structures: Canadian Rocky Mountain Foreland (5 day Texaco field course taught by Frank Bilotti (Texaco Upstream Technology) and John Shaw (Harvard University)
AAPG Bulletin Citation of Excellence for review of "Three Dimensional Visualization of the Neogene Structures of an External Sector of the Northern Apennines, Italy", May 2001
Mentoring Excellence in Technology - selection for participation as a mentee in 1 year Texaco training program, March 2000 March 2001
USGS "Star Award" for exceptional accomplishment in the job of Staff Scientist for Program in support of the reorganization of the USGS Central Region Publications Group, 1997
Sigma-Xi Grant in Aid of Research, 1984
National Science Foundation Minority Graduate Fellowship, 1982-1985
American Geological Institute Minority Participation in Earth Sciences Scholarship, 1982-1985
PROFESSIONAL SOCIETY MEMBERSHIPS
American Association of Petroleum Geologists
American Geophysical Union
Geological Society of America
National Association of Black Geologists and Geophysicists
SEPM (Society For Sedimentary Geology)
Professional Society Service Work
Co-Leader of Mini-Summit on Diversity in AAPG, AAPG Leadership Meeting, Tulsa, OK, January 2002.
AAPG Core and Sample Preservation Committee, 2000 to present
Local Chair, USGS Geologic Division Ethnic Minority Advisory Committee, 1992-1995
Convener, 1994 AAPG meeting poster session, "Geochemical and Textural Indicators of
Basin Brine Evolution in Evaporites", 1992 93
Debate Coordinator, Mini Debate Series, 1994 SEPM/AAPG Convention, "Evaporite Deposition
Is Depth the Question?"
Refereed Journal Articles
Williams, S., 1988, The
shear strength of gypsum single crystals on three cleavage planes,
Tectonophysics, v. 148, p. 163 173.
Williams Stroud, S., 1994, Evolution of an inland sea of marine origin to a non marine saline Lake: The Pennsylvanian Paradox salt deposit, SEPM Special Publication 50, p. 293 306.
Williams Stroud, S., Searls, J. P. and Hite, R. J., 1994, Potash Resources, in Industrial Minerals and Rocks, 6th Edition, Society for Mining, Metallurgy, and Exploration, Inc., p. 783 802.
Williams Stroud, S., 1994, Potash Mining Engineering (industrial Minerals 1993 annual review article), June, 1994, p. 540 542.
Williams Stroud, S., 1995, Solution to the Paradox? Results of some chemical equilibrium models and mass balance calculations as applied to the Paradox basin evaporite deposit, American Journal of Science, vol 294, p. 1189 1228.
Williams Stroud, S., and Paul, J., 1997, Initiation and growth of gypsum piercement structures in the Zechstein Basin, Journal of Structural Geology, 19 (7), p. 897 907.
Sweetkind, D. S., Anna, L. O., Williams Stroud, S. C., and Coe, J. A., (1997), Characterizing the fracture network at Yucca Mountain, Nevada, Part 1, Integration of field data for numerical simulations, Hoak, T. E., Klawitter, A. L., and Blomquist, P. K., eds., Fractured Reservoirs: Characterization and Modeling, p. 185 196.
Abstracts
Williams, S., 1986, Experimental pressure solution of gypsum, Abstract for poster session, American Association of Petroleum Geologists Annual Convention.
Williams, S., 1986, Deformation mechanisms observed during in situ deformation of gypsum, abstract for poster session, American Geophysical Union Spring Meeting.
Williams Stroud, S., 1991, The Evolution of an inland sea of Marine Origin to a non marine saline lake: The Pennsylvanian Paradox Salt Deposit, Conference on Sedimentary and Paleolimnological Records of Saline Lakes, Saskatoon, Saskatchewan, Canada, Aug. 13 16, 1991.
Herring, J.R., Piper, D.Z., Williams Stroud, S., Spirakis, C.S. and Sheppard, R.A., 1991, U.S. Geological Survey research on agricultural industrial minerals in the United States Implications for Exploration, in Good, E.E., Slack, J.F., and Kotra, R.K., eds., U.S. Geological Circular 1062, USGS Research on Mineral Resources 1991 programs and abstracts p. 38 39
Williams Stroud, S.C., 1993, Fluid inclusion evidence for multiple generations of halite crystallization in the Paradox Formation, Colorado and Utah, Geological Society of America Abstracts with Programs, 1993 Annual Meeting, Boston, MA.
Williams Stroud, S.C., and Kyser, T. K., 1994, Evolution of basin brines in the Paradox Formation, Western United States: Evidence from sedimentary textures, fluid inclusions, and stable isotopes, AAPG 1994 Annual Convention Program.
Dean, W. E., Peryt, T. M.., Czapowski, G., Paul, J., Williams Stroud, S., 1994, Comparative anatomy of large evaporite basins: The Zechstein Basin of central Europe and the Delaware Basin of Texas and New Mexico, AAPG 1994 Annual Convention Program.
Petrichenko, O., Williams Stroud, S., 1995, Chemical composition of water in the Late Carboniferous evaporite Paradox Basin (USA), XIII Carboniferous Permian Congress, Krakow, Poland.
Dean, W. E., Peryt, T. M., Czapowski, G., Williams Stroud, S., Johnson, K. S., Gasiewicz, A., 1995, Comparative anatomy of large Permian evaporite basins: the Zechstein basin of Poland and the Permian Basin of southwestern United States, XIII Carboniferous Permian Congress, Krakow, Poland.
Sweetkind, D. S., and Williams Stroud, S., 1995, Controls on the genesis of fracture networks, Paintbrush Group, Yucca Mountain, Nevada, EOS, Transactions, American Geophysical Union, 76 (46, Suppl.), p. 597, American Geophysical Union 1995 fall meeting, San Francisco, CA
Williams Stroud, S. C. and Barton, C., 2000, Stress magnitudes associated with flexural slip in a hanging wall anticline, Geological Society of America Abstracts with Programs, 32 (7).
Internal Reports and Open-File Reports
Williams, S., 1988, The shear strength of gypsum single and polycrystals and its implications for petrofabric analysis. Unpublished Ph.D. dissertation, The John Hopkins University, 152 p.
Williams Stroud, S., 1991, Descriptive model of Potash bearing bedded salt (Model 35ab(T), p. 26-28; Descriptive Model of Naturally Occurring Iodine Brines (Model 35am), p. 36-37; Descriptive Model of Naturally Occurring Bromite Brine (Model 35 am), p. 38 39; Descriptive Model of Iodine Bearing Nitrate (Model 35bl), p. 45 46; in Orris G.J., and Bliss, J.D., eds., Some Industrial Mineral Deposit Models: Descriptive Deposit Models, U.S. Geological Survey Open File Report 91 11A.
Williams Stroud, S., 1992, Potash, Saline brines and brine deposits, in Minerals and Energy Resources of the BLM Roswell Resource Area East Central New Mexico, Susan Bartsch Winkler, editor. USGS Open File Report 92 0261.
Williams Stroud, S., 1992, Potash, Saline brines and brine deposits, in Minerals and Energy Resources of the BLM Roswell Resource Area East Central New Mexico, Susan Bartsch Winkler, editor. USGS Open File Report 92 0261.
Sweetkind, D. S., and Williams Stroud, S. C., 1996, Synthesis of fracture data from the Yucca Mountain project: Administrative Report for U. S. Dept. of Energy, 91 pages and 30 figures.
In Preparation
Petrichenko, O. I., Williams Stroud, S. C., and Peryt, T. M., 2002, (submitted to Journal of Sedimentary Research) The Relationship of Brine Chemistry of the Pennsylvanian Paradox Evaporite Basin to Secular Variation in Seawater Chemistry.
Williams-Stroud, S.C., (in preparation) Fracture Modeling in the Subsurface using stress and strain analysis and 3D modeling software.