Dr. Stacy Atchley

• Petroleum Geology

• Sequence Statigraphy

Dr. Atchley joined the faculty of Baylor University in 1995 after seven years in the petroleum industry. Following a summer internship with Mobil's Offshore Division in 1985, Dr. Atchley joined Exxon Company, U.S.A. where he was employed for two years as a production geologist in Midland, Texas. After completion of his Ph.D. in 1990 at the University of Nebraska, Dr. Atchley was transferred to Exxon Production Research Company (Carbonate Reservoir Analysis section). During his seven year affiliation with Exxon, Dr. Atchley was involved in sequence stratigraphic and reservoir quality studies of Mesozoic and Paleozoic strata in China, Canada, France, onshore Gulf of Mexico, Oklahoma, and west Texas. At Baylor University, Dr. Atchley coordinates the Applied Petroleum Studies program (with an emphasis on sequence stratigraphic applications), and co-coordinates the Studies in Sedimentary and Paleoclimatic Evolution research area (with Drs. Driese, Nordt and Dworkin). A chronology of Dr. Atchley's professional experience is summarized below.

Professor and Interim Chair, Baylor University (Department of Geology). Coordinator for the Applied Petroleum Studies program and collaborator within the Terrestrial Paleoclimate Research Group, Fall 2010.

Professor and Associate Chair, Baylor University (Department of Geology). Coordinator for the Applied Petroleum Studies program and collaborator within the Terrestrial Paleoclimate Research Group, 2008 to present.

Associate Professor and Graduate Program Director, Baylor University (Department of Geology). Coordinator for the Applied Petroleum Studies program and collaborator within the Terrestrial Paleoclimate Research Group, 2001 to 2008.

Assistant Professor, Baylor University (Department of Geology). Coordinator for the Applied Petroleum Studies program, and collaborator within the Terrestrial Paleoclimate Research Group, 1996 to 2001.

Geological Advisor, Advantage Energy Services, Ltd . Part-time appointment in conjunction with Baylor's Applied Petroleum Studies program. 1996 to 2001.

Group Leader and Research Project Leader, Exxon Production Research Company, Carbonate Reservoir Architecture Section. Responsibilities included coordination of 10 Ph.D.-level research staff members, design and implementation of 1994 to 1996 research plans and research application projects, training of Exxon affiliate personnel, and coordination of the 1995 Exxon Corporation Carbonate Exploitation and Exploration Symposium. 1994 to 1995.

Senior Research Geologist, Exxon Production Research Company, Carbonate Reservoir Architecture and Characterization Section. Duties included design and completion of research application projects, and training of Exxon affiliate personnel. 1990 to 1994.

Production Geologist, Exxon Company, U.S.A., Southwestern Division. Responsible for reservoir surveillance, and development and outpost prospecting within Permian (Guadalupian) strata of the Exxon-operated Means San Andres and Queen Units. 1986 to 1988.

Production Geology Intern, Mobil Producing Texas and New Mexico. Worked Miocene development potential within offshore Texas, Brazos block 386-S. Summer and Fall, 1985.

Graduate Sequence Stratigraphy fieldcourse 2006 group photo, Canyonlands National Park.

Dr. Atchley's upper-level course offerings at Baylor University include Field Stratigraphy and Sedimentology, Carbonate and Clastic Depositional Systems, Graduate Stratigraphy (Applied Sequence Stratigraphy), Petroleum Geology, and Advanced Studies in Petroleum Geology. All courses emphasize tools and techniques that allow interpretation of the stratigraphic controls on reservoir quality and distribution.

Related courses taught by colleagues include Subsurface Mapping Methods and 3-D Seismic Interpretation, both taught by Dr. John Dunbar, and Exploration Seismology, taught by Dr. Tom Goforth.

Dr. Atchley and students at Triassic Chinle Formation outcrops, north-central New Mexico.

•Sequence stratigraphic applications to petroleum recovery.

•Sequence stratigraphic interpretation of Mesozoic and Paleozoic carbonate or mixed carbonate and siliciclastic platform complexes.

•Integration of sequence stratigraphy and paleo pedology in the reconstruction of Mesozoic environments and climates (i.e., Studies in Sedimentary and Paleoclimatic Evolution).

Ramezani, J., G.D. Hoke, D.E. Fastovsky, S.A. Bowring, F. Therien, S.I. Dworkin, S.C. Atchley, and L.C. Nordt, 2011, High-precision U-Pb geochronology of the Late Triassic Chinle Formation, Petrified Forest National Park (Arizona, USA): temporal constraints on the early evolution of dinosaurs: Geological Society of America Bulletin, TBA.

Atchley, S.C., Nordt, L.C., Dworkin, S.I., Cleveland, D.M., Mintz, J.S., and Harlow, H., accepted, Alluvial stacking pattern analysis and sequence stratigraphy: concepts and case studies, in, Driese, S.G., and Nordt, L.I., eds., New Frontiers in Paleopedology and Terrestrial Paleoclimatology: SEPM Special Publication no. TBA.

Trendell, A.M., Atchley, S.C., and Nordt, L.C., in press, Depositional and diagenetic controls on reservoir attributes within a fluvial outcrop analog: Upper Triassic Sonsela Member of the Chinle Formation, Petrified Forest National Park, Arizona: American Association of Petroleum Geologists Bulletin.

Atchley, S.C., Nordt, L.C., Dworkin, S.I., Trendell, A.M., and Cleveland, D.M., 2010, Alluvial sequence stratigraphy of the late Triassic Chinle Formation at Petrified Forest National Park, Arizona, in Program Volume for SEPM-NSF Workshop "Paleosols and Soil Surface Analog Systems", September 21-26, 2010, Petrified Forest National Park, AZ", p. 31-43.

Driese, S.G., Nordt, L.C., and Atchley, S.C., 2010, Stop Five: Micromorphology and paleoclimatologic significance of Mountain Lion Mesa "silcrete" and underlying paleosols, in Program Volume for SEPM-NSF Workshop "Paleosols and Soil Surface Analog Systems", September 21-26, 2010, Petrified Forest National Park, AZ", p. 111-122.

Nordt, L.C., Atchley, S.C., and Dworkin, S.I., 2010, Paleosols of the Blue Mesa and Sonsela Members of the Chinle Formation in the Petrified Forest National Park, Arizona: Importance, methods and assumptions, in Program Volume for SEPM-NSF Workshop "Paleosols and Soil Surface Analog Systems", September 21-26, 2010, Petrified Forest National Park, AZ", p. 45-49.

Nordt, L.C., Atchley, S.C., and Dworkin, S.I., 2010, Stops Six and Seven: Lions and Flats Paleoseries: Paleo-Vertisols, rhizohalos and carbonate rhizocretions, in Program Volume for SEPM-NSF Workshop "Paleosols and Soil Surface Analog Systems", September 21-26, 2010, Petrified Forest National Park, AZ", p. 123-130.

Nordt, L.C., Trendell, A., Atchley, S.C., and Dworkin, S.I., 2010, Tepees and Metas Paleoseries – A well-grained/gleyed paleo-Vertisol sequence, in Program Volume for SEPM-NSF Workshop "Paleosols and Soil Surface Analog Systems", September 21-26, 2010, Petrified Forest National Park, AZ", p. 73-81.

Sankey, J.T., S.C. Atchley, L.C. Nordt, S.G. Driese, S.I. Dworkin, N. Longrich, H. Fricke, 2010, Paleosol evidence for Late Cretaceous paleoenvironments of west Texas: implications for terrestrial biogeography and biodiversity, in Titus, A., ed., The Late Cretaceous of Southern Utah: Critical Window into End Mesozoic Ecosystems, Cretaceous Field Conference, Indiana University Press, Bloomington, Indiana.

Atchley, S.C., N.H. Ball and L.E. Hunt, 2010, Reservoir characterization and facies prediction within the Late Cretaceous Doe Creek Member, Valhalla Field, west-central Alberta, Canada: Bulletin of the American Association of Petroleum Geologists, v. 94, p. 1-25.

Cleveland, D. M., L. C. Nordt, S. I. Dworkin, and S. C. Atchley, 2008, Pedogenic carbonate isotopes as evidence for extreme climatic events preceding the Triassic-Jurassic boundary: implications for the biotic crisis: Geological Society of America Bulletin, v. 120, p. 1408-1415.

Atchley, S. C., D. M. Cleveland, and L. W. West, 2008, A case for renewed development of a mature gas field: the Devonian Swan Hills Formation at Kaybob South Field, Alberta, Canada: Bulletin of Canadian Petroleum Geology, v. 56, p. 165-190.

Cleveland, D. M., L. C. Nordt, and S. C. Atchley, 2008, Paleosols, trace fossils, and precipitation estimates of the uppermost Triassic strata in northern New Mexico: Palaeogeography, Palaeoclimatology, Palaeoecology, 257(4), p. 421-444.

Cleveland, D. M., S. C. Atchley, L. C. Nordt, 2007, Allo- and Autocyclic origins of paleosol-bearing alluvial successions: the Triassic (Norian-Rhaetian) Chinle strata, northern New Mexico: Journal of Sedimentary Research, v. 77, p. 909-924.

Atchley, S. C., L.W. West, J. R. Sluggett, 2006, Reserves growth in a mature oil field: the Devonian Leduc Formation at Innisfail field, south-central Alberta, Canada: Bulletin of the American Association of Petroleum Geologists, v. 90, p. 1153-1170.

Prochnow, S. J., S. C. Atchley, L. C. Nordt, M. Hudec, and T. Boucher, 2006, The influence of salt withdrawal subsidence on paleosol maturity and cyclic fluvial deposition in the Triassic Chinle Formation: Castle Valley, Utah: Sedimentology, v. 53, p. 1319-1345.

Dhillon, R.S., Mintz, J.S., and Atchley, S.C., 2011, Influence of climate and the expansion of C4 grasses on sequence-scale cyclicity and landscape development during the Late Miocene to Pleistocene of west Texas. 2011 GSA Annual Meeting and Exposition (9-12 October 2011). Abstracts.

LeBlanc, S., Dworkin, S.I., Atchley, S., and Nordt, L., 2011, Reconstructing Late Triassic environmental conditions using paleosol mineral assemblages from the Chinle Formation, Arizona, USA. 2011 GSA Annual Meeting and Exposition (9-12 October 2011). Abstracts.

Dworkin, S.I., Nordt, L., and Atchley, S., 2011, Carbon isotope ratios in bulk organic matter from paleosols of the Late Triassic Chinle Formation, Petrified Forest National Park, Arizona, USA. 2011 GSA Annual Meeting and Exposition (9-12 October 2011). Abstracts.

Mintz, J.S., Driese, S.G., Harlow, R.H., and Atchley, S.C., 2011, Middle Devonian landscapes, climates and the correlation of continental strata in the northern Appalachian Basin. Northeastern (46th Annual) and North-Central (45th Annual) Joint Meeting (20-22 March, 2011). Abstracts.

Atchley, S.C., and McCarthy, P.J., 2010, Pedologic approaches to alluvial sequence stratigraphy: oral presentation at SEPM-NSF workshop "Paleosols and Soil Surface Analog Systems", Holbrook, AZ, September 25, 2010.

Hunt, L.E., Atchley, S.C., and Ball, N.H., 2010, Sequence stratigraphic and depositional controls on reservoir continuity within the Cretaceous Doe Creek Member of the Kaskapau Formation, Valhalla Field, Alberta, Canada. 2010 CSPG Meeting Abstracts with Programs.

Ball, N.H., Atchley, S.C., and Hunt, L.E., 2010, Depositional and diagenetic controls on reservoir quality and their petrophysical prediction within the Upper Cretaceous Doe Creek Member of the Kaskapau Formation at Valhalla Field, northwest Alberta, Canada. 2010 CSPG Meeting Abstracts with Programs.

Trendell, A.M., Atchley, S.C., and Nordt, L.T., 2010, Channels, overbanks and paleosols: the relationship between climate, base level and lithofacies heterogeneity within the Triassic Sonsela Member, PFNP Arizona. 2010 AAPG Annual Meeting Abstracts with Programs. AAPG Search and Discovery #90104.

Nordt, L., Dworkin, S., and Atchley, S.C., 2010, Characterization of paleosols across the K-T boundary using pedotransfer functions: a case study from Big Bend National Park, U.S.A., integrating biogeochemical and climate controls on evolving terrestrial ecosystems. 2010 GSA Annual Meeting Abstracts with Programs.

Dworkin, S., Nordt, L., and Atchley, S.C., 2010, A 7 Ma record of atmospheric dC13 derived from organic matter in Late Cretaceous and Early Tertiary paleosols. 2010 GSA Annual Meeting Abstracts with Programs.

Hunt, L.E., Atchley, S.C., and Ball, N.H., 2010, Sequence stratigraphic and depositional controls on reservoir continuity within the Cretaceous Doe Creek Member of the Kaskapau Formation, Valhalla Field, Alberta, Canada. 2010 CSPG Meeting Abstracts with Programs.

Ball, N.H., Atchley, S.C., and Hunt, L.E., 2010, Depositional and diagenetic controls on reservoir quality and their petrophysical prediction within the Upper Cretaceous Doe Creek Member of the Kaskapau Formation at Valhalla Field, northwest Alberta, Canada. 2010 CSPG Meeting Abstracts with Programs.

Dworkin, S.I, Nordt, L.C., and Atchley, S. C., 2009, A 7 Ma Record of Atmospheric delta C13O2 derived from organic matter in Late Cretaceous and Early Tertiary paleosols: Geological Society of America, Abstracts with Programs, v. 41, no. 7, p. 514.

Atchley, S. C., D. M. Cleveland, L. West, G. Carelli, and T. Knight, 2008, The Swan Hills Formation at Kaybob South Field, Alberta: an example of remaining reserves potential within mature fields. 2008 CSPG Annual Meeting Abstracts with Programs.

Cleveland, D. M., Nordt, L. C., and S. C. Atchley, 2007, Paleosols and pedogenic isotopes as evidence for extreme Late Triassic climatic events, Chinle Formation, northern New Mexico: 2007 GSA Annual Meeting Abstracts with Programs.

Gotcher, C., S. C. Atchley, and L. C. Nordt, 2007, The Mid-Norian paleolandscape of the Newspaper Interval within the Blue Mesa Member of the Chinle Formation in Petrified Forest National Park, Arizona: 2007 GSA Annual Meeting Abstracts with Programs.

Geary, J. R., and S. C. Atchley, 2007, Controls on hydrocarbon entrapment and reservoir distribution: the Pennsylvanian Oswego and Big Lime limestones in the Putnam Field area, Anadarko Basin, Oklahoma: Tulsa Geological Society, March 27th meeting.

Dworkin, S. I., L. C. Nordt, and S. C. Atchley, 2006, Sr isotope ratios and trace element concentrations of pedogenic calcite record environmental conditions in west Texas paleosols spanning the K-T boundary: 2006 GSA Annual Meeting Abstracts with Programs.

Josson, E. M., S. C. Atchley, and *J. A. Kahmann, 2006, Reservoir quality and continuity, and secondary recovery potential of the Mississippian Pekisko Formation at Twining Field, south-central Alberta, Canada: American Association of Petroleum Geologists 2006 Abstracts.

Atchley, S.C., Barclay, C., Jones, K., Mintz, J., and Aislyn Trendell, 2010-2011, Regional exploration assessment of the Late Devonian Jean Marie and Kakisa Formations within the Bivouac/Ekwan field areas, northern British Columbia. Sponsored by Husky Energy.

Atchley, S. C., 2009, Kaybob South Triassic Montney "Coquinal Dolomite": depositional and stratigraphic controls on reservoir quality and continuity, Alberta Canada. Core workshop sponsored by Husky Energy.

Atchley, S. C., N. Ball, and L. Hunt, 2008, Paleoenvironmental and sequence stratigraphic controls on enhanced oil recovery within the Cretaceous Doe Creek Member of the Kaskapau Formation, Valhalla Field, Alberta, Canada. Sponsored by Husky Energy.

Atchley, S. C., and G. Carrelli, 2007, Stratigraphic controls on gas accumulation and production within the Bigstone region of central Alberta. Sponsored by Auriga Energy, Inc.

Atchley, S. C., 2006, Jurassic Rock Creek and Lower Cretaceous "Ellerslie" gas development potential across the Carrot Creek region of southern Alberta. Sponsored by Auriga Energy, Inc.

Atchley, S. C., and D. M. Cleveland, 2006, Reservoir characterization and development potential of a retrograde gas reservoir: the Devonian Swan Hills Formation at the Kaybob South BHL Gas Unit #1. Sponsored by Auriga Energy, Inc.

Atchley, S. C., E. Johsson, and J. Kahmann, 2005, Production optimization of the Mississippian Pekisko Formation at Twining Field, Alberta, as guided by a detailed sequence stratigraphic framework. Sponsored by Pengrowth Corporation.

Atchley, S. C., J. Kahmann, and J. Koenig, 2004, a sequence stratigraphic model for infill and step-out development of the Leduc Formation at Sturgeon Lake Field, central Alberta, Canada. Sponsored by Chariot Energy, Inc.

Geary, J., S. C. Atchley, 2004, Controls on hydrocarbon entrapment and reservoir distribution within the Pennsylvanian Oswego Limestone in the Putnam Field Area, Anadarko Basin, Oklahoma. Sponsored by Apache Energy Corporation.

Atchley, S. C., 2003, A sequence stratigraphic model for infill development of the Leduc Formation at the Innisfail Leduc Unit, central Alberta, Canada. Sponsored by Chariot Energy, Inc.

Atchley, S. C. and A. Goettemoeller, 2003, Gas reserves assessment and recovery strategy for the Mississippian Pekisko Formation, Innisfail Field, central Alberta, Canada. Sponsored by Chariot Energy, Inc.

Atchley, S. C., 2001, Assessment of Enhanced Oil Recovery potential of heavy-oil reserves at Liege Field (Grosmont Formation), Western Canada Sedimentary Basin. Sponsored by Suncor Energy, Inc.

Atchley, S. C., T. Boucher, 2001, Development drilling potential within Mississippian limestone and Lower Cretaceous siliciclastic reservoirs of the Cow Lake, Willesden Green, and Gilby Field areas. Sponsored by Provident Energy Trust Co.

Sembritzsky, C. L., S. C. Atchley, 2001, Reservoir characterization of the Permian (Leonardian) Clear Fork and Glorieta Formations, Stockyard Field, west Texas. Sponsored by Texland Petroleum.

Atchley, S. C., D. Labelle, 2000, Stratigraphic controls on reservoir compartmentalization within the Lower Cretaceous Mannville Formation (Dina Member), Hayter field area, central Alberta, Canada. Sponsored by Union Pacific Resources/Anadarko Petroleum Corporation.

Atchley, S. C., 2000, Risk assessment of hydrogen sulfide disposal within the Lower Cretaceous "Ostracode Zone", Acheson field area, north-central Alberta, Canada. Sponsored by Chevron, Canada.

Atchley, S. C., 2000, Identification of Upper Paleozoic stratigraphic intervals for waste-water disposal, Olds field area, central Alberta. Sponsored by Canadian 88 Energy Corporation.

Atchley, S. C., 1999, Production optimization at Homeglen-Rimbey field as guided by a refined facies and sequence stratigraphic framework, Western Canada Sedimentary Basin. Sponsored by Gulf Canada.

Atchley, S. C., 1998, Sequence stratigraphic reservoir characterization of the Leduc Formation at Westerose North and South fields, Western Canada Sedimentary Basin, Phase II. Sponsored by Gulf Canada.

Atchley, S. C., 1998, Depositional controls on reservoir continuity for primary and enhanced oil recovery, Keg River Formation at Kidney "BB" Pool, Western Canada Sedimentary Basin. Sponsored by Gulf Canada.

Rains, D. B., S. C. Atchley, 1998, Hydrocarbon play summary of the eastern Permian Basin, west Texas. Sponsored by Exxon Exploration Company.

Atchley, S. C., J. J. Beall, 1997, Petroleum prospect assessment of the Swan Hills Formation at Fox Creek Field, Western Canada Sedimentary basin. Sponsored by Gulf Canada.

Atchley, S. C., K. Brunette, and K. Pate, 1996, Judy Creek Exercise (Stratigraphic Correlation to Maximize Production Opportunities). Corporate Training Module. Sponsored by Advantage Energy.

Atchley, S. C., K. Brunette, K. Pate, and M. G. McMurray, 1996, Prospect assessment of the Cardium Formation at Carrot Creek Field, Western Canada Sedimentary Basin, Alberta. Sponsored by Pennzoil Canada.

Atchley, S. C., K. Brunette, K. Pate, and M. G. McMurray, 1996, Prospect assessment of the Swan Hills Formation in the vicinity of Virginia Hills Field, Western Canada Sedimentary Basin, Alberta. Sponsored by Pennzoil Canada.

Dr. Atchley on Guadalupe Peak trail, Guadalupe Mountains National Park, west Texas.

Barclay, C., in progress (M.S.), Sequence stratigraphy of the Late Devonian Jean Marie and Kakisa formations, northeastern British Columbia, Canada.

Jones, K., in progress (M.S.), Geologic risk and reserves assessment for resource development within the Late Devonian Jean Marie and Kakisa formations, northeastern British Columbia, Canada.

Felda, G., in progress (M.S.), The climatic significance of contemporaneous pedogenic and lacustrine carbonates within the Late Triassic Owl Rock Member of the Chinle Formation, Petrified Forest National Park, Arizona.

Dhillon, R., in progress (M.S.), Alluvial sequence stratigraphy of the Miocene Fort Hancock Formation, Hueco Bolson, west Texas: depositional response to the rise of extensive grasslands.

Trendell, A., in progress (Ph.D.) An evaluation of the co-dependence between climate, tectonics and evolving alluvial depositional style as preserved within the Triassic Sonsela Member of the Chinle Formation at Petrified Forest National Park, Arizona.

Hunt, L., 2009 (M.S.), Sequence stratigraphic and depositional controls on reservoir continuity within the Cretaceous Doe Creek Member of the Kaskapau Formation at Valhalla Field, Alberta, Canada.

Ball, N., 2009 (M.S.), Depositional controls on reservoir quality and their petrophysical predictors within the Cretaceous Doe Creek Member of the Kaskapau Formation at Valhalla Field, Alberta, Canada.

Cleveland, D., 2007 (Ph.D., co-advised with Dr. Lee Nordt), The interrelationship of sequence stratigraphy, paleoclimatology, and terrestrial ichnology in Triassic paleosol-bearing alluvial successions, Moenkopi and Chinle Formations, southwestern United States.

Johsson, E., 2006 (M.S.), Sequence stratigraphy as a guide for secondary and enhanced oil recovery, and infill development within the Mississippian Pekisko Formation, Twining Field, Alberta.

Kahmann, J., 2005 (M.S.), The Sequence Stratigraphic Evolution of the Sturgeon Lake Bank, Central Alberta Canada and its Regional Implications.

Koenig, J., 2005 (M.S.), Sequence stratigraphic controls on reservoir heterogeneity within the Devonian Leduc Formation at Sturgeon Lake Field, central Alberta, Western Canada Sedimentary Basin.

Prochnow, S., 2005 (Ph.D., co-advised with Dr. Lee Nordt), Paleosols as a tool for sequence stratigraphic, paleogeographic and paleoclimatic reconstruction: The Triassic Chinle Formation of Castle Valley, southeastern Utah.

Boucher, T., 2004 (M.S.), Stratigraphy of the Triassic Chinle Formation within Castle Valley, southeastern Utah: The history of fluvial fill within a rapidly-subsiding salt-withdrawl minibasin. Anticipated completion: summer 2003.

Geary, J., 2004 (M.S.) Controls on hydrocarbon entrapment and reservoir distribution: the Pennsylvanian Oswego Limestone in the Putnam Field Area, Anadarko Basin, Oklahoma. Anticipated completion: summer 2003.

Forkner, R., 2002 (M.S., co-advised with Dr. Lee Nordt), Paleoclimatic variability across the Cretaceous-Tertiary boundary as interpreted from paleosols, Red Deer River Valley, Alberta, Canada. Anticipated completion: summer 2002

Sembritzky, C, 2001 (M.S.), Reservoir characterization of the Upper Clear Fork and Glorieta Formations, McElroy Field, Central Basin Platform, west Texas: Baylor University unpublished Master's thesis.

Walgren, J., 2000 (B.S.), Paleotopographic and base level controls on sediment grain size within the Lower Cretaceous Travis Peak Formation, central Texas: Baylor University unpublished Bachelor's thesis.

Talbert, J., 2000 (M.S.), Sequence stratigraphy of the Fredericksburg Group, central and north Texas: Baylor University unpublished Master's thesis, 140 p.

Rains, D., 1998 (B.S.), Hydrocarbon play summary of the Central Basin Platform-Ozona Arch, and Midland Basin of the Permian Basin region, west Texas: Baylor University unpublished Bachelor's thesis.