Subaru of America, Inc.
Title Sponsor of the
2005 Annual Meeting

Postmeeting Field Trips

18. Anatomy of Reservoir-Scale Normal Faults in Central Utah: Stratigraphic Controls and Implications for Fault Zone Evolution and Fluid Flow [418] — FULL
Wed.–Fri., 19–21 Oct. Cosponsored by GSA Structural Geology and Tectonics Division.
Peter Vrolijk, ExxonMobil Upstream Research Company, Houston, TX 77252, +1-713-431-4151, fax +1-713-431-4114; Zoe K. Shipton; Rod Myers; James P. Evans; Mike Sweet.
We will examine the way that faults nucleate and grow through complex, 3-D stratigraphic sequences and more homogeneous sequences in Jurassic deposits, central Utah. Along-fault and cross-fault fluid flow will be considered in this context. This trip is intended to attract structural geologists, stratigraphers, and hydrogeologists interested in interdisciplinary research.
Max.: 24; min.: 10. Cost: US$220 (2L, 1D, R, 2ON, vans).
19. Sheet-like Emplacement of Satellite Laccoliths, Sills, and Bysmaliths of the Henry Mountains, Southern Utah [419] — FULL
Wed.–Fri., 19–21 Oct. Cosponsored by GSA Structural Geology and Tectonics Division.
Sven Morgan, Dept. of Geology, Central Michigan University, Mount Pleasant, MI 48859, +1-989-774-1082, fax +1-989-774-2142; Eric Horsman; Basil Tikoff; Michel de Saint Blanquat.
We will examine four satellite intrusions of the Henry Mountains, which may represent successive stages in the progressive growth of igneous bodies. Our research suggests that these intrusions have multiple, sometimes cryptic, sheets. Spectacular outcrops, outstanding scenery, and gourmet lunches will stimulate discussion of various emplacement models. The trip involves moderately strenuous hiking and very little local driving.
Max.: 36; min.: 12. Cost: US$195 (3L, R, 2ON, vans).
20. Folds, Fabrics, and Kinematic Criteria in Rheomorphic Ignimbrites of the Snake River Plain, Idaho: Insights into Emplacement and Flow [420]
Wed.–Sat., 19–22 Oct. — Canceled.
21. Mesozoic Lakes of the Colorado Plateau [421] — FULL
Wed.–Sat., 19–22 Oct. Cosponsored by GSA Limnogeology Division; GSA Sedimentary Geology Division.
Tim Demko, Dept. of Geological Sciences, University of Minnesota, Duluth, MN 55812, +1-218-726-8340, fax +1-218-726-8275; Kathleen Nicoll; Steve Hasiotis; Lisa Park; Joe Beer.
This trip will highlight the lacustrine deposits in the Mesozoic strata of the southern Colorado Plateau. We will examine the evolution of lacustrine deposystems within the themes of continental ecosystems and Pangaean and post-Pangaean paleogeography and paleoclimatology. Stops will examine lake deposits of the Triassic Chinle and Jurassic Morrison Formations in the Moab, Four Corners, and Glen Canyon–Capitol Reef areas.
Max.: 30; min.: 10. Cost: US$300 (3L, 1D, R, 3ON, vans).
22. Birth of the Lower Colorado River — Stratigraphic and Geomorphic Evidence for its Inception and Evolution near the Conjunction of Nevada, Arizona, and California [422]
Thurs.–Sat., 20–22 Oct. Cosponsored by GSA Quaternary Geology and Geomorphology Division. — FULL.
P. Kyle House, Nevada Bureau of Mines and Geology, University of Nevada, Reno, NV 89557, +1-775-784-6691, ext. 176, fax +1-775-784-1709; Philip A. Pearthree; Keith A. Howard; John W. Bell.
This trip will focus on new stratigraphic evidence for the evolution of the lower Colorado River downstream from the Grand Canyon. Highlights include exposures that link latest Miocene catastrophic flooding and lacustrine inundation to river inception, evidence for massive fluvial aggradation in the early Pliocene related to excavation of the Grand Canyon, and evidence for multiple Quaternary aggradation and degradation cycles.
Max.: 30; min.: 12. Cost: US$245 (3L, R, 2ON, SUVs). Begins and ends in Las Vegas.
23. Classic Geology of Zion and Bryce Canyon National Parks and Cedar Breaks National Monument [423] — FULL
Thurs.–Sat., 20–22 Oct.
Grant C. Willis, Utah Geological Survey, P.O. Box 146100, Salt Lake City, UT 84114, +1-801-537-3300, fax +1-801-537-3400; Robert F. Biek.
The cliffs of Zion National Park are carved from 2,000 m of colorful Mesozoic strata. Bryce Canyon and Cedar Breaks display the spectacular salmon-colored Claron Formation. Dinosaur tracks abound in nearby Jurassic strata. We will examine the classic geology of southwest Utah’s most famous parks and geologic sites. A good trip for spouses and friends!
Max.: 45; min.: 15. Cost: US$290 (3L, R, 2ON, bus).
24. Development of Miocene Faults and Basins in the Lake Mead Region: A Tribute to Ernie Anderson and Review of New Research on Basins [424]
Thurs.–Sat., 20–22 Oct. Cosponsored by GSA Structural Geology and Tectonics Division. — FULL.
Paul Umhoefer, Dept. of Geology, Northern Arizona University, Flagstaff, AZ 86011, +1-928-523-6464, fax +1-928-523-9220; Thomas Hickson; Ernie Anderson; L. Sue Beard; Melissa Lamb.
The Lake Mead area offers world-class exposures of Miocene rocks and faults related to large-scale extension. We will examine the development of Miocene faults and basins from Frenchman Mountain near Las Vegas to Overton Arm of Lake Mead. We will focus on critical framework studies and ongoing basinal studies and honor the fundamental contributions of Ernie Anderson.
Max.: 33; min.: 12. Cost: US$320 (3B, 3L, 2D, R, 2ON, vans). Begins and ends in Las Vegas.
25. Don R. Currey Memorial Field Trip to the Shores of Pleistocene Lake Bonneville: Stratigraphy, Geomorphology, and Climate Change [425]
Thurs.–Sat., 20–22 Oct. Cosponsored by GSA Quaternary Geology and Geomorphology Division. — FULL.
Holly Godsey, Dept. of Geology and Geophysics, University of Utah, Salt Lake City, UT 84112, +1-801-209-2940, fax +1-801-581-8219; Elliott Lips; David Miller; Mark Milligan; Jack Oviatt.
This field trip will visit the beautifully preserved shoreline remnants of Lake Bonneville that make up a large part of the northern Utah landscape. We will visit classic field localities including Antelope Island, Stockton Bar, Stansbury Gulch, the Brigham City delta, and Hansel Valley. We will discuss lake processes, stratigraphy, geomorphology, climate change, and the preservation of pristine lake features.
Max.: 40; min.: 20. Cost: US$185 (3L, 1D, R, vans).
26. Paleoseismology and Geomorphology of the Hurricane Fault/Escarpment [426]
Thurs.–Sat., 20–22 Oct. — Canceled.
27. Sedimentology and Sequence Stratigraphy of Isolated Shelf Turbidite Bodies, Book Cliffs, Utah [427] — FULL
Thurs.–Sat., 20–22 Oct. Cosponsored by GSA Sedimentary Geology Division.
Simon A.J. Pattison, Dept. of Geology, Brandon University, Brandon, Manitoba R7A 6A9, Canada, +1-204-727-7468, fax +1-204-728-7346; Huw Williams; Trevor A. Hoffman.
This field trip will examine the sedimentology, sedimentary architecture, sequence stratigraphy, paleogeography, and depositional model of Mancos Shale–encased, isolated sandstone bodies in the Green River to Thompson area, Book Cliffs, eastern Utah. Inner shelf turbiditic channels and lobes are concentrated in the upper Aberdeen and lower Kenilworth members. Implications for shoreline-to-shelf facies models and sequence stratigraphic models will be discussed.
Max.: 30; min.: 5. Cost: US$240 (3L, R, 2ON, vans).
28. Geologic Hazards of the Wasatch Front, Utah [428]
Thurs., 20 Oct. Cosponsored by GSA Engineering Geology Division; Association of Engineering Geologists.
Barry J. Solomon, Utah Geological Survey, P.O. Box 146100, Salt Lake City, UT 84114, +1-801-537-3388, fax +1-801-537-3400; Francis X. Ashland; Bill D. Black; Richard L. Ford; Richard Giraud; David H. Hart; Michael D. Hylland.
The Wasatch Front is characterized by a unique combination of geology, topography, and climate. Its population is growing at a rapid rate, and interaction between the built and natural environments provides opportunities for exposure to a variety of geologic hazards. We will examine several types of geologic hazards encountered along the Wasatch Front and discuss recent related research.
Max.: 42; min.: 12. Cost: US$80 (1L, R, bus).

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© 2005 The Geological Society of America