Session: Stratigraphic, Structural, Geomorphic, and Tectonic Evolution of the Lake Mead Region, Southwestern United States, from the Oligocene to the Present (2010 GSA Denver Annual Meeting (31 October

T142. Stratigraphic, Structural, Geomorphic, and Tectonic Evolution of the Lake Mead Region, Southwestern United States, from the Oligocene to the Present

GSA Quaternary Geology and Geomorphology Division

Andrew D. Hanson and Amy Brock, Advocates

Paper #

Start Time

1:30 PM

Introductory Remarks

1:35 PM

HOW THE PIECES ALL FIT TOGETHER: A STRUCTURAL INTERPRETATION OF THE CENTRAL BASIN AND RANGE

TAYLOR, W. Lansing, 59 Trace Creek Drive, The Woodlands, TX 77381 and MCCLAY, Ken, Earth Sciences Department, Royal Holloway University, Egham Hill. Queens Building, Egham, TW20 0EX, United Kingdom, lans@happinesstech.biz, lans@happinesstech.biz

1:50 PM

USING BASIN ANALYSIS TO TEST MODELS OF TRANSTENSIONAL FAULTING AND THE INCEPTION OF EXTENSION IN THE LAKE MEAD REGION

HICKSON, Thomas A., Geology, University of St. Thomas, 2115 Summit Ave, Saint Paul, MN 55105, LAMB, Melissa A., Geology Department, University of St. Thomas, 2115 Summit Ave, St. Paul, MN 55105, UMHOEFER, Paul J., School of Earth Sciences & Environmental Sustainability, Northern Arizona University, 625 Knoles Drive, Box 4099, Flagstaff, AZ 86011 and BEARD, L. Sue, U.S. Geological Survey, 2255 N Gemini Dr, Flagstaff, AZ 86001-1637, tahickson@stthomas.edu, tahickson@stthomas.edu

2:05 PM

NEOGENE DEFORMATION OF THE WHEELER FAULT SYSTEM: APPLICATION OF HIGH-PRECISION GPS AND PHOTOGRAMMETRIC MAPPING TECHNIQUES

SEIXAS, Gustav and RESOR, Phillip, Earth and Environmental Sciences, Wesleyan University, 265 Church Street, Middletown, CT 06459, gseixas@wesleyan.edu, gseixas@wesleyan.edu

2:20 PM

MIOCENE DEFORMATION PATTERNS IN THE LAKE MEAD REGION, BASIN AND RANGE: TECTONIC WEDGES AND BLOCK ROTATIONS IN A TRANSTENSIONAL SETTING

UMHOEFER, Paul J., School of Earth Sciences & Environmental Sustainability, Northern Arizona University, 625 Knoles Drive, Box 4099, Flagstaff, AZ 86011, WAGNER, Rachelle, School of Earth Sciences & Environmental Sustainability, Northern Arizona University, Geology - 4099, Building 12, Knoles Drive, Flagstaff, AZ 86011 and SAN FILIPPO, Rory M., Geology Program, Northern Arizona University, Geology - 4099, Northern Arizona University, Flagstaff, AZ 86011, paul.umhoefer@nau.edu, paul.umhoefer@nau.edu

2:35 PM

GEOMORPHIC EVOLUTION OF A TILTING EXTENSIONAL FAULT BLOCK, AND TEMPLATES FOR TRANSITION TO INTEGRATED DRAINAGE ACROSS IT BY THE COLORADO RIVER, EASTERN LAKE MEAD AREA

HOWARD, Keith A., U.S. Geological Survey, 345 Middlefield Rd, MS/973, Menlo Park, CA 94025, khoward@usgs.gov, khoward@usgs.gov

2:50 PM

Break

3:05 PM

CENOZOIC EXTENSION IN THE RIVER MOUNTAINS, SOUTHERN NEVADA: INTERACTION OF THE SADDLE ISLAND DETACHMENT WITH THE LAS VEGAS VALLEY SHEAR ZONE AND LAKE MEAD FAULT SYSTEM

RITTASE, William, Geology, University of Kansas, Lawrence, KS 66045 and TAYLOR, Wanda, Department of Geoscience, University of Nevada, Las Vegas, 4505 Maryland Parkway, 89154-4010, Las Vegas, NV 89154-4010, rittasew@ku.edu, rittasew@ku.edu

3:20 PM

DETERMINING THE SIGNIFICANCE AND SENSE OF OFFSET OF THE FRENCHMAN MOUNTAIN FAULT, LAS VEGAS, NEVADA: A PAIRED STRUCTURAL AND BASIN ANALYSIS

EATON, Laura M., Geoscience Dept, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Las Vegas, NV 89154-4010 and HANSON, Andrew D., Department of Geoscience, University of Nevada Las Vegas, 4505 So. Maryland Parkway, Box 454010, Las Vegas, NV 89154-7003, lmzeaton@gmail.com, lmzeaton@gmail.com

3:35 PM

THE FLUVIAL MUDDY CREEK FORMATION NEAR OVERTON, NEVADA: PROVENANCE, STRATIGRAPHY, AND MIOCENE-RECENT EVOLUTION OF THE MORMON BASIN

SWENBERG, Carl T., Geoscience, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Las Vegas, NV 89154-4010, HANSON, Andrew D., Department of Geoscience, University of Nevada Las Vegas, 4505 So. Maryland Parkway, Box 454010, Las Vegas, NV 89154-7003 and BROCK-HON, Amy L., Geology, Univ. of Tennessee at Chattanooga, Dept 2352, 615 McCallie Avenue, Chattanooga, TN 37403, c_swenberg@hotmail.com, c_swenberg@hotmail.com

3:50 PM

DETRITAL ZIRCONS FROM THE NEOGENE MUDDY CREEK FORMATION IN SOUTHERN NEVADA INDICATE A MIXED COLORADO PLATEAU-BASIN AND RANGE PROVENANCE

MUNTEAN, Thomas W., Geology Department, Adrian College, 110 S. Madison St, Adrian, MI 49221 and HANSON, Andrew D., Department of Geoscience, University of Nevada Las Vegas, 4505 So. Maryland Parkway, Box 454010, Las Vegas, NV 89154-7003, tmuntean@adrian.edu, tmuntean@adrian.edu

4:05 PM

PROVENANCE OF THE MUDDY CREEK FORMATION NEAR MESQUITE NEVADA AND ITS BEARING on THE PALEO-COLORADO RIVER HYPOTHESIS

HANSON, Andrew D., Department of Geoscience, University of Nevada Las Vegas, 4505 So. Maryland Parkway, Box 454010, Las Vegas, NV 89154-7003 and FORRESTER, Steven W., Providence Engineering, 1201 Main St, Baton Rouge, LA 70802, andrew.hanson@unlv.edu, andrew.hanson@unlv.edu

4:20 PM

Discussion

4:35 PM

Concluding Remarks

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