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Rocky Mountain (66th Annual) and Cordilleran (110th Annual) Joint Meeting (19–21 May 2014)

Session No. 37
Wednesday, 21 May 2014: 1:00 PM-5:00 PM
Reid Hall 108 (Montana State University)

T11. Cenozoic Evolution of the Southwest: From the Relatively Undeformed Colorado Plateau to Central Basin and Range Complexities

 

Melissa A. Lamb, Paul J. Umhoefer, Thomas A. Hickson and Sue Beard, Advocates
Paper #
Start Time
1
1:00 PM
NEW CONSTRAINTS ON THE EXTENT, AGE, AND EMPLACEMENT HISTORY OF THE EARLY MIOCENE MARKAGUNT MEGABRECCIA, SOUTHWEST UTAH—ONE OF THE WORLD'S LARGEST SUBAERIAL GRAVITY SLIDES
BIEK, Robert F., Utah Geol Survey, PO Box 146100, Salt Lake City, UT 84114-6100, HACKER, David B., Department of Geology, Kent State University, 221 McGilvrey Hall, Kent, OH 44242 and ROWLEY, Peter D., Geologic Mapping Inc, P.O. Box 651, New Harmony, UT 84757, bobbiek@utah.gov, bobbiek@utah.gov
2
1:20 PM
PALEOGEOGRAPHY OF THE HORSE SPRING FORMATION IN THE LAKE MEAD DOMAIN (NEVADA) FROM 18 TO 12 MA: DID A RIVER FLOW INTO OR THROUGH IT?
UMHOEFER, Paul J.1, LAMB, Melissa A.2, HICKSON, Thomas A.3, CAINS, Amanda4, WINSTON, Jeremy4, BORER, Daniel4, DUNBAR, Nelia W.5, MCINTOSH, William6 and BEARD, L. Sue7, (1)School of Earth Sciences & Environmental Sustainability, Northern Arizona University, 625 Knoles Drive, Box 4099, Flagstaff, AZ 86011, (2)Geology Department, University of St. Thomas, 2115 Summit Ave, St. Paul, MN 55105, (3)Geology, University of St. Thomas, 2115 Summit Ave, Saint Paul, MN 55105, (4)School of Earth Sciences & Environmental Sustainability, Northern Arizona University, P.O. Box 4099, Flagstaff, AZ 86011, (5)New Mexico Bureau of Geology, New Mexico Tech, Socorro, NM 87801, (6)New Mexico Bureau of Geology and Mineral Resources, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, (7)U.S. Geological Survey, 2255 N Gemini Dr, Flagstaff, AZ 86001-1637, paul.umhoefer@nau.edu, paul.umhoefer@nau.edu
3
1:40 PM
DETERMINING STYLES OF HANGING-WALL DEFORMATION IN CONTINENTAL EXTENSION, THE LOVELL WASH MEMBER OF THE HORSE SPRING FORMATION, LAKE MEAD AREA, NEVADA
LAMB, Melissa A.1, ANDERSON, Z.W.2, POMERLEAU, Crystal1, UMHOEFER, Paul J.3, DUNBAR, Nelia4 and MCINTOSH, William5, (1)Geology Department, University of St. Thomas, 2115 Summit Ave, St. Paul, MN 55105, (2)School of Earth Sciences and Environmental Sustainability, Northern Arizona University, P.O. Box 4099, Flagstaff, AZ 86011, (3)School of Earth Sciences & Environmental Sustainability, Northern Arizona University, 625 Knoles Drive, Box 4099, Flagstaff, AZ 86011, (4)Bureau of Geology, New Mexico Institution of Mining and Technology, 801 Leroy Place, Socorro, NM 87801, (5)New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM 87801, malamb@stthomas.edu, malamb@stthomas.edu
4
2:00 PM
CLIMATIC AND TECTONIC CONTROLS ON LACUSTRINE ISOTOPIC VARIABILITY WITHIN THE MIOCENE HORSE SPRING FORMATION, SOUTHERN NEVADA
POMERLEAU, Crystal1, LAMB, Melissa A.1 and HICKSON, Thomas A.2, (1)Geology Department, University of St. Thomas, 2115 Summit Ave, St. Paul, MN 55105, (2)Geology, University of St. Thomas, 2115 Summit Ave, Saint Paul, MN 55105, pome3692@stthomas.edu, pome3692@stthomas.edu
 
2:20 PM
Break
5
2:40 PM
MODELING AN ACTIVE HYDROTHERMAL SYSTEM IN A VOLCANIC, BASEMENT RIDGE STEP-OVER: FIRST STEPS IN A MULTI-DISCIPLINE APPROACH, SOUTHERN DIXIE VALLEY, NEVADA
ALM Jr, Steve, Department of Geology, University of Kansas, 2305 westdale rd, Lawrence, KS 66049, WALKER, J. Douglas, Department of Geology, University of Kansas, Lawrence, KS 66045, TSOFLIAS, George, Geology, The University of Kansas, 1475 Jayhawk Blvd, Lindley 120, Lawrence, KS 66045 and SABIN, Andrew, Geothermal Program Office, Naval Air Warfare Center, M.S. 4011, China Lake, CA 93555, steve.alm@ku.edu, steve.alm@ku.edu
6
3:00 PM
VERTICAL AXIS ROTATION ALONG THE LAKE MEAD FAULT SYSTEM NEAR HOOVER DAM, ARIZONA-NEVADA
BEARD, L. Sue, U.S. Geological Survey, 2255 N Gemini Dr, Flagstaff, AZ 86001-1637 and ANDERSON, Zachary W., Utah Geological Survey, Mapping Program, 1594 W. North Temple, Suite 3110, Salt Lake City, UT 84116, sbeard@usgs.gov, sbeard@usgs.gov
7
3:20 PM
DOWNWARD TRANSPORT OF IRON IN THE GRAND STAIRCASE OF SOUTHERN UTAH: THE ROLE OF CARBON DIOXIDE
LOOPE, David B. and KETTLER, Richard M., Department of Earth & Atmospheric Sciences, University of Nebraska-Lincoln, Lincoln, NE 68588-0340, dloope1@unl.edu, dloope1@unl.edu
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