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GSA Annual Meeting, November 5-8, 2001

Session No. 9
Monday, 5 November 2001: 8:00 AM-12:00 PM

Structural Geology I: Faulting and Folding: Timing, Geometry, and Processes

 

Shankar Mitra and Terry L. Panhorst, Chairs
Paper #
Start Time
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8:00 AM
DELINEATION OF A KILOMETER-SCALE COSEISMIC RUPTURE AT HYPOCENTRAL DEPTHS USING PSEUDOTACHYLYTE VEIN GEOMETRY: AN EXAMPLE FROM THE NORTHERN SAWATCH RANGE, COLORADO
ALLEN, Joseph L., Dept. Physical Sciences, Concord College, Athens, WV 24712-1000, allenj@concord.edu, allenj@concord.edu
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8:15 AM
AGE OF THE OUTER HEBRIDES FAULT ZONE FROM AR-AR DATING OF PSEUDOTACHYLYTE
MAGLOUGHLIN, Jerry F.1, HALL, Chris M.2, THORNBERRY, Trista L.3, HOLDSWORTH, Robert4 and BUTLER, Chris A.4, (1)Earth Resources, Colorado State Univ, Fort Collins, CO 80523, (2)Univ of Michigan, Ann Arbor, MI, (3)Earth Resources, Colorado State University, Fort Collins, CO 80523, (4)Durham Univ, United Kingdom, jerrym@cnr.colostate.edu, jerrym@cnr.colostate.edu
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8:30 AM
THE AGE, ORIGIN, AND SIGNIFICANCE OF PSEUDOTACHYLYTE IN THE COAST MOUNTAINS, BRITISH COLUMBIA
DAVIS, Kenneth J., Dept. of Geology, College of William & Mary, Box 8795, Williamsburg, VA 23187, BAILEY, Christopher M., Dept. of Geology, College William & Mary, PO Box 8795, Williamsburg, VA 23187-8795, DAVIDSON, Cameron M., Beloit College, 700 College St, Beloit, WI 53511-5595 and SINGER, Brad S., Department of Geology and Geophysics, Univ of Wisconsin - Madison, 1215 West Dayton Street, Madison, WI 53706, kjdavi@wm.edu, kjdavi@wm.edu
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8:45 AM
AR DATING OF FAULTS IN THE SOUTHERN CANADIAN ROCKIES: THE RUNDLE AND MCCONNELL THRUST SYSTEMS
VAN DER PLUIJM, Ben, Geological Sciences, Univ of Michigan, 2534 CC Little Building, Ann Arbor, MI 48109-1063, HALL, Chris, Geological Sciences, Univ of Michigan, 4534 CC Little Building, Ann Arbor, MI 48109-1063, VROLIJK, Peter, ExxonMobil Upstream Rsch Co, Houston, TX 77252-2189 and PEVEAR, David, 1415 Kipling St, Houston, TX, vdpluijm@umich.edu, vdpluijm@umich.edu
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9:00 AM
MINERALOGY AND MICROFABRIC OF THE PUNCHBOWL FAULT, AN EXHUMED SEGMENT OF THE SAN ANDREAS FAULT SYSTEM
SOLUM, John G.1, VAN DER PLUIJM, Ben1, PEACOR, Donald R.1 and WARR, Laurence N.2, (1)Geological Sciences, Univ of Michigan, 2534 CC Little Building, Ann Arbor, MI 48109-1063, (2)Geologisch-Palaeontologisches Institut, Univ of Heidelberg, Ruprecht-Karls-Universität INF 234, 69120 Heidelberg, Germany, jsolum@umich.edu, jsolum@umich.edu
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9:15 AM
DEFORMATION OF BLOCKS AND MATRIX IN FRANCISCAN MELANGE, SAN SIMEON, CALIFORNIA: IMPLICATIONS FOR MELANGE GENESIS
HARRINGTON, Daniel F., Department of Geological Sciences, The University of Texas at Austin, Austin, TX 78712-1101 and CLOOS, Mark, Univ Texas, Dept Geological Sciences, C1140, Austin, TX 78712-1101, dfharrin@mail.utexas.edu, dfharrin@mail.utexas.edu
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9:30 AM
PRESERVATION OF THE LEKA OPHIOLITE COMPLEX IN A PULL-APART SETTING, NORWAY
TITUS, Sarah J.1, FOSSEN, Haakon2, PEDERSEN, Rolf B.3, VIGNERESSE, Jean Louis4 and TIKOFF, Basil1, (1)Univ of Wisconsin, 1215 W. Dayton St, Madison, WI 53706, (2)University of Bergen, Allegaten 41, Bergen, N-5007, Norway, (3)Univ of Bergen, Allegaten 41, Bergen, N-5007, Norway, (4)CREGU, UMR CNRS 7566 G2R, BP 23, Vandoeuvre-Nancy, F-54501, France, stitus@geology.wisc.edu, stitus@geology.wisc.edu
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9:45 AM
FAULT GEOMETRY AND LINKAGE ALONG NORMAL FAULTS: EXAMPLES FROM THE SEVIER FAULT, SW UTAH
SCHIEFELBEIN, I. M., TAYLOR, W. J. and SPELL, T. L., Geoscience, UNLV, 4505 Maryland Pkwy, Las Vegas, NV 89154-4010, ilsa@nevada.edu, ilsa@nevada.edu
 
10:00 AM
Break
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10:15 AM
PASSIVE AND ACTIVE BEHAVIOR OF DOMINANT THRUST SHEETS DURING TAPER ENHANCEMENT IN THE HINTERLAND OF A FOLD-THRUST BELT WEDGE
MITRA, Gautam, Dept. of Earth & Environmental Sciences, University of Rochester, Rochester, NY 14627, mitr@troi.cc.rochester.edu, mitr@troi.cc.rochester.edu
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10:30 AM
FAULTED DETACHMENT FOLDS: AN ALTERNATIVE MODEL FOR FAULT-TIP FOLDS
MITRA, Shankar, ConocoPhillips School of Geology and Geophysics, University of Oklahoma, 100 E Boyd St, SEC 810, Norman, OK 73019, smitra@ou.edu, smitra@ou.edu
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10:45 AM
FOLD AND FAULT INTERACTION IN THREE-DIMENSIONS: A SIMULATION OF NORTHEASTERN BIG HORN BASIN, WYOMING
SAVAGE, Heather M. and COOKE, Michele L., Geosciences, Univ of Massachusetts, Amherst, Morrill Science Center, Amherst, MA 01003, heather@geo.umass.edu, heather@geo.umass.edu
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11:00 AM
MECHANICAL MODELS OF FAULT PROPAGATION FOLDS AND COMPARISON TO THE TRISHEAR KINEMATIC MODEL
CARDOZO, Nestor F.1, BHALLA, Kavi2, ZEHNDER, Alan T.2 and ALLMENDINGER, Richard W.1, (1)Earth and Atmospheric Sciences, Cornell Univ, Snee Hall, Ithaca, New York, 14853, Ithaca, NY 14853, (2)Theoretical and Applied Mechanics, Cornell Univ, 212 Kimball Hall, Ithaca, New York, 14853, Ithaca, NY 14853, nfc3@cornell.edu, nfc3@cornell.edu
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11:15 AM
USING BEZIER CURVES TO ANALYZE THE SHAPES OF FOLDED SURFACES
WOJTAL, Steven and HUGHES, Gwyneth, Department of Geology, Oberlin College, Carnegie Building, 52 W. Lorain Street, Oberlin, OH 44074-1044, steven.wojtal@oberlin.edu, steven.wojtal@oberlin.edu
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11:30 AM
FOLDING BY CATACLASTIC FLOW: EVOLUTION OF CONTROLLING FACTORS DURING DEFORMATION
ISMAT, Zeshan, Earth & Environmental Sciences, University of Rochester, Hutchison Hall 227, Rochester, NY 14627 and MITRA, Gautam, Earth & Environmental Sciences, Univ of Rochester, Hutchison Hall 227, Rochester, NY 14627, zlsm@mail.rochester.edu, zlsm@mail.rochester.edu
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11:45 AM
MILLIMETER-SCALE VARIATIONS IN CARBON AND OXYGEN ISOTOPES: NEW INSIGHTS ON VEIN GROWTH MECHANISMS AND PLUMBING SYSTEMS OF FAULT-RELATED FOLDS
LEFTICARIU, Liliana, Geology and Environmental Geosciences, Northern Illinois Univ, Dept. of Geology and Environmental Geosciences, Northern Illinois University, DeKalb, IL 60115-2854, ROMANEK, Christopher, Savannah River Ecology Laboratory, Department of Geology, Univ of Georgia, Savannah River Ecology Laboratory, Draver E, Aiken, SC 29802, FISCHER, Mark P., Department of Geology and Environmental Geosciences, Northern Illinois Univ, 406 Davis Hall, De Kalb, IL 60115-2854 and PERRY, Eugene C., Department of Geology and Environmental Geosciences, Northern Illinois Univ, 312 Davis Hall, De Kalb, IL 60115-2854, lleftic@geol.niu.edu, lleftic@geol.niu.edu
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