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130 Modes of Lithospheric Extension: Oceanic and Continental Core Complexes

Oral Session
Topical Sessions

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Sunday, 5 October 2008: 8:00 AM-12:00 PM
George R. Brown Convention Center, 332CF

Presiding:
Yildirim Dilek and Elena A. Miranda
8:00 AM
130-1
Mapping the Lower Ocean Crust: Evidence for Variable Melt Production and Mantle Composition during Normal Seafloor Spreading
Henry J.B. Dick, Woods Hole Oceanographic Institution
8:15 AM
130-2
Seismic Evidence for Large-Scale Compositional Heterogeneity of Oceanic Core Complexes
Juan Pablo Canales, Woods Hole Oceanographic Institution; Brian E. Tucholke, Woods Hole Oceanographic Institution; Min Xu, Woods HOle Oceanographic Institution
8:30 AM
130-3
Non-Volcanic Seafloor Spreading and Oceanic Core Complexes: You Can Have One without the Other
Timothy Schroeder, Eastern Connecticut State University; Niels Jöns, University of Bremen; Michael Cheadle, University of Wyoming; Wolfgang Bach, University of Bremen
8:45 AM
130-4
Extensive Core Complex Formation in a Magma Starved Segment of the the Mid-Atlantic Ridge Between 12°-16°n: Strain Softening and a Coupled Crust-Mantle Rheology
John F. Casey, University of Houston; Roger C. Searle, Durham University; Christopher MacLeod, Cardiff University; Bramley J. Murton, Southampton Oceanography Centre
9:00 AM
130-5
Oxide Gabbros from IODP Hole 1309D: Recorders of High-Temperature Strain and Alteration of the Atlantis Massif, An Oceanic Core Complex on the Mid-Atlantic Ridge
Nicholas W. Hayman, University of Texas
9:15 AM
130-6
The Geometry and Mechanics of Active Oceanic Detachment Faulting from An Ocean-Bottom Seismicity Survey at the TAG Segment of the Mid-Atlantic Ridge (26°N)
Brian J. deMartin, Brown University; Robert Reves-Sohn, Woods Hole Oceanographic Institution
9:30 AM
130-7
Pluton Emplacement Kinematics and Arc Collapse during Extensional Tectonics
Gabriela V. Depine, Cornell University; Chris Andronicos, Cornell University
9:45 AM
Break
10:00 AM
130-8
Insights on Metamorphic Core Complex Formation from the Sierra Mazatán Case Study
Martin S. Wong, Colgate University; Phillip B. Gans, University of California, Santa Barbara
10:15 AM
130-9
Core Complexes Are Tectonic Windows of Opportunity: A Microstructural Evaluation of Shear Zone Rheology and Strain Localization in the South Mountains Core Complex, Arizona
Elena A. Miranda, California State University Northridge; James S. Carter, California State University Northridge
10:30 AM
130-10
Rheologically Driven Strain Partitioning in the Footwall Shear Zone of a Metamorphic Core Complex, Raft River Mountains, Utah
Walter A. Sullivan, Colby College
10:45 AM
130-11
Shallow Initial Dip for the Northern Snake Range Footwall: Constraints from Geothermobarometry
Frances J. Cooper, University of Southern California; John P. Platt, Univ of Southern California
11:00 AM
130-12
Exhumation of the Trans-Himalayan Ama Drime Massif: Implications for Orogen-Parallel Mid-Crustal Flow and Exhumation on the Southern Margin of the Tibetan Plateau
Micah Jessup, University of Tennessee; John Cottle, NERC Isotope Geosciences Laboratory; Dennis Newell, Los Alamos National Laboratory; Aaron Berger, Virginia Tech; James Spotila, Virginia Tech
11:15 AM
130-13
The Geomorphic Response of An Active Metamorphic Core-Complex: An Example from the Lunggar Rift, Southern Tibet
Michael Taylor, University of Kansas; Paul Kapp, University of Arizona; Daniel F. Stockli, University of Kansas
11:30 AM
130-14
Extension in granulite facies orthogneisses of the Biranup Complex (Albany-Fraser Orogen), Bremer Bay, Western Australia
Miriam Barquero-Molina, University of Texas at Austin; Sharon Mosher, Jackson School of Geosciences; Catherine Spaggiari, Geological Survey of Western Australia; Simon Bodorkos, Geoscience Australia
11:45 AM
130-15
The Northeastern Emplacement of the Pindos Basin Ophiolites and Their Response to Pelagonian Exhumation Tectonics (Northern Greece)
Anne Ewing Rassios, Institute of Geology and Mineral Exploration; Yildirim Dilek, Miami University; Dimitri Kostopoulos, University of Athens
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