Three-Dimensional Observations and Models of Lithospheric Extension III

Friday, 19 December 2014: 4:00 PM-6:00 PM
Chairs:  Timothy J Reston, University of Birmingham, Birmingham, United Kingdom and Javier Escartin, CNRS, Paris Cedex 16, France
Primary Conveners:  Dale S Sawyer, Rice University, Houston, TX, United States
Co-conveners:  Timothy A Minshull, University of Southampton, Southampton, United Kingdom and Timothy J Reston, University of Birmingham, Birmingham, United Kingdom
OSPA Liaisons:  Dale S Sawyer, Rice University, Houston, TX, United States

Abstracts Submitted to this Session:

4:00 PM
Insights into the internal structure and formation of striated fault surfaces of oceanic detachments from in situ observations (13°20’N and 13°30’N, Mid-Atlantic Ridge)
Javier Escartin1, Diane Bonnemains1, Catherine Mevel1, Mathilde Cannat1, Sven Petersen2, Nico Augustin2, Antoine Bezos3, Valérie Chavagnac4, Yujin Choi1, Marguerite Godard5, Kristian Haaga6, Cedric Hamelin6, Benoit Ildefonse5, John W Jamieson2, Barbara E John7, Thomas Leleu4, Christopher J MacLeod8, Miquel Massot-Campos9, Paraskevi Nomikou10, Jean-Arthur L Olive11, Marine Paquet1, Celine Rommevaux1, Marcel Rothenbeck2, Anja Steinführer2, Masako Tominaga12, Lars Triebe2, Muriel Andreani13, Rafael Garcia14 and Ricard Campos14, (1)Institut de Physique du Globe de Paris, Paris, France, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (3)University of Nantes, Nantes, France, (4)University of Toulouse, Toulouse, France, (5)University of Montpellier II, Montpellier Cedex 05, France, (6)University of Bergen, Bergen, Norway, (7)University of Wyoming, Laramie, WY, United States, (8)Cardiff University, Cardiff, CF24, United Kingdom, (9)Universitat de les Illes Balears, Palma de Majorca, Spain, (10)University of Athens, Faculty of Geology and Geoenvironment, Athens, Greece, (11)WHOI, Woods Hole, MA, United States, (12)Michigan State University, East Lansing, MI, United States, (13)University Claude Bernard Lyon 1, Villeurbanne, France, (14)University of Girona, Girona, Spain
4:15 PM
Kinematic Analysis of Normal Faults from 3D Seismics within the Otway Basin, Australia: Evidence for Oblique Movement in a Passive Margin
David Colin Tanner, Jennifer Ziesch, Thies Beilecke and Charlotte M Krawczyk, Leibniz Institute for Applied Geophysics, Hannover, Germany
4:30 PM
3D P-Wave Velocity Structure of the Deep Galicia Rifted Margin
Gaye Bayrakci1, Timothy A Minshull1, Richard G Davy1, Dale S Sawyer2, Dirk Klaeschen3, Cord A Papenberg3, Timothy J Reston4, Donna J Shillington5 and Cesar R Ranero6, (1)University of Southampton, Southampton, United Kingdom, (2)Rice University, Houston, TX, United States, (3)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (4)University of Birmingham, Birmingham, United Kingdom, (5)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (6)ICM-CSIC, Barcelona, Spain
4:45 PM
Magmatic Versus Amagmatic Rifting in the East African Rift System from Pn and Sn Tomography
John Paul O'Donnell, Penn State University, State College, PA, United States and Andrew Nyblade, Penn St Univ, University Park, PA, United States
5:00 PM
The Varying Expression of Oceanic Detachment Faulting from Termination to 1.5 Ma
Deborah K Smith1, Johnson R Cann2, Hans Schouten1 and Henry J Dick1, (1)WHOI, Woods Hole, MA, United States, (2)University of Leeds, Leeds, United Kingdom
5:15 PM
A Joint Inversion for Velocity and Anisotropy Structure Beneath a Highly Extended Continental Rift
Zach Eilon1, Geoffrey A Abers2, James B Gaherty1 and Ge Jin1, (1)Columbia University in the City of New York, Lamont-Doherty Earth Observatory, Palisades, NY, United States, (2)Cornell University, Ithaca, NY, United States
5:30 PM
Rift Structure in Eastern Papua New Guinea From the Joint Inversion of Receiver Functions and Seismic Noise
Mathias Janek Obrebski1, Geoffrey A Abers2, Ge Jin3 and Zach Eilon1, (1)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (2)Cornell University, Ithaca, NY, United States, (3)LDEO, Columbia Univ., Palisades, NY, United States
5:45 PM
Crustal structure variations along the NW-African continental margin: a comparison of new and existing models from wide angle and reflection seismic data
Youssef Biari1, Frauke Klingelhoefer1, Mohamed Sahabi2, Daniel Aslanian1, Philippe Schnurle1, Keith E Louden3, Kai Berglar4, Maryline Moulin1, Khalid Mehdi2, David Graindorge5, Mikael Evain1, Massinissa Benabellouahed1 and Christian J Reichert4, (1)IFREMER, Plouzané, France, (2)University of Chouaïb Doukkali, Department of Geology, El Jadida, Morocco, (3)Dalhousie University, Halifax, NS, Canada, (4)BGR Federal Institute for Geosciences and Natural Resources, Hannover, Germany, (5)University of Western Brittany, Brest, France
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