T12B:
Observations and Models of Multiphase Deformation in Rifts and Rifted Margins II


Submit an Abstract to this Session


Session ID#: 57089

Session Description:
Observations from rifts and rifted margins suggest continental extension commonly involves multiple phases of deformation with distinct structural, sedimentary and magmatic characteristics. In many rifts, deformation evolves both as a function of time and location, and rift architecture may reflect the influence of structural inheritance, evolution of the lithosphere’s thermal-mechanical profile, feedbacks between surface process and lithospheric deformation or large-scale changes in plate driving forces. Here, we solicit presentations that examine the long-term evolution of continental rift systems through field, geophysical and numerical investigations. In particular, we encourage submissions that focus on the processes driving changes in deformation style and use large 3-D observational or numerical data sets to characterize lithospheric deformation.
Primary Convener:  John Naliboff, University of California Davis, Davis, CA, United States
Conveners:  Rebecca E Bell, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, Jolante van Wijk, New Mexico Institute of Mining and Technology, Earth & Environmental Science, Socorro, United States and Scott E K Bennett, USGS, Geology Minerals Energy and Geophysics Science Center, Menlo Park, CA, United States
Primary Liaisons:  John Naliboff, University of California, Davis, Computational Infrastructure for Geodynamics (CIG), Earth and Planetary Sciences Department, Davis, CA, United States and Rebecca E Bell, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom
Chairs:  Rebecca E Bell, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom and Scott E K Bennett, U.S. Geological Survey, Geology, Minerals, Energy, and Geophysics Science Center, Portland, United States
OSPA Liaison:  Scott E K Bennett, U.S. Geological Survey, Geology, Minerals, Energy, and Geophysics Science Center, Portland, United States
Index Terms:

8105 Continental margins: divergent [TECTONOPHYSICS]
8109 Continental tectonics: extensional [TECTONOPHYSICS]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]
8159 Rheology: crust and lithosphere [TECTONOPHYSICS]

Abstracts Submitted to this Session:

What Tectonic Record Does the Passage of a Weak Plume Leave in a Rift? (381949)
Jolante van Wijk, New Mexico Institute of Mining and Technology, Earth & Environmental Science, Socorro, United States and Gary J Axen, New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, NM, United States
Mesozoic rifting style of NW Africa rifted margin and West Iberia rifted margin and Galicia Interior Basin (430335)
Cesar R Ranero1, Valenti Sallares2, Alcinoe Calahorrano3, Alejandra L. Cameselle4, Irene Merino5, Marta Neres6, Daniel Dagnino7, Adria Melendez7, Clara Estela Jimenez Tejero8 and Rafael Bartolome9, (1)ICM-CSIC, Barcelona Center for Subsurface Imaging, ICREA at CSIC, Instituto de Ciencias del Mar, Barcelona, Spain, Barcelona, Spain, (2)Institute of Marine Sciences - CSIC, Barcelona, Spain, (3)Institute of Marine Science -CSIC, Barcelona, Spain, (4)University of Vigo, Vigo, Spain, (5)Institució Catalana de Recerca i Estudis Avançats, ICREA, Barcelona, Spain, Barcelona, Spain, (6)Instituto Portugues do Mar e da Atmosfera, Lisbon, Portugal, (7)Institute of Marine Sciences-CSIC, Barcelona, Spain, (8)Institute of Marine Sciences-CSIC, Barcelona (Spain, Spain, (9)ICM-CSIC, Barcelona-CSI, Geosciences, Barcelona, Spain
The Thermomechanical Evolution of Extended Lithosphere: Inheritance, Depth-Dependent Thinning and Detachment Faults. (411577)
Yanhui Suo, University of Texas at Austin, Dept. of Geological Sciences, Austin, TX, United States, Andrew Smye, Pennsylvania State University Main Campus, Department of Geosciences, University Park, United States and Philip J Ball, Keele University, Faculty of Natural Sciences, Geography, Geology and the Environment, Staffordshire, United Kingdom
Effect of contrasting strength from inherited crustal fabric on the development of rifting margins: the example of the Northeastern Canadian margin (367377)
Suzon Jammes, Texas State University, Department of Geography, San Marcos, TX, United States and Yanhui Suo, Ocean University of China, Qingdao, China
Variability in Normal Fault Activity in the Central Italian Apennines: Insights from Thermo-Mechanical Modelling (406260)
Anneleen Geurts, Ritske S Huismans and Patience A Cowie, University of Bergen, Department of Earth Science, Bergen, Norway
Continental Ice Sheets and Continental Break-up (405797)
John J Armitage, Institut de Physique du Globe de Paris, Paris, France, Kenni Dinesen Petersen, Aarhus University, Department of Geoscience, Aarhus, Denmark, David Ferguson, Harvard University, Cambridge, MA, United States and Timothy T Creyts, Columbia University-LDEO, Palisades, NY, United States
Tectonic and climatic controls on endorheic-exorheic transitions in narrow continental rifts (361617)
Michael A Berry1, Jolante van Wijk2, Daniel Cadol3, Erica Emry1 and Daniel Garcia-Castellanos4, (1)New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, NM, United States, (2)New Mexico Institute of Mining and Technology, Earth & Environmental Science, Socorro, United States, (3)New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, United States, (4)Geosciences Barcelona, CSIC, Barcelona, Spain
The importance of topographic steady-state for the stability of half-graben structures (406517)
Jean-Arthur L Olive, Ecole Normale Superieure Paris/CNRS, Laboratoire de geologie, Paris, France, Luca Claude Malatesta, University of California Santa Cruz, Santa Cruz, CA, United States, Mark D Behn, Boston College, Earth and Environmental Sciences, Chestnut Hill, MA, United States and W Roger Buck, Columbia University of New York, Lamont-Doherty Earth Observatory, Palisades, NY, United States

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