T43C:
Postcollisional Extensional Tectonics and Basin Evolution in the Gulf of Mexico and Elsewhere I


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Session ID#: 60986

Session Description:
Our understanding of post-collisional extensional tectonics have improved substantially within the last three decades based on geological, geophysical; geochemical studies, and analog and computer modeling in the regions where post-collisional extension have taken place. These regions include Basins and Ranges of Western North America; the Alpine-Himalayan belt in Europe and Asia. However, there are still many important questions.  These include determining a) the precise amount and percentage of cumulative extension; b) the role of strike-slip faulting in extensional processes; c) exhumation history along detachment surfaces; d) geometry of extensional features in the middle and lower crust; e) the nature of upper mantle and asthenospheric flow f) evolution of extensional basins; and g) seismic hazards. This symposium will bring together researchers working on important research questions of modern and ancient post-collisional extensional tectonics and will provide a formal discussion to help the researchers to design research methods to test them.
Primary Convener:  Rezene Mahatsente, University of Alabama, Geological Sciences, Tuscaloosa, AL, United States
Conveners:  Irina Filina, University of Nebraska Lincoln, Department of Earth and Atmospheric Sciences, Lincoln, NE, United States, Patricia Persaud, Louisiana State University, Department of Geology and Geophysics, Baton Rouge, United States and Matthew M. Wielicki, University of Alabama, Geological Sciences, Tuscaloosa, AL, United States
Primary Liaison:  Patricia Persaud, Louisiana State University, Department of Geology and Geophysics, Baton Rouge, United States
Chairs:  Ibrahim Cemen, University of Alabama, Geological Sciences, Tuscaloosa, AL, United States and Rezene Mahatsente, University of Alabama, Geological Sciences, Tuscaloosa, AL, United States
OSPA Liaison:  Matthew M. Wielicki, University of Alabama, Geological Sciences, Tuscaloosa, AL, United States
Index Terms:

8109 Continental tectonics: extensional [TECTONOPHYSICS]
8169 Sedimentary basin processes [TECTONOPHYSICS]
8177 Tectonics and climatic interactions [TECTONOPHYSICS]
8178 Tectonics and magmatism [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Cenozoic Post-Collisional Extension in Western Turkey (412449)
Ibrahim Cemen1, Osman Merey2, Seren Sert2, Rezene Mahatsente3 and Suleyman Alemdar2, (1)University of Alabama, Geological Sciences, Tuscaloosa, AL, United States, (2)Turkish Petroleum Corporation, Ankara, Turkey, (3)University of Louisiana at Lafayette, School of Geosciences, Lafayette,, United States
Evidence for dynamic relationship between faulting and Neogene-Quaternary volcanism in post-collisional Central Anatolia (Turkey): Implications for shallow slab subduction and rollback. (442094)
W. Kirk Schleiffarth1, Paul J Umhoefer2, Michael A Cosca3, Mary R Reid2, Jonathan R Delph4, Daniel Evan Portner5, Susan L Beck6, Bizhan Abgarmi7 and Arda Özacar7, (1)Northern Arizona University, School of Earth Sciences and Environmental Sustainability, Flagstaff, AZ, United States, (2)Northern Arizona Univ, Flagstaff, AZ, United States, (3)USGS, Denver, CO, United States, (4)Purdue University, Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, (5)University of North Carolina at Chapel Hill, Olney, United States, (6)University of Arizona, Department of Geosciences, Tucson, AZ, United States, (7)Middle East Technical University, Ankara, Turkey
Post-Collisional Lithospheric Structure and Isostasy of Eastern Anatolia: Implication for Delamination and Asthenospheric Underplating (402230)
Rezene Mahatsente1, Gökay Önal2 and Ibrahim Cemen1, (1)University of Alabama, Geological Sciences, Tuscaloosa, AL, United States, (2)Turkish Petroleum Corporation, Ankara, Turkey
Deciphering the exhumation history of the crystalline core of the Himalayas: new insight from garnet-bearing assemblages (Invited) (420233)
Elizabeth J Catlos, University of Texas at Austin, Earth and Planetary Sciences, Austin, TX, United States, Thomas M Etzel, ExxonMobil, Subsurface-HCS Modeling, Houston, TX, United States, C. S. Dubey, Normi Research Foundation, Gurgaon, India, Eric D Kelly, University of Texas at Austin, Austin, TX, United States, Richard A Marston, Kansas State Univ, Manhattan, KS, United States, Theresa J Perez, University of Texas at Austin, Jackson School of Geosciences, Austin, United States and Axel Karl Schmitt, University of Heidelberg, Institute of Earth Sciences, Heidelberg, Germany
Magnitude, distribution, and driving mechanisms of Basin and Range extension: insights from a province-wide cross section at 39°N (356451)
Sean P Long, Washington State University, School of the Environment, Pullman, WA, United States
Cenozoic thermal and topographic evolution of the northern Great Basin, western U.S. (Invited) (394761)
Jens-Erik Lundstern, Stanford University, Stanford, United States, Elizabeth L Miller, Stanford University, Stanford, CA, United States, C Page Chamberlain, Stanford University, Earth and Planetary Sciences Department, Stanford, United States and Andreas Mulch, Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Frankfurt, Germany
Exhumation of near-Moho deep crust in extending orogens (456911)
Christian P Teyssier1, Megan Korchinski2, Donna L Whitney1 and Patrice F Rey3, (1)University of Minnesota, Minneapolis, MN, United States, (2)University of Minnesota, Department of Earth and Environmental Sciences, Minneapolis, MN, United States, (3)Univ of Sydney, School of Geosciences, Sydney, Australia

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