T41F:
Linking Surface and Upper Crustal Kinematics to Deeper Crust and Mantle Flow in Collisions II

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Session ID#: 16567

Session Description:
Structural, chronological, geomorphic and geodetic studies of near surface kinematics in active orogens show a range of behaviors, including fold–thrust belts, footwall duplexing, major strike-slip shear, plateaus, extensional collapse of unsupported topography, and upwards extrusion of material from the deeper crust. 

The extent to which the colliding lithospheres underneath force or follow these patterns is not well understood. In active orogens, flow at deeper levels must be inferred from geophysical datasets. The internal regions of ancient orogens reveal deeper patterns of deformation and metamorphism, but how these linked to surface movements is difficult to interpret. Numerical simulations are often used to test limiting cases.

We invite contributions from any discipline that explores how flow is coupled both vertically and laterally in the lithosphere during orogeny. Participants are encouraged to consider how their work illuminates connections between kinematics and mass transfer from the deepest to the shallowest levels of collisions.
Primary Convener:  David J Young, Ohio State University, Columbus, OH, United States
Conveners:  Alison R Duvall, University of Washington, Earth and Space Sciences, Seattle, United States and Rebecca O Bendick, University of Montana, Geosciences, Missoula, MT, United States
Chairs:  Alison R Duvall, University of Washington, Earth and Space Sciences, Seattle, United States, David J Young, Ohio State University, Columbus, OH, United States and Rebecca O Bendick, University of Montana, Geosciences, Missoula, MT, United States
OSPA Liaison:  David J Young, Ohio State University, Columbus, OH, United States

Cross-Listed:
  • EP - Earth and Planetary Surface Processes
  • G - Geodesy
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

0905 Continental structures [EXPLORATION GEOPHYSICS]
1209 Tectonic deformation [GEODESY AND GRAVITY]
8011 Kinematics of crustal and mantle deformation [STRUCTURAL GEOLOGY]
8110 Continental tectonics: general [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Deformation in the mantle wedge associated with Laramide flat-slab subduction and implications for surface deformation during the Laramide orogeny (Invited) (158501)
Whitney M Behr, Structural Geology & Tectonics Group, Dept. of Earth & Planetary Sciences, ETH Zürich, Zürich, Switzerland and Douglas Smith, University of Texas at Austin, Austin, TX, United States
The Underthrusting of the Continental Lithosphere After Slab Break-off (149004)
Valentina Magni, University of Oslo, CEED, Oslo, Norway, Mark Benedict Allen, Durham University, Department of Earth Sciences, Durham, United Kingdom, Jeroen Van Hunen, University of Durham, Department of Earth Sciences, Durham, United Kingdom and Pierre Bouilhol, University of Durham, Durham, United Kingdom
Decoupled Upper and Lower Crustal Deformation Mechanisms in the Pamir Mountains: Implications for Lower Crustal Flow in Orogenic Plateaus (136923)
James Chapman1, Alexander C Robinson2, Barbara Carrapa3, Paul A Kapp4, James Worthington1, Dustin Patrick Villarreal2, Mustafo Gadoev5 and Ilhomjon Oimahmadov5, (1)University of Arizona, Tucson, AZ, United States, (2)University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States, (3)University of Arizona, Geosciences, Tucson, United States, (4)University of Arizona, Department of Geosciences, Tucson, AZ, United States, (5)Earthquake Enginering and Seismology, Academy of the Republic of Tajikistan, Institute of Geology, Dushanbe, Tajikistan
North American Cordillera-wide lower crustal channel flow (163922)
Roy D Hyndman, Geological Survey of Canada Sidney, Sidney, BC, Canada
The Influence of Frontal and Lateral Ramps in Fold Thrust Belts on Structural Architecture and Erosion (188497)
Delores Robinson, University of Alabama, Tuscaloosa, AL, United States and Nadine McQuarrie, University of Pittsburgh, Pittsburgh, PA, United States
Episodic Growth of Orogenic Plateau: Insights from 3-D Thermo-Mechanical Modeling (117720)
Lin Chen, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China and Taras Gerya, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland
Identification of mantle upwelling in north China through the joint analysis of SKS and surface deformation data (Invited) (166764)
Lucy M Flesch, Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, Lijun Chang, Institute of Geophysics, China Eathquake Administration, Haidain District, China, Chun-Yong Wang, Institute of Geophysics, China Eathquake Administration, Beijing, China and Zhifeng Ding, Institute of Geophysics, China Earthquake Administration, Beijing, China
A subducting slab dynamics hypothesis for Himalayan mountain building, asymmetric arc curvature, convergence slowdown, and climatic forcing (170303)
A Alexander G G Webb1, Hongcheng Guo2, Prof. Peter Dominic Clift, MA, PhD, DSc3, Laurent Husson4, Thomas Mueller5, Diego Costantino6, An Yin7, Zhiqin Xu8, Hui Cao8 and Qin Wang9, (1)University of Hong Kong, Hong Kong, Hong Kong, (2)Louisiana State University, Baton Rouge, LA, United States, (3)Louisiana State University, Department of Geology and Geophysics, Baton Rouge, United States, (4)Université Grenoble Alpes, ISTerre, Grenoble, France, (5)University of Leeds, School of Earth and Environment, Leeds, United Kingdom, (6)University of Leeds, Leeds, United Kingdom, (7)University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States, (8)CAGS Chinese Academy of Geological Sciences, Beijing, China, (9)School of Earth Sciences and Engineering, Nanjing University, Nanjing, China

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