T23C:
Multidisciplinary Advances in the Study of the Northern Cordillera of North America Posters

Submit an Abstract to this Session



Session ID#: 25691

Session Description:
The Northern Cordillera is a complex and enigmatic tectonic mosaic. We propose to bring together geoscientists engaged in multidisciplinary studies of slab window dynamics, insipient ridge subduction, ocean-continent transform faulting, and the collision of an oceanic plateau (Yakutat) into a continental margin. The session seeks to facilitate future investigations by examining results from diverse approaches that seek to understand stress transfer deep into continental interiors and how it produces distributed deformation across a zone >500 km wide. An increase in induced seismicity in the Cordilleran foreland, combined with natural seismicity, poses a significant hazard to infrastructure and highlights the need to better know its origins. Multi-scale integration of surficial processes with deeper lithospheric and mantle structures for understanding cordilleran dynamics will be of particular interest in this session. We seek contributions from broad sub-disciplines of geoscience focused on the Northern Cordillera, including surficial geology, geochronology, tectonics, geophysics, petrology, and geochemistry.

Primary Convener:  Andrew J Schaeffer, University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada
Conveners:  Kristin D Morell, University of California Santa Barbara, Department of Earth Science, Santa Barbara, CA, United States, Katherine Janet Elizabeth Boggs, Mount Royal University, Calgary, AB, Canada and Hersh J Gilbert, University of Calgary, Department of Geoscience, Calgary, AB, Canada
Chairs:  Katherine Janet Elizabeth Boggs, Mount Royal University, Calgary, AB, Canada and Kristin D Morell, University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States
OSPA Liaison:  Andrew J Schaeffer, University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada

Cross-Listed:
  • MR - Mineral and Rock Physics
  • NH - Natural Hazards
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

8104 Continental margins: convergent [TECTONOPHYSICS]
8107 Continental neotectonics [TECTONOPHYSICS]
8123 Dynamics: seismotectonics [TECTONOPHYSICS]
8164 Stresses: crust and lithosphere [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Applying Low Temperature Thermochronology to Constrain Exhumation Patterns along the Eastern Denali Fault Corner, Alaska (286319)
Thomas Stuart Warfel, Syracuse University, Syracuse, NY, United States, Paul G Fitzgerald, Syracuse University, Earth and Environmental Sciences, Syracuse, NY, United States, Jeff Benowitz, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States, Kenneth Ridgway, Purdue Univ, West Lafayette, IN, United States and Wai K Allen, Purdue University, West Lafayette, IN, United States
Tectonochemistry of the Brooks Range Ophiolite, Alaska (234727)
Joseph Biasi, California Institute of Technology, Geological and Planetary Sciences, Pasadena, United States, Paul D Asimow, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States and Ronald A Harris, Brigham Young Univ, Provo, UT, United States
Investigating the ancient landscape and Cenozoic drainage development of southern Yukon (Canada), through restoration modeling of the Cordilleran-scale Tintina Fault. (206764)
Lionel E Jackson1, Nathan Hayward2 and James J Ryan2, (1)Simon Fraser University, Burnaby, BC, Canada, (2)Geological Survey of Canada, Vancouver, BC, Canada
Geophysical reassessment of the role of ancient crustal structures on the development of western Laurentia and Selwyn Basin, Yukon and Northwest Territories, Canada. (209030)
Nathan Hayward, Geological Survey of Canada, Vancouver, BC, Canada
Tomographic Signatures of Ridge Subduction Along Western North America: Implications for Northern Cordillera Plate Tectonics Since the Cretaceous (257243)
Yi-An Lin, Texas Water Development Board, Austin, United States and Jonny Wu, university of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States
Cordilleran Longevity, Elevation and Heat Driven by Lithospheric Mantle Removal (285085)
Claire A Currie1, Alexander Mackay-Hill2, Pascal Audet2 and Andrew J Schaeffer2, (1)University of Alberta, Department of Physics, Edmonton, AB, Canada, (2)University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada
Mapping Curie depth in western Canada from a wavelet analysis of magnetic anomaly data (232648)
Élyse Gaudreau1, Pascal Audet2 and David A Schneider2, (1)University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada, (2)University of Ottawa, Earth and Environmental Sciences, Ottawa, ON, Canada
Geophysical constraints on the mantle structure of the Canadian Cordillera and North America Craton (218447)
Tai-Chieh Yu, Claire A Currie and Martyn Jonathan Unsworth, University of Alberta, Department of Physics, Edmonton, AB, Canada
Provenance of the exotic Northern Sierra terrane (North American Cordillera) based on U-Pb detrital zircon data (216886)
Vladislav Powerman, Schmidt Institute of Physics of the Earth RAS, Moscow, Russia; Kazan Federal University, Kazan, Tatarstan, Russia, Gary Girty, San Diego State University, San Diego, CA, United States, Richard E Hanson, Texas Christian University, Fort Worth, TX, United States, Marty Grove, Stanford University, Earth and Planetary Sciences, Stanford, United States, Elizabeth L Miller, Stanford University, Stanford, CA, United States and Jeremy K Hourigan, UC Santa Cruz, Santa Cruz, CA, United States

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