T14A:
Eastern North American Margin: Multidisciplinary Studies

Submit an Abstract to this Session



Session ID#: 31252

Session Description:
The Eastern North American Margin (ENAM) records a complex geologic and tectonic history, encompassing two complete Wilson cycles from supercontinent assembly to breakup over the past ~1.3 billion years. It is an ideal, natural laboratory to examine the orogenic histories, the continental lithospheric behavior, and the interaction between crust and upper mantle beneath passive margins during episodes of collision and rifting. This session invites multidisciplinary contributions on the ENAM with new datasets, methods, models, and ideas. We particularly encourage contributions that integrate results from multiple disciplines that bear on the study of the 3-D geometry of this passive margin and its tectonic evolution. Topics may include but are not limited to understanding of the evolution and tectonic history of orogenic processes during collisions and rifting, the crustal and upper mantle structures and dynamics, the nature and origin of magmatic activity and links to tectonic processes and deep mantle dynamics.
Primary Convener:  Xiaotao Yang, University of Massachusetts Amherst, Department of Geosciences, Amherst, MA, United States
Conveners:  Cong Li, Southern University of Science and Technology, Department of Earth and Space Sciences, Shenzhen, China, Michael L Williams, University of Massachusetts Amherst, Department of Geosciences, Amherst, MA, United States and Vadim L Levin, Rutgers University, Earth and Planetary Sciences, Piscataway, United States
Chairs:  Michael L Williams1, Xiaotao Yang1, Cong Li2 and Vadim L Levin3, (1)University of Massachusetts Amherst, Department of Geosciences, Amherst, MA, United States(2)Southern University of Science and Technology, Department of Earth and Space Sciences, Shenzhen, China(3)Rutgers University, Earth and Planetary Sciences, Piscataway, United States
OSPA Liaison:  Xiaotao Yang, University of Massachusetts Amherst, Department of Geosciences, Amherst, MA, United States

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • GP - Geomagnetism, Paleomagnetism and Electromagnetism
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

8104 Continental margins: convergent [TECTONOPHYSICS]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]
8159 Rheology: crust and lithosphere [TECTONOPHYSICS]
8178 Tectonics and magmatism [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Inheritance vs ongoing evolution of the passive margin lithosphere in the southeastern United States: A comparison of <50Ma tectonism with tomographically imaged lithospheric structures. (273879)
Lara S Wagner, Carnegie Institution for Science, Earth and Planets Laboratory, Washington, United States, Karen M Fischer, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, United States, Robert B Hawman, University of Georgia, Department of Geology, Athens, GA, United States, Emily Hopper, Lamont -Doherty Earth Observatory, Palisades, NY, United States and Dorran Howell, ETH Zurich, Zurich, Switzerland
Seismological Constraints on Lithospheric Evolution in the Appalachian Orogen (285070)
Karen M Fischer, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, United States, Emily Hopper, Lamont -Doherty Earth Observatory, Palisades, NY, United States, Robert B Hawman, University of Georgia, Dept. of Geology, Athens, GA, United States and Lara S Wagner, Carnegie Institution for Science, Earth and Planets Laboratory, Washington, United States
Importance of flexure in response to sedimentation and erosion along the US Atlantic passive margin in reconciling sea level change and paleoshorelines (Invited) (295627)
Robert Moucha, Syracuse University, Earth and Environmental Sciences, Syracuse, United States, Gregory Ruetenik, Syracuse University, Syracuse, NY, United States and Bas de Boer, Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands
Extensional unroofing of the metamorphic core of the southern Appalachian orogen prior to the breakup of Pangea: Insights from 40Ar/39Ar thermochronology (217735)
Chong Ma, Auburn University, Geosciences, Auburn, AL, United States, David A Foster, University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States, Willis E Hames, Auburn University, Department of Geosciences, Auburn, United States and Paul A Mueller, University of Florida, Geological Sciences, Gainesville, FL, United States
From erosion to earthquakes: A geomorphic model for intraplate seismicity in post-orogenic settings (220765)
Sean F Gallen, ETH Swiss Federal Institute of Technology Zurich, Geological Institute, Zurich, Switzerland and Ryan Thigpen, University of Kentucky, Earth and Environmental Science, Lexington, KY, United States

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