T017
Structure, Tectonics, and Seismicity of Cratons
Session ID#: 249218
Session Description:
Cratons form the “stable” cores of continents. Recent studies from geological and geophysical data and geodynamic modeling provide evidence for significant structural and compositional modifications of the cratonic lithosphere. Tectonic features such as basins, rifts, faults, arches, and domes existing across cratons also require changes in the geodynamic states of the lithosphere “post-cratonization”. Abundant intraplate seismicity suggests that some of these structures are active today. Cratons provide an ideal setting to address a variety of topics on the dynamics and stability of continental lithosphere, most effectively through cross-disciplinary collaborations. This session aims to facilitate the sharing of new data and results across disciplines to help elucidate the structure, tectonics, earthquake hazards, and evolution of cratons. We invite contributions from multiple disciplines, including but not limited to geology, geophysics, geochemistry, rock physics, geochronology, tectonics, and geodynamics, with a particular interest in studies that cross disciplinary boundaries or temporal and spatial scales.
Co-Sponsor(s):
Index Terms:
1140 Thermochronology [GEOCHRONOLOGY]
7218 Lithosphere [SEISMOLOGY]
8002 Continental neotectonics [STRUCTURAL GEOLOGY]
8103 Continental cratons [TECTONOPHYSICS]
Primary Convener: Xiaotao Yang, Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States
Conveners: Riddhi Dave, Geological Survey of Canada Pacific Division, Vancouver, BC, Canada, Andrew J Schaeffer, Geological Survey of Canada, Pacific Division, Sidney, ON, Canada and Zebin Cao, IGG Institute of Geology and Geophysics, Chinese Academy of Sciences, State Key Laboratory of Lithospheric and Environmental Coevolution, Beijing, China
Student/Early Career Convener: Zebin Cao, IGG Institute of Geology and Geophysics, Chinese Academy of Sciences, State Key Laboratory of Lithospheric and Environmental Coevolution, Beijing, China
Late Mesozoic to Cenozoic Thermo-Tectonic Differential Exhumation of the Central Tan-Lu Fault Zone, Eastern North China Craton: Implications for Izanagi-Pacific Plate Subduction (1846474)
Lei Feng1, Nansheng Qiu1, Ruohong Jiao2, Taiyan Yu1 and Chenxing Li1, (1)China University of Petroleum, Beijing, China, (2)University of Victoria, Victoria, BC, Canada
Seismic full-waveform tomography of active cratonic thinning beneath North America consistent with Farallon slab-induced dripping (Invited) (1847063)
Junlin Hua, University of Texas at Austin, Jackson School of Geological Sciences, Austin, United States; University of Science and Technology of China, Laboratory of Seismology and Physics of Earth’s Interior, School of Earth and Space Sciences, Hefei, China, Stephen P Grand, University of Texas, Austin, United States, Thorsten W Becker, University of Texas at Austin, Jackson School of Geosciences, Austin, United States, Helen A Janiszewski, University of Hawaii at Manoa, Department of Earth Sciences, Honolulu, United States, Chujie Liu, University of Texas at Austin, Austin, United States, Daniel T Trugman, University of Nevada Reno, Nevada Seismological Laboratory, Reno, United States and Hejun Zhu, Southern University of Science and Technology, Department of Earth and Space Sciences, Shenzhen, China
Crustal Structure Underneath South Carolina Determined by Receiver Functions (1875532)
Ademar Fernandez1, Daniel Andrew Frost1, Federico Daniel Munch2, Shubham Agrawal1 and H. Philip Crotwell1, (1)University of South Carolina, School of Earth, Ocean and Environment, Columbia, United States, (2)Institute of Geophysics, ETH Zurich, Zurich, Switzerland
Possible Tectonic Escape in the Yellow Sea: Evidence from Local Tomography, Pn Anisotropy, and Attenuation Results (1876363)
Yanbing Liu1, Tae-Kyung Hong2, Junhyung Lee2, Seongjun Park2, Samuel Celis1, Byeongwoo Kim2, Jeongin Lee2 and Dong Geon KIM2, (1)Yonsei University, Seoul, Korea, Republic of (South), (2)Yonsei University, Earth System Sciences, Seoul, South Korea
Characterization of lithospheric modification below the North American midcontinent (1894085)
Xiaotao Yang1, Andrea Stevens Goddard2, Lijun Liu3, Haoyu Li1, Kenneth Ridgway4 and Stephen Marshak5, (1)Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, (2)Indiana University Bloomington, Department of Earth and Atmospheric Sciences, Bloomington, United States, (3)Institute of Geology and Geophysics, Chinese Academy of Science, State Key Laboratory of Lithospheric Evolution, Beijing, China, (4)Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, United States, (5)University of Illinois, Champaign, United States
Layered cratonic lithosphere: from regional scales to global perspectives (1903044)
Yiran Huang1, Colleen A Dalton1 and Karen M Fischer2, (1)Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States, (2)Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, United States
Investigating the southeastern margin of the Gawler Craton with SNAKEY (1904875)
Caroline M Eakin1, Robert Pickle1, John Paul O'Donnell2, Sankarshan Mondal3 and Miriam Gauntlett1, (1)Australian National University, Canberra, ACT, Australia, (2)Geological Survey of South Australia, Adelaide, Australia, (3)Australian National University, Canberra, Australia
Crustal Structure beneath the Archean Dharwar Craton and Proterozoic Cuddapah Basin, South India: Insights from surface waves and gravity data modelling (1918176)
Vivek Kumar1, Shyam Sundar Rai2, Manojkumar Jakkampudi1, Srinivasa RAO Gangumalla1 and Thomas Bodin3, (1)Indian Institute of Technology Bombay, Mumbai, India, (2)Indian Institute of Science Education and Research Pune, Earth and Climate Science, Pune, India, (3)Univ Lyon, Université Claude Bernard Lyon 1, ENSL, UJM, CNRS, Laboratoire de Géologie de Lyon: Terre, Planètes, Environnement, Villeurbanne Cedex, France
Structural Interpretation and Geologic Map of the Mexican Hill Quadrangle, Northwestern Bighorn Mountains, Wyoming, USA (1922463)
Jessica Johns1, Jennifer Gifford1, Brian F. Platt1 and Lance D Yarbrough2, (1)University of Mississippi Main Campus, Geology and Geological Engineering, University, United States, (2)University of Mississippi, Geology & Geological Engineering, Oxford, MS, United States
New Constraints on Crustal Structure in Sparsely Instrumented Western Africa and Adjacent Islands from joint P-wave Receiver function HV ratio and surface wave measurements (1934706)
Abayomi Osotuyi, Obafemi Awolowo University, Earthquake and Space Weather Laboratory, Geology Department, Ile Ife, Nigeria; Southern University of Science and Technology, Ocean Science and Engineering, Shenzhen, China, Sidao Ni, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China, Chong Jiajun, CAS Chinese Academy of Sciences, Innovation Academy for Precision Measurement Science and Technology, Wuhan, China, Zhen Guo, Southern University of Science and Technology, Department of Ocean Science and Engineering, Shenzhen, China, Dele Falebita, Obafemi Awolowo University, Earthquake and Space Weather Laboratory, Geology Department,, Ile Ife, Nigeria and John Somiah, Sun Yat-Sen University, School of Earth Sciences and Engineering, Zhuhai Campus, China
Radial Anisotropy beneath the North American Midcontinent (1956618)
Haoyu Li1, Xiaotao Yang1, Brandon Herr2, Bin He3, Lijun Liu4 and Andrea Stevens Goddard5, (1)Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, (2)Rice University, Houston, United States, (3)Purdue University, Earth, Atmospheric, and Planetary Sciences, West Lafayette, United States, (4)Institute of Geology and Geophysics, Chinese Academy of Science, State Key Laboratory of Lithospheric Evolution, Beijing, China, (5)Indiana University Bloomington, Department of Earth and Atmospheric Sciences, Bloomington, United States
Frequency‐dependent Lg coda attenuation in the northeastern United States and Canada: Insights into the thermal structure and tectonic configuration of the upper crust (1959609)
James Robert Bourke, Yale University, New Haven, United States, Maureen D Long, Yale University, Department of Earth & Planetary Sciences, New Haven, CT, United States and Paul Karabinos, Williams College, 18 Hoxsey St. Department of Geosciences, Williamstown, United States
