T059
The tectonic fabric of the seafloor: Propagators, microplates and beyond
Session ID#: 82909
Session Description:
Seafloor mapping played a key role in the plate tectonic revolution, providing insights into the morphology, structure and age distribution of oceanic crust. Decades of research has revealed the structure of mid-ocean ridges and fracture zones, as well as less prominent features such as propagating rifts and detachment faults. Such observations have helped us understand major geodynamic and geological processes and unravel the histories of entire ocean basins. Over the past 10y, the accuracy/resolution of satellite-derived seafloor and gravity anomaly maps has greatly improved, uncovering an abundance of “lower order” seafloor features which represent fundamental tectonic processes, but remain poorly understood. Moreover, high-resolution marine geophysical surveys continue to advance our understanding of many seafloor features/processes with unprecedented detail. We invite contributions focusing on observations and interpretation of seafloor features at local, regional or global scale and welcome studies which investigate previously poorly understood features by combining a variety of methodologies.
Co-Organized:
Index Terms:
3038 Oceanic plateaus and microcontinents [MARINE GEOLOGY AND GEOPHYSICS]
3039 Oceanic transform and fracture zone processes [MARINE GEOLOGY AND GEOPHYSICS]
3040 Plate tectonics [MARINE GEOLOGY AND GEOPHYSICS]
3045 Seafloor morphology, geology, and geophysics [MARINE GEOLOGY AND GEOPHYSICS]
Primary Convener: Brook Tozer, Scripps Institution of Oceanography, La Jolla, CA, United States
Conveners: Ross Parnell-Turner, Scripps Institution of Oceanography, La Jolla, United States, Vicki Lynn Ferrini, LDEO, Palisades, NY, United States and Paul Wessel, Univ Hawaii, Honolulu, HI, United States
Primary Liaison: Brook Tozer, Scripps Institution of Oceanography, La Jolla, CA, United States
The Morphology and Tectonic Interpretation of “See-saw” Propagators (519426)
Hugh Harper1, Brook Tozer1, Ross Parnell-Turner2 and David T Sandwell3, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Scripps Institution of Oceanography, La Jolla, United States, (3)Scripps Institution of Oceanography, Institute of Geophysics and Planetary Physics, La Jolla, CA, United States
Fracture mechanics controls on mid-ocean ridge segmentation: insights from laboratory experiments (Invited) (574503)
Aurore Sibrant, Univ Brest, Laboratoire Géoscience Océan, Plouzané, France, Anne Davaille, CNRS/Univ Paris-Sud/Univ Paris Saclay, Laboratoire FAST, Orsay cedex, France and Eric L Mittelstaedt, University of Idaho Library, Moscow, ID, United States
Insights on oceanic core complex formation derived from quantitative structural restorations of examples from the Atlantic and Indian Oceans (602305)
Bryan Moore, University of Houston, Earth and Atmospheric Sciences, Houston, TX, United States and Paul Paul Mann, University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States
The South Apulia Fault System (SAFS) in the central Mediterranean Sea: a needle in a haystack? (492839)
Francesco Emanuele Maesano1, Valentina Volpi2, Dario Civile2, Alessia Conti3, Mara Monica Tiberti1, Daniela Accettella2, Rudy Conte2, Fabrizio Zgur2, Roberto Basili4 and Giuliana Rossi2, (1)Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy, (2)National Institute of Oceanography and Applied Geophysics OGS, Trieste, Italy, (3)Sapienza Università di Roma, Roma, Italy, (4)Istituto Nazionale Geofisica e Vulcanologia, Roma, Italy
Discrete Characterization of Abyssal Hills: Unraveling Temporal Variations in Crustal Accretion Processes at the 10º30’N Segment, East Pacific Rise (493865)
Shai Roth, Ben-Gurion University of the Negev, Beer Sheva, Israel, Roi Granot, Ben-Gurion University, Department of Geological and Environmental Sciences, Beer Sheva, Israel and Nathan Downey, Sandia National Laboratories, Albuquerque, NM, United States
Variations in crustal structure in the region of the Galapagos triple junction (494120)
Tingting Zheng, Tongji University, Shanghai, China, Jian Lin, Woods Hole Oceanographic Inst, G & G, Woods Hole, MA, United States, Hans Schouten, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Deborah K Smith, National Science Foundation, Arlington, VA, United States, Ross E Parnell-Turner, Scripps Institution of Oceanography, La Jolla, United States, Brian E Tucholke, Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA, United States, Johnson R Cann, University of Leeds, Leeds, United Kingdom and Emily M Klein, Duke University, Durham, NC, United States
A Re-evaluation of Tectonic Plate Boundaries Based on Recent Satellite and Earthquake Data (502089)
John Yu1, Warren T Wood1 and Benjamin J Phrampus2, (1)Naval Research Laboratory, Stennis Space Ctr, MS, United States, (2)US Naval Research Laboratory, Geology and Geophysics, Stennis Space Center, MS, United States
Geophysical Framework of the Extinct Jurassic Spreading Center in the Gulf of Mexico: An Integration of Marine Seismic Reflection, Refraction, and Gravity Data (507482)
Mei Liu, University of Houston, Houston, TX, United States, Dale E Bird, Bird Geophysical, Houston, TX, United States and Paul Paul Mann, University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States
Formation of the Galapagos Microplate and its Effect on Rifting at the Galapagos Triple Junction (510255)
Deborah K Smith1, Hans Schouten2, Emily M Klein3, Benjamin W Wernette3, Ross Parnell-Turner4, Johnson R Cann5 and Tingting Zheng6, (1)National Science Foundation, Alexandria, VA, United States, (2)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (3)Duke University, Durham, NC, United States, (4)Scripps Institution of Oceanography, La Jolla, United States, (5)University of Leeds, Leeds, United Kingdom, (6)State Key Laboratory of Marine Geology, School of Ocean and Earth Science, Tongji University, Shanghai, China
The Seafloor Fabrics and Evolution of a Propagated Rift System in the South China Sea (511776)
Shu-Kun Hsu, National Central University, Department of Earth Sciences, Kanagawa, Japan, Leo T Armada, University of the Philippines, National Institute of Geological Sciences, Quezon, Philippines, Yi-Ching Yeh, Department of Earth Sciences, National Central University, Taoyuan City, Taiwan, Carla B. Dimalanta, National Institute of Geological Sciences, University of the Philippines, Quezon City, Philippines, Ching-hui Tsai, National Central University, Center for Environmental Studies, Jhongli, Taiwan and Teresito Bacolcol, Philippine Institute of Volcanology and Seismology, Quezon City, Philippines
Comparison of the Tectonic Fabric and Crustal Scale Signatures of Non-transform Ridge-axis Discontinuities in Oceanic Crust. (Invited) (511877)
Suzanne M Carbotte, Lamont -Doherty Earth Observatory, Palisades, NY, United States, Bridgit Boulahanis, Columbia University of New York, Palisades, NY, United States, Mladen R Nedimovic, Dahousie University, Halifax, NS, Canada and Juan Pablo Canales, Woods Hole Oceanographic Inst, Geology and Geophysics, Woods Hole, MA, United States
