T13D:
Whose Fault Is It? Relating Structural and Compositional Heterogeneity to Slip Behavior II Posters


Submit an Abstract to this Session


Session ID#: 49102

Session Description:
Large plate boundary fault systems are commonly rheologically segmented both along strike and down dip, including across the transition from seismic to aseismic shear displacement. In addition to thermal controls, these variations in slip style may arise due to geometric or compositional heterogeneities along the fault zone. Many questions remain on the relationships between structure and fault behavior. For example, how does rupture propagation interact with roughness or material properties along a fault at a range of slip rates? How does this impact the global variability in seismic behavior at plate boundaries? In this session, we will highlight recent advances in characterizing observed structures, geophysical properties, lithologies, and slip behaviors at plate boundary faults at a range of scales, with a focus on relationships between these features. We encourage submissions from seismology, magnetotellurics, geodesy, earthquake rupture modeling, structural geology, fault zone drilling, and experimental work.
Primary Convener:  Hannah S Rabinowitz, Brown University, Providence, RI, United States
Conveners:  Helen A Janiszewski, Carnegie Institution for Science, Department of Terrestrial Magnetism, Washington, DC, United States, Ake Fagereng, Cardiff University, Cardiff, CF24, United Kingdom and Samer Naif, Lamont -Doherty Earth Observatory, Palisades, NY, United States
Primary Liaison:  Hannah S Rabinowitz, Brown University, Providence, RI, United States
Chairs:  Hannah S Rabinowitz, Columbia University in the City of New York, New York, NY, United States, Helen A Janiszewski, University of Hawaii at Manoa, Department of Earth Sciences, Honolulu, HI, United States and Ake Fagereng, Cardiff University, Department of Earth and Environmental Sciences, Cardiff, United Kingdom
OSPA Liaison:  Samer Naif, Scripps Institution of Oceanography, La Jolla, United States
Co-Organized with:
Tectonophysics, SPA-Magnetospheric Physics, Mineral and Rock Physics, and Seismology

Proposed Co-Organized Session with:
  • MR - Mineral and Rock Physics
  • S - Seismology
  • SM - SPA-Magnetospheric Physics
Index Terms:

1209 Tectonic deformation [GEODESY AND GRAVITY]
7230 Seismicity and tectonics [SEISMOLOGY]
8118 Dynamics and mechanics of faulting [TECTONOPHYSICS]
8163 Rheology and friction of fault zones [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Turning Up the Heat: What Biomarker Thermal Maturity Can Tell Us About Earthquakes on the San Andreas Fault (395021)
Genevieve L Coffey, Lamont -Doherty Earth Observatory, Palisades, United States, Heather M Savage, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States and Pratigya J Polissar, Lamont-Doherty Earth Observatory, Palisades, United States
Nanotextural and nanochemical constraints on the role of heat in development of crystalline-hosted, silica-rich fault mirrors in the Wasatch fault damage zone, Utah, USA (355140)
Leah M Houser, Utah State University, Department of Geology, Logan, UT, United States, Alexis K Ault, Utah State University, Department of Geosciences, Logan, UT, United States and Fen-Ann Shen, Utah State University, Microscopy Core Facility, Logan, UT, United States
Stressed Out at the Border: Geological Observations and Models of Elevated Stresses along the Boundaries of Strong Lithologies in Shallow and Deep Mélanges (370931)
Rellie Goddard1, Christie D Rowe2, Kohtaro Ujiie3 and Erik Young1, (1)McGill University, Montreal, QC, Canada, (2)Nevada Seismological Laboratory, Reno, United States, (3)University of Tsukuba, Tsukuba, Japan
Deformation of serpentinised mantle of the Southern Troodos Transform Fault Zone, Cyprus: Implications for slip behaviour of oceanic transform faults (390213)
Sophie Cox1, Ake Fagereng1 and Christopher J MacLeod2, (1)Cardiff University, Cardiff, CF24, United Kingdom, (2)Cardiff University, Cardiff, United Kingdom
Serpentinite slickenfibres: analogues for small repeating earthquakes at the slab-mantle interface? (426929)
Steven A.F. Smith1, Samantha J. Allan2, Matthew Tarling1, Marshall Palmer2 and Marianne Negrini3, (1)University of Otago, Dunedin, New Zealand, (2)University of Otago, Geology Department, Dunedin, New Zealand, (3)Universitetet i Tromso, 9037 Troms0, Norway
Advances in submicron Raman spectroscopy mapping of serpentinite fault rocks (458845)
Jeremy S. Rooney1, Matthew Tarling2, Steven A.F. Smith2, Matteo Demurtas3, Marianne Negrini4, Cecilia Viti5 and Keith C. Gordon2, (1)McGill University, Earth and Planetary Sciences, Montreal, QC, Canada, (2)University of Otago, Dunedin, New Zealand, (3)Padua University, Dipartimento di Geoscienze, Padua, Italy, (4)Universitetet i Tromso, 9037 Troms0, Norway, (5)Università degli Studi di Siena, Dipartimento di Scienze Fisiche, della Terra e dell’Ambiente, Siena, Italy
Empirical observations and mechanical implications of fault displacement vectors within a complex fault system in the Taranaki Basin, New Zealand (459774)
Amanda N Hughes and Daniel Favorito, University of Arizona, Department of Geosciences, Tucson, AZ, United States
Impacts of Fault Geometry on Earthquake Slip Model (429511)
Yong Zhang, Peking University, Beijing, China and Yueyi Xu, Institute of Earthquake Forecasting, China Earthquake Administration, Beijing, China
Uncovering the physical controls of episodic tremor and slip events using machine learning (436497)
Morgan Elyse McLellan, University of Ottawa, Ottawa, ON, Canada and Pascal Audet, University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada
Seismic moment variations of the San Andreas Fault System: Exploring sensitivity of crustal rheology in southern California (437858)
Lauren Ann Ward, University of Hawaii at Manoa, Earth and Planetary Sciences, Honolulu, HI, United States, Bridget R Smith-Konter, University of Hawaiʻi at Mānoa, Earth and Planetary Sciences, Honolulu, United States, Justin T Higa, University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, CA, United States, Xiaohua Xu, University of Texas, Institute for Geophysics, Austin, United States, Xiaopeng Tong, IGPP, SIO, UCSD, La Jolla, CA, United States and David T Sandwell, Scripps Institution of Oceanography, University of California San Diego, Institute of Geophysics and Planetary Physics, La Jolla, United States

See more of: Tectonophysics