T31G:
The Varied Roles of Aqueous Fluids near the Subduction Interface II Posters


Submit an Abstract to this Session


Session ID#: 47101

Session Description:
Along the subduction plate interface, water influences the rheological and geophysical properties as well as the rates and products of metamorphic reactions. Recent geologic and seismic studies demonstrate that strong feedbacks exist between the fluid-mediated chemical and petrologic evolution of the rock, deformation processes that control fault slip behavior, and geophysical signals we use to interpret physical conditions at depth. Fluid distribution and flux are thought to vary with depth and the permeability structure near the plate interface. These fluids are proposed to control episodic tremor-and-slip, dehydration-induced seismicity, serpentinization of the mantle wedge, overriding plate alteration, and the 4-D evolution in interface bulk-rock compositions, active deformation mechanisms, and rock strength. We invite contributions addressing the varied influence of aqueous fluids near the subduction interface from across the Earth science community including, but not limited to: experimental studies, geodynamics, petrology/geochemistry, structural geology, and geophysics.
Primary Convener:  Cailey Brown Condit, Massachusetts Institute of Technology, Cambridge, MA, United States
Conveners:  Dr. Besim Dragovic, Ph.D., Boise State University, Department of Geosciences, Boise, ID, United States, Jonathan R Delph, Purdue University, Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States and Melodie E French, Rice University, Earth, Environmental and Planetary Sciences, Houston, TX, United States
Primary Liaison:  Cailey Brown Condit, Massachusetts Institute of Technology, Cambridge, MA, United States
Chairs:  Melodie E French, Rice University, Earth, Environmental and Planetary Sciences, Houston, TX, United States and Cailey Brown Condit, Massachusetts Institute of Technology, Cambridge, MA, United States
OSPA Liaison:  Cailey Brown Condit, Massachusetts Institute of Technology, Cambridge, MA, United States
Co-Organized with:
Tectonophysics, Mineral and Rock Physics, and Volcanology, Geochemistry and Petrology

Cross-Listed:
  • MR - Mineral and Rock Physics
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology

Proposed Co-Organized Session with:
  • MR - Mineral and Rock Physics
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

1031 Subduction zone processes [GEOCHEMISTRY]
7240 Subduction zones [SEISMOLOGY]
8045 Role of fluids [STRUCTURAL GEOLOGY]
8170 Subduction zone processes [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Assessing the Role of Water in Alaskan Flat-Slab Subduction Using Thermodynamic and Phase Equilibria Modeling Approaches (371921)
Sarah Elizabeth Robinson1, Ryan C Porter1 and Thomas D Hoisch2, (1)Northern Arizona University, Flagstaff, AZ, United States, (2)Northern Arizoina University, Flagstaff, AZ, United States
Tracing Geophysical Indicators of Fluid-Induced Serpentinization in the Pampean Flat-Slab of Central Chile (459549)
Alex Nikulin, Binghamton University, Department of Geological Sciences and Environmental Studies, Binghamton, United States, Jessica Domino, Binghamton University, Binghamton, NY, United States, James Robert Bourke, SUNY at Binghamton, Binghamton, United States and Jeffrey J Park, Yale University, Earth & Planetary Sciences, New Haven, CT, United States
Fluid Capture During Exhumation of Subducted Lithologies: A Fluid Inclusion Study from the Cycladic Blueschist Unit (Sifnos, Greece) (448290)
Dr. Besim Dragovic, Ph.D.1, Hanna L. Brooks2, Hector M Lamadrid3, Mark J Caddick4 and Robert J Bodnar4, (1)Boise State University, Boise, ID, United States, (2)Virginia Polytechnic Institute and State University, Blacksburg, United States, (3)Virginia Tech, Geosciences, Blacksburg, VA, United States, (4)Virginia Tech, Blacksburg, VA, United States
Tracing Fluid Infiltration and Resultant CO2 Release in Subducted Lithologies of the Cycladic Blueschist Unit, Greece (373959)
Emily M Stewart, Florida State University, Department of Earth,Ocean and Atmospheric Sciences, Tallahassee, United States and Jay James Ague, Yale University, Department of Earth & Planetary Sciences, New Haven, CT, United States
Destroying an eclogite: feedback between deformation and metamorphism at the blueschist-eclogite transition (392097)
Carly Faber, The Arctic University of Norway, Earth & Planetary Sciences, Tromsø, Norway and Christie D Rowe, Nevada Seismological Laboratory, Reno, United States
Fluid-rock interaction in subducted mélanges and its implications for fluid flow along the subduction plate boundary (400430)
Kazuya Noro1, Kohtaro Ujiie1, Naoki Nishiyama1, Yasushi Mori2 and Haruna Masuyama1, (1)University of Tsukuba, Tsukuba, Japan, (2)Kitakyushu Museum Natl & Human, Kitakyushu, Japan
Grain boundary sliding as an antigorite CPO formation mechanism and implications for the slab-mantle boundary rheology: Example of antigorite schist from the Sanbagawa belt, SW Japan (427813)
Takayoshi Nagaya, University of Southern California, Los Angeles, CA, United States; Tohoku University, Sendai, Japan and Simon Richard Wallis, The University of Tokyo, Bunkyo-ku, Japan
Detection of mantle-derived fluid from the Makimine mélange in the Shimanto accretionary complex: Evidence from helium isotope analysis on mineral veins (409496)
Naoki Nishiyama1, Hirochika Sumino2 and Kohtaro Ujiie1, (1)University of Tsukuba, Tsukuba, Japan, (2)Geochemical Research Center, Graduate School of Science, University of Tokyo, Tokyo, Japan
Insights on Rock Hybridization Processes at the Slab-Mantle Interface from an Exhumed high-pressure Serpentinite-Eclogite Contact in the Voltri Massif (Ligurian Alps, Italy) (468697)
Emmanuel Codillo, Woods Hole Oceanographic Institution, Woods Hole, United States, Frieder Klein, Woods Hole Oceanographic Inst., Department of Geology and Geophysics, Woods Hole, United States, Horst Marschall, Goethe University Frankfurt, Frankfurt am Main, Germany; Woods Hole Oceanographic Inst., Woods Hole, United States and Dr. Besim Dragovic, Ph.D., Boise State University, Department of Geosciences, Boise, ID, United States

See more of: Tectonophysics