V019:
Melt generation, transport, and extraction in the on- and off-axis mid-ocean ridge environment

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Session ID#: 24174

Session Description:
Observations of volcanic construction, geophysical data analysis, and characterizations of the petrological and geochemical variation of extruded lavas all provide critical insight into melting processes at mid-ocean ridge systems. This session will bring together multi-disciplinary observations and modeling efforts to investigate melt generation and migration in an effort to better understand the formation and evolution of oceanic crust and lithosphere. Topics include, but are not limited to: on-axis magma chamber processes, crustal accretion and volcanism; the development and evolution of off-axis magma bodies; near-axis and flank volcanism; near-axis seamount formation and evolution; volcanism along oceanic transform faults; investigations of ophiolites; and tectonic windows into the melting processes. We encourage insights gained structural/tectonic analyses, volcano morphology, geophysical imaging, petrology, geochemistry, and geodynamic and petrologic models of mantle melting at mid-ocean ridges.
Primary Convener:  Patricia M Gregg, University of Illinois at Urbana Champaign, Urbana, IL, United States
Conveners:  V. Dorsey Wanless, Boise State University, Dept. of Geosciences, Boise, ID, United States, Michael R Perfit, University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States and Meghan Jones, Massachusetts Institute of Technology, Cambridge, MA, United States
Co-Organized with:
Volcanology, Geochemistry and Petrology, and Ocean Sciences

Cross-Listed:
  • OS - Ocean Sciences
  • T - Tectonophysics
Index Terms:

1037 Magma genesis and partial melting [GEOCHEMISTRY]
3075 Submarine tectonics and volcanism [MARINE GEOLOGY AND GEOPHYSICS]
3618 Magma chamber processes [MINERALOGY AND PETROLOGY]
8416 Mid-oceanic ridge processes [VOLCANOLOGY]

Abstracts Submitted to this Session:

Barbara E John1, Michael J Cheadle1, Jeffrey S Gee2, Laurence A Coogan3, Kathryn M Gillis4 and PMaG Shipboard Scientists, (1)University of Wyoming, Laramie, WY, United States, (2)Univ California San Diego, La Jolla, CA, United States, (3)University of Victoria, Victoria, BC, Canada, (4)Univ Victoria, Victoria, BC, Canada
Laurent Montesi, University of Maryland College Park, College Park, MD, United States, Valentina Magni, University of Oslo, CEED, Oslo, Norway and Carmen Gaina, University of Oslo, Centre for Earth Evolution and Dynamics (CEED), Oslo, Norway
Milena Marjanovic1, Alexandre Stopin2, René-Edouard Plessix2 and Satish Chandra Singh1, (1)Institut de Physique du Globe de Paris, Paris, France, (2)Shell International, Amsterdam, Netherlands
Shuying Yang, Munir Humayun and Vincent J M Salters, Florida State University, Dept. of EOAS & National High Magnetic Field Laboratory, Tallahassee, FL, United States
Vera S N Schlindwein, Florian Schmid and Michaela Meier, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
Liu Chiheng, Li Jianghai, Liu Zhonglan, Zhang Huatian and Fan Qingkai, Peking University, Beijing, China
Michaela Meier, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany and Vera S N Schlindwein, Alfred Wegener Institute, Bremerhaven, Germany
John Goff, University of Texas at Austin, Austin, TX, United States, Sabin Zahirovic, The University of Sydney, Sydney, NSW, Australia and Dietmar Müller, Univ Sydney, Sydney, Australia