V51D:
Melt Generation, Transport, and Extraction in the On- and Off-Axis Mid-Ocean Ridge Environment III Posters

Submit an Abstract to this Session



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, Department of Geosciences, Boise, United States, Michael R Perfit, University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States and Max Jones, Massachusetts Institute of Technology, Cambridge, MA, United States
Chairs:  V. Dorsey Wanless, Boise State University, Department of Geosciences, Boise, United States, Patricia M Gregg, University of Illinois at Urbana-Champaign, Urbana, IL, United States, Max Jones, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Michael R Perfit, University of Florida, Department of Geological Sciences, Gainesville, United States
OSPA Liaison:  V. Dorsey Wanless, Boise State University, Department of Geosciences, Boise, 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:

The Ge/Si ratio quantifies the role of recycled crust in the generation of MORBs (215828)
Shuying Yang1, Munir Humayun1 and Vincent J M Salters2, (1)Florida State University, Dept. of EOAS & National High Magnetic Field Laboratory, Tallahassee, FL, United States, (2)Florida State University, Department of Earth, Ocean and Atmospheric Sciences & National High Magnetic Field Laboratory, Tallahassee, United States
Zircon U-Pb age and Hf-O isotopes of felsic rocks from the Atlantis Bank, Southwest Indian Ridge (227565)
Chuan-Zhou Liu, Institute of Geology and Geophysics, Chinese Academy of Sciences, State Key Laboratory of Lithospheric Evolution, Beijing, China and Wei-Qi Zhang, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
Plagiogranites in Suture Zones: the Case of the Cuyano Proto-Ocean in the Lower Paleozoic Southwestern Gondwana Margin, Argentina (232899)
SOFIA BEATRIZ Perez Lujan1, Florencia L. Boedo2, Juan P. Ariza3, Patricia M Alvarado1 and Graciela I Vujovich2, (1)CIGEOBIO (CONICET, Universidad Nacional de San Juan), Departamento de Geofísica y Astronomía, FCEFN, San Juan, Argentina, (2)Instituto de Estudios Andinos Don Pablo Groeber (UBA-CONICET), Departamento de Geología, FCEN, Buenos Aires, Argentina, (3)Instituto Geofísico Sismológico Volponi - CONICET, San Juan, Argentina
Features and petrogenesis of ultraphyric and aphanic basalts at 50 °E and 64 °E of the Southwest Indian Ocean Ridge (249325)
Xin Su1, Maokang Hu1, Shihui Lv1, Huaiming Li2 and Chunhui Tao3, (1)China University of Geosciences, School of Ocean Sciences, Beijing, China, (2)The Second Institute of Oceanography,State Oceanic Administration, Key Laboratory of Submarine Geosciences, Hangzhou, China, (3)Key Laboratory of Submarine Geosciences, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China
First Nd-Hf isotope evidence for ultra depleted melts in MOR-type replacive mantle bodies (250473)
Alessio Sanfilippo1, Sonia Botticchio1, Vincent J M Salters2, Riccardo Tribuzio1 and Alberto Zanetti3, (1)University of Pavia, Pavia, Italy, (2)Florida State University, Department of Earth, Ocean and Atmospheric Sciences & National High Magnetic Field Laboratory, Tallahassee, United States, (3)CNR, Pavia, Italy
Role of mantle source heterogeneity and melt/rock reaction in the formation of Jurassic MORB-type basalts (Alpine ophiolites) (251641)
Maria Rosaria Renna, Università degli Studi di Messina, Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Messina, Italy, Riccardo Tribuzio, University of Pavia, Pavia, Italy and Alessio Sanfilippo, University of Pavia, Department of Earth and Environmental Sciences, Pavia, Italy
The Isotopic Record From Monogenetic Seamounts: Insights Into Recycling Time Scales In The Upper Mantle (261400)
Pilar Madrigal, University of Costa Rica, San Jose, Costa Rica and Esteban Gazel, Cornell University, Department of Earth and Atmospheric Sciences, Ithaca, United States
The record of mantle heterogeneity preserved in Earth’s oceanic crust (281283)
Kevin W Burton1, Ian J. Parkinson2, Pierre Schiano3, Abdelmouhcine Gannoun4 and Muriel Laubier4, (1)Durham University, Durham, United Kingdom, (2)University of Bristol, School of Earth Sciences, Bristol, United Kingdom, (3)Laboratoire Magmas et Volcans, Université Clermont Auvergne, Aubière, France, (4)Laboratoire Magmas et Volcans, Clermont-Ferrand Cedex, France
Major and trace element and volatile constraints on magma systematics of seamounts and axial ridge glasses from the East Pacific Rise between 8°N and 12°N (264301)
Marion L Lytle, Boise State University, Dept. of Geosciences, Boise, ID, United States, Katherine A Kelley, Graduate School of Oceanography, University of Rhode Island, Narragansett, RI, United States, V. Dorsey Wanless, Boise State University, Department of Geosciences, Boise, United States and Erik H Hauri, Carnegie Inst Washington, Washington, DC, United States
Petrology of forearc basalt-related isotropic gabbros from the Bonin Ridge, Izu-Bonin forearc (258664)
Sara Elizabeth Garcia, University of Texas at Arlington, Arlington, TX, United States, Matthew Phillip Loocke, University of Texas at Arlington, Shimadzu Center for Environmental, Forensics and Material Science, Arlington, United States and Jonathan E Snow, Louisiana State University, Department of Geology & Geophysics, Baton Rouge, United States
Occurrence of high-Al N-MORB along the Easternmost Southwest Indian Ridge (252431)
Christine Marie Meyzen, Organization Not Listed, Padova, Italy; Università degli Studi di Padova, Dipartimento di Geoscienze, Padova, Italy, Eric Humler, Université de Nantes, Laboratoire de Planétologie et Géodynamique - UMR CNRS6 112, Nantes, France and John N Ludden, British Geological Survey, UK, Nottingham, United Kingdom
Pito Seamount revisited: the discovery and mapping of new black smoker vents (237574)
Michael J Cheadle1, Barbara E John1, Christopher R German2, Jeffrey S Gee3, Laurence A Coogan4, Kathryn M Gillis5, Susan Swapp6 and PMaG Science Party, and the Jason and Sentry ROV teams, (1)University of Wyoming, Geology & Geophysics, Laramie, United States, (2)WHOI, Woods Hole, MA, United States, (3)Univ California San Diego, La Jolla, CA, United States, (4)University of Victoria, Victoria, BC, Canada, (5)Univ Victoria, Victoria, BC, Canada, (6)University of Wyoming, Laramie, United States
Off-Axis Seamount Lavas at 8°20’ N Span the Entire Range of East Pacific Rise MORB Compositions (246523)
Molly Anderson, Boise State University, Boise, ID, United States, V. Dorsey Wanless, Boise State University, Department of Geosciences, Boise, United States, Michael R Perfit, University of Florida, Department of Geological Sciences, Gainesville, United States, Patricia M Gregg, University of Illinois at Urbana-Champaign, Urbana, IL, United States, Daniel J Fornari, Organization Not Listed, Washington, DC, United States, Emma McCully, Skidmore College, Saratoga Springs, NY, United States and William Ian Ridley, USGS Central Region Offices Denver, Denver, CO, United States
Geophysical and Geochemical Analysis of the 8°20’ N Seamount Chain: Studies of Off-Axis Volcanism (278759)
Emma E McCully1, Daniel J. Fornari1, Patricia M Gregg2, Michael R Perfit3, V. Dorsey Wanless4, Molly Anderson5 and Megan Lubetkin6, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)University of Illinois at Urbana Champaign, Urbana, IL, United States, (3)University of Florida, Department of Geological Sciences, Gainesville, United States, (4)Boise State University, Department of Geosciences, Boise, United States, (5)Boise State University, Boise, ID, United States, (6)Bates College, Lewiston, ME, United States
Formation and evolution of the near axis 8˚20’N seamount chain: Evidences from the geophysical data analysis (286393)
Valentina Romano, Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy, Patricia M Gregg, University of Illinois at Urbana Champaign, Urbana, IL, United States, Yan Zhan, Carnegie Institution for Science, Earth and Planets Laboratory, Washington, DC, United States, Daniel J. Fornari, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Michael R Perfit, University of Florida, Geological Sciences, Ft Walton Beach, FL, United States; University of Florida, Department of Geological Sciences, Gainesville, United States and Maurizio Battaglia, USGS, Baltimore, MD, United States
Three-dimensional S-wave tomography under Axial Seamount (264874)
Christian Baillard, School of Oceanography, University of Washington, Marine Geology and Geophysics, Seattle, United States, William S D Wilcock, University of Washington, School of Oceanography, Seattle, United States, Adrien F Arnulf, Institute for Geophysics, Austin, United States, Maya Tolstoy, University of Washington, College of the Environment, Seattle, United States and Felix Waldhauser, Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States
Evolution of Slow to Intermediate-Spreading Oceanic Crust in the South Atlantic: The Effects of Age, Sediment Thickness, and Spreading Rate on the Heterogeneity of Upper Crustal Velocities (260135)
Dominik Alexander Kardell, University of Texas at Austin, Institute for Geophysics, Austin, TX, United States, Gail Lynn Christeson, UTIG, Austin, United States, Robert Reece, Texas A&M University, Geology and Geophysics, College Station, TX, United States and Richard L Carlson, Texas A&M University, Geology & Geophysics, College Station, TX, United States
In-situ seismic record of potential sill intrusion at the ultraslow spreading Southwest Indian Ridge (223445)
Michaela Meier, Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany and Vera S N Schlindwein, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
Multi-type Tectonic Responses to Plate Motion Changes of Mega-Offset Transform Faults at the Pacific-Antarctic Ridge (231162)
Fan Zhang, Southern University of Science and Technology of China, Shenzhen, China, Jian Lin, Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Hongfeng Yang, Earth System Science Programme, Faculty of Science, Chinese University of Hong Kong, Hong Kong, China and Zhiyuan Zhou, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
From Iceland to the Rifting Segment South of the Bight Transform Fault. 1000 km of Volcanic Rifting Plate Boundary. (238802)
Armann Hoskuldsson, University of Iceland, Faculty of Earth Sciences, Reykjavik, Iceland, Richard N Hey, University of Hawaii at Manoa, HIGP/SOEST, Honolulu, HI, United States, Fernando Martinez, Univ of Hawaii-SOEST/HIGP, Honolulu, HI, United States, Asdis Benediktsdottir, University of Iceland, Reykjavik, Iceland and Sigvaldi Thordarson, Iceland Geosurvey, Reykjavik, Iceland
The Imaging and Evolution of Seismic Layer 2A Thickness from a 0-70 Ma Oceanic Crustal Transect in the South Atlantic (243100)
Justin David Estep1, Robert Reece1, Dominik Alexander Kardell2, Gail Lynn Christeson3 and Richard L Carlson4, (1)Texas A&M University, Geology and Geophysics, College Station, TX, United States, (2)Montevideo, Uruguay, (3)UTIG, Austin, United States, (4)Texas A&M University, Geology & Geophysics, College Station, TX, United States
Electrical feature at the depths of lithosphere–asthenosphere boundary beneath the petit-spot volcanic field in northwestern Pacific (258545)
Kiyoshi Baba, University of Tokyo, Bunkyo-ku, Japan, Natsue Abe, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan, Naoto Hirano, Tohoku University, Center for Northeast Asian Studies, Sendai, Japan and Masahiro Ichiki, Tohoku University, Sendai, Japan
Interpreting Continental Break-Up From Surface Observations: Analysis of 1D Partial Melting Using Synthetic Waveform Propagation  (273592)
Thijs Franken1, John J Armitage1, Nobuaki Fuji2 and Alexandre Fournier3, (1)Institut de Physique du Globe de Paris, Paris, France, (2)Université de Paris, Institut de physique du globe de Paris, Paris, France, (3)Université de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, France
Seafloor Age-Stacking Reveals No Evidence for Milankovitch Cycle Influence on Abyssal Hills at Intermediate, Fast and Super-Fast Spreading Rates (224627)
John Goff, University of Texas at Austin, Institute for Geophysics, Jackson School of Geosciences, Austin, TX, United States, Sabin Zahirovic, The University of Sydney, School of Geosciences, Sydney, NSW, Australia and Dietmar Müller, The University of Sydney, EarthByte Group, School of Geosciences, Sydney, NSW, Australia
Stretching and smearing of chemical heterogeneity by melting and melt migration beneath mid-ocean ridges (240095)
Yan Liang, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States and Boda Liu, Brown University, Providence, RI, United States
A focus on melt focusing (264610)
Shuwen Dong, Scripps Institution of Oceanography, La Jolla, United States, Marc W Spiegelman, Columbia University, Earth and Environmental Science/Applied Physics & Applied Math, New York, United States, Dave R Stegman, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States and Cian R Wilson, Carnegie Institution for Science, Earth and Planets Laboratory, Washington, United States
Magma Supply of Southwest Indian Ocean: Implication from Crustal Thickness Anomalies (223101)
Liu Chiheng1, Li Jianghai1, Zhang Huatian1 and Fan Qingkai2, (1)Peking University, Beijing, China, (2)Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of earth and space sciences, Peking University, Beijing, China
Numerical modelling of lithospheric flexure in front of subduction zones in Japan and its role to initiate melt extraction from the LVZ. (230848)
Annelore Bessat1, Sebastien Pilet2, Thibault Duretz2 and Stefan M Schmalholz2, (1)University of Lausanne, Lausanne, Switzerland, (2)University of Lausanne, Institute of Earth Sciences, Lausanne, Switzerland

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