V030
Magmatic Processes and Crustal Accretion at Mid-Ocean Ridges
Session ID#: 82913
Session Description:
Magmatism at mid-ocean ridges is responsible for creation of most of Earth’s crust and represents the primary output from Earth’s interior to its exterior. We seek contributions focused on mid-ocean ridge magmatic activity at all levels from the mantle and crust to eruptions at the surface. Studies may be at local, regional or global scales. Subjects may include but are not limited to: mantle compositions and evolution; evolution and migration of MORB magmas; and crustal accretion and alteration. Observational studies of mineral, rock and gas chemistry, and crustal structure on- and off-axis at all scales are welcomed, as are experimental and modeling studies of any mid-ocean ridge process.
Co-Sponsor(s):
Index Terms:
1036 Magma chamber processes [GEOCHEMISTRY]
3035 Midocean ridge processes [MARINE GEOLOGY AND GEOPHYSICS]
3621 Mantle processes [MINERALOGY AND PETROLOGY]
8416 Mid-oceanic ridge processes [VOLCANOLOGY]
Primary Convener: Peter J Michael, University of Tulsa, Geosciences, Tulsa, OK, United States
Conveners: V. Dorsey Wanless, WHOI, Woods Hole, MA, United States, Matthew E Rioux, University of California, Santa Barbara, CA, United States and Patricia M Gregg, University of Illinois at Urbana-Champaign, Urbana, IL, United States
Primary Liaison: Peter J Michael, University of Tulsa, Geosciences, Tulsa, OK, United States
Interaction of the Kerguelen and Amsterdam-St. Paul hotspots with the Southeast Indian Ridge: Effects on crustal accretion of the Eastern Indian Ocean (495954)
Yiming Luo1, Jian Lin2, Zhiyuan Zhou1, Fan Zhang3 and Jinchang Zhang1, (1)South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China, (2)Woods Hole Oceanographic Inst, G & G, Woods Hole, MA, United States, (3)CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Guangzhou, China
Reconciling Off-Axis Mantle Melting Systematics and Heterogeneity: Geochemistry of Lavas From the 8˚20’ N Seamount Chain (497447)
Molly Anderson, University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States, Michael R Perfit, University of Florida, Department of Geological Sciences, Gainesville, FL, United States, V. Dorsey Wanless, WHOI, Woods Hole, MA, United States, Patricia M Gregg, University of Illinois at Urbana-Champaign, Urbana, IL, United States, Daniel J Fornari, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, William Ian Ridley, USGS Denver Federal Center, Denver, CO, United States and Michael A Cosca, USGS, Denver, CO, United States
The magma plumbing system of the Gakkel Ridge: petrological constraints (501598)
Emma Natasha Bennett, Cardiff University, Cardiff, CF24, United Kingdom, Johan C J Lissenberg, Cardiff University, Cardiff, United Kingdom and Katharine V Cashman, University of Bristol, Bristol, United Kingdom
Geochemical variations in mid-ocean ridge basalts from the Cocos-Nazca Spreading Center (506592)
Benjamin W Wernette1, Emily M Klein1, Deborah K Smith2, Hans Schouten3 and Johnson R Cann4, (1)Duke University, Durham, NC, United States, (2)National Science Foundation, Alexandria, VA, United States, (3)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (4)University of Leeds, Leeds, United Kingdom
Characterizing Small-Scale Brittle Deformation of the Crust along a Slow Spreading Ridge Segment using the Continuous Wavelet Transform (512438)
Genesee Malekah Lucia1, V. Dorsey Wanless2, Samuel A Soule2, Dylan Mikesell3 and Mark D Kurz2, (1)Boise State University, Geosciences, Boise, ID, United States, (2)WHOI, Woods Hole, MA, United States, (3)Boise State University, Department of Geosciences, Boise, ID, United States
Seismic observations of an active detachment faulting system beneath the Longqi hydrothermal field at the ultraslow spreading Southwest Indian Ridge (513093)
Yunlong Liu1, Chunhui Tao2, Vera S N Schlindwein3, Lei Qiu1, Haijiang Zhang4, Minghui Zhao5 and Hanchuang Wang6, (1)Second Institute of Oceanography, MNR, China, Key Laboratory of Submarine Geosciences, SOA, Hangzhou, China, (2)Second Institute of Oceanography, MNR, China, Hangzhou, China, (3)Alfred Wegener Institute, Bremerhaven, Germany, (4)University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China, (5)SCSIO South China Sea Institute of Oceanology, Chinese Acaademy of Sciences, Key Laboratory of Marginal Sea Geology, Guangzhou, China, (6)Second Institute of Oceanography, MNR, Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou, China
Centimeter-scale isotopic heterogeneity preserved in the lower oceanic crust. (Invited) (518991)
Sarah Lambart1, Janne Koornneef2, Marc-Alban Millet3, Gareth Davies2, Matthew Cook3 and Johan C J Lissenberg3, (1)University of Utah, Geology and Geophysics, Salt Lake City, UT, United States, (2)VU Amsterdam, Amsterdam, Netherlands, (3)Cardiff University, Cardiff, United Kingdom
High H2O and H2O/Ce in Mid-Ocean Ridge Basalts (MORB) from Gulf of Aden (523230)
Peter J Michael, University of Tulsa, Geosciences, Tulsa, OK, United States and David W Graham, Oregon State University, College of Earth, Ocean, & Atmospheric Sciences, Corvallis, OR, United States
Quantifying the 2006 submarine eruption and along-axis features near 9°50'N on the East Pacific Rise (523499)
Klara Ingrid Perkins, California Polytechnic State University San Luis Obispo, San Luis Obispo, CA, United States, Ross E Parnell-Turner, Scripps Institution of Oceanography, La Jolla, United States, Daniel J Fornari, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Barbara E John, University of Wyoming, Laramie, WY, United States
Gakkel Ridge basalts and peridotites record along-strike variations in fO2 (542018)
Kendra Janell Lynn1, Jessica M Warren1, Elizabeth Cottrell2, Suzanne Katherine Birner3, Katherine A Kelley4 and Charles H Langmuir5, (1)University of Delaware, Earth Sciences, Newark, DE, United States, (2)Smithsonian, NMNH, Washington, DC, United States, (3)Berea College, Berea, KY, United States, (4)University of Rhode Island, Narragansett, RI, United States, (5)Harvard Univ, Cambridge, MA, United States
Mantle Heterogeneity, Partial Melting and Volatile Degassing Beneath Fast-Spreading Ridges: Evidence from Helium Isotope Variations and He-CO2-Ba Systematics in Basalts from the Garrett Transform Fault (543435)
David W Graham, Oregon State University, College of Earth, Ocean, & Atmospheric Sciences, Corvallis, OR, United States and Peter J Michael, University of Tulsa, Geosciences, Tulsa, OK, United States
Anisotropic Permeability of Experimental Partially Molten Dunite Deformed In Shear (563888)
James A Bader1, Wenlu Zhu1, Laurent Montesi2, Benoit Cordonnier3, Chao Qi4 and David L Kohlstedt5, (1)University of Maryland College Park, College Park, MD, United States, (2)University of Maryland College Park, Department of Geology, College Park, MD, United States, (3)University of Oslo, Department of Geosciences, Physical of Geological Processes, Oslo, Norway, (4)University of Minnesota, Minneapolis, MN, United States, (5)University of Minnesota Twin Cities, Minneapolis, MN, United States
Importance of Permeability and Deep Channel Network on the Distribution of Melt, U-series disequilibria, and Radiogenic Isotope Variations in MORB (564095)
Yan Liang, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States and Boda Liu, Brown University, Providence, RI, United States
Partial melting anomaly of mid-ocean ridge due to reheating of the ancient mantle wedge (584479)
Jia Liu1, Chunhui Tao2, Kenji Shimizu3, Wei Li4, Liao Shili VI4, Jin Liang4, Takeshi Kuritani5, Weifang Yang4 and Guoying Zhang6, (1)Second Institute of Oceanology, MNR, Hangzhou, China, (2)Second Institute of Oceanography, MNR, China, Hangzhou, China, (3)JAMSTEC, Kochi, Japan, (4)Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China, (5)Hokkaido University, Department of Earth and Planetary Sciences, Sapporo, Japan, (6)Second Institute of Oceanography, State Oceanographic Administration of China, Hangzhou, China
Processing out sideswipe - a case study from the slow spreading Mid-Atlantic Ridge at 13° N (587940)
Murray Hoggett, University of Birmingham, Birmingham, B15, United Kingdom, Chisomaga Opara-Nestor, University of Birmingham, Birmingham, United Kingdom, Timothy J Reston, University of Birmingham, School of Geography, Earth and Environmental Sciences, Birmingham, B15, United Kingdom, Christine Peirce, University of Durham, Durham, United Kingdom, Richard W Hobbs, University of Durham, Department of Earth Sciences, Durham, United Kingdom and Christopher J MacLeod, Cardiff University, Cardiff, United Kingdom
Geochemical Diversity Along a Segment of the MAR ~14°N: Insights into Magma Transport at Slow-Spreading Mid-Ocean Ridges (595781)
Emma E McCully1, V. Dorsey Wanless2, Mark D Kurz2, Eric L Mittelstaedt3 and Samuel A Soule2, (1)Boise State University, Boise, ID, United States, (2)WHOI, Woods Hole, MA, United States, (3)University of Idaho Library, Moscow, ID, United States
Magma chamber and dike mechanics at mid-ocean ridges (607974)
Leif Karlstrom, University of Oregon, Department of Earth Sciences, Eugene, OR, United States, Samuel A Soule, WHOI, Woods Hole, MA, United States and Helge Gonnermann, Rice University, Houston, TX, United States
U-series disequilibria in MORBs generated by shallow spinel and plagioclase field mantle melting (610114)
Stephanie M Brown, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, Mark D Behn, Boston College, Chestnut Hill, MA, United States and Timothy L Grove, Massachusetts Institute of Technology, Earth, Atmospheric & Planetary Sciences, Cambridge, MA, United States
