V31D:
The Origin of Basaltic Magmatism Posters


Session ID#: 7653

Session Description:
Basaltic magmatism has been the focus of many studies from all geoscience disciplines, providing constraints on magma sources, magma generation and transport, and magmatic evolution. For example, geophysical observations reveal crustal and mantle structure, experimental petrology helps define the conditions of melt generation, geochemistry gives information on source composition(s), and numerical modeling provides insight into the dynamics of magma genesis, transport, and storage.

The challenge now is to bring these constraints together to produce geodynamically consistent models of basalt genesis in a variety of tectonic settings. Relevant questions include: How do basalt volumes and compositions relate to the dynamics of mantle flow and melting? Over what length scales are mantle source regions heterogeneous? How are magmas extracted and mixed?

We seek contributions that emphasize multidisciplinary approaches, using geochemistry, numerical modeling, experiments and/or geophysics to illuminate our understanding of basalt genesis and how it relates to the composition of the source.

Primary Convener:  Sarah Lambart, University of California Davis, Davis, CA, United States
Conveners:  Eric Brown, Aarhus University, Centre of Earth System Petrology, Department of Geoscience, Aarhus C, Denmark and Garrett Ito, University of Hawaii at Manoa, Honolulu, HI, United States
Chairs:  Sarah Lambart, University of California Davis, Davis, CA, United States and Eric Brown, Aarhus University, Centre of Earth System Petrology, Department of Geoscience, Aarhus C, Denmark
OSPA Liaison:  Garrett Ito, University of Hawaii at Manoa, Honolulu, HI, United States

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • S - Seismology
  • T - Tectonophysics
Index Terms:

1009 Geochemical modeling [GEOCHEMISTRY]
3611 Thermodynamics [MINERALOGY AND PETROLOGY]
3619 Magma genesis and partial melting [MINERALOGY AND PETROLOGY]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Melting Systematics in Mid-ocean Ridge Basalts and Implications for Global CO2 Fluxes (Invited) (58595)
Mark D Behn, Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, Timothy L Grove, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, United States, V. Dorsey Wanless, Boise State University, Geosciences, Boise, United States and Stephanie M Krein, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
Revised Mossbauer Calibration for Fe3+/FeT of XANES Basalt Standards: Implications for MORB (86080)
Marc M Hirschmann, University of Minnesota Twin Cities, Department of Earth and Environmental Sciences, Minneapolis, United States, Hongluo Zhang, Univ Minnesota, Minneapolis, MN, United States and Elizabeth Cottrell, Smithsonian, NMNH, Department of Mineral Sciences, Washington, DC, United States
Partial crystallization of picritic melt and its applications for the genesis of high-Ti and low-Ti basalts (73197)
Junlong Yang1, Chao WANG1, Zhenmin Jin2, Shuyan Jin1 and Sha Yan3, (1)China University of Geosciences Wuhan, Wuhan, China, (2)China University of Geosciences Wuhan, School of Earth Sciences, State Key Laboratory of Geological Processes and Mineral Resources, Wuhan, China, (3)Huazhong University of Science and Technology, Wuhan, China
Intraplate Harrat Volcanism and Neogene Evolution of the Lithosphere-Asthenosphere Boundary beneath Western Saudi Arabia (70673)
Adam JR Kent1, Robert A Duncan1, David W Graham1, Abdullah Mohammed Al-Amri2 and Saeed A Alshalntoni2, (1)Oregon State University, College of Earth, Ocean, & Atmospheric Sciences, Corvallis, OR, United States, (2)King Saud University, Riyadh, Saudi Arabia
The Effect of Crustal Strength on Volcanism During Continental Breakup (Invited) (58563)
John J Armitage, Royal Holloway University of London, Egham, United Kingdom; Institute de Physique du Globe de Paris, Paris, France, Kenni Dinesen Petersen, Aarhus University, Department of Geoscience, Aarhus, Denmark, Marta Perez-Gussinye, Royal Holloway University of London, Department of Earth Sciences, Egham, United Kingdom, Jenny Collier, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom and Raphael Pik, CRPG-CNRS, Vandoeuvre les Cedex, France
Evidence for a Dying Magma Chamber at Rábida Island, Galápagos (70328)
Hannah Bercovici1, Dennis Geist2, Karen S Harpp1 and Marco Almeida3, (1)Colgate University, Hamilton, NY, United States, (2)National Science Foundation, Arlington, VA, United States, (3)Instituto Geofísico de la Escuela Politécnica Nacional, Quito, Ecuador
Volcanic Evolution in the Galapagos: The Geochemistry and Petrology of Espanola Island (70322)
Maggie McGuire1, Kevin Charles Varga1, Karen S Harpp1, Dennis Geist2 and Minard L Hall3, (1)Colgate University, Hamilton, NY, United States, (2)National Science Foundation, Arlington, VA, United States, (3)Instituto Geofisico EPN - Ecuador, Quito, Ecuador
Mafic Volcanism and the Deep Crust in the Central Andes: In Situ Geochemistry and Isotopic Composition of Young, Small-Volume Mafic Eruptions. (73836)
Brennan Martin van Alderwerelt1, Ingrid Ukstins2, Frank C Ramos3, Dale H Burns1 and Samuel Harrison Saltzman1, (1)University of Iowa, Iowa City, IA, United States, (2)University of Iowa, Earth and Environmental Sciences, Iowa City, United States, (3)New Mexico State University Main Campus, Las Cruces, NM, United States
Basalt Magma, Whisky and Tequila: finely-crafted mixes of small liquid batches that defy the parent liquid concept but whose complexities teach us much (Invited) (58411)
Kenneth Howard Rubin1, John M Sinton1 and Michael R Perfit2, (1)Univ Hawaii, Department of Geology & Geophysics, SOEST, Honolulu, HI, United States, (2)University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States
Along-Strike Geochemical Variations in the Late Triassic Nikolai Magmatic System, Wrangellia, Central Alaska (62974)
Alicja Wypych1, Evan Twelker1, Lauren L Lande1,2 and Rainer Newberry2, (1)Alaska Division of Geological and Geophysical Surveys, Fairbanks, AK, United States, (2)Department of Geoscience, University of Alaska Fairbanks, Department of Geoscience, Fairbanks, AK, United States

See more of: Volcanology, Geochemistry and Petrology