V33C:
Deep Carbon: From the Mantle to the Surface and Back Again III Posters

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Session ID#: 12779

Session Description:
The forms and fluxes of carbon in Earth determine its long-term fate on the planet. Carbon may be recycled to the surface through volcanism, relaminate the deep crust or sink into the mantle at subduction zones. Mantle-destined carbon may form diamonds or rise again as fluids and/or melts that feed volcanic systems. Quantifying carbon fluxes between these reservoirs is the subject of intense research, utilising field observations, experiments and numerical modelling. This research addresses fundamental questions: does carbon subduction affect surface abundances over geological time? Or is carbon returned efficiently to surface reservoirs via metamorphism, migration, magmatism and eruption? Is the net flux of carbon into or out of Earth and did the net flux change through time? This session brings together scientists studying carbon, its forms, quantities, movements and origins in the Earth system, from geochemistry to petrology, volcanology, geodynamics, thermodynamics, geophysics, paleoclimate and geology.
Primary Convener:  Terry A Plank, Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States
Conveners:  Rajdeep Dasgupta, Rice University, Department of Earth, Environmental and Planetary Sciences, Houston, United States and Michael Richard Burton, University of Manchester, Manchester, M13, United Kingdom
Chairs:  Michael Richard Burton, University of Manchester, Manchester, M13, United Kingdom and Terry A Plank, Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States
OSPA Liaison:  Michael Richard Burton, University of Manchester, Manchester, M13, United Kingdom
Index Terms:

1012 Reactions and phase equilibria [GEOCHEMISTRY]
1025 Composition of the mantle [GEOCHEMISTRY]
1031 Subduction zone processes [GEOCHEMISTRY]
8430 Volcanic gases [VOLCANOLOGY]

Abstracts Submitted to this Session:

Deep subduction of Organic Carbon Related to Jurassic Ridge-Hydrothermal Biosphere; case study from the Besshi mine in the Sanbagawa high P/T rocks, in Japan (134646)

Kazuaki Okamoto1, Yumi Ando1 and Yuji Sano2, (1)Saitama University, Saitama, Japan, (2)University of Tokyo, Bunkyo-ku, Japan
Deep Carbon Cycle Recorded by Calcium-Enriched Rodingite in the Subduction-Related Ophiolite (141203)
Jingen Dai1, Chengshan Wang2, Liu Shengao2, Di-Cheng Zhu3 and Shan Ke2, (1)China University of Geosciences (Beijing), School of Earth Sciences and Resources, Beijing, China, (2)China University of Geosciences Beijing, School of Earth Sciences and Resources, Beijing, China, (3)China University of Geosciences Beijing (dchengzhu@163.com), Beijing, China
Fe-based redox state of mantle eclogites: Inherited from oceanic protoliths, modified during subduction or overprinted during metasomatism? (155478)
Sonja Aulbach1, Alan B Woodland1, Prokopiy Vasilyev2 and Fanus Viljoen3, (1)Goethe University Frankfurt, Frankfurt, Germany, (2)Curtin University, Perth, WA, Australia, (3)University of Johannesburg, Auckland Park, South Africa
Variable mixing and degassing of mantle CO2 within continental subsurface water bodies evidenced by compared gas geochemistry and fluid-phase equilibrium modeling (141328)
Rouchon Virgile, IFP Energies nouvelles, Rueil-Malmaison Cedex, France
A Reservoir Model for the Evolution of Deep Carbon in the Earth (120767)
Marie Weisfeiler, University of California Davis, Davis, CA, United States, Louise H Kellogg, University of California - Davis, Earth and Planetary Sciences, Davis, CA, United States and Donald L Turcotte, University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States
Silicate and Carbonatite Melts in the Mantle: Adding CO2 to the pMELTS Thermodynamic Model of Silicate Phase Equilibria (189786)
Paula M Antoshechkina, California Institute of Technology, Geological and Planetary Sciences, Pasadena, CA, United States and Oliver Shorttle, California Institute of Technology, Pasadena, CA, United States
A 2D petrological-thermomechanical study of a carbonate metasomatized subcontinental lithospheric mantle with variable tectothermal ages (170447)
Christopher M Gonzalez1, Weronika Gorczyk1 and Taras Gerya2, (1)University of Western Australia, Crawley, WA, Australia, (2)ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland
Core-mantle carbon partitioning during Earth accretion (143565)
Carolin Fichtner1, Max W Schmidt1, Christian Liebske2, Anne-sophie Bouvier3 and Lukas P Baumgartner4, (1)ETH Zurich, Zurich, Switzerland, (2)ETH Swiss Federal Institute of Technology Zurich, Institute of Geochemistry and Petrology, Department of Earth Sciences, Zurich, Switzerland, (3)University of Lausanne, Lausanne, Switzerland, (4)University of Lausanne, Lausanne, Switzerland
Fe-Ni-S Melt is the Dominant Carrier of C in the Deep Upper Mantle (148848)
J ZhangZhou, University of Minnesota Twin Cities, Minneapolis, MN, United States and Marc M Hirschmann, University of Minnesota Twin Cities, Department of Earth and Environmental Sciences, Minneapolis, United States
Increased degassing from the Southern Central American Volcanic Arc in response to crustal stress change following the 2012 Nicoya earthquake? (167584)
Maarten J de Moor1, Christoph Kern2, Tobias P Fischer3, Geoffroy Avard4, Alessandro Aiuppa5, Marino Protti1, Cyril Muller4, Julio Alvarez6, Jose Armando Saballos6 and Bo Galle7, (1)Observatorio Vulcanológico y Sismológico de Costa Rica, Heredia, Costa Rica, (2)USGS Cascades Volcano Observatory, Vancouver, WA, United States, (3)University of California, Santa Barbara, Santa Barbara, United States, (4)OVSICORI-UNA, Heredia, Costa Rica, (5)Università di Palermo, Dipartimento di Scienze della Terra e del Mare (DiSTeM), Palermo, Italy, (6)Instituto Nicaragüense de Estudios Territoriales, Managua, Nicaragua, (7)Chalmers University of Technology, Gothenburg, Sweden

See more of: Volcanology, Geochemistry and Petrology