V14C:
The Earth's Geodynamic Carbon Cycle: Subduction, Storage, Migration, and Outgassing I


Session ID#: 8341

Session Description:
The carbon cycle is of fundamental importance to Earth processes over geologic time. However, the physics of deep carbonaceous reservoirs and the fluxe(s) between Earth’s interior (mantle) and exterior (crust, hydrosphere & atmosphere) remain enigmatic.

This session aims to promote the latest multidisciplinary research involving the behaviour of carbon within the subducted slab, crust, and mantle. We welcome contributions related to: (1) solubility and storage of carbon within Earth’s interior; (2) origin and migration of C-rich fluids and melts and their impact on redox processes, diamond formation, mantle metasomatism and associated (alkaline) magmatism; (3) the petrology of carbonaceous phases at extreme P-T conditions; (4) stable isotope fractionation; and (5) carbon release to the exosphere through volcanic, tectonic and other styles of degassing.

We invite contributions from volcanology, natural/experimental geochemistry/petrology, and mineral physics, as well as theoretical and computational studies. Submissions by early career scientists and graduate students are particularly encouraged.

Primary Convener:  Sami Mikhail, The University of St. Andrews, School of Earth and Environmental Sciences, St. Andrews, United Kingdom
Conveners:  Anja Rosenthal, Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, Vincenzo Stagno, Geodynamics Research Center, Matsuyama, Japan and Taryn Michelle Lopez, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States
Chairs:  Taryn Michelle Lopez, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States and Vincenzo Stagno, Geodynamics Research Center, Matsuyama, Japan
OSPA Liaison:  Vincenzo Stagno, Geodynamics Research Center, Matsuyama, Japan

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • MR - Mineral and Rock Physics
Co-Sponsor(s):
  • EGU-GMPV: European Geosciences Union – Geochemistry, Mineralogy, Petrology, and Volcanology - European Geosciences Union – Geochemistry, Mineralogy, Petrology, and Volcanology
Index Terms:

1031 Subduction zone processes [GEOCHEMISTRY]
3612 Reactions and phase equilibria [MINERALOGY AND PETROLOGY]
3621 Mantle processes [MINERALOGY AND PETROLOGY]
8430 Volcanic gases [VOLCANOLOGY]

Abstracts Submitted to this Session:

Secondary fractionation processes of dissolved inorganic carbon and CO2 in thermal waters from active and quiescent volcanic systems (Invited) (62463)
Franco Tassi, Stefania Venturi, Orlando Vaselli, Jacopo Cabassi and Francesco Capecchiacci, University of Florence, Dipartimento di Scienze della Terra, Florence, Italy
Uncertainties and Key Open Questions in the Geological Carbon Cycle (81338)
Michael Richard Burton, University of Manchester, Manchester, M13, United Kingdom
Mantle carbon fluxes and reservoirs: A status update (Invited) (79581)
Marc M Hirschmann, University of Minnesota Twin Cities, Department of Earth and Environmental Sciences, Minneapolis, United States
Iron carbonates in the Earth’s lower mantle: reality or imagination? (Invited) (64568)
Valerio Cerantola1,2, Catherine A McCammon2, Marco Merlini3, Elena Bykova4, Ilya Kupenko5, Leyla Ismailova6, Alexander I Chumakov5, Innokenty Kantor1, Leonid S Dubrovinsky7 and Clemens Prescher8, (1)ESRF European Synchrotron Radiation Facility, Grenoble, France, (2)University of Bayreuth, Bayreuth, Germany, (3)University of Milan, Department of Earth Sciences 'Ardito Desio', Milan, Italy, (4)DESY Deutsches Elektronen Synchrotron, Hamburg, Germany, (5)Universitaet Muenster, Institute for Mineralogy, Muenster, Germany, (6)Russian Academy of Sciences, Vernadsky Institute of Geochemistry and Analytical Chemistry, Moscow, Russia, (7)University of Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany, (8)University of Chicago, Center for Advanced Radiation Sources, Chicago, IL, United States
Structure and Viscosity of Carbonate-Silicate Melts Using in situ Techniques (Invited) (84031)
Daniel R Hummer1, Craig E Manning2, Abby Kavner3, Yoshio Kono4, Changyong Park5 and Curtis Kenney-Benson5, (1)Carnegie Institution for Science, Washington, DC, United States, (2)University of California Los Angeles, Earth, Planetary and Space Sciences, Los Angeles, CA, United States, (3)University of California Los Angeles, Los Angeles, United States, (4)Carnegie Institution for Science Washington, Washington, DC, United States, (5)Carnegie Instituion of Washing, Argonne, IL, United States
Carbonation of Subduction Interface Ultramafic Rocks and Implications for Deep Carbon Cycling: Evidence from Hybrid Serpentinite-Marble in the Voltri Massif, Italy (69582)
Marco Scambelluri1, Gray E Bebout2, Mattia Gilio1, Donato Belmonte1, Nicola Campomenosi1 and Laura Crispini3, (1)University of Genoa, Genoa, Italy, (2)Lehigh University, Dept. Earth and Environmental Sciences, Bethlehem, PA, United States, (3)University of Genova, Department of Earth Sciences, Environment and Life, Genova, Italy
Experimental determination of dissolved CO2 content in nominally anhydrous andesitic melts at graphite/diamond saturation – Remobilization of deeply subducted reduced carbon via partial melts of MORB-like eclogite (66412)
James Eguchi, Rice University, Department of Earth, Environmental, and Planetary Sciences, Houston, TX, United States and Rajdeep Dasgupta, Rice University, Department of Earth, Environmental and Planetary Sciences, Houston, TX, United States
Immiscible Hydrocarbon and Aqueous Fluids Under Subduction Zone Conditions and Implications for the Deep Carbon Cycle (69732)
Fang Huang1, Isabelle Daniel2,3, Herve Cardon3, Gilles Montagnac3 and Dimitri A Sverjensky4, (1)CSIRO, Mineral Resources, Kensington, WA, Australia, (2)University Claude Bernard Lyon 1, Villeurbanne, France, (3)Ecole Normale Supérieure Lyon, Lyon, France, (4)Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States

See more of: Volcanology, Geochemistry and Petrology