V33H:
Geological Reactive Systems from the Mantle to the Abyssal Subseafloor I

Submit an Abstract to this Session



Session ID#: 35698

Session Description:
Understanding the processes controlling the transport of magmas and hydrothermal fluids through the oceanic lithosphere, and their feedbacks on its physical, rheological, magnetic and chemical properties, and habitability is crucial to comprehend the Earth system over time. This session focusses on the physical, hydrodynamic and geochemical mechanisms controlling mass and energy transfers during the formation and cooling of the lithosphere, from mid-oceanic spreading ridges to subduction zones with linkages and feedbacks between processes and the implications for Earth’s geodynamics, global geochemical cycle (including carbon and other volatile elements), life and marine mineral resources in the deep-sea. We encourage contributions on geological, geochemical and biological processes active at mid-oceanic ridge spreading centers and, more generally, in the oceanic lithosphere, from the observation of natural systems (e.g., ophiolitic complexes, dredged and drilled material from the oceanic mantle and crust), geophysics, flow and thermodynamic modeling and experimental works.
Primary Convener:  Marguerite Godard, University of Montpellier II, Montpellier Cedex 05, France
Conveners:  Wolfgang Bach, University of Bremen, Faculty of Geosciences, Bremen, Germany and Suzanne A McEnroe, Norwegian University of Science and Technology, Trondheim, Norway
Chairs:  Marguerite Godard, Géosciences Montpellier, Montpellier Cedex 05, France, Suzanne A McEnroe, Norwegian University of Science and Technology, Department of Geoscience and Petroleum, Trondheim, Norway and Wolfgang Bach, University of Bremen, Faculty of Geosciences, Bremen, Germany
OSPA Liaison:  Suzanne A McEnroe, Norwegian University of Science and Technology, Department of Geoscience and Petroleum, Trondheim, Norway

Cross-Listed:
  • B - Biogeosciences
  • GP - Geomagnetism, Paleomagnetism and Electromagnetism
  • T - Tectonophysics
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
1034 Hydrothermal systems [GEOCHEMISTRY]
1037 Magma genesis and partial melting [GEOCHEMISTRY]
3614 Mid-oceanic ridge processes [MINERALOGY AND PETROLOGY]

Abstracts Submitted to this Session:

Hydrothermal Upflow, Serpentinization and Talc Alteration Associated with a High Angle Normal Fault Cutting an Oceanic Detachment, Northern Apennines, Italy (255370)
Jeffrey Alt, University of Michigan Ann Arbor, Earth & Environmental Sciences, Ann Arbor, MI, United States, Laura Crispini, University of Genova, Department of Earth Sciences, Environment and Life, Genova, Italy, Laura Gaggero, University of Genoa, Dipartimento di Scienza della Terra dell’Ambiente e della Vita, Genoa, Italy, Wayne C Shanks III, U.S. Geological Survey, Yellowstone Volcano Observatory, Boulder, CO, United States, Cayce Gulbransen, U.S. Geological Survey, Denver, CO, United States and Giorgia Lavagnino, University of Genoa, Genoa, Italy
Constraining the Timescales of Rehydration in Nominally Anhydrous Minerals Using 3D Numerical Diffusion Models (278233)
Kendra J Janell Lynn and Jessica M Warren, University of Delaware, Earth Sciences, Newark, DE, United States
Interactions between peridotite and pyroxenite-derived melts at mantle conditions: an experimental study at 2 GPa (217787)
Giulio Borghini, Università degli Studi di Milano, Dipartimento di Scienze della Terra “Ardito Desio”, Milano, Italy, Patrizia Fumagalli, University of Milan, Department of Earth Sciences 'Ardito Desio', Milan, Italy and Elisabetta Rampone, University of Genoa, Genoa, Italy
Forsterite-Anorthite-CaTschermak-Enstatite (FACE): A geobarometer for plagioclase-bearing peridotites (217585)
Patrizia Fumagalli, University of Milano, Milano, Italy, Giulio Borghini, Università degli Studi di Milano, Dipartimento di Scienze della Terra “Ardito Desio”, Milano, Italy, Elisabetta Rampone, University of Genoa, Genoa, Italy and Stefano Poli, Universita'' di Milano, Milano, Italy
The Influence of Lithology on the Formation of Reaction Infiltration Instabilities in Mantle Rocks (230133)
Matej Pec, Massachusetts Institute of Technology, Cambridge, MA, United States, Benjamin K Holtzman, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Mark E Zimmerman, Univ Minnesota, Minneapolis, MN, United States and David L Kohlstedt, University of Minnesota Twin Cities, Minneapolis, MN, United States
Meter-scale Hf isotopic changes in the MORB mantle by interaction with pyroxenite-derived melts: insight from the Ligurian Ophiolites (Italy) (215485)
Elisabetta Rampone1, Giulio Borghini2, Cornelia Class3, Steven L Goldstein4, Yue Cai5, Anna Cipriani6,7, Alberto Zanetti8 and Albrecht W Hofmann7,9, (1)University of Genoa, Genoa, Italy, (2)Università degli Studi di Milano, Dipartimento di Scienze della Terra “Ardito Desio”, Milano, Italy, (3)Lamont -Doherty Earth Observatory of Columbia University, Palisades, United States, (4)Lamont-Doherty Earth Observatory, Palisades, NY, United States, (5)Lamont-Doherty Earth Observatory, Palisades, United States, (6)University of Modena and Reggio Emilia, Modena, Italy, (7)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (8)CNR, Pavia, Italy, (9)Max Planck Institute for Chemistry, Mainz, Germany

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