V13A:
Deep Earth Watery Metasomatic Fluids II Posters

Submit an Abstract to this Session



Session ID#: 26130

Session Description:
Water-bearing fluids play an important role in a wide range of mantle processes. The fluids vary from dilute to over 50% dissolved silicate-rock components and assist in the transport of geochemical signals from subducting slabs in arc and back-arc magmas. All silicate systems exhibit full miscibility with H2O at mantle depths, indicating that dehydration “melting” can produce an intermediate, H2O-rich fluid phase with extraordinary metasomatic power. New models of diamond formation point to the presence of an H2O-bearing COH fluid highly charged with rock-forming chemical elements that can equilibrate with eclogite and peridotite. How much of the mantle has been altered by such fluids? We invite contributions from experimental, fluid inclusion, ab initio, and thermodynamic modeling studies, which are providing unprecedented insights into aqueous fluids at mantle conditions.
Primary Convener:  Craig E Manning, University of California Los Angeles, Earth, Planetary and Space Sciences, Los Angeles, CA, United States
Convener:  Dimitri A Sverjensky, Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States
Chairs:  Craig E Manning, University of California Los Angeles, Earth, Planetary and Space Sciences, Los Angeles, CA, United States and Dimitri A Sverjensky, Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States
OSPA Liaison:  Dimitri A Sverjensky, Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States
Index Terms:

1038 Mantle processes [GEOCHEMISTRY]
1043 Fluid and melt inclusion geochemistry [GEOCHEMISTRY]
8410 Geochemical modeling [VOLCANOLOGY]
8413 Subduction zone processes [VOLCANOLOGY]

Abstracts Submitted to this Session:

Magnesite Solubility at 800 ºC, 10 kbar, in H2O-CO2± NaCl solutions: implications for carbon transport in the mantle (265679)
Daniel Fineman, University of California Los Angeles, Los Angeles, CA, United States and Craig E Manning, Univ California Los Angeles, Los Angeles, CA, United States
The fate of carbonates along a subducting slab (273610)
Pierre Bouilhol, Laboratoire Magmas et Volcans, Clermont-Ferrand Cedex, France; CRPG, Vandoeuvre-Les-Nancy, France, Baptiste Debret, Laboratoire G-TIME, Université Libre de Bruxelles, Bruxelles, Belgium; Université Libre de Bruxelles, G-Time, Brussel, Belgium and Edward Inglis, University of Durham, Department of Earth Sciences, Durham, United Kingdom
Upper mantle fluids evolution, diamond formation, and mantle metasomatism (210762)
Fang Huang, CSIRO, Mineral Resources, Kensington, WA, Australia and Dimitri A Sverjensky, Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States
Redox Equilibria Involving Chromium Minerals in Aqueous Fluids in the Deep Earth - Implications for Diamond Formation (228746)
Jingyi Huang1, Fang Huang2, Jihua Hao3 and Dimitri A Sverjensky1, (1)Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States, (2)CSIRO, Mineral Resources, Kensington, WA, Australia, (3)Laboratoire de Géologie de Lyon, Observatoire de Lyon, Université Claude Bernard Lyon1, Villeurbanne Cedex, France
Boron Isotopes as Tracers of the Tectonic Origin and Geological History of Serpentinites in Subduction and Suture Zones. (284381)
Celine Martin1,2, George E Harlow3, Kennet E Flores1,4 and Samuel Angiboust5, (1)American Museum of Natural History, Department of Earth and Planetary Sciences, New York, NY, United States, (2)American Museum of Natural History, Earth and Planetary Sciences, New York, NY, United States, (3)American Museum of Natural History, Department of Earth and Planetary Sciences, New York, United States, (4)University of North Carolina at Chapel Hill, Department of Earth, Marine and Environmental Sciences, Chapel Hill, NC, United States, (5)Institut de Physique du Globe de Paris, Paris, France

See more of: Volcanology, Geochemistry and Petrology