V11D:
Chemistry and Physics of Redox Reactions in the Solid Earth Posters


Submit an Abstract to this Session


Session ID#: 51600

Session Description:
Earth boasts an enormous oxidation/reduction (redox) gradient from its oxidized surface to its reduced, metallic core. The variation in redox potential between, and laterally within, these layers has profound consequences for geochemistry, geophysics, and geobiology. Redox reactions between minerals, melts, and fluids affect stable assemblages in the crust, mantle, and core. Varying concentrations of redox-sensitive elements can change the rheological properties of minerals by influencing defect concentrations. And chemical exchange between the surface and the interior has led to the evolution of physically distinct reservoirs on geologic timescales. This session hopes to foster conversations among a broad range of disciplines, including both geochemistry and geophysics. We encourage submissions describing experimental, modeling, and natural sample studies in igneous and metamorphic petrology, geochemistry, mineral physics, and seismology.
Primary Convener:  Fred A Davis, University of Minnesota Duluth, Duluth, United States
Convener:  Maryjo N Brounce, University of California Riverside, Riverside, CA, United States
Primary Liaison:  Fred A Davis, University of Minnesota Duluth, Duluth, United States
Chairs:  Fred A Davis, Smithsonian Institution, Washington, United States and Maryjo N Brounce, California Institute of Technology, Pasadena, United States
OSPA Liaison:  Fred A Davis, Smithsonian Institution, Washington, United States

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • MR - Mineral and Rock Physics
Index Terms:

1030 Geochemical cycles [GEOCHEMISTRY]
1042 Mineral and crystal chemistry [GEOCHEMISTRY]
3612 Reactions and phase equilibria [MINERALOGY AND PETROLOGY]
3651 Thermobarometry [MINERALOGY AND PETROLOGY]

Abstracts Submitted to this Session:

Carbonate polymorphism reverses carbonate-silicate reaction in Earth’s lower mantle (Invited) (346502)
Susannah Dorfman, Michigan State University, Department of Earth and Environmental Sciences, East Lansing, MI, United States, Mingda Lv, Michigan State University, Earth and Environmental Sciences, East Lansing, MI, United States, James Badro, Université Paris Cité, Institut de Physique du Globe de Paris, CNRS, Paris, France; Ecole Polytechnique Federale de Lausanne, Institute for Condensed Matter Physics, Earth and Planetary Science Laboratory, Lausanne, Switzerland, Stephan Borensztajn, Institut de Physique du Globe de Paris, Université Paris Cité, Paris, France, Eran Greenberg, University of Chicago, Center for Advanced Radiation Sources, Lemont, IL, United States and Vitali B Prakapenka, University of Chicago, Center for Advanced Radiation Sources, Chicago, IL, United States
Oxygen fugacity of upper mantle beneath Dharwar craton, India (414684)
Jiten Pattnaik1, Dr. Sujoy Ghosh, PhD1, E.V.S.S.K. Babu2 and Ashish Dongre3, (1)Indian Institute of Technology Kharagpur, Department of Geology & Geophysics, Kharagpur, India, (2)CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad, 500007, India, (3)Savitribai Phule Pune University, Department of Geology, Pune, India
Vanadium Isotopic Compositions of the Panzhihua Layered Intrusion Associated with Giant Fe-Ti-V Oxide Deposit, SW China (385075)
Mengshu Liu1, Yonghua Cao2, Christina Yan Wang2 and Fang Huang1, (1)School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China, (2)Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
An Oxidized Signature for the Gakkel Ridge ‘Dupal-like’ Isotopic Composition (392426)
Kendra J Janell Lynn1, Elizabeth Cottrell2, Jessica M Warren1, Katherine A Kelley3 and Charles H Langmuir4, (1)University of Delaware, Earth Sciences, Newark, DE, United States, (2)Smithsonian, NMNH, Department of Mineral Sciences, Washington, DC, United States, (3)University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States, (4)Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States
Variations in Fe3+/FeT ratios in volcanic amphibole as a function of magmatic oxygen fugacity and mineral composition (398262)
Barbara Cäcilia Ratschbacher1, Claire E Bucholz2, Jennifer M Jackson3 and Natalia V Solomatova3,4, (1)California Institute of Technology, Seismological Laboratory, Pasadena, United States, (2)California Institute of Technology, Geological and Planetary Sciences, Pasadena, United States, (3)California Institute of Technology, Pasadena, CA, United States, (4)CNRS, École Normale Supérieure de Lyon, Lyon, France
Using the Iron-Titanium Oxide Thermobarometer to Distinguish Silicic Magma Types (465246)
Aleysa Athene Orr, Portland State University, Portland, OR, United States and Nicholas Tailby, University of New England, Earth and Rural Sciences, Armidale, NSW, Australia

See more of: Volcanology, Geochemistry and Petrology