MR43C:
Connecting Rheology, Microstructure, and Chemistry of Earth’s Mantle: New Constraints from Experiments, Observations, and Theory II Posters


Submit an Abstract to this Session


Session ID#: 60781

Session Description:
Geophysical and chemical features of Earth’s dynamic interior display complex kinematics, enigmatic discontinuities (e.g., mid-lithospheric and lithosphere-asthenosphere discontinuities), stable cratons, as well as flow at ascending mantle plumes. These phenomena can be explained through evolution in microstructure (e.g., grain-size, crystallographic preferred orientation), the chemical environment (e.g., water content, chemistry and structure of grain-boundaries), and/or the existence of melt. In this session, we explore the effects of microstructure and chemistry, and their relationships with the viscosity and deformation mechanisms, on the tectonic history and dynamics of Earth’s mantle. We invite abstracts from a variety of scientific ventures, such as diffusion and solid-state deformation experiments, analysis of natural samples, numerical models, and theoretical studies, to shed light on the microstructural and chemical effect on the strength and tectonic evolution of planetary interiors.
Primary Convener:  Yuval Boneh, Brown University, Providence, RI, United States
Conveners:  Emily J Chin, Scripps Institution of Oceanography, Geoscience Research Division, La Jolla, United States, Jeffrey S Pigott, Los Alamos National Laboratory, Los Alamos, NM, United States and Sebastian Ritterbex, Ehime University, Matsuyama, Japan
Primary Liaison:  Emily J Chin, Brown University, Providence, United States
Chairs:  Jeffrey S Pigott, Los Alamos National Laboratory, Los Alamos, NM, United States and Emily J Chin, Brown University, Providence, United States
OSPA Liaison:  Emily J Chin, Brown University, Providence, United States
Co-Organized with:
Mineral and Rock Physics, and Volcanology, Geochemistry and Petrology

Proposed Co-Organized Session with:
  • T - Tectonophysics
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

3620 Mineral and crystal chemistry [MINERALOGY AND PETROLOGY]
3625 Petrography, microstructures, and textures [MINERALOGY AND PETROLOGY]
3902 Creep and deformation [MINERAL PHYSICS]
8162 Rheology: mantle [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Strain Weakening of Olivine-rich Rocks Linked to Microstructural Evolution During Diffusion Creep (376565)
Ningli Zhao, Carnegie Institute for Science, Earth and Planets Laboratory, Washington, United States, Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States, Reid F Cooper, Brown Univ, Providence, RI, United States, Seth C Kruckenberg, Boston College, Earth and Environmental Sciences, Chestnut Hill, MA, United States and Joseph Cukjati, Brown University, Providence, RI, United States
Rheological behavior and electrical conductivity of San Carlos olivine at low melt fraction (394987)
Leila Hashim, University of Minnesota Twin Cities, Minneapolis, United States, Mark E Zimmerman, Univ Minnesota, Minneapolis, MN, United States, Rémi Champallier, ISTO Institut des Sciences de la Terre d'Orléans, Orléans Cedex 2, France, Fabrice Gaillard, CNRS-Orléans, Orléans, France and David L Kohlstedt, University of Minnesota Twin Cities, Minneapolis, MN, United States
Rapid thermal rejuvenation under O‘ahu inferred from Salt Lake Crater garnet pyroxenite xenoliths (395233)
Imani Guest, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States, Michael O Garcia, University of Hawaii at Manoa, Department of Earth Sciences, Honolulu, HI, United States, Garrett Ito, University of Hawaii, Department of Earth Sciences, Honolulu, United States and Eric Hellebrand, University of Hawaii at Manoa, Honolulu, HI, United States
Grain Growth Kinetics of Magnesian Carbonates (414026)
Abhishek Prakash1, Caleb McDaniel2, Caleb W Holyoke III2, Andreas K Kronenberg1 and Paul Raterron3,4, (1)Texas A&M University, Department of Geology and Geophysics, College Station, United States, (2)University of Akron, Geosciences, Akron, OH, United States, (3)National Science Foundation, Arlington, VA, United States, (4)CNRS - Université de Lille, UMET, Villeneuve d'Ascq, France
Microstructural Controls on Grain Size Distributions: A Statistical Mechanics Approach. (418877)
Thomas Breithaupt1, Richard F Katz2 and Lars N Hansen2, (1)University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom, (2)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom
The Impact of the Deformation History on the Microstructural Evolution of Polycrystalline Olivine and How It Affects the Interpretation of Mantle Seismic Anisotropy (430903)
Albert Griera1, Enrique Gomez-Rivas2, Ricardo Lebensohn3 and Maria-Gema Llorens1, (1)Universitat Autònoma de Barcelona, Departament de Geologia, Bellaterra (Cerdanyola del Vallès), Spain, (2)Universitat de Barcelona, Department of Mineralogy, Petrology and Applied Geology, Barcelona, Spain, (3)Los Alamos National Laboratory, Los Alamos, NM, United States
Transmission of dislocations across olivine grain boundaries (433206)
Filippe Ferreira1, Katharina Marquardt1 and Lars N Hansen2, (1)Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, (2)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom
Deformation of olivine + antigorite aggregates : effect of phase proportions and in-situ evaluation of stress partitionning. (453661)
Nadege Hilairet1, Thomas P Ferrand2, Paul Raterron3, Sebastien Merkel4, Jeremy Guignard5, Wilson A. Crichton5 and Christopher Langrand6, (1)CNRS, Paris Cedex 16, France, (2)Ecole Normale Supérieure Paris, Paris, France, (3)National Science Foundation, Arlington, VA, United States, (4)UMET, Université de Lille, Villeneuve d'Ascq, France, (5)ESRF European Synchrotron Radiation Facility, Grenoble, France, (6)Université de Lille, UMET - CNRS, Lille, France
Recycling of crust in lithospheric mantle of the North China Craton: evidence from petrology, mineral chemistry, and olivine oxygen isotope of peridotite xenoliths in high-Mg diorites (459021)
Chunguang Wang1, Wenliang Xu2, Debin Yang1 and Fuping Pei1, (1)Jilin University, Changchun, China, (2)Jilin University, College of Earth Sciences, Changchun, China
Geochemistry and deformation microstructures of composite pyroxenite-peridotite xenoliths from Hannuoba, North China Craton (365444)
Emily J Chin, Scripps Institution of Oceanography, Geoscience Research Division, La Jolla, United States, Vincent Soustelle, Brown University, Geological Sciences, Providence, RI, United States and Yongsheng Liu, China University of Geosciences Wuhan, Wuhan, China
Shallow fluid circulation in mantle wedge inferred from dihedral angle between olivine and NaCl-bearing aqueous fluid (366351)
Yongsheng Huang, Tohoku University Graduate School of Science, Sendai, Japan, Takayuki Nakatani, Geological Survey of Japan, AIST, Tsukuba, Japan, Michihiko Nakamura, Tohoku University Graduate School of Science, Earth Science, Sendai, Japan and Catherine A McCammon, University of Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany
Micro-indentation tests on olivine: grain-size and indentation size effects (366702)
Sanae Koizumi1, Tohru S Suzuki2 and Takehiko Hiraga1, (1)Earthquake Research Institute, University of Tokyo, Tokyo, Japan, (2)National Institute for Materials Science, Tsukuba, Japan
On the Role of Grain Boundary Processes and Mobility on the Rheology of Forsterite: Microstructural Evidence. (367422)
Caroline Bollinger1, Katharina Marquardt1, Filippe Ferreira1, Billy Clitton Nzogang2, Alexandre Mussi3 and Patrick Cordier3, (1)Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, (2)University of Lille, Villeneuve d'Ascq, France, (3)Université de Lille, UMET, Villeneuve d'Ascq, France
Lower mantle viscosity estimated from the common diffusion mechanism of creep and grain growth (362244)
Atsuro Okamoto and Takehiko Hiraga, Earthquake Research Institute, University of Tokyo, Tokyo, Japan
Neutron imaging for calculating hydrogen diffusivity in polycrystalline forsterite aggregates (372315)
Sarath Kumara Patabendigedara, Macquarie University, Sydney, NSW, Australia, Simon Martin Clark, Macquarie University, Sydney, Australia and Filomena Floriana Salvemin, Australian Nuclear Science and Technology Organisation, Australian Centre for Neutron Scattering, Lucas Heights, NSW, Australia

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