DI010
Heterogeneity in the Earth: Multi-disciplinary Perspectives from Imaging, Modeling, Geochemistry and Experiments
Session ID#: 79800
Session Description:
Studies of heterogeneity provide a critical record of potential geochemical reservoirs, long-term tectonic processes and current snapshots of the Earth’s deep interior. Recent progress in seismology, geochemistry, geodynamics, and mineral physics constrain heterogeneity across a range of spatial scales. Advancements in imaging with the full spectrum of seismic data have afforded multi-scale constraints on parameters like attenuation, anisotropy, and density. New geochemical data have refined our understanding of Earth accretion, differentiation, and the onset of plate tectonics. Experimental and computational studies of mineral physics have improved constraints on materials at extreme conditions, permitting advanced geodynamic reconstructions. Heterogeneity implies variation in intrinsic properties like temperature, composition, grain size, or crystal structure, effects that need to be deconvolved through observations, experiments and atomistic simulations. We invite submissions that employ novel analytical and visualization techniques to explore the nature of heterogeneities and their relation to surface observables at local, regional, and global scales.
Index Terms:
1038 Mantle processes [GEOCHEMISTRY]
7270 Tomography [SEISMOLOGY]
8115 Core processes [TECTONOPHYSICS]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]
Primary Convener: Pritwiraj Moulik, University of Maryland College Park, Department of Geology, College Park, MD, United States
Conveners: Eva Bredow, GFZ Potsdam, Potsdam, Germany, Jie Deng, University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, CA, United States and Curtis D Williams, University of California Davis, Earth and Planetary Sciences, Davis, CA, United States
Primary Liaison: Pritwiraj Moulik, Lamont -Doherty Earth Observatory, Palisades, NY, United States
Growth and Recycling of Archean Continental Crust in Numerical Simulations of Mantle Convection (Invited) (494741)
Charitra Jain1,2, Antoine Rozel3, Paul J Tackley3, Patrick Sanan2 and Taras Gerya2, (1)University of Durham, Department of Earth Sciences, Durham, United Kingdom, (2)ETH Zurich, Department of Earth Sciences, Zurich, Switzerland, (3)ETH Zürich, Department of Earth Sciences, Zürich, Switzerland
Scales and Velocity Contrasts of Scatterers in the Lower Mantle using USArray Recordings of S-wave to P-wave Conversions (500350)
Jeroen Ritsema, University of Michigan Ann Arbor, Department of Earth and Environmental Sciences, Ann Arbor, MI, United States, Samuel McRae Haugland, Colorado School of Mines, Department of Geophysics, Golden, CO, United States and Satoshi Kaneshima, Kyushu University, Fukuoka, Japan
The density of LLSVPs: towards reconciling results from modes and tides (514695)
Alex Robson, Berkeley Seismological Lab, Berkeley, CA, United States, Barbara Romanowicz, Collège de France, IPGP, UNIVERSITY OF BERKELEY, Paris, France and Harriet C. P. Lau, University of California Berkeley, Berkeley, CA, United States
Experimental results of pressure and oxygen fugacity effects on metallic Fe formation from (Mg, Fe)O (517288)
Yanjun Xiao, Peking University, Earth and space science, Beijing, China, Shun-ichiro Karato, Yale University, Geology and Geophysics, New Haven, CT, United States, Jennifer Girard, Yale University, New Haven, CT, United States, Patrick Cordier, University of Lille, Villeneuve d'Ascq, France and Yonghong Zhao, Peking Univ, Beijing, China
Investigating Pb Isotope Systematics Using 3D Geodynamic Models. (539207)
James Panton1, Huw Davies1, Tim Elliott2, Morten Andersen1 and Matthew Price1, (1)Cardiff University, Earth and Ocean Sciences, Cardiff, United Kingdom, (2)University of Bristol, School of Earth Sciences, Bristol, United Kingdom
Upper Mantle Temperature of Hotspots and Ridges and Correlation with Geochemical Signals (552622)
Xiyuan Bao, University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States, Carolina R Lithgow-Bertelloni, University of California Los Angeles, Los Angeles, CA, United States and Matthew G Jackson, University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States
An Agnostic Tool for Interpreting Shear and Compressional Velocity Tomography (572659)
Christine T Houser1, John W Hernlund1 and Vedran Lekic2, (1)Earth-Life Science Institute, Meguro, Tokyo, Japan, (2)University of Maryland, Department of Geology, College Park, MD, United States
Constraints on Primordial Heterogeneity Preservation in the Lower Mantle and Implications for Global-Scale Mantle Dynamics (573945)
Anna J. P. Gülcher1, Maxim Ballmer1,2 and Paul J Tackley1, (1)ETH Zürich, Department of Earth Sciences, Zürich, Switzerland, (2)University College London, Dept. Earth Sciences, London, United Kingdom
Rapid prototyping, interactive visualization and data validation methods for models of planetary interiors (609793)
Pritwiraj Moulik, University of Maryland College Park, Department of Geology, College Park, MD, United States, Ross Maguire, University of Maryland, College Park, Department of Geology, College Park, MI, United States, Christopher Havlin, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Chao Gao, University of Maryland College Park, Dept. of Geology, College Park, MD, United States and Vedran Lekic, University of Maryland, Department of Geology, College Park, MD, United States
Regionalized properties of the lowermost mantle from spherical Slepian analysis (610005)
Tolulope M Olugboji, University of Rochester, Earth and Environmental Sciences, Rochester, NY, United States, Pritwiraj Moulik, Lamont -Doherty Earth Observatory, Palisades, NY, United States, Alain Plattner, Princeton University, Princeton, NJ, United States and Vedran Lekic, University of Maryland, Department of Geology, College Park, MD, United States
The 3D Reference Earth Model Project: Data, Model and Tools (610523)
Vedran Lekic1, Pritwiraj Moulik1 and Barbara Romanowicz2, (1)University of Maryland College Park, Department of Geology, College Park, MD, United States, (2)Collège de France, IPGP, UNIVERSITY OF BERKELEY, Paris, France
