DI004
Chemistry and Physics of Earth’s Outer Core and its Boundaries
Session ID#: 252325
Session Description:
Understanding Earth’s outer core and its boundaries, core-mantle boundary (CMB) and inner core boundary (ICB), is essential to advancing knowledge of planetary evolution and deep Earth processes. These regions are interconnected through physical, chemical, and dynamic processes—including heat and mass transport, as well as magnetic field generation. We invite contributions from geochemistry, cosmochemistry, mineral physics, seismology, and geodynamics to explore key questions involving mantle-core exchange and coupling; ultra-low velocity zones; metal-silicate partitioning, geochemical phase relations, and the influence of early magma ocean processes on core formation; outer core composition and stratification; seismic anisotropy, inner core composition and crystallization. We particularly encourage submissions using theoretical modeling, first-principles simulations, high-pressure experiments, and geophysical observations to probe the inaccessible deep interior. Such discussions promote interdisciplinary collaboration aimed at refining our understanding of the thermal and compositional state of Earth's deep interior and the dynamic processes connecting the CMB to the ICB.
Co-Sponsor(s):
Index Terms:
3914 Electrical properties [MINERAL PHYSICS]
3919 Equations of state [MINERAL PHYSICS]
3924 High-pressure behavior [MINERAL PHYSICS]
3944 Shock wave experiments [MINERAL PHYSICS]
Primary Convener: Sajin Satyal, Geochemical Society, Albuquerque, NM, United States; Louisiana State University, Baton Rouge, United States
Convener: Jianwei Wang, Louisiana State University, Baton Rouge, LA, United States
Sm/Nd Partitioning During Core–Mantle Differentiation:First-Principles Constraints and Implications for radiogenic 142Nd excess in Earth, Mars, and Early Planetesimals. (1913774)
Weiyi Liu, Scripps Institution of Oceanography, Geosciences Research Division, La Jolla, United States; The Isotoparium, California Institute of Technology, Pasadena, United States, Francois Tissot, California Institute of Technology, Isotoparium, Pasadena, United States and Paul D Asimow, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States
Testing the Limits of Outermost Core Low-velocity Layer Detection with SmKS Phases (1921575)
Yangtianli Zhou, Rice University, Houston, TX, United States, Brandon Schmandt, Rice University, Houston, United States and Fenglin Niu, University of Science and Technology of China (USTC), Anhui, China
Helicity in Rotating Convection with Boundary Topography: Experimental Insights from ToRoCo and Implications for Core Dynamics (1931441)
Xinyu Si1, Mohammad Abdelshafy2, Jonathan Shuo Cheng3 and Douglas H Kelley2, (1)University of Rochester, Mechanical Engineering, Rochester, NY, United States, (2)University of Rochester, Rochester, United States, (3)US Naval Academy, Annapolis, United States
Effect of topography on rotating convection (1952193)
Ankit Barik, Johns Hopkins University, Department of Earth and Planetary Sciences, Baltimore, MD, United States and Benjamin Favier, Aix Marseille Univ, CNRS, Centrale Marseille, IRPHE, Marseille, France
Scenarios for Earth's Outer Core Composition Based on a Density Model of Multi-Component Iron-Rich Alloys (1968529)
Sajin Satyal, Geochemical Society, Albuquerque, NM, United States; Louisiana State University, Baton Rouge, United States and Jianwei Wang, Louisiana State University, Baton Rouge, LA, United States
Turbulent core convection with core mantle boundary topography (1985826)
Tobias Oliver, University of Colorado, Boulder, Physics Department, Boulder, United States, John Anthony Tarduno, University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States, Eric Blackman, University of Rochester, Rochester, United States and Michael A Calkins, University of Colorado, Boulder, Department of Physics, Boulder, CO, United States
