DI008
Mantle Convection on Earth and Other Rocky Planets
Session ID#: 252484
Session Description:
Mantle convection plays a central role in shaping the Earth and other rocky planets throughout their history. Following the magma ocean stage, long-term solid-state mantle convection initiates and is coupled to the dynamics of the mantle-lithosphere system, compositional differentiation or mixing, possible core-mantle reactions, melting and crustal production, surface tectonics, etc. All these processes are interconnected and can be studied through observations of the rock record, geochemistry, seismology, gravity, magnetism and planetary remote sensing, all linked through geodynamical modelling constrained by physical properties of relevant materials.This session aims at understanding mantle convection and how it relates to the dynamics, tectonics, structure, composition and evolution of Earth and other rocky planetary bodies on temporal scales ranging from the present day to billions of years, and on spatial scales ranging from microscopic to global, by bringing together constraints from geodynamics, seismology, mineral physics, geochemistry, petrology, volcanology, planetary science and astronomy.
Co-Sponsor(s):
Index Terms:
5430 Interiors [PLANETARY SCIENCES: SOLID SURFACE PLANETS]
8121 Dynamics: convection currents, and mantle plumes [TECTONOPHYSICS]
8124 Earth's interior: composition and state [TECTONOPHYSICS]
8125 Evolution of the Earth [TECTONOPHYSICS]
Primary Convener: Diogo José Louro Lourenço, ETH Zurich, Earth and Planetary Sciences, Zurich, Switzerland
Conveners: Shi Sim, Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, United States and Paul J Tackley, ETH Zurich, Department of Earth and Planetary Sciences, Zürich, Switzerland
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Hugo Remise-Charlot, Laboratoire FAST, LLB, (CEA/CNRS/Université Paris-Saclay), Orsay, France, Victor Lherm, Laboratoire FAST (CNRS/Université Paris-Saclay), Orsay, France, Alban Aubertin, FAST (CNRS/Université Paris-Saclay), Orsay, France, Lukas Helfen, Institut Laue-Langevin, Grenoble, France, Christiane Alba-Simionesco, Laboratoire Léon Brillouin (CEA/CNRS), Gif-sur-Yvette, France and Anne Davaille, CNRS / University Paris-Saclay, FAST, Orsay, France
Primordial Origin of LLVPs as Continuous Layer Inconsistent with Archean Mantle Melting: Insights from Geodynamic Models (1862940)
Arnab Roy, PhD, University of Idaho, Department of Earth and Spatial Sciences, Moscow, United States, Eric L Mittelstaedt, University of Idaho, Department of Earth and Spatial Sciences, Moscow, ID, United States and Catherine M Cooper, WSU, School of the Environment, Pullman, United States
Investigating the Cessation of Convection in Mercury’s Mantle (1879548)
Chhavi Jain, Washington University in St Louis, Department of Earth, Environmental, and Planetary Sciences, St. Louis, United States and Slava Solomatov, Washington University in St. Louis, St Louis, MO, United States
Earth’s Shifting Tectonic Modes: The Thermo-Rheological Legacy of a Depleting Mantle (1895397)
Fabio A Capitanio, Monash University, School of Earth, Atmosphere and Environment, Melbourne, VIC, Australia, Oliver Nebel, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Peter A. A. Cawood, Monash University, Earth, Atmosphere and Environment, Melbourne, VIC, Australia and Hugh Smithies, Curtin University, Perth, Australia
Modelling of Plate Boundary Dynamics from Earth to Venus (1908334)
Michaël Pons, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, Stephan V. Sobolev, Geo Forschungs Zentrum Potsdam, 2.5, Potsdam, Germany and Charitra Jain, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Geodynamic Modelling Section, Potsdam, Germany
Local patches of negative core-mantle boundary heat flux revealed by simulations of thermo-chemical mantle convection (1915989)
Frederic Deschamps1, Joshua Guerrero1, Hagay Amit2 and Filipe Terra-Nova3, (1)Academia Sinica, Institute of Earth Sciences, Taipei, Taiwan, (2)University of Nantes, Laboratory of Planetology and Geosciences, Nantes Cedex 03, France, (3)University of Nantes, Laboratory of Planetology and Geosciences, Nantes, France
A Thin Shell’s Last Gasp: An Endogenic Origin for Mercury’s Northern Smooth Plains (1927559)
Austin Patrick Green1, Scott D. King2, Megan S Duncan2 and Ekanshu Mallick3, (1)Virginia Polytechnic Institute and State University, Geosciences, Blacksburg, United States, (2)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (3)Virginia Polytechnic Institute and State University, Blacksburg, United States
Inertia-Corrected Equatorial Core-Mantle-Boundary Heat Flux Heterogeneities are correlated with reversal rates from 200 Ma (1930716)
Annalise Cucchiaro1, Nicolas E Flament1, Prof. Christopher J Davies2, Andy Biggin3 and Dr. Jiaxin Zhang1, (1)University of Wollongong, Environmental Futures, School of Science, Wollongong, NSW, Australia, (2)University of Leeds, School of Earth and Environment, Leeds, United Kingdom, (3)Geomag lab, University of Liverpool, Department of Earth, Oceans and Ecological Sciences, Liverpool, United Kingdom
Modeling the Lunar Magma Ocean Under Tidal Deformation at Close Proximity of Earth (1944875)
Daniel Astudillo1, Paul J Tackley2, Diogo José Louro Lourenço3 and Albert De Montserrat Navarro1, (1)ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland, (2)ETH Zurich, Department of Earth and Planetary Sciences, Zürich, Switzerland, (3)ETH Zurich, Earth and Planetary Sciences, Zurich, Switzerland
Rheological Controls on the Plate-Mantle System: Self-Consistent vs. Kinematically Constrained Models (1948023)
Marla Metternich, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland, Paul J Tackley, ETH Zurich, Department of Earth and Planetary Sciences, Zürich, Switzerland, Maëlis Arnould, University of Lyon 1, Laboratoire de Géologie de Lyon, Lyon, France and Alexandre Janin, Boston College, Department of Earth and Environmental Sciences, Chestnut Hill, United States
Structure and Dynamics of the Subcontinental Lithospheric Mantle Over the Central and Eastern American Continent, Constrained by Numerical Modeling Based on Tomography Models (1958743)
Medini Abeysinghe, Kansas State University, Manhattan, KS, United States, Claudia Adam, Kansas State University, Department of Geology, Manhattan, KS, United States and Brice Lacroix, Kansas State University, Department of Geology, Manhattan, United States
A Tale of Dual Insulators – Exploring the Effects of Heat-Producing Elements Sequestered in the Continents and LLVPs on Earth’s Mantle Dynamics and Thermal Evolution (1961614)
Anna Sage Ross-Browning1,2, Eric L Mittelstaedt1, Catherine M Cooper3 and Arnab Roy, PhD4,5, (1)University of Idaho, Department of Earth and Spatial Sciences, Moscow, ID, United States, (2)University of Idaho, Department of Physics, Moscow, ID, United States, (3)WSU, School of the Environment, Pullman, United States, (4)Jadavpur University, Department of Geological Sciences, Kolkata, India, (5)University of Idaho, Department of Earth and Spatial Sciences, Moscow, United States
The "Glass-ceiling" Convective Regime and the Plume-Thermal Dichotomy of Venus (1978077)
Madeleine Kerr, Institute of Geophysics and Planetary Physics La Jolla, La Jolla, United States, Dave R Stegman, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, Suzanne E Smrekar, JPL/NASA/Caltech, Pasadena, United States and Andrea Adams, NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States
The Distribution of Water in the Mantle and its Effect on Tectonic Transitions (1979261)
Manar Al Asad, Harvard University, Department of Earth and Planetary Sciences, Cambridge, United States, Harriet C.P. Lau, Brown University, Earth, Environmental, and Planetary Sciences, Providence, United States and Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States
Rheological feedbacks and plate-like behavior in geodynamic models (1985046)
Peter E van Keken1, Cian R Wilson1, Ningli Zhao1 and Miki Nakajima2, (1)Carnegie Science, Earth & Planets Laboratory, Washington, United States, (2)University of Rochester, Physics and Astronomy, Rochester, NY, United States
