DI23A:
Across the Scales: Earth's Mantle Dynamics through Space and Time II


Session ID#: 8632

Session Description:
From small-scale convection underneath tectonic plates to huge thermochemical features such as the LLSVPs in the lower mantle, mantle dynamics is a multi-scale process! It includes everything from the cooling of the early magma ocean, to the formation of plumes, the assembly of supercontinents and the long-term secular cooling. Revealing how processes on these different temporal and spatial scales operate, interact, and produce surface observations in volcanism, tectonics, gravity anomalies and sea-level changes is thus of great importance for understanding Earth’s evolution and dynamics. This session aims to shed light on these processes, including (but not limited to) formation and dynamics of mantle structures, dynamics of plate tectonics and continental drift, and magma ocean dynamics. We welcome theoretical, numerical, laboratory and observational studies from a wide range of disciplines that contribute to understanding these multi-scale processes.
Primary Convener:  Keely Anne O'Farrell, University College London, London, United Kingdom
Conveners:  Tobias Rolf, University of Oslo, Centre for Earth Evolution and Dynamics (CEED), Oslo, Norway, Shijie Zhong, University of Colorado at Boulder, Department of Physics, Boulder, United States and Anne Davaille, CNRS / University Paris-Sud, Laboratoire FAST, Orsay, France
Chairs:  Shijie Zhong, University of Colorado at Boulder, Department of Physics, Boulder, United States and Keely Anne O'Farrell, University College London, London, United Kingdom
OSPA Liaison:  Tobias Rolf, University of Oslo, Centre for Earth Evolution and Dynamics (CEED), Oslo, Norway

Cross-Listed:
  • NG - Nonlinear Geophysics
  • P - Planetary Sciences
  • T - Tectonophysics
  • V - Volcanology, Geochemistry and Petrology
Co-Sponsor(s):
  • EGU-GD: European Geosciences Union - Division on Geodynamics -
Index Terms:

1038 Mantle processes [GEOCHEMISTRY]
7208 Mantle [SEISMOLOGY]
8122 Dynamics: gravity and tectonics [TECTONOPHYSICS]
8125 Evolution of the Earth [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Mantle Convection in a Microwave Oven: New Perspectives for the Internally Heated Convection (Invited) (60497)
Angela Limare1, Loic Fourel1, Emanoil Surducan2, Camelia Neamtu2, Vasile Surducan2, Kenny Vilella1, Cinzia G. Farnetani1, Edouard Kaminski1 and Claude P Jaupart3, (1)Institut de Physique du Globe de Paris, Paris, France, (2)INCDTIM, Cluj-Napoca, Romania, (3)Université de Paris, Institut de Physique du Globe de Paris (IPGP), UMR 7154, Paris, France
Iron-spin transition controls structure and stability of LLSVPs in the lower mantle (Invited) (60199)
Wei Leng, University of Science and Technology of China, Hefei, China, Chuan Huang, Curtin University, Earth Dynamics Research Group, The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Perth, WA, Australia and Zhongqing Wu, University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China
Pattern recognition constrains mantle properties, past and present (66088)
Suzanne Atkins1, Antoine Billy Rozel2, Andrew P Valentine3, Paul Tackley4 and Jeannot Trampert1, (1)Utrecht University, Utrecht, Netherlands, (2)ETH Zurich Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (3)Australian National University, Canberra, ACT, Australia, (4)ETH Zurich, Zurich, Switzerland
Slab Stagnation: How, When, and Where? (Invited) (59140)
Scott D. King, Virginia Tech, Department of Geosciences, Blacksburg, VA, United States, Daniel J Frost, Bayreuth Geoinstitut, Bayerisches Geoinstitut, Bayreuth, Germany and David C Rubie, University of Bayreuth, Bayreuth, Germany
Using “Ridge-Spotting” as a Test for Pacific Absolute Plate Motion Models (77597)
Paul Wessel, University of Hawaii at Manoa, Earth Sciences, Honolulu, HI, United States, Dietmar Müller, University of Sydney, Sydney, NSW, Australia and Simon Williams, Department of Geology, Northwest University, Xi’an, China
Interactions among mid-ocean ridges, plumes and Large Igneous Provinces (Invited) (63018)
Joanne M Whittaker, University of Tasmania, Hobart, TAS, Australia, Juan Carlos Afonso, Macquarie University, Sydney, NSW, Australia, Sheona M Masterton, GETECH, Leeds, United Kingdom, Dietmar Müller, University of Sydney, Sydney, NSW, Australia, Paul Wessel, University of Hawaii at Manoa, Earth Sciences, Honolulu, HI, United States, Simon Williams, Department of Geology, Northwest University, Xi’an, China and Maria Seton, The University of Sydney, EarthByte Group, School of Geosciences, Sydney, NSW, Australia
Testing geodynamic models of lowermost mantle flow with a regional shear wave splitting data set (85220)
Heather A Ford, Yale University, New Haven, United States and Maureen D Long, Yale University, Department of Earth & Planetary Sciences, New Haven, United States
Tomographic Stratigraphy: a Possible New Framework for Mantle Dynamics (76342)
Adam M Dziewonski, Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States and Barbara A Romanowicz, University of California Berkeley, Department of Earth and Planetary Science, Berkeley, CA, United States; Institut de Physique du Globe, Paris, France

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