GP23A:
Motion Between Hot Spots and True Polar Wander I


Submit an Abstract to this Session


Session ID#: 56751

Session Description:
In a convecting planet, mantle plumes and their surface manifestations, hotspots, doubtless are in relative motion. Past estimates of rates of motion between hotspots span an enormous range, however, from as low as ~3 mm/yr to as high as ~80 mm/yr.   Paleomagnetic investigations have established that some hotspots have moved significantly relative to the spin axis, which was originally interpreted as evidence for true polar wander, the motion of the entire solid Earth relative to the spin axis. Some later investigations have argued that the motion records true polar wander while other investigations argue that it records motion of hotspots relative to one another and relative to the deep mantle. Recently new evidence has been presented supporting both relatively slow motion between hotspots on the one hand and rapid motion between hotspots on the other. We encourage submissions related to any and all aspects of these phenomena.
Primary Convener:  Richard G Gordon, Rice University, Houston, TX, United States
Conveners:  Paul Wessel, University of Hawaii at Manoa, Honolulu, HI, United States, Joann M Stock, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States and Jason Phipps Morgan, Royal Holloway University of London, Egham, United Kingdom
Primary Liaison:  Richard G Gordon, Rice University, Houston, TX, United States
Chairs:  Joann M Stock, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States and Jason Phipps Morgan, Royal Holloway University of London, Egham, United Kingdom
OSPA Liaison:  Paul Wessel, University of Hawaii at Manoa, Honolulu, HI, United States
Co-Organized with:
Geomagnetism, Paleomagnetism and Electromagnetism, and Tectonophysics

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • G - Geodesy
  • T - Tectonophysics

Proposed Co-Organized Session with:
  • T - Tectonophysics
Index Terms:

1229 Reference systems [GEODESY AND GRAVITY]
1525 Paleomagnetism applied to tectonics: regional, global [GEOMAGNETISM AND PALEOMAGNETISM]
8137 Hotspots, large igneous provinces, and flood basalt volcanism [TECTONOPHYSICS]
8158 Plate motions: present and recent [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Hotspot and LLSVP Motion (Invited) (353015)
John Anthony Tarduno, University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States and Richard Bono, University of Liverpool, Liverpool, United Kingdom
Determining Relative Mantle Plume Motion Using Hotspot Track Geometry, Geochronology and Geochemistry. (Invited) (376001)
Kevin Konrad, Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, OR, United States, Anthony Koppers, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Bernhard M Steinberger, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany; University of Oslo, CEED, Oslo, Norway, Val Finlayson, University of Maryland College Park, Department of Geology, College Park, MD, United States, Jasper G Konter, University of Hawaii at Manoa, SOEST, Honolulu, HI, United States and Matthew G Jackson, University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States
Absolute Plate and Plume Motions and Implications for True Polar Wander (397374)
Paul Wessel, University of Hawaii at Manoa, Earth Sciences, Honolulu, HI, United States and Clinton P Conrad, University of Oslo, Centre for Planetary Habitability, Oslo, Norway
Apparent Polar Wander of the Pacific Plate Over the Past 80 Ma: Implications for Motion Between Hotspots, Origin of the Hawaiian-Emperor Bend, True Polar Wander, and Global Climate Change (455837)
Richard G Gordon1, Daniel Woodworth2 and Lily Seidman1, (1)Rice University, Houston, TX, United States, (2)Rice University, Houston, United States
Lateral motion of mantle plumes in 3D geodynamic models (369288)
Mingming Li, Arizona State University, School of Earth and Space Exploration, Tempe, United States and Shijie Zhong, University of Colorado at Boulder, Department of Physics, Boulder, United States
A rapid burst in hotspot motion through the interaction of tectonics and deep mantle flow (374159)
Rakib Hassan, University of Sydney, Sydney, Australia, Dietmar Müller, The University of Sydney, EarthByte Group, School of Geosciences, Sydney, NSW, Australia, Michael Gurnis, California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States, Simon Williams, University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, Australia and Nicolas E Flament, University of Wollongong, Environmental Futures, School of Science, Wollongong, NSW, Australia
A high-fidelity 165 Ma paleomagnetic pole from Northern Chile with implications for Late Jurassic true polar wander (402678)
Roger R Fu, Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States, Dennis V Kent, Lamont -Doherty Earth Observatory of Columbia University, Paleomagnetics Lab, Palisades, United States, Jessica R Creveling, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States and Sidney R Hemming, Lamont-Doherty Earth Observatory, Palisades, NY, United States
Record of the Late Jurassic true polar wander from the Northern Apennines (Italy) (411409)
Sara Satolli, University of Chieti-Pescara, Department of Engineering and Geology, Pescara, Italy and Jean Besse, Institut de Physique du Globe de Paris, Paris, France

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