DI53A:
Constraints on Heterogeneities in Earth's Mantle II


Session ID#: 8657

Session Description:
Convection processes in the Earth's mantle drive plate tectonics and control the heat flux from the Earth’s core to the surface. Processes such as mixing, melting, and differentiation will lead to heterogeneities in the mantle ranging in size from thousands of kilometres to the crystal scale. Using a variety of techniques we are able to sample and image these heterogeneities, but a multi-disciplinary approach integrating the individual results is necessary to understand how Earth evolved and how they influence convection in the Earth.

This multi-disciplinary session will bring together researchers interested in the structure and dynamics of heterogeneities in the Earth’s mantle from crust to core. We invite contributions from all interested disciplines including (but not limited to) seismology, geology, petrology geochemistry, geodynamics, mineral physics, geodesy, electromagnetism, and geophysics. Contributions studying all scales of heterogeneities are welcome.
Primary Convener:  Sebastian Rost, University of Leeds, School of Earth and Environment, Leeds, LS2, United Kingdom
Conveners:  Christopher Harig, Princeton University, Department of Geosciences, Princeton, NJ, United States and Lowell M Miyagi, University of Utah, Department of Geology and Geophysics, Salt Lake City, United States
Chairs:  Christopher Harig, Princeton University, Department of Geosciences, Princeton, NJ, United States and Jonathan E Mound, University of Leeds, School of Earth and Environment, Leeds, United Kingdom
OSPA Liaison:  Lowell M Miyagi, University of Utah, Department of Geology and Geophysics, Salt Lake City, United States

Cross-Listed:
  • G - Geodesy
  • MR - Mineral and Rock Physics
  • S - Seismology
Index Terms:

1212 Earth's interior: composition and state [GEODESY AND GRAVITY]
1213 Earth's interior: dynamics [GEODESY AND GRAVITY]
3621 Mantle processes [MINERALOGY AND PETROLOGY]
7208 Mantle [SEISMOLOGY]

Abstracts Submitted to this Session:

Reconcile Mantle Dynamic Models with Compositionally Distinct and Stable LLSVPs with the Observations of the Geoid and Dynamic Topography (84648)
Xi Liu, California Institute of Technology, Pasadena, CA, United States and Shijie Zhong, University of Colorado at Boulder, Department of Physics, Boulder, United States
The development of small-scale convection below evolving oceanic plates (77846)
Nicolas Coltice, LGLTPE Laboratoire de Géologie de Lyon : Terre, Planètes et Environnement, Villeurbanne Cedex, France and Edward Garnero, Arizona State University, School of Earth and Space Exploration, Tempe, AZ, United States
Compositional mantle layering revealed by slab stagnation at ~1,000 km depth (Invited) (69397)
Maxim Ballmer, University College London, ETH Zürich, London, United Kingdom; Tokyo Institute of Technology, ELSI, Tokyo, Japan, Takashi Nakagawa, University of Hong Kong, Department of Earth Sciences, Hong Kong, Hong Kong, Nicholas C Schmerr, University of Maryland College Park, Department of Geology, College Park, United States, Jeroen Ritsema, Univ Michigan, Ann Arbor, MI, United States and Matthew Motoki, University of Hawaii at Manoa, Honolulu, HI, United States
The heterogeneity spectrum of Earth’s upper mantle constrained by global observations of scattered P-waves (62807)
Nicholas J Mancinelli, Scripps Institution of Oceanography, La Jolla, CA, United States, Peter M Shearer, University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, Dave R Stegman, University of California San Diego, La Jolla, CA, United States and Qinya Liu, University of Toronto, Department of Physics, Toronto, ON, Canada
Seismic detection of oceanic crust in Earth’s lower mantle and its relation to large-scale mantle structure (Invited) (77491)
Daniel Andrew Frost, Arizona State University, Tempe, United States, Sebastian Rost, University of Leeds, COMET, School of Earth and Environment, Leeds, LS2, United Kingdom and Edward Garnero, Arizona State University, School of Earth and Space Exploration, Tempe, AZ, United States
P- and S-wave Slowness Anomalies in the Mantle (62674)
Yao Yao, University of Utah, Geology and Geophysics, Salt Lake City, UT, United States and Michael Scott Thorne, University of Utah, Salt Lake City, UT, United States
Os-isotopic Compositions of Peridotite Xenoliths from the Oceanic Mantle: Implications for the Age of Isotopic Domains in the Oceanic Mantle. (Invited) (73323)
Matthew G Jackson, University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States, Steven B Shirey, Carnegie Science, Earth and Planets Laboratory, Washington, United States, Erik H Hauri, Carnegie Institution for Science Washington, Washington, DC, United States and Mark D Kurz, WHOI, Department of Marine Chemistry & Geochemistry, Woods Hole, United States
High-pressure, temperature elasticity of Fe- and Al-bearing MgSiO3: implications for the Earth’s lower mantle (72881)
Shuai Zhang, University of California Berkeley, Berkeley, CA, United States, Sanne Cottaar, University of Cambridge, Cambridge, United Kingdom, Tao Liu, University of Leeds, Leeds, United Kingdom, Stephen Stackhouse, University of Leeds, School of Earth and Environment, Leeds, United Kingdom and Burkhard Militzer, University of California Berkeley, Department of Astronomy, Berkeley, CA, United States

See more of: Study of Earth's Deep Interior