[CIG-ALL] AGU 2019 DI012: Petrological and Thermal Structure of the Mantle from the Transition Zone to the CMB

[Rene Gassmoeller]

Dear Colleagues,

We would like to encourage your participation in our *AGU Fall Meeting 
Session DI012* 
<https://agu.confex.com/agu/fm19/prelim.cgi/Session/79328>: 
"Petrological and Thermal Structure of the Mantle from the Transition 
Zone to the CMB: Causes and Consequences of Phase Transitions." The AGU 
abstract portal is open for submissions and the deadline is July 31st. *
*

*Session Description:*
In the last few decades seismic observations have revealed the structure 
of the mantle in ever increasing richness. Mineral physics experiments 
and theory have been uncovering new phase transitions, characterizing 
changes in the valence and spin state of iron, and determining element 
partitioning behavior in mantle phases. Concurrently, advances in 
seismology and geodynamic modeling have been building a consistent 
picture of Earth in which mantle structures can be identified and their 
importance to mantle dynamics can be understood. We now have evidence of 
seismic structure that is consistent with thermodynamically controlled 
processes, thermal variations due to mantle convection and petrological 
variations possibly due to partial melting, primordial reservoirs, 
mantle segregation and recycling. We seek contributions in experimental, 
theoretical and observational fields, including seismology, petrology, 
mineral physics, geochemistry and geodynamics, which investigate the 
nature and role of phase transitions in the structure and dynamics of 
Earth's interior.
*
*
*Primary Section/Focus Group: *
Study of Earth's Deep Interior

*Invited Presenters:*
Antoniette G. Grima (University College London): "Slab Orphaning: The 
Role of Phase Transitions in Shaping Mid-Mantle Slab Morphologies"
Robert Myhill (University of Bristol): "Iron disproportionation in 
majorite-bearing rocks of the Earth's transition zone and in Mars' deep 
mantle: An experimental study"

*Conveners*:
Rene Gassmoeller (UC Davis)
Renata Schaan (ENS de Lyon)
Natalia Solomatova (CNRS, ENS de Lyon)

*Abstract deadline: *
Wednesday July 31, 2019 at 11:59 PM EDT

We look forward to seeing you in San Francisco!

Best wishes on behalf of the conveners,
Natalia Solomatova, Renata Schaan, Rene Gassmoeller
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