SMEC 2003
March 24-27


Symposium 8


Wednesday March 26 th , 8:30-16:00


Phases in Earth’s Interior  


Convener: A. Goresey and L. Dubrovinsky


I. Post-Stishovite Polymorphs of Silica: First Principles Calculations, High-Pressure Experiments and Natural Occurrences

Chair: F. Seifert  


Time


Authors/Title


8:30


B. B. Karki:

Structure and Elasticity of Post-Stishovite Polymorphs From First Principles.  


9:00


L. Dubrovinsky:

Class of High-Pressure Silica Polymorphs.


9:30


A. El Goresy, L. Dubrovinsky, T. G. Sharp and M. Chen:

Natural post-stishovite polymorphs of silica in the Shergotty meteorite: Their nature versus theoretical predictions and relevance to the Earth's mantle


10:00-10:30


Break


10:30


C. Prewitt: 

Crystallography of High-Pressure SiO2 Phases.  


11:00


V. Prakapenka, G. Shen, M. Rivers, S. Sutton:

High pressure induced phase transformation of SiO2 and GeO2: difference and similarity.


II.
The Perovskite Stability Under Lower Mantle Conditions

Chair: C. Prewitt


11:30


T. Yagi:

Effect of minor elements on the elastic property of silicate perovskite.  


12:00


F. Seifert:

Oxygen defects in Si- and Ti-perovskites.


12:30-13:30
 


Lunch


III. Melting Behavior and State of
Iron Under Core Conditions

Chair: Peter Liermann


13:30


R. Boehler:

Melting Curve of Iron: Diverging Consensus?


14:00


G. Shen:

Structures of iron phases at high P-T: Role of stacking sequences.


14:30
 


A. Belonoshko:

Melting of Iron Under Pressure: Computational View Point


15:00

 
D. Alfé:

The High Pressure Melting Curve of Fe From ab initio Calculations.


Abstract Symposium 8


Session Contact:

Ahmed El Goresey, Max-Planck-Institute of Chemistry, Joh.-J.-Becher-Weg 27, University Campus, D-55128 Mainz, Germany, Tel: +49 6131 305 292, e-mail: goresy@mpch-mainz.mpg.de.



Last updated, 6th March, 2003 
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