Other
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1237k&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1237
Other
Scientific paper
Material scientific investigation suggests transformed eclogite becomes denser than the mantle at the base of the crust. The possibility of delamination of eclogite crust and subsequent overturn is estimated by Ferrachat et al[7]. Once this overturn occurs the mantle material should be displaced to the shallower position. If mantle geotherm was close to the solidus, which is suggested by high dissipation of tidal energy[8] and also thermochemical simulation on the thermal history[9] , decompressional melting should be induced. Since there exist significant difference in the thermal gradient between solidus and mantle adiabat at low pressure regime decompressional melting generates higher degree of melting. We consider this process is responsible for the formation of flood style volcanism. The preferential localization to the dichotomy boundary is also consistent with the delamination.
Kurita Kazuyoshi
Ohmori Shousuke
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