Melting and phase relations of carbonated eclogite at 9-21GPa and the petrogenesis of alkali-rich melts in the deep mantle

Kiseeva, EkaterinaKonstantin, LitasovYaxley, GregoryOhtani, EijiKamenetsky, Vadim S2015-12-130022-3530http://hdl.handle.net/1885/73456The melting and phase relations of carbonated MORB eclogite have been investigated using the multi-anvil technique at 921GPa and 1100-19008C. The starting compositions were two synthetic mixes, GA1 and Volga, with the CO2 component added as CaCO3 (cc): GAKeywords: aragonite; carbonate; clinopyroxene; diamond; eclogite; garnet; high pressure; kimberlite; magnesite; mantle; melting; metasomatism; mid-ocean ridge basalt; oceanic crust; P-T conditions; petrogenesis; transition zone Carbonate metasomatism; Diamonds; High-pressure experiments; Kimberlite formation; Mantle; MORB eclogite; Transition ZoneMelting and phase relations of carbonated eclogite at 9-21GPa and the petrogenesis of alkali-rich melts in the deep mantle201310.1093/petrology/egt0232016-02-24