Инд. авторы:	Zedgenizov D.A., Shatsky V.S., Panin A.V., Evtushenko O.V., Ragozin A.L., Kagi H.
Заглавие:	Evidence for phase transitions in mineral inclusions in superdeep diamonds of the Sao Luiz deposit (Brazil)
Библ. ссылка:	Zedgenizov D.A., Shatsky V.S., Panin A.V., Evtushenko O.V., Ragozin A.L., Kagi H. Evidence for phase transitions in mineral inclusions in superdeep diamonds of the Sao Luiz deposit (Brazil) // Russian Geology and Geophysics. - 2015. - Vol.56. - Iss. 1-2. - P.296-305. - ISSN 1068-7971. - EISSN 1878-030X.
Внешние системы:	DOI: 10.1016/j.rgg.2015.01.021; РИНЦ: 24019096; SCOPUS: 2-s2.0-84925303931; WoS: 000351312200021;
Реферат:	eng: Evidence for phase transitions in mineral inclusions in superdeep diamonds of alluvial placers in the Sao Luiz River deposits (Brazil) is obtained by the electron backscatter diffraction technique. It has been shown that the crystal structure of superdeep diamonds is significantly deformed around inclusions of MgSi-, CaSi-, and CaTiSi-perovskites, SiO2 (stishovite?), and Mg2SiO4 (ringwoodite?). On the contrary, significant deformations around inclusions of olivine, ferropericlase, and majoritic garnet are not detected. The absence of deformation near these minerals reveals the lack of phase transitions with dramatic volume changes. The present study suggests that the formation of superdeep diamonds proceeds at different levels of the sublithospheric mantle, transition zone, and lower mantle. (C) 2015, V.S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.
Ключевые слова:	SYSTEM; KIMBERLITE; JUINA AREA; MATO-GROSSO; OCEANIC-CRUST; ISOTOPE RATIOS; KANKAN DIAMONDS; SEISMIC DISCONTINUITY; DEEP MANTLE; LOWER-MANTLE DIAMONDS; lower mantle; transition zone; upper mantle; superdeep minerals; deformation; inclusions; diamond;
Издано:	2015
Физ. характеристика:	с.296-305