Инд. авторы:	Lepezin G.G.
Заглавие:	Material Transfer through the Interface between Peraluminous Metapelite and Gedrite-Bearing Gneiss at High Temperatures and Moderate Pressures
Библ. ссылка:	Lepezin G.G. Material Transfer through the Interface between Peraluminous Metapelite and Gedrite-Bearing Gneiss at High Temperatures and Moderate Pressures // Geochemistry International. - 2015. - Vol.53. - Iss. 1. - P.39-59. - ISSN 0016-7029. - EISSN 1531-8397.
Внешние системы:	DOI: 10.1134/S0016702914110032; РИНЦ: 24022764; SCOPUS: 2-s2.0-84919898058; WoS: 000346639200004;
Реферат:	eng: Relations between gedrite-bearing gneisses and aluminous metapelites were studied in amphibolite- and granulite-facies rocks in the Sharyzhalgai Complex, Eastern Sayan. The rocks show reaction relations and provide evidence of simultaneous diffusion of components through the interface between these chemically unequilibrated rocks, with the displacement of the boundary between them. In the vicinity of the gedrite-bearing gneiss, garnet and sillimanite of the aluminous metapelite are replaced (up to complete disappearance) by cordierite. The X-Mg of the rock and its minerals simultaneously increase. The diffusion coefficients of major oxides were evaluated as follows (cm(2)/s): TiO2 = 6.98 x 10(-15), Al2O3 = 1.45 x 10(-14), FeO = 9.70 x 10(-15), MgO = 3.27 x 10(-14). The thicknesses 2h (cm) of the zones of diffusion-controlled transfer of various components were estimated as follows: TiO2 = 6.6, FeO = 7.8, K2O = 8.5, Al2O3 = 9.5, Fe2O3 = 14.1, MgO = 14.3. The average calculated velocity of the interface is V = 4.2 x 10(-6) cm/year. The relative mobility of major oxides was determined as follows: MgO > Fe2O3 > Al2O3 > K2O > FeO > TiO2.
Ключевые слова:	mass transfer; granulite facies; gneiss; diffusion; Diffusion; Transfer zones; Relative mobility; Metapelites; Interface velocity; Gedrite; Effective diffusion coefficients; Titanium dioxide; Silicate minerals; metapelite; Magnesia; Iron oxides; Iron compounds; Interfaces (materials); High temperature operations; Aluminum; thicknesses of active mass-transfer zones; relative mobility of major components; interface velocity; gedrite-bearing gneiss; effective diffusion coefficients; aluminous metapelite; Rocks;
Издано:	2015
Физ. характеристика:	с.39-59