Geologicheskii Vestnik

Based on materials on detailed mineralogy and isotope-geochemical characteristics of igneous rocks of the Shatak Complex, a detailed model of its formation is given. It is shown that the origin of the diversity of igneous rocks (picrites, basalt, rhyolite) satisfies the conditions of AFC (AssimilationFractional Crystallization) process that occurs as a fractionation of liquidus phases (olivine±clinopyroxene) and an accumulation of a fluid phase in the upper part of the chamber on one side and assimilation host rocks on the other

Shatak complex, Rb-Sr isotope system, Sm-Nd isotope system, picrites, basalts, rhyolites, the AFC-process, fractionation, assimilation

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