Abstract
966 Argillaceous schists and their metamorphic prod� ucts are indicators of the continental crust composi� tion with respect to the behavior of some minor ele� ments, and their geochemical chronicling allows us to follow its evolution [1]. Pelitic rocks of specific iron– aluminous composition make up a significant portion in the structure of Precambrian metamorphic com� plexes in the folded frame of the southwestern margin of the Siberian craton; their metamorphism resulted in the formation of exotic mineral parageneses with extremely ferruginous minerals [2, 3]. Geochemical specifics of these rocks especially with respect to minor elements indicative for revealing geodynamic peculiarities of the protolith formation have been studied insufficiently, which causes controversial con� cepts on the peculiarities of their origin. According to the literature data, such a specific composition of rocks is interpreted as a result of the lateritic character of weathering processes [4], which is discordant with
Published Version
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