Petrogeochemical features of rocks of Kotursky massif (Kuznetsk Alatau)

The object of study - the rocks of the Yulinsk complex, as exemplified by the Kotursky massif, located on the southeastern slope of the Batenevsky ridge of Kuznetsk Alatau. The massif under study consists mainly of rocks of syenite-granosyenite magmatic formation. The relevance of the study is conditioned by new data on the composition of the Yulinsk complex with copper-molybdenum ore occurrences. The petrogeochemical characteristics of the rocks of the Kotursky massif was given mainly according to the original results of silicate and ICP-MS analyzes to elucidate the patterns of composition variation and to establish their evolutionary orientation. The established petrogeochemical features of the rocks of the Kotursky massif reflect their crystallization from differentiated magmatic melts, which are contaminated to varying degrees by the material of the earth's crust. The regularities of the distribution of petro- and microelements indicate that the rocks of the massif belong to the island-arc collision and, mainly, to intraplate granitoids. The rocks of the Kotursky massif are typical of the Yulinsk igneous complex of small intrusions.