POSTMINERAL ALKALIC MAFIC ROCKS OF THE TIGRINOYE DEPOSIT

Abstract

Ore deposits in the Soviet Maritime region and other regions with a mature continental crust usually are confined to points of prolonged endogene activity. Igneous activity at such nodes is heterogeneous, and relative to the regional background is characterized by maximum range of age and composition of the resulting rocks and the accumulation of magmatic products formed at very high temperatures and very rich in volatiles and mineralizers. This paper describes an example in the Armu-Bol'she Ussuri ore district, Maritime territory, of postmineral endogene regeneration that created a combination of igneous rocks in the central part of the Tigrinoye deposit, differing in age and emplacement depth.