On the subdivision of andesitic porphyritic strata at the Kanarskoye iron ore deposit

Abstract

Many iron ore and polymetallic deposits are located among volcanic strata, at first glance of completely homogeneous porphyrite composition. When making geological sections of such deposits it is necessary to subdivide these homogeneous volcanic strata and to distinguish among them reliable marker layers. The success of the correct interpretation of the structure of the ore field or its individual sections depends to a large extent on how correctly the sequence of formation of various volcanic layers consisting of porphyrite sheets or flows is interpreted.

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