THE FIRST JOINT FIND OF CONIACIAN-SANTONIAN RADIOLARIANS AND PLANKTONIC FORAMINIFERS IN WESTERN KAMCHATKA

Abstract

Radiolarians and inoceramids in Santonian–early Campanian neritic facies of northwestern Kamchatka were known long ago. The radiolarian assemblage, which includes 25 species, originates from carbonate concretions in the siliciclastic rocks (siltstones and sandstones) of the lower subformation of the Bystraya Formation (Talovka Group) developed in the lower reaches of the eponymous river. This assemblage is represented by species known only from the Russian Platform and California in a 2 : 1 proportion.