East Sikhote-Alin volcanic-plutonic belt 

(Late Cretaceous and early Tertiary) 

(Eastern part of Russian Southeast, units Kvi, Kpf)

Consists chiefly of five major units from oldest to youngest: (1) Early Cenomanian rhyolite and dacite at 
base; (2) Cenomanian basalt and andesite; (3) thick Turonian to Santonian ignimbrite sequences; (4) 
Maastrichtian basalt and andesite; and (5) Maastrichtian to Danian rhyolite. Paleogene to Miocene high-
titanium calc-alkalic basalt and andesite also are present in the belt. Contains coeval, mainly intermediate-
composition granitic plutons. For paleomagnetic determinations, two localities from the Primorye region 
yield grade C results for volcanic and volcanogenic rocks of Upper Cretaceous age, indicating southerly 
displacements with respect to the Siberian platform of 14o+10o and 9o+11o. The East-Sikhote-Alin belt is 
equivalent to Okhotsk-Chukotka volcanic-plutonic belt (unit oc) on strike to the north in Russian 
Northeast. Overlain by Miocene to Quaternary high-titanium tholeiitic and alkalic basalt (units sp). 
REFERENCE: Nevolina and Sokarev, 1986; Nazarenko and Bazhanov, 1987.