Kuibiveem sedimentary assemblage 

(Cretaceous) 

(Eastern Russian Northeast, unit Ks)

Consists chiefly of folded marine sedimentary rocks (including turbidite deposits) with Albian to Late 
Cretaceous macrofossils. Early part of Albian and Turonian units (Kuibiveemskaya and Perekatninskaya 
Formations) composed of sandstone, siltstone, and conglomerate. Locally faulted and tectonically 
imbricated. Santonian and Campanian sequence unconformably overlies Albian and Turonian sequence 
and consists of sandstone, siltstone, argillite, conglomerate, and rare chert and andesite tuff. Thickness 
greater than 2,000 m. REFERENCES: Aleksandrov, 1978; Zinkevich, 1981; Sokolov, 1990, 1992.