The Induan Stage in the eastern upper-Yana region

A detailed zonation of the Induan Stage of northeastern Asia was performed in sections in the eastern upper-Yana region. It has revealed a decrease in the volume of the Triassic Stage In the northward direction resulting from the omission of basal beds. It is concluded that the boreal standard of th e Permian-Triassic boundary should be sought primarily in the south of the eastern upper-Yana region within the basin of the East Khandyga River.