鄂拉山北段早二叠世地层研究新进展

New advance in the study of Early Permian strata in the Northern Sector of the Ela Mountain

以现代地层学的理论为指导，将鄂拉山北段早二叠世地层新建切吉组，划分为三个段级地层单位，即：下段、中段和上段。将该套地层所含科化石作了进一步研究。

A new Early Permian lithostratigraphic unit—Qieji Formation is established in the Northern Sector of the Ela Mountain and divided into three parts,namely,the upper,middle and lower members.On the basis of systematic study of fusulinid fossils from these strata,the Neoschwagerina and Yabeina Zones were established.