黑龙江嘉荫-逊克地区的中、新生代地层广泛分布,尤其是晚白垩世地层沿黑龙江南岸出露较好,化石丰富,产有巨型鸭嘴龙等,是研究我国北方白垩纪地层古生物的理想地区之一。 根据岩性和古生物组合特征,本区晚中生代和第三纪地层自上而下划分如下: The Mesozoic and Cenozoic strata in Jiayin-Xunke area of ​​Heilongjiang are widely distributed. Especially, the Late Cretaceous strata exposed well along the south bank of Heilongjiang Province, with rich fossils and giant duck-billed dinosaurs, are the study of the paleontology in the Cretaceous strata in the north of China One of the ideal areas. According to the characteristics of lithology and palaeontology, the Late Mesozoic and Tertiary strata in this area are divided as follows from top to bottom: