漠河盆地额木尔河群岩石地层划分与对比

开展了漠河盆地额木尔河群的岩石地层学研究，并将其所包括的绣峰组、二十二站组、漠河组和开库康组进行了段的划分。其中，绣峰组被划分为3个段、二十二站组被划分为2个段、漠河组划分为3个段，开库康组划分为2个段，开展了盆地内部岩石地层的对比，且对比效果较好。在此基础上，对额木尔河群的地质时代进行了分析，根据额木尔河群中的古植物和孢粉化石组合及其对比特征，认为额木尔河群应属于中侏罗世。研究不仅解决了额木尔河群在漠河盆地内对比的问题，更重要的是解决了目前漠河盆地天然气水合物勘探的基础地质问题，同时为将来在研究区进行油气以及其他沉积矿产等勘探与评价奠定了基础。

Lithostratigraphic division and correlation of the Emuerhe Group in Mohe Basin

This paper carried out the first study of the lithostratigraphy of the Emuerhe Group in the Mohe Basin and divided the members of the Xiufeng Formation，the Ershierzhan Formation，the Mohe Formation and the Kaikukang Formation.Among them，Xiufeng Formation was divided into three members，Ershierzhan Formation was divided into two members，Mohe Formation was divided into three members，and Kaikukang Formation was divided into two members.On the basis of this，the correlation of lithostratigraphy within the basin was carried out and good results were achieved.On this basis，the geological age of the Emuerhe group was discussed in this paper.According to the assemblages of paleoflora and sporopollen assemblages and their correlated features in the Emuerhe Group，it was concluded that the Emuerhe group belongs to the Middle Jurassic.This study not only solves the correlating problem of the Emuerhe group in the Mohe Basin，but more importantly solves the basic geological problems of the natural gas hydrate exploration in the Mohe Basin，at the same time，it will lay the foundation for future exploration and evaluation of oil and gas and other sedimentary minerals in the study area.