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在西藏北部双湖江爱达日那地区新发现一套出露较完整的三叠纪地层体,从多重地层的角度阐述了三叠系各组级岩石地层单位的基本特征。通过剖面测制,获取了丰富的三叠系地层、沉积相和古生物化石资料,尤其是下三叠统硬水泉组生物扰动灰岩、鲕粒灰岩、豆粒灰岩和中三叠统康南组含菊石灰岩的发现,为羌塘盆地三叠系地层、沉积相划分与对比,生物古地理研究和沉积盆地分析提供了重要的基础性资料。根据岩石类型和生物组合等特征,将上三叠统土门格拉群含煤系地层划分为3个组级岩石地层单位:红水沟组、石门关组和江爱达日那组。
A more complete Triassic stratigraphic body was discovered in the Idaho area of Shuanghu River in the northern part of Tibet. The basic characteristics of each lithostratigraphic unit in the Triassic strata were expounded from the perspective of multiple strata. Through the profiling, a large number of Triassic strata, sedimentary facies and paleontology fossils have been obtained, especially the bioturbation limestone, oolite limestone, legume limestone and Middle Triassic Kangnan The discovery of krysolite limestone contains important basic information for the Triassic strata in the Qiangtang Basin, the division and contrast of sedimentary facies, the study of paleobolographic studies and the analysis of sedimentary basins. Based on the characteristics of rock types and biological assemblages, the Triassic Tumen Gela Group coal measure strata are divided into three groups of lithostratigraphic units: the Hongshugou Formation, the Shimenimen Formation and the Jianglidamenta Formation.