【摘要】 夏里组沉积初期羌塘盆地发生大规模海退，海水由北向南退出，在此基础上，形成了北羌塘盆地以碎屑岩充填为主、南羌塘盆地以碳酸盐岩沉积为主的沉积特点．根据地面露头及分析化验资料，夏里组沉积相类型有滨海相、三角洲相、台地相及盆地相．滨海相有高能砂质类型海岸和低能泥质类型海岸两种类型，广泛发育于北羌塘盆地．三角洲相仅局限于盆地西部中央隆起带北侧．南羌塘盆地由北向南依次发育以碳酸盐岩沉积为主的局限台地、开阔台地、盆地相更多还原

【Abstract】 Large scale transgression and regression occurred during the period of Xiali group sedimentation in Qiangtang Basin, mainly filled with clastic rocks in the north and carbonate rocks in the south. According to the outcrops and the data analysis, the basin could be divided into four sedimentary facies, they are shore facies, delta fadies, platform facies and basin facies. The shore facies made of energy sand coast and low energy shale coast are well developed in the north. The delta facies only developed in the north of central uplift of South Qiangtang Basin. The open platform facies, limit platform facies and basin facies developed from north to south in South Qiangtang Basin.更多还原