Abstract: Nangqian basin locates at the eastern Tibet-Qingzang plateau, which is in low study level at present because of its grim environment. The authors describe in details about its features such as topography, petrologic features, deposition system, palaeo-flow direction etc. Moreover, authors point out the basin developed in strike-apart tectonic environment,and the sediment is close to provenance and quickly accumulated. All evidence disclose the development of the basin and the activity of Zhaqu Fault which controls the basin development.

Key words: basin, petrology, deposition system, palaeocurrent, Nangqian

摘要： 在野外工作的基础上全面叙述了青藏高原东部囊谦盆地的构造环境，地貌特征，地层的岩相、沉积体系、古流向等特征及盆地火山岩出露状况。指出盆地形成于走滑拉张环境，盆地沉积环境为近源、快速堆积，沉积体系不对称分布且相变迅速，物源区单一性，古流向的变化表明了盆地的不断加大及控制盆地的扎曲断裂的持续活动性。

关键词: 岩相, 沉积体系, 古流向, 囊谦, 盆地