青藏高原东部囊谦第三纪盆地沉积构造特征  

Sediments and Structural Features of Nangqian Tertiary Basin in Eastern of Tibet-Qingzang Plateau

作　　者：王世锋[1] 伊海生[2] 王成善[2] 

机构地区：[1]北京大学地质学系,北京100871 [2]成都理工学院沉积所,成都610059

出　　处：《北京大学学报（自然科学版）》2002年第1期109-114,共6页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：原地矿部九五重大基础研究资助项目 (940 10 11)

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。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.

关 键 词：囊谦盆地 岩相 沉积体系 古流向 青藏高原 第三纪 沉积构造 扎曲断裂 

分 类 号：P588.2[天文地球—岩石学]