The Litho/Sedimentary Facies Analysis of Lagar Formation, Xainza Area, Tibet
详细信息
- 责任者：Zhang Yujie (Chengdu Center ; China Geological Survey ; Chengdu 610081 ; China) ; Zhang Yichun
- 刊名：Acta Sedimentologica Sinica
- 出版年：2013
- 卷期：31(2)
- 关键词：早二叠世 ; Lower Permian ; 沉积相 ; sedimentary facies ; 西藏 ; Tibet
- 页码：p.269-281
- 图表：illus., 46 refs.
- 分类号：1200
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
In this paper,the litho/sedimentary facies of the Lagar Formation were analyzed based on the Zhakang-Mujiucuo section in Xainza County, central Tibet. According to present literature and depositional models,Early Permian sedimentary facies belts of Indian Gondwana to Tethyan Himalaya show continental tillites-glaciofluvial-proximal glaciomarine-distal ice-rafted debris successively from south to north.And it is said that Lhasa and South Qiangtang block also has been considered distal or super-distal glaciomarine environment. Global climate became warm with Sakmarian’ deglaciation.But at the same time,Lhasa block has been in tectonic activities similar to adjacent Tengchong block and Sibumasu block where rifting from north margin of Austria.
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