香格里拉晚三叠世哈工组沉积相分析  

The Analysis of Sedimentary Facies of Late Triassic Hagong Formation in Shangri-La

作　　者：李超民[1] 王国芝[1] 崔璀[2] 

机构地区：[1]成都理工大学地球科学学院,四川成都610059 [2]成都理工大学沉积地质研究院,四川成都610059

出　　处：《科技信息》2011年第29期I0382-I0382,I0215,共2页Science & Technology Information

基　　金：中国地质调查局区域地质调查项目支持;项目名称:云南1:5万阿热等四幅区域地质调查;项目编号:基[2010]增01-06-1

摘　　要：研究区地处泛华夏大陆晚古生代-中生代羌塘-三江构造区,位于青藏高原东南缘,横断山脉中段。香格里拉地区于晚古生代已形成碳酸盐台地和深水盆地并存的古地理格局,三叠纪中-晚期处于拉张构造背景。结合区域地质调查资料,依据相序特征和相变关系,识别出甭哥附近的哈工组地层晚三叠世时沉积环境是浅海陆棚,桑那水库附近的哈工组地层晚三叠世时沉积环境是半深海。Shangri-La is located in Late Paleozoic--Mesozoic Qiangtang-Sanjiang structure area of the Chinese mainland ,which is located in Southeastern margin of the Tibetan Plateau and Middle mountain range. Shangri-La region had formed co-existence of carbonate platform and deep basin of the ancient geography in the late Paleozoie,and Shangri-La was in the extensional tectonic setting from Middle Triassic to Late Triassic.With regional geological data, phase sequence characteristics and relationship between the phase transition,the sedimentary environment of Late Triassic Hagong formation is Shallow shelf in Bengge,but the sedimentary environment of Late Triassic Hagong formation is Bathyal in Sangna reservoir.

关 键 词：香格里拉 哈工组 浅海陆棚 半深海 

分 类 号：P534.51[天文地球—古生物学与地层学]