北羌塘盆地托纳木地区早白垩世雪山组沉积相分析及油气意义  

The Xueshan Formation of Early Cretaceous in Tonam Srea,Northern Qiangtang Basin,Sedimentary Facies Analysis and It's Hydrocarbon Significance

作　　者：白培荣 马德胜 熊兴国 吴滔 符宏斌 

机构地区：[1]贵州省地质调查院,贵州贵阳550005

出　　处：《贵州地质》2014年第4期307-313,共7页Guizhou Geology

基　　金：青藏高原重点盆地油气资源战略调查与选区(科油[2009]01号)

摘　　要：位于青藏高原腹地的羌塘盆地,是中生代海相沉积盆地,同属于特提斯构造域,其中生代巨厚的海相沉积地层和所处的大地构造背景,是油气生成和聚集的较好区域。近年来在羌塘盆地多处发现的油苗和沥青点就是最好的佐证。早白垩世海陆过渡相地层雪山组代表了羌塘盆地海相环境的结束,笔者在羌塘双湖托纳木地区实测了雪山组地层剖面,并在雪山组地层中发现大量硅化木和炭质泥岩层,对分析早白垩世时期的沉积环境提供了较好的依据。雪山组地层在羌塘盆地的展布范围及沉积环境,对指导油气勘探工作具有重要的指示意义。The Qiangtang basin is located in the hinterland of the Qinghai-Tibet Plateau, which is a Mesozoic marine sedimentary basin and belong to the same Tethyan tectonic domain. The hugely marine sedimentary strata of Cenozoic and it＇ s tectonic background formed a good area for hydrocarbon generation and accumula- tion. In recent years, the oil seepage and pitch points were found in the Qiangtang basin is the best evidence. The marine-continental transition facies of Xueshan formation represents the end of marine environment of the Qiangtang Basin.The author measured the stratigraphic section of Xueshan formation inTonam area of Shuanghu, Qiangtang, and found a large number of petrified wood and carbonaceous mudstone layer, provides good evidence for analysis the sedimentary environment of the early Cretaceous period. The distribution range and sedimentary environment of Xueshan formation in theQiangtang basin, has important indicating significance for guiding the exploration of hydrocarbon.

关 键 词：青藏油气 托纳木 雪山组 沉积相 

分 类 号：P534.53[天文地球—古生物学与地层学] P512.2[天文地球—地质学]