摘要
西昆仑麻扎地区侏罗系莎里塔什组是新疆重要的含煤岩系之一。本文对莎里塔什组的岩相特征、地层接触关系和沉积环境进行研究,综合粒度及沉积相分析,认为莎里塔什组的沉积相可分为扇三角洲相、河流-湖泊相、辫状河三角洲相三种类型,经历了"裂陷—稳定—封闭"的演化过程。本次新发现的几处较大规模的沥青脉,预示着西昆仑麻扎地区侏罗系叶尔羌群莎里塔什组沉积建造可能有良好的寻找煤及油气藏的前景。
The Jurassic Shalitashi Formation is one of the most important coal-bearing formations in Mazar area, western Kunlun, Xinjiang. Based on analyzing the characteristics of lithofacies, stratigraphic contact rela- tionship,depositional environment, grain-size and sedimentary facies, this paper considers that the sedi- mentary facies of Shalitashi Formation can be divided into fan delta facies, river-lake facies and braided riv- er delta facies, experienced the evolution of ＂chasmic stage-stable stage-closed stage＂. The new discovery of several large-scale asphalt veins indicates that the sedimentary Shalitashi Formation of Ye ＇ erqiang Group may have a good prospect for prospecting of coal and oil-gas reservoirs.
出处
《资源调查与环境》
2013年第1期22-28,共7页
Resources Survey & Environment
基金
中国地质调查局1:5万麻扎幅区域地质调查项目(编号:1212077720539)
关键词
西昆仑
莎里塔什组
沉积环境
粒度分析
western kunlun
shalitashi formation
depositional environment
grain-size analysis
