古地理学报2016，Vol.18Issue(2)：207-219,13.DOI:10.7605/gdlxb.2016.02.016
塔里木盆地巴楚地区上奥陶统碳酸盐岩岩石学特征及沉积环境
Carbonate petrological characteristics and sedimentary environment of the Upper Ordovician in Bachu area,Tarim Basin
牛君 1黄文辉 2王鑫3
作者信息
- 1. 中国地质大学 北京 能源学院，北京 100083
- 2. 中国地质大学 北京 海相储层演化与油气富集机理教育部重点实验室，北京 100083
- 3. 中国地质大学 北京 页岩气勘察与评价国土资源部重点实验室，北京 100083
- 折叠
摘要
Abstract
Combined with the profile measurements in the field and the indoor thin section identifica-tion,this paper conducts rock components,petrological types and sedimentary environment analysis of carbonate rocks of the Upper Ordovician Tumuxiuke Formation and Lianglitage Formation in Bachu area of Tarim Basin.The results show that the two stratigraphic units have difference in fossil assemblages,granu-lar components and matrix types and texture.The petrological type of Tumuxiuke Formation is only micritic-bioclastic limestone composed of Ostracodas and Trilobites,while twelve types in Lianglitage Formation are recognized such as pelletoid-algal limestone,intraspararenite,sparry sand-sized intraclast limestone,al-gal limestone,micritic limestone with bilclasts and pelletoidal limestone.According to the analysis of pet-rological types and outcrop observing,the Tumuxiuke Formation carbonate rocks were mainly formed in reef-front slope,while the Lianglitage Formation carbonate rocks were formed in open platform and organic reefs,implying a relatively shallow sedimentary environment.Organic reef facies of platform margin were developed between No.Ⅰ section and No.Ⅱ section,with three algal reefs arranged in turn from south to north.关键词
塔里木盆地/巴楚地区/吐木休克组/良里塔格组/碳酸盐岩/岩石类型/沉积环境Key words
Tarim Basin/Bachu area/Tumuxiuke Formation/Lianglitage Formation/carbonate rock/petrological type/sedimentary environment分类
能源科技引用本文复制引用
牛君,黄文辉,王鑫..塔里木盆地巴楚地区上奥陶统碳酸盐岩岩石学特征及沉积环境[J].古地理学报,2016,18(2):207-219,13.
