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汝箕沟盆地上二叠统石千峰组沉积环境分析
Sedimentary environment of Shiqianfeng formation of the upper Permian in Rujigou basin.
【摘要】 汝箕沟盆地上二叠统石千峰组具有三套岩性组合。在古气候及构造运动的共同影响下,形成了河流、三角洲和湖泊沉积体系。其中,河流相中发育堤泛亚相和河道亚相,在三角洲相中仅发育三角洲前缘亚相,湖泊相中以浅湖亚相为特征。利用微量元素对沉积环境进行了分析,表明该套沉积是在淡水环境中形成的;应用电化学法测得该套地层是在氧化环境条件下形成的。
【Abstract】 There are three sets of lithology assemblage in Shiqian-feng formation of the Upper Permian in Rujigou basin. By the common influence of paleoclimate and tectonic movement, the sedimentary systems of fluvial, delta and lake were formed. The overbank and fluvial channel sub-facies in the fluvial facies were developed. Only delta front sub-facies was developed in the delta facies. Lake facies was characterized by shallow lake sub facies. The sedimentary environment was analyzed by trace element. It shows that this set of sediment forms in the environment of fresh water. The set of formation forms in oxidizing environment condition by the analysis of electrochemistry method.
【Key words】 Shiqianfeng formation; sedimentary environment; fluvial facies; lake facies; delta facies; Ruji-gou basin;
- 【文献出处】 油气地质与采收率 ,Oil & Gas Recovery Technology , 编辑部邮箱 ,2004年06期
- 【分类号】P531
- 【被引频次】8
- 【下载频次】177