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通过野外剖面观测及钻井岩心的详细观察,在岩石颜色、沉积构造、剖面结构、测井相等沉积相识别标志研究的基础上,将川南麻柳场—大塔场须家河组划分为辫状河三角洲和湖泊2个沉积相,进一步在三角洲中识别出辫状河三角洲平原及辫状河三角洲前缘亚相,湖泊进一步划分为滨湖和浅湖亚相,并对各微相特征进行了详细研究。这些研究成果的取得,可以更详尽地了解川南须家河时期的沉积环境,为川南地区须家河组的油气勘探提供基础地质资料。
Based on the field profile observation and detailed observation of drilling cores, based on the study of rock color, sedimentary structure, section structure and logging identification sign of sedimentary facies, the Xujiahe Formation of Maoliuchang-Datuchang in southern Sichuan is divided into braided river Delta and lacustrine sedimentary facies. The braided river delta plain and the braided river delta front subfacies are further identified in the delta. The lakes are further divided into lake and shallow lake subfacies, and the characteristics of each microfacies are detailed the study. The achievement of these research results can get a more detailed understanding of the depositional environment of the Xujiahe Period in the southern Sichuan Basin and provide basic geological data for the exploration of the Xujiahe Formation in the southern Sichuan area.