单因素分析多因素综合作图法—塔里木盆地上奥陶统良里塔格组沉积相研究

通过借鉴冯增昭的单因素分析多因素作图法,选取岩芯、薄片资料和录井资料中的岩石百分含量作为单因素;并结合地震相、录井资料以及前人研究成果,对塔里木盆地上奥陶统良里塔格组沉积相进行了研究。针对单因素及其他定性、定量资料在沉积相研究过程中的可靠程度不同,对其进行优先级划分。根据划分的等级,将所有资料得出的沉积相认识加以叠加,从而编制出了塔里木盆地上奥陶统良里塔格组沉积相图。研究显示良里塔格组发育开阔台地、台地边缘、斜坡、陆棚、盆地5种沉积相,进而探讨了与前人研究成果的区别以及产生这些区别的原因。

Single factor analysis and multi-factor graphic method-the research of sedimentary facies of upper Ordovician ofLianglitage Formation in the Tarim Basin

Through the reference of Feng Zengzhao"s single factor analysis and multi-factor graphic method, selecting the percentage of rock in the core, thin section and logging data as the single factor, associating with the seismic facies , logging data and previous researches, the reseach is focused on the Lianglitage Formation in upper Ordovician in the Tarim Basin. According to the different reliable degree of the single factor and other qualitative, quantitative data in the sedimentary facies research process, the data has been divided by priority. According to the priority, the author gets all the understanding of the sedimentary facies in all data superposition to compile the figure of sedimentary facies in the Lianglige Formation of upper Ordovician in the Tarim Basin .The research suggests that the Lianglitage Formation is the development of 5 sedimentary facies which are open platform ,platform margin, slope, shelf and basin, then discusses the differences with the previous researches and the reasons.