【摘要】 本文综合利用岩心、薄片、测井及野外剖面等资料，分析该区岩石类型及组合特征，利用单因素作图法，对区域沉积环境进行分析研究。研究表明，马五5亚段沉积时期，灰坪微相在研究区广泛发育，云坪呈零星状分布，云灰坪沿云坪周围分布。马五3-4亚段沉积时期，膏云坪广泛发育，云坪主要发育在研究区北部，有少量云坪呈零星状分布。马五1-2亚段沉积时期，膏云坪分布更为广泛，云坪发育较少。总体而言，马五1-5亚段自下而上沉积水体逐渐变浅，沉积环境也由开阔变为局限。更多还原

【Abstract】 This paper comprehensively utilizes core, thin section, logging and field section data to analyze the rock types and assemblage characteristics in this area. By using the single-factor mapping method, the regional sedimentary environment is analyzed and studied. Research shows that during the sedimentary period of the 5 Submember of Ma5, the carbonate mud flat facies was widely developed in the research area, and the dolomite flat facies was distributed sporadically. And the dolomitic mud flat Facies was distributed along the periphery of the dolomite flat facies. During the sedimentary period of the 3-4 Submembers of Ma5, the evaporitic dolomite flat facies was widely developed. The dolomite flat facies mainly developed in the northern part of the research area, with a few distributed sporadically. During the sedimentary period of the 1-2 Submembers of Ma5, the distribution of evaporitic dolomite flat facies was more extensive and the development of dolomite flat facies was less. In general, the bottom-up sedimentary water body of the 1-5 Submembers of Ma5 gradually became shallower, and the sedimentary environment also changed from open to limited.更多还原