【摘要】 从岩石学、岩石化学及地球化学分析方法入手，通过对南盘江地区三叠系砂岩的物源性质及其沉积构造背景的综合分析和研究，结合近年来对扬子大陆边缘地质构造演化的研究成。果，笔者认为三叠纪南盘江地区的沉积构造背景不属弧后盆地，而应是被动大陆边缘环境。更多还原

【Abstract】 In this paper, we analyse and study comprehensively on the nature of material origin of the Triassic sandstone in the Nanpan River area and its sedimentary geotectonic setting by means of petrographic, petrochemical and geochemical analyses. In connection with the study results in recent years on the geological geotectonic evolution of Yangzi Continent mar-gin, we believe that the Triassic sedimentary geotectonic setting of the Nanpan River area is an environment of passive continent margin but not a retroarc basin.更多还原