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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。
Starting from the petrology, petrochemistry and geochemical analysis methods, through the comprehensive analysis and study of the provenance of the Triassic sandstone in Nanpanjiang area and its sedimentary tectonic setting, combined with the recent studies on the geomorphic evolution of the margin of the Yangtze continental margin to make. If the author believes that the sedimentary tectonic setting of the Triassic Nanpanjiang area is not a backarc basin, it should be a passive continental margin environment.