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滇中内陆断陷湖盆位于杨子准地台西缘的康滇地轴南段,从印支运动陷落至中生代末四川运动褶皱回返。沉积物以陆相红色建造为主体,总厚度达万米以上。第三系仅在山间小盆地中有零星的湖沼相褐煤沉积(图1)。
The inland fault depression lake in central Yunnan is located in the southern part of the Kangdi-Dian axis in the western margin of the Yangzi quasi platform, from the Indosinian movement to the folding back of the Meso-Sichuan movement in the Mesozoic. Sediment built in continental red as the main body, the total thickness of more than 10,000 meters. The Tertiary only had sporadic lacustrine facies lignite deposits in the mountainous small basins (Figure 1).