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刘房子膨润土、煤矿位于松辽沉降带东缘,燕山期断陷盆地中。钠基膨润土和煤紧密伴生,均产于侏罗系上统沙河子组(表1),上覆白垩系。沉积盆地构造简单,无后期岩浆活动,地层保存完好。从野外观察可知,该成煤盆地初期山势陡峻,风化剥蚀强烈,物质来源充足,形成一套快速堆积的砾岩。进入平静期后,形成湖泊到沼泽相,有多层的煤和膨润土沉积。矿区共有膨润土矿七层、耐火粘土一层、煤16—17层,其中膨
Liu house bentonite, coal mine is located in the eastern edge of Songliao sedimentary belt, Yanshanian faulted basin. Sodium bentonite is closely associated with coal and occurs in the Upper Jurassic Shahezi Formation (Table 1) overlying the Cretaceous. The sedimentary basin has a simple structure and no post-magmatic activity, and the strata are well preserved. From the field observation, it can be known that the steep mountainous area at the beginning of the coal-forming basin was strongly weathered and denuded with sufficient material sources to form a rapidly accumulating conglomerate. Into the quiet period, the formation of the lake to the swamp phase, there are multiple layers of coal and bentonite deposition. A total of seven mine bentonite mine, refractory clay layer, 16-17 layers of coal, of which swelling