论文部分内容阅读
在印支运动作用下形成的四川聚煤盆地,是一个四周具有明确边界的大型同沉积盆地。从晚三叠世经侏罗纪,至白垩纪的漫长岁月,沉积范围大体一致。控制聚煤盆地西北边界的江油-灌县断裂,活动性较强,致使龙门山隆起区强烈上升,是聚煤盆地丰富的碎屑物供给源;盆地内部以华云山断裂和龙泉山断裂为界,将盆地划分成三个二级构造单元:即西部坳褶带、川中宽缓褶带和川东褶带。早中生代四川聚煤盆地自晚三叠世开始,共经历
The Sichuan coal-formed basin formed under the Indosinian movement is a large-scale sedimentary basin with definite boundaries all around. From the Late Triassic to the Cretaceous through the Jurassic, the sedimentary range is roughly the same. Controlling the Jiangyou-Guanxian fault at the northwestern boundary of the coal accumulation basin, the activity is strong, resulting in the strong rise of the Longmenshan uplift and abundant detritus supply in the coal accumulation basins. The Huayunshan fault and Longquanshan fault in the basin are The basin is divided into three second-level tectonic units: the western fold fold, the central Sichuan-Sichuan fold and the eastern Sichuan fold. Early Mesozoic Sichuan coal basin began in Late Triassic experience