论文部分内容阅读
文中的川东,仅指四川长江北岸的万县地区,涉及万县、开县、云阳、奉节、巫溪和巫山等7个县市的管辖区,位于108°20′—110°00′E,30°49′—31°41′N。 本区的地质构造属川东褶皱带东部与大巴山断裙带南部。区内有多条北东东。北北东向隔挡式褶皱带1)。背斜一般由三叠系嘉陵江组灰岩,巴东组钙质泥岩、碎屑岩和须家河组砂岩构成;向斜主要由侏罗系沙溪庙组紫红色泥岩砂质泥岩与蓬莱镇组砂泥岩构
The text refers to the East Sichuan, Sichuan refers only to the northern coast of the Wanxian area, involving Wanxian, Kaixian, Yunyang, Fengjie, Wuxi and Wushan and other seven counties in the jurisdiction of 108 ° 20’-110 ° 00’E , 30 ° 49’-31 ° 41’N. The geological structure of this area belongs to the eastern part of the eastern Sichuan fold belt and the southern part of Daba Mountain. The area has a number of North Eastern. North-east barrier divide fold belt 1). The anticline is generally composed of the Triassic Jialingjiang limestone, the Badong Formation calcareous mudstone, the clastic rock and the Xujiahe Formation sandstone. The syncline is mainly composed of the Jurassic Shaximiao Formation purplish mudstone sandy mudstone and Penglai town Group of sand and mudstone structure