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塔里木盆地西南缘可划分为喀喇昆仑、西昆仑、塔里木等三个地层区和康西瓦、库地等两个缝合带。自震旦纪以来,该区经历了震旦纪—泥盆纪和石炭纪—第四纪两大构造旋回。对应每一旋回,喀喇昆仑地层区和塔里木地层区发育有被动大陆边缘盆地和碰撞造山两种类型的岩石组合。西昆仑地层区发育了被动大陆边缘盆地、俯冲消减带和碰撞造山等三种类型的岩石组合。康西瓦缝合带是康西瓦洋经历了震旦纪—中泥盆世和早石炭世—晚侏罗世两次开合后的遗迹,它既是喀喇昆仑和西昆仑两个地层区的分界线,又是羌塘和塔里木两个板块的分界线;库地缝合带则是库地洋经历早石炭世—早二叠世一次开合的遗迹,分割了西昆仑和塔里木这两个地层区。
The southwestern margin of the Tarim Basin can be divided into three strata zones such as Karakorum, West Kunlun and Tarim, and two suture zones such as Kangxiwa and Qudu. Since the Sinian, the area experienced two cycles of Sinian - Devonian and Carboniferous - Quaternary tectonics. Corresponding to each cycle, the Karakoram stratum and Tarim stratum develop two types of rock assemblages: passive continental margin basin and collision orogeny. West Kunlun stratigraphic zone developed three types of rock assemblages: passive continental margin basin, subduction zone and collision orogeny. Kangxiwa suture is Kangxiwayang experienced Sinian - the Middle Devonian and Early Carboniferous - Late Jurassic twice after opening and closing of the ruins, it is both the Karakorum and West Kunlun two stratum The dividing line is also the dividing line between the two plates of Qiangtang and Tarim. The Kudi suture is a trace of the opening and closing of the Early Carboniferous-Early Permian in the Quddian Ocean, dividing the two formations, the West Kunlun and the Tarim Area.