再论贵州省大地构造特征

Further discussion on the geotectonic characteristics of Guizhou province,China

贵州省大地构造由上扬子陆块西南缘与江南复合造山带组成,经历了四期构造旋回。武陵构造旋回形成上扬子陆块与江南复合造山带分界的普安-贵阳-梵净山断裂,产生了黔东北-黔南-黔西南的武陵造山带;雪峰-加里东旋回形成了台地-斜坡-盆地格局,产生了黔东南的加里东造山带;海西-印支-燕山旋回从晚古生代陆内裂陷转化为中生代的前陆盆地;喜山期及新构造旋回进入了板内隆升阶段,发育了山间盆地;多期构造旋回控制了沉积型、喷流沉积型及沉积改造等矿床为主的中低温成矿系统。在黔西南-黔西地区的紫云-垭都深断裂,深切了软流圈并引发了"加厚旋涌"效应,这引起了强烈岩浆活动和大规模成矿物质上涌,在有利成矿环境中与碎屑岩-碳酸盐岩建造中完成各种成矿作用,使黔西南-黔西地区成为贵州重要矿产资源集中区。

The geotectonics of Guizhou province is composed of the southwestern margin of the upper Yangtze block and the Jiangnan composite orogenic belts,which has undergone four geotectonic cycles.The Wuling geotectonic cycle formed the Puan-Guiyang-Fanjingshan fault,which separated the upper Yangtze block and Jiangnan composite orogenic belt,and gave birth to the Wuling orogenic belt in the northeast of Guizhou,the southeast of Guizhou and the southwest of Guizhou.The Xuefeng-caledonian cycle formed the platform-slope-basin pattern and formed the caledonianorogenic belt in the southeast of Guizhou.The hercynian-indosinian-Yanshan cycle was transformed into the foreland basin of Mesozoic from the intracontinental rift of thelate Paleozoic.The Himalayanneotectonic cycle entered the intraplate uplift stage and developed the intermontane basins.The multi-period tectonic cycle controlledthe medium-low temperature metallogenic system,dominated by sedimentary deposit,exhalative sedimentary deposit and Sediment-reformed deposit.The Ziyun-Yadu fault in the southwest and western of Guizhou Province deepened into the asthenosphere and caused the"crust-thicken and mantle-whirl-upwell"effect,which caused strong magmatism and large-scale metallogenic materials upwelling,and completed various mineralizations in favorable ore-forming environments and clastic-carbonate rock formation,renderingthe southwest of Guizhou-the western of Guizhou being important mineral resources concentration area of Guizhou.