天柱重晶石矿床位于扬子地块南缘、湘黔桂陆缘断陷盆地中。属于宜昌-都匀大断裂带的南沿部分,该断裂正好是新元古代-寒武纪两个古构造单元的分界线,也正好处在台地相与深水盆地相的过渡斜坡带上。该断裂属于新元古代-早古生代同生深大断裂,东盘沉降,西盘断续上升[1]。沿该深大 Tianzhu barite deposit is located in the southern margin of the Yangtze block, Hunan, Guizhou and Guangxi continental rift basin. It belonged to the southern margin of the Yichang-Duyun large fault zone. The fault happened to be the dividing line between two Neoproterozoic-Cambrian paleo-tectonic units, and was also located on the transitional slope between the platform facies and the deep-water basin. The fault belonged to the Neoproterozoic-Early Paleozoic deep and deep faults, and the east plate settled and the west plate intermittently increased [1]. Along the deep