The Structure of the Wuling Rift Basin and Its Control on the Manganese Deposit during the Nanhua Period in Guizhou-Hunan-Chongqing Border Area,South China
Zhou Qi
Du Yuansheng
Yuan Liangjun
Zhang Sui
Yu Wenchao
Yang Shengtang
Liu Yu
Abstract：The "Datangpo type"manganese deposits in Guizhou-Hunan-Chongqing border area is an important manganese re-source base since its hundreds of million tons of sedimentary rhodochrosite accounts for about half of manganese resource of China.In this paper,based on the study about the formation system of Nanhua period and stratigraphic regionalization,we find under the background of Rodinia supercontinent breakup,the Nanhua rift basin (level Ⅰ)consisted of the Wuling and Xuefeng secondary rift basin and the Tianzhu-Huaihua uplift.Wuling secondary rift basin controlled and formed the manganese metallo-genic area in the Guizhou-Hunan-Chongqing border area,and its inside consisted of three level Ⅲ depression basins,one level Ⅲ uplift and sixteen level Ⅳ rift basins.The three level Ⅲ depression basins controlled Songtao-Guzhang,Yiping-Zhijiang and Xikou-Xiaochayuan secondary manganese metallogenic area.Among them,the Songtao-Guzhang depression basin (Level Ⅲ)is the rifting center of the Wuling secondary rift basin,where the manganese mineralization is strong,and the quantity of resource is huge,which has became a world-level manganese concentrated area.The Ⅳ rift basins controlled and formed the manganese deposits in the target area.It's suggested that the syn-sedimentary fault in Nanhua period is the premise of manganese deposit formation,fifteen syn-sedimentary faults,the controlled depression basins and the major manganese in the target area are dis-tinguished and recovered.The syn-sedimentary fault is not only the transporting tunnel of deep manganese material and ancient natural gas but also the link of inside system and surface system of ancient natural gas seepage sedimentary-type manganese metallogenic system.
Keywords：Nanhua periodrift basinmanganese depositSouth Chinaore deposit geology
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 177-188 )