Sedimentary palaeogeography and its mineralization significance of the Early Permian bauxite in Wuchuan-Zheng′an-Daozhen area,northern Guizhou Province
Cui Tao1,2, Jiao Yangquan2, Du Yuansheng3, Wang Xiaomei2, Lei Zhiyuan4, Weng Shenfu4, Jin Zhongguo5
1 College of Resource and Environmental Engineering, Guizhou Institute of Technology, Guiyang 550003, Guizhou 2 Faculty of Earth Resource,China University of Geosciences(Wuhan),Wuhan 430074,Hubei 3 State Key Laboratory of Biogeology and Environment Geology,China University of Geosciences(Wuhan),Wuhan 430074,Hubei 4 Bureau of Geology and Mineral Exploration and Development of Guizhou Province, Guiyang 550004,Guizhou 5 Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou Province,Guiyang 550005,Guizhou
Abstract：Based on field geology,hand specimens,distribution characteristics of underlying strata,and thickness of orebody and ore beds,we conducted a comprehensive analysis on the palaeogeography and its relationship with the mineralization process of bauxite in Wuchuan-Zheng′an-Daozhen area, northern Guizhou Province. The results showed that:(1)The sedimentary basin of bauxite is bounded by Wulong area on the north, by Nanchuan area on the northwest, by Yanhe area on the east,and by Suiyang-Fenggang area on the south; (2)The south part of the basin had a higher ancient landform than the north,and the sedimentary environment of bauxite was composed by partly closed bay and shoreland glade,and the good-quality bauxite was almost in the shoreland glade;(3)Sedimentary palaeogeography controlled the thickness of ore beds but not directly controlled the forming of high-grade bauxite.Sedimentary palaeogeography indirectly controlled the forming of high-grade bauxite by controlling sedimentary environment of bauxite when other factors were beneficial.
Cui Tao,Jiao Yangquan,Du Yuansheng et al. Sedimentary palaeogeography and its mineralization significance of the Early Permian bauxite in Wuchuan-Zheng′an-Daozhen area,northern Guizhou Province[J]. JOPC, 2014, 16(1): 9-18.
