New Research Progress and Potential Prediction of Lijiawan-Gaodi-Daotuo Graben Located in Songtao Area，Wuling Manganese Ore Belt in Nanhua Period，South China
A series of famous large to super large manganese deposits were formed in the Lijiawan-Gaodi-Daotuo Graben，Wuling Manganese Ore Belt，South ChinaThis study is based on the latest research implemented in 2020-2021 about the meticulous investigation(exploration)of the Gaodi Super Large Manganese Deposit in Songtao area，Guizhou Province，using the gas-liquid effusion-sedimentary metallogenic theory of manganese deposits and prospecting prediction technology system of concealed manganese deposits，the variations of manganese layer，ore thickness and ore grade，ore facies characteristics of manganese deposits are analyzed，which prove that the gas-liquid effusion-sedimentary center which spread along 70° NE is divided into central facies，transitional facies and marginal facies，and manganese-rich ores are distributed in the center faciesThe area of the central facies is 55 km2，and characterized by strong large-scale metallogenesisIt can be predicted that there are still 200 million tons left in the graben，and the total amount of manganese ores in the whole graben can reach 500 million tons，forming a world-class giant concealed manganese deposits
