桃江式锰矿成矿期岩相古地理及成矿预测  

LITHOFACIES PALAEOGRAPHY AND METALLOGENIC PREDICTION DURING METALLOGENIC EPOCH OF TAOJIANG-TYPE MANGANESE DEPOSIT

作　　者：祝寿泉[1] 

机构地区：[1]中南冶金地质研究所

出　　处：《地质与勘探》1996年第5期21-26,共6页Geology and Exploration

摘　　要：桃江式锰矿是优质锰矿。矿层产于中奥陶统磨刀溪组，矿体受海底扇控制。根据同层矿体沉积环境、钙屑浊积岩相、沉积层序和沉积构造，海底扇划分为内扇、中扇和外扇３个亚相。中扇是碳酸锰矿有利赋存部位。据此，进行了成矿预测，取得了较好的找矿效果。Manganese ores of Taojiang-type manganese deposit contained less useless material and were easily utilized. Ore layer was hosted by the Muodaoxi Formation of the middle Ordovician series,and ore hodies were controlled by submarine fan. According to the sedimentary environment of ore bodies in the same ore layer,calcareous fragmental turbidite facies,sedimentary sequence and sedimentary structure,submarine fan was divided into the following three subfacies: inner fan, middle fan, outer fan. Middle fan was favorable occurrence in enriching manganese carbonate deposit. Based on these study, metallogenic prediction was carried into effect and better result of ore-prospecting was obtained.

关 键 词：锰矿床 成矿期 岩相古地理 成矿预测 

分 类 号：P618.320.2[天文地球—矿床学] P618.320.8[天文地球—地质学]