上扬子东南缘民乐-古丈地区锰矿地质特征及找矿方向

湖南省民乐-古丈地区锰矿位于上扬子地块东南缘之武陵台陷的半局限浅海盆地中，为典型的海相沉积型锰矿床。区内主要有民乐和古丈2个锰矿产地，位于松桃成锰盆地的中东部，与贵州道坨锰矿、杨立掌锰矿处于同一断陷槽中，成矿地质条件较好，找矿潜力较大。通过对区内锰矿床（点）成矿地质特征、古构造、岩相古地理等综合分析，总结区域锰矿成矿规律和找矿方向，为上扬子地块东南缘南华系锰矿找矿突破提供依据。

Geological characteristics and prospecting direction of manganese deposits in the Minle-Guzhang area at the southeast margin of the upper Yangtze Block

Manganese deposits in the Minle-Guzhang area of Hunan Province are located in the semi-limited shallow sea basin of the Wuling depression at the southeast margin of the upper Yangtze Block, which belong to typical marine sedimentary deposits. In this area, there are two main manganese ore producing areas, i.e., Minle and Guzhang, which are located in the central and eastern part of the Songtao Mn basin. They are both in the same fault trap as the Daotuo manganese mine and Yanglizhang manganese mine in Guizhou Province, with good metallogenic geological conditionsand a large prospecting potential. This work comprehensively analyzed the metallogenic geological features, palaeostructures, and petrophysical paleogeography of manganese deposits (points) in the region, and summarized the metallogenic law and prospecting direction of regional manganese deposits in order to provide basis for prospecting breakthrough of manganese deposits at the southeast margin of the upper Yangtze Block.