关于黔东南金矿几个问题的思考

Some Considerations about the Gold Deposits in Southeast Guizhou

针对黔东南金矿找矿难度越来越大的现状,根据野外实际情况,分析有关研究成果,对黔东南金矿成矿地质背景、金矿床类型、金矿的垂向序列及找矿前景进行初浅讨论,认为黔东南与湘西在地幔结构和地壳类型及深部构造特征等地质背景存在较大差异,黔东南(加里东期)金矿在地层垂向序列上具有向上成矿温度降低的特征,并据此推测应曾存在类卡林型金矿,认为褶皱和区域性断裂构造应具有良好的找矿前景。

Since the difficulty of gold deposit exploration and according to the document and research, the metallogenetic geologic background, mineralizing process and the distributing rule of the gold deposits in southeast Guizhou were discussed, it＇ s thought that the mental structure, earth crust type, deep tectonic activity and other deep geologic background in southeast Guizhou and west Hunan had big differences, so caused the differences in mineralization and scale. On the basis of the discussion of the metallogenetic characters in the stratum vertical succession of gold deposits in southeast Guizhou, it＇s speculated that Karlin gold deposit existed in the Early Palaeozoic group on the Jiangnan organic belt. Although the metallogenic condition of gold deposit in southeast Guizhou is worse than west Hunan and the Karlin gold deposit has not be found yet, it still has good exploration potential. Anticline, especially the Jialidong period anticlinal structure and its associated rift structure is the most important controlled geologic condition for the mineralization of gold deposits in south- east Guizhou, so is the preferred target region for the mineralization forecast and prospecting, especially the fold rift structure which has gold and its associated element geochemical abnormality distributed is important prospecting target. Meanwhile, the deep mineralization of some regional rift structures, which has metallizing presentation, should be considered.