陕西省勉略宁地区铅-锌矿地质特征及找矿方向

Geological characteristics and prospecting targets of lead-zinc deposits in Mia-Lue-Ning region,Shanxi

勉略宁“三角地区”铅-锌矿可分为晚古生代海底热水喷流沉积型及元古代岛弧火山喷流沉积型两种类型,前者产于勉略古缝合带中,与秦岭褶皱带断陷盆地内铅-锌矿有一定的可对比性;后者产于元古代火山基底内,成矿与火山机构关系密切。以成矿构造背景为依据,结合已知矿床的分布和主要成因类型,区内可划分为关地门-两河口、东沟坝-银硐山及刘家坪-孟家梁三个铅-锌多金属成矿带,指出了不同区带的找矿方向。

Lead-zinc deposits in Mian-Lue-Ning region are divided into two types. Late Paleozoic seabed hydrothermal cascade deposition,located in Mianlue paleo-suture, is resemble to ones in breakdefect basin of the Qingling Orogenic System. Island-arc volcanic spout deposition, situated on Proterozoic volcanic basis rocks, is closely related with vocanic framework. Based on the setting of the geo-tectonic,in respect of distribution of known deposits and its main genetic types,the region is divided into 3 mineralization zones, Guandimen-Lianghekou, Donggouba-Yindongshan and Liujiaping-Mengjialiang ore belt. The prospecting targets are pointed out in the different districts.