摘要
湘西龙山铅锌矿带与鄂西鹤峰铅锌矿带属于同一个铅锌矿带,成矿地质条件相似。矿床主要赋存于上寒武统耗子沱群上段和下奥陶统南津关组底部,呈NNE向带状分布,集中产出。通过区域及矿区地质地球化学条件分析、岩相古地理研究和典型矿床成矿特征的比较,认为龙山铅锌矿带形成于鹤峰—咸丰隆起带南东边缘的潮滩相和生物滩(礁)相之碳酸盐沉积台地,成矿具有同生作用与热水沉积双重特征,矿床规模较大,矿石质量较好,成矿地质条件较优越,具有良好的找矿前景。提出了找矿标志与地区及运用"热水成矿"理论开展新一轮以层状、似层状铅锌矿床为重点的找矿研究工作。
The two Lead-Zinc ore zones in Longshan County of west Hunan and Hefeng County in west Hubei belong to same Lead-Zinc ore zone with similar metallogenic geological condition. The Longshan Lead-Zinc deposit,located mainly in upper segment of Upper Cambrian Haozituo Formation and bottom of Lower Ordovician Nanjinguan Formation, forms densely as NNE banded distribution. Based on the analysis of geological and geochemical conditions of region and mining area, research on lithofacies paleogeography, comparison on metallogenic characteristics of typical deposit, it is considered that the Lead-Zinc deposit belt was formed in carbonate sedimentary platform between the littoral facies and biobank （bioherm） facies in southeast edge of Hefeng-Xianfeng uplift zone with metallogenic dual characteristics as syngenesis and hydrothermal sedimentation, the quality of ores in large-scale deposit is relatively preferable with superior metallogenic geological condition and fine prospecting potential. The authors propose prospecting criteria and area, moreover suggest to starting a new round of prospecting research work centering on lamellar,quasi-lamellar Lead-Zinc deposit by application of hydrothermal mineralization theory.
出处
《资源环境与工程》
2008年第2期151-158,共8页
Resources Environment & Engineering
关键词
湘西
铅锌矿
沉积相
地质地球化学特征
找矿方向
western Hunan
lead-zinc deposit
sedimentary facies
geological and geochemical characteristics
prospecting direction
