武当—桐柏—大别Mo- REE- Au- Ag- Pb- Zn多金属成矿带主要地质成矿特征及资源潜力分析

武当—桐柏—大别成矿带近期找矿成果显著,先后发现多个大型超大型矿床,具备成为国家级重要成矿带的条件,后经专家论证确定为全国重要成矿区带。该成矿带夹持于华北和扬子地块间,地层发育齐全,岩浆活动频繁,变质作用强烈,地质构造极其复杂,裂谷、区域隆起、深大断裂、剪切带等构造控矿特征突出,新元古代和燕山期两次岩浆作用成矿意义大,变质成矿作用强。矿床主要受矿源建造、燕山期中酸性岩浆侵入活动、岩相古地理、后生改造等因素制约,空间上有"北西西成带,北东东成行"和多矿种共生分布规律,时间上存在燕山等5个成矿高峰期。预期金、银、铜、铅、锌、钼等主攻矿种的找矿潜力巨大。在全国矿产资源潜力评价及找矿新突破基础上,在该区带内划分了四个重点远景区作为国家整装勘查区的后备选区。

Metallogenic Characteristics and Mineral Resource Potential Analysis of the Wudang- Tongbai- Dabie Mo- REE- Au- Ag- Pb- Zn Metallogenic Belt

The Wudang- Tongbai- Dabie Mo- REE- Au- Ag- Pb- Zn metallogenic belt has some important prospecting breakthrough, with several superlarge ore deposits discovered recently. It has become one of the important national level metallogenic zones, and this has been confirmed by experts. The Wudang Tongbai Dabie metallogenic belt is situated in the junction zone of North China block and Yangtze block, which has complicated tectonic features with well developed stratification, drastic metamorphic effect and frequent magmatic activities. Magmatic activities during the Neoproterozoic and Yanshan epoch played significant roles in mineralization. Ore deposits distribution is controlled by origin of ore forming material, invading activity of Yanshanian intermediate felsic rocks, paleographical facies, reformation, and several mineral species occurs together trending in NWW and NEE spatially. Five metallogenic peaks including in Yanshanian epoch were identified. It can be predicted that such minerals as Au,Ag,Cu,Pb,Zn and Mo have great potential resources. Based on the assessment results of national mineral resources project and new exploration breakthrough, four important prospective area have been delineated, which can be served as candidate areas for national mineral exploration strategy.