| 胶东半岛烟台地区邢家山钨钼矿床地质特征及其辉钼矿Re-Os同位素测年 |
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| 引用本文： | 刘善宝,王登红,陈毓川,周会青,屈文俊,王成辉.胶东半岛烟台地区邢家山钨钼矿床地质特征及其辉钼矿Re-Os同位素测年[J].中国区域地质,2011(8):1294-1302. |
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| 作者姓名： | 刘善宝 王登红 陈毓川 周会青 屈文俊 王成辉 |
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| 作者单位： | [1]中国地质科学院矿产资源研究所,北京100037 [2]中国地质科学院,北京100037 [3]山东省第三地质矿产勘查院,山东烟台264000 [4]国家地质实验测试中心,北京100037 |
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| 基金项目： | 中国地质科学院矿产资源研究所基本业务费专项资金项目《南岭东段——赣南地区钨矿与铀矿的成因联系研究》（编号：K0906）; 财政部、科技部深部探测技术与实验研究专项《南岭成矿带地壳岩浆系统结构探测实验研究》课题（编号：SinoProbe-03-01）; 国土资源部危机矿山专项《桂东——粤西地区铅锌金等矿床成矿规律总结研究》项目（编号：20089946） |
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| 摘 要： | 邢家山钨钼矿床是山东省唯一的大型钼矿床,其中伴生钨达到中型规模。辉钼矿Re-Os同位素测年结果表明,5件辉钼矿的^187Re-^187Os等时线年龄为157.6Ma±3.9Ma,MSWD=0.24;加权平均模式年龄为161Ma±1.0Ma,MSWD=0.7。胶东金矿省金矿的主成矿期为110～130Ma,钨钼矿床的成矿时代比金矿早30～50Ma,表明胶东半岛在中生代至少存在2期成矿作用,早期以钼成矿为主,晚期以金成矿为主。结合区域成矿年代学数据,邢家山钨钼矿床成矿时代与南岭成矿带东段钨矿床主成矿期是一致的,表明150～160Ma是中国东部一个重要的成矿作用时期,为构筑中国东部成矿域的精细成矿年代学结构提供了依据。
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| 关 键 词： | 邢家山钨钼矿床 成矿时代 胶东半岛 |
Geological characteristics and molybdenite Re-Os age of the Xingjiashan W-Mo deposit in Yantai area,Jiaodong Peninsula,Shandong Province |
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| LIU Shan-bao,WANG Deng-hong,CHEN Yu-chuan,ZHOU Hui-qing,QU Wen-jun,WANG Cheng-hui.Geological characteristics and molybdenite Re-Os age of the Xingjiashan W-Mo deposit in Yantai area,Jiaodong Peninsula,Shandong Province[J].Regional Geology of China,2011(8):1294-1302. |
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| Authors: | LIU Shan-bao WANG Deng-hong CHEN Yu-chuan ZHOU Hui-qing QU Wen-jun WANG Cheng-hui |
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| Institution: | 1.Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China; 2.Chinese Academy of Geological Sciences,Beijing 100037,China; 3.No.3 Institute of Geological and Mineral Resources Survey of Shandong Province,Yantai 264000,Shandong,China; 4.National Research Center of Geoanalysis,Beijing 100037,China ) |
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| Abstract: | Located in the Jiaodong metallogenic province,the Xinjiashan ore deposit is the only large-size molybdenum deposit in Shandong Province,and the associated tungsten resources in this ore deposit have already reached middle-scale reserves.This study provides the first high-precision dating of the mineralization age of this ore deposit.Re-Os dating of five molybdenite separates from ores has yielded an isochron age of 157.6±3.9Ma（MSWD=0.24）,and a weighted mean age of 161Ma±1.0Ma（MSWD=0.7）.The main metallogenic epoch of Jiaodong metallogenic province is 110～130Ma,which means the metallogenic age of W and Mo mineralization in this area is earlier than that of Au.It is indicated that there existed at least two ore-forming periods in Jiaodong,with the former being W,Mo,and the latter being Au.In association with the isotope data obtained from East Nanling,the authors hold that the W metallogenic epochs of the two areas are consistent with each other.This study suggests that there existed an important mineralization epoch during 150～160Ma in eastern China. |
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| Keywords: | Xingjiashan W-Mo deposit ore-forming age Jiaodong Peninsula |
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