| 胶东院格庄岩体中辉钼矿Re-Os同位素测年及其地质意义 |
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| 引用本文： | 朱保霖,柳振江,成少博,薛玉山,王建平,徐磊.胶东院格庄岩体中辉钼矿Re-Os同位素测年及其地质意义[J].中国地质,2016(4):1353-1366. |
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| 作者姓名： | 朱保霖 柳振江 成少博 薛玉山 王建平 徐磊 |
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| 作者单位： | 中国地质大学(北京)地球科学与资源学院, 北京 100083,中国地质大学(北京)地球科学与资源学院, 北京 100083,中国地质大学(北京)地球科学与资源学院, 北京 100083,西安西北有色地质研究院有限公司, 陕西 西安 710054,中国地质大学(北京)地球科学与资源学院, 北京 100083,中国地质大学(北京)地球科学与资源学院, 北京 100083 |
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| 基金项目： | 国家自然科学基金（41202062，41230311）和中央高校基本科研业务费专项资金（2652015043）联合资助。作 |
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| 摘 要： | 院格庄花岗岩体位于烟台市牟平区境内,是胶东地区燕山晚期伟德山超单元一个典型的复式岩体。本次研究针对花岗岩体内发育的辉钼矿开展Re-Os同位素测年,同时对采集于花岗岩体的新鲜样品进行了主量元素、微量元素和稀土元素测试分析。结果显示,院格庄花岗岩属于高钾富碱的钙碱性岩,具准铝质-过铝质特征,是壳幔混合来源的花岗岩。此外,辉钼矿Re-Os等时线年龄为(117.8±5.7)Ma,加权平均年龄为(118.27±0.70)Ma,与胶东已知多个燕山晚期铜钼矿赋矿岩体特征及成矿时代一致,显示该区可能具有良好的钼多金属成矿前景。
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| 关 键 词： | 院格庄岩体 辉钼矿Re?Os同位素年龄 岩石地球化学 胶东 |
| 收稿时间： | 1/8/2016 12:00:00 AM |
| 修稿时间： | 2016/3/23 0:00:00 |
Re-Os isotopic dating of molybdenites from the Yuangezhuang pluton in Jiaodong and its geological significance |
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| ZHU Bao-lin,LIU Zhen-jiang,CHENG Shao-bo,XUE Yu-shan,WANG Jian-ping and XU Lei.Re-Os isotopic dating of molybdenites from the Yuangezhuang pluton in Jiaodong and its geological significance[J].Chinese Geology,2016(4):1353-1366. |
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| Authors: | ZHU Bao-lin LIU Zhen-jiang CHENG Shao-bo XUE Yu-shan WANG Jian-ping and XU Lei |
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| Institution: | School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China,School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China,School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China,Northwest Geological Research Institute of Non-ferrous Metallic Ores, Xi''an 710054, Shaanxi, China,School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China and School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China |
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| Abstract: | The Yuangezhuang pluton lies in Muping block, Yantai, Shandong Province. It is a typical granitic complex of Weideshan Late Yanshanian super-unit in Jiaodong. In this study, direct Re-Os dating of molybdenites collected from the granitoids was carried out, and the major elements and trace elements in whole rock samples were also analyzed. The results show that the pluton probably belongs to a kind of granite derived from mantle-crust and is characterized by high potassium and alkali as well as metaluminous to peraluminous nature. Besides, the isochron age is 117.8±5.7 Ma, with a weighted average of 118.27±0.70 Ma, similar to data of the metallogenetic epoch and characteristics of the host rock from many known Cu-Mo deposits in Late Yanshanian period. This suggests that it probably has a good prospect for molybdenum polymetallic mineralization. |
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| Keywords: | Yuangezhuang pluton molybdenites Re-Os isotopic dating petrogeochemical characteristics Jiaodong |
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