| 吉林临江迎门岔铜(钼)矿花岗闪长斑岩年代学和地球化学特征 |
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| 引用本文： | 王浩,李碧乐,彭勃,王硕,靳皇玉,聂立军.吉林临江迎门岔铜(钼)矿花岗闪长斑岩年代学和地球化学特征[J].世界地质,2016,35(2):336-347. |
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| 作者姓名： | 王浩 李碧乐 彭勃 王硕 靳皇玉 聂立军 |
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| 作者单位： | 1. 吉林大学 地球科学学院，长春 130061; 2． 吉林省地质矿产勘查开发局，长春 130061; 3. 长安大学 地球科学与资源学院，西安 710054; 4. 吉林省地质调查院，长春 130061; 5. 吉林省区域地质矿产调查所，长春 130022 |
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| 摘 要： | LA-ICP-MS锆石U-Pb测年得出花岗闪长斑岩的成岩年龄为(168±1)Ma(中侏罗世),属燕山期岩浆活动产物。岩石地球化学特征显示岩石为准铝质-弱过铝质高钾钙碱性系列,富集Ba、K、Sr,亏损Nb、Ta、P、Ti,δEu异常不明显,属Ⅰ型花岗岩,岩浆来源于地壳部分熔融。综合区域同时代火成岩构造演化背景,认为该矿床形成于古太平洋板块向欧亚大陆俯冲下的火山弧环境。
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| 关 键 词： | 迎门岔花岗闪长斑岩 锆石 U-Pb 年代学 地球化学 吉林 临江 |
Chronology and geochemistry for granodiorite porphyry from Yingmencha Cu- - Mo deposit in Linjiang of Jilin |
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| WANG Hao,LI Bi-Le,PENG Bo,WANG Shuo,JIN Huang-Yu,NIE Li-Jun.Chronology and geochemistry for granodiorite porphyry from Yingmencha Cu- - Mo deposit in Linjiang of Jilin[J].World Geology,2016,35(2):336-347. |
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| Authors: | WANG Hao LI Bi-Le PENG Bo WANG Shuo JIN Huang-Yu NIE Li-Jun |
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| Institution: | 1. College of Earth Sciences，Jilin University，Changchun 130061，China; 2. Jilin Bureau of Geology and Mineral Ｒesources，Changchun 130061，China; 3. The School of Earth Sciences and Ｒesources，Chang’an University，Xi’an 710054，China; 4. Institute of Geological Survey of Jilin Province，Changchun 130061，China; 5. Ｒegional Survey and Mineral Ｒesources of Jilin Province，Changchun 130022，China |
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| Abstract: | The diagenetic age of granodiorite porphyry in Yingmencha of Jilin Linjiang is (168 ±1) Ma (Mid- dle Jurassic) based on LA-ICP-MS zircon U-Pb dating，a product of Yanshan magmatic activity． The geochemical study shows that the rocks are characterized by aluminum- weakly peraluminous，high in potassium calc- alkaline se- ries，enriched in Sr， Ba and K， depleted in Nb， Ti, Ta and P， and not significant in δEu anomaly， which indicate the rocks belong to the I- type granite，and the magma was derived from the partial melting of crust． Combined with the regional tectonic evolution background of igneous rocks，it is considered that the Yingmencha granodiorite por- phyry and copper (molybdenum) deposit formed in the environment of volcanic arc under the subduction of the Pa- leo- Pacific plate to the Eurasian plate． |
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| Keywords: | Granodiorite porphyry Zircon U-Pb chronology Geochemistry Yingmencha Linjiang of Jilin |
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