| 胶东崮庄闪长岩锆石U-Pb年代学和岩石地球化学研究 |
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| 引用本文： | 李杰,李世勇,宋英昕,姜梦瑶,毕明光,王珊珊,蒋雷,孙亮亮.胶东崮庄闪长岩锆石U-Pb年代学和岩石地球化学研究[J].山东国土资源,2018,34(4). |
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| 作者姓名： | 李杰 李世勇 宋英昕 姜梦瑶 毕明光 王珊珊 蒋雷 孙亮亮 |
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| 作者单位： | 河北地质大学资源学院，中国科学院海洋研究所深海研究中心,山东省物化探勘查院,山东省地质科学研究院,河北地质大学资源学院,山东省第六地质矿产勘查院,山东省第六地质矿产勘查院,山东省第六地质矿产勘查院,山东省第六地质矿产勘查院 |
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| 摘 要： | 对胶东崮庄岩体黑云母闪长岩进行了岩石学、岩石地球化学和年代学研究。研究表明:崮庄岩体黑云母闪长岩为钙碱性系列岩石,岩石富集大离子亲石元素(如K,Ba,Rb)、LREE和活泼的不相容元素(如Th,U),相对亏损高场强元素(如Nb,Ta,Ti,P),崮庄闪长岩属壳幔混合成因,即由交代地幔部分熔融形成的基性岩浆与地壳物质熔融形成的酸性岩浆混合形成的。构造环境判别显示崮庄闪长岩属火山弧花岗岩,暗示伟德山序列花岗岩与古太平洋板块向欧亚板块俯冲密切相关。崮庄闪长岩LA-ICP-MS锆石U-Pb年龄值为(111.7±0.6)Ma,属燕山期早白垩世。
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| 关 键 词： | LAICPMS UPb定年 岩浆混合 岩石成因 伟德山花岗岩 固庄岩体 胶东 |
Study on Zircon UPb Chronology and Rock Geochemistry of Guzhuang Diorite in Jiaodong Area |
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| LI Jie,LI Shiyong,SONG Yingxin,JIANG Mengyao,BI Mingguang,WANG Shanshan,JIANG Lei and SUN Liangliang.Study on Zircon UPb Chronology and Rock Geochemistry of Guzhuang Diorite in Jiaodong Area[J].Land and Resources in SHANDONG Province,2018,34(4). |
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| Authors: | LI Jie LI Shiyong SONG Yingxin JIANG Mengyao BI Mingguang WANG Shanshan JIANG Lei and SUN Liangliang |
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| Abstract: | The petrology, geochemistry and geochronology of Guzhuang diorite have been studied in this paper. It is showed that diorite is a series of calcalkaline rocks, which are enriched in LILE (such as K, Ba, Rb), LREE and more mobile incompatible elements (such as Th, U), relatively depleting in HFSE (such as Nb, Ta, Ti, P). Guzhuang diorite belongs to mixed formation of crust and mantle. It is formed by the mixture of basic magma formed by partial melting of metasomatic mantle and the mixture of acid magma formed by the melting of crustal materials. Tectonic discrimination shows that Guzhuang diorite belongs to volcanic arc granite. It is suggested Weideshan granite series and Paleo Pacific plate to the Eurasian plate is closely related.LAICPMS zircon UPb dating is (111.7 ±0.6)Ma, which belongs to early Cretaceous.in Yanshanian period. |
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| Keywords: | LAICPMS UPb dating magmatic mixing petrogenesis Weideshan granite Guzhuang rock body Jiaodong area |
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