| 海沟岩体的成岩时代及成因探讨 |
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| 引用本文： | 焦保权,李世平,王艳萍,陶胜辉,朴瑛,赵坤.海沟岩体的成岩时代及成因探讨[J].吉林地质,2008,27(2). |
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| 作者姓名： | 焦保权 李世平 王艳萍 陶胜辉 朴瑛 赵坤 |
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| 作者单位： | 吉林省第五地质调查所,吉林,九台,130500 |
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| 摘 要： | 本文在研究海沟岩体地质、岩石化学、地球化学特征的基础上,对海沟岩体的成岩时代和成因进行了探讨。同位素结果表明,海沟岩体的就位年龄为167Ma-185.6Ma,属燕山早期第一阶段岩浆活动的产物;岩体稳定同位素特征分析、侵位特征以及稀土元素特征的研究,确定海沟岩体为幔、壳混源型。
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| 关 键 词： | 海沟岩体 就位年龄 幔壳混源 |
Diagenetic epoch and genesis of Haigou rock bodies |
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| JIAO Bao-quan,LI Shi-ping,WANG Yan-ping,TAO Sheng-hui,PIAO Ying,ZHAO Kun.Diagenetic epoch and genesis of Haigou rock bodies[J].Jilin Geology,2008,27(2). |
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| Authors: | JIAO Bao-quan LI Shi-ping WANG Yan-ping TAO Sheng-hui PIAO Ying ZHAO Kun |
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| Institution: | JIAO Bao-quan,LI Shi-ping,WANG Yan-ping,TAO Sheng-hui,PIAO Ying,ZHAO KunThe Fifth Geologic Survey of Jilin Province,Jiutai 130500,Jilin,China |
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| Abstract: | Based on Haigou rock bodies lithogeochemistry,geochemical characteristics,the diagenetic epoch and genesis of Haigou rock bodies were studied in this paper.The isotopic age result shows that emplacement age of Haigou rock bodies is 167Ma-185.6 Ma,which belong to the early Yanshan,the first stage magmatic activity pro-duct.Through the analysis and study for isotope,emplacement and REE characteristics,it is definite that Haigou rock bodies belong to the mix mantle-crust type. |
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| Keywords: | Haigou rock bodies emplacement age mix mantle-crust source |
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