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| 内蒙古中部巴音勿拉山岩体的地质特征及构造意义 | |
| 引用本文： | 王大勇,于淼,高迪,王挽琼,白新会,蒋孝君.内蒙古中部巴音勿拉山岩体的地质特征及构造意义[J].吉林地质,2014(3):5-12. |
| 作者姓名： | 王大勇 于淼 高迪 王挽琼 白新会 蒋孝君 |
| 作者单位： | 1. 吉林省地质科学研究所,吉林长春,130012 2. 吉林省地质勘查基金管理中心,吉林长春,130061 3. 吉林省第一地质调查所,吉林长春,130033 4. 吉林大学地球科学学院,吉林长春,130061 |
| 基金项目： | 中国地质调查局项目，国家自然科学基金 |
| 摘 要： | 巴音勿拉山岩体位于华北克拉通北部,白乃庙岛弧岩带南部,锆石LA-ICP-MS U-Pb定年结果及锆石特征表明其侵位时代为(410.9±1.2)Ma。岩体岩石组合为一套正长岩杂岩,富钾富碱,铝质量分数较高,属偏铝质岩石。地球化学特征表明岩浆源区为岩石圈地幔,岩浆演化过程中下地壳的同化作用显著。其形成与白乃庙岛弧岩带与华北克拉通碰撞后的伸展作用有关。 |
| 关 键 词： | 内蒙古 早泥盆世 正长岩 华北克拉通北部 弧-陆碰撞 |
Geological features and tectonic signiifcance of Bayinwulashan pluton,central Inner Mongolia |
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| WANG Da-yong,YU Miao,GAO Di,WANG Wan-qiong,Bai Xin-hui,JIANG Xiao-jun.Geological features and tectonic signiifcance of Bayinwulashan pluton,central Inner Mongolia[J].Jilin Geology,2014(3):5-12. | |
| Authors: | WANG Da-yong YU Miao GAO Di WANG Wan-qiong Bai Xin-hui JIANG Xiao-jun |
| Institution: | WANG Da-yong, YU Miao, GAO Di, WANG Wan-qiong, Bai Xin-hui, JIANG Xiao-jun( 1.Institute of Geological Sciences of Jilin Province, Changchun 130012, Jilin, China;2.Jilin Provincial Geological Prospecting Fund Management Center, Changchun130061,Jilin, China;3. The First Geological Survey of Jilin Province, Changchun 130033, Jilin, China;4. College of Earth Science, Jilin University, Changchun 130061, China) |
| Abstract: | Bayinwulashan pluton was located in the north of North China Craton and the south of the Bainaimiao Arc. Zircon LA-ICP-MS U-Pb dating and the characteristic of zircons indicates that the age of pluton was （410.9 ± 1.2） Ma. Pluton is composed of complex rocks of syenite, characterized by a strong enrichment in kalium and alkali, has high content of aluminum and belong to metaluminous series. Geochemical characteristics show that magma source of pluton was the lithospheric mantle, and the assimilation of lower crust was obvious during the magma evolution process. Its formation was concerned with the extension after the collision of North China Craton and Bainaimiao Arc. |
| Keywords: | Inner Mongolia Early Devonian syenite the north of North China Craton arc-continent collision |
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