| 大别山南麓典型岩体磁组构学研究的地质意义 |
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| 引用本文： | 林文姣,杨文强.大别山南麓典型岩体磁组构学研究的地质意义[J].地质科技情报,2006,25(4):52-54. |
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| 作者姓名： | 林文姣 杨文强 |
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| 作者单位： | 中国地质大学地球科学学院,武汉,430074 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 利用磁组构学的多参数、高精度以及定量化的优点,对大别山南麓的马垅、麻桥2个典型岩体进行了花岗岩类的岩浆动力学研究.测试表明,样品的磁化率及其各向异性揭示这2个岩体具有明显的磁面理或磁线理特征,进而判断马垅、麻桥岩体应分属挤压、拉张的古应力环境.实例研究证实,磁组构学方法对于岩浆动力学,特别是岩体构造应力的属性分析非常有效.
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| 关 键 词： | 磁组构学 动力学 花岗岩 |
| 文章编号： | 1000-7849(2006)04-0052-03 |
| 收稿时间： | 2005-01-27 |
| 修稿时间： | 2005年1月27日 |
Magnetic Fabric Characteristics of Typical Granite Bodies at the Southern Foot of Dabie Mountains and Their Geological Significance |
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| LIN Wen-Jiao,YANG Wen-Qiang.Magnetic Fabric Characteristics of Typical Granite Bodies at the Southern Foot of Dabie Mountains and Their Geological Significance[J].Geological Science and Technology Information,2006,25(4):52-54. |
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| Authors: | LIN Wen-Jiao YANG Wen-Qiang |
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| Institution: | Faculty of Earth Sciences ,China University of Geosciences , Wuhan 430074, China |
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| Abstract: | The method of magnetic fabric is featured by multiply-parameters, high-resolution and quantification. This study on the Malong and Maqiao magmas, two typical granite bodies at the southern foot of Dabie Mountains,is an application of the method in magma dynamics. Results indicate that the magnetic susceptibility and anisotropy of the two granite distinctly delineate their magnetic lineation and foliation, and accordingly reveal that the Malong and Maqiao granite bodies formed respectively in a compressive and tensile paleo-stress setting. This attempt demonstrates that the method of magnetic fabric is effective in the field of magma dynamics, especially for reconstruction of the stress a granite body experienced. |
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| Keywords: | magnetic fabric dynamics granite |
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