Magnetic fabric study and its tectonic significance of suture zones in joint area of Qinling and Qilianshan
文献类型：期刊论文
| 作者 | Liang Wen-Tian1; Zhang Guo-Wei1; Lu Ru-Kui1; Pei Xian-Zhi2; Jin Chun-Sheng3; Wang Jian-Qi1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2009 |
| 卷号 | 52期号:1页码:140-149 |
| 关键词 | Xinyang Yuanlong zone Tangzang-Guanzizhen Wushan zone Magnetic fabric (AMS) Suture zone Shear zone Joint area of Qinling and Qilianshan |
| ISSN号 | 0001-5733 |
| 文献子类 | Article |
| 英文摘要 | Tangzang-Guanzizhen-Wushan and Xinyang-Yuanlong tectonic zones are the major suture zones in Joint area of Qinling and Qilianshan mountains. Structure analysis and the anisotropy of low-field magnetic susceptibility (AMS) of 168 samples from 41 sites was measured to determine the strain and fabric of the high strain shear zone in the suture zones. Most of the mean susceptibilities (K(m)) are low. Magnetic ellipsoid analysis displays that most of the samples are dominated by shear and oblate compressional fabric, and have high values of anisotropy magnitude which increases with the intensity of deformation. Caution should be exercised when use T and P' to deduce the shape of magnetic ellipsoid and the deformation intensity for they are also affected by rock types. The directions of principle susceptibilities are closely related to deformation, the magnetic foliations defined by K(max) and K(int) are divided into two conjugate groups that imply the gridding configuration of high strain shear zone; clustered foliation and more scattered lineation are attributed to the shearing and flattening regime. Most of the samples have steep magnetic foliations and subhorizontal magnetic lineations and others have steep lineation, which demonstrate the transpressional characteristics of the shear zone. And shear sense of complex high strain zone inferred from magnetic fabric may be unreliable or even wrong for variation of the foliation attitude across the shear zone and great angle between K(min) and the striking of shear zone. |
| WOS关键词 | SUSCEPTIBILITY ; ANISOTROPY ; STRAIN ; ROCKS ; DEFORMATION ; SEDIMENTS ; FRANCE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000262974800015 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/71142]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liang Wen-Tian |
| 作者单位 | 1.NW Univ Xian, Key Lab Continental Dynam, Xian 710069, Peoples R China 2.Changan Univ, Coll Earth Sci & Land Resources, Xian 710054, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang Wen-Tian,Zhang Guo-Wei,Lu Ru-Kui,et al. Magnetic fabric study and its tectonic significance of suture zones in joint area of Qinling and Qilianshan[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2009,52(1):140-149. |
| APA | Liang Wen-Tian,Zhang Guo-Wei,Lu Ru-Kui,Pei Xian-Zhi,Jin Chun-Sheng,&Wang Jian-Qi.(2009).Magnetic fabric study and its tectonic significance of suture zones in joint area of Qinling and Qilianshan.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,52(1),140-149. |
| MLA | Liang Wen-Tian,et al."Magnetic fabric study and its tectonic significance of suture zones in joint area of Qinling and Qilianshan".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 52.1(2009):140-149. |
入库方式： OAI收割
来源：地质与地球物理研究所
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