Can rock magnetic fabric reveal strain? Case studies of Early Triassic limestones from South China Block
文献类型：期刊论文
| 作者 | Han, YL ; Tan, XD ; Kodama, KP |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2009 |
| 卷号 | 52期号:10页码:2588-2594 |
| 关键词 | Limestones Magnetic fabrics Strain Rock magnetism |
| ISSN号 | 0001-5733 |
| 通讯作者 | xdtan@scsio.ac.cn |
| 中文摘要 | It is generally regarded that magnetic fabrics can effectively reveal strain in rocks. In order to investigate the relationship between different magnetic fabric types and different stages of strain, we conducted a combined analysis of rock magnetics, magnetic fabrics and mesoscopic deformation features for Early Triassic limestones from two areas in the South China Block. Samples from the Tongshan county, Hubei province underwent three stages of deformation, which provided an ideal opportunity to test the relationship between magnetic fabric and multiple deformations. The minimum axes of AMS and AAR ellipsoids are normal to the bedding and the intermediate and maximum axes tie within the bedding, indicating deposition and compaction fabrics having not been affected by tectonic strain. Samples from the Lian county, Guangdong province experienced tectonic strain as evidenced by pervasive pressure solution seams and calcite veins. The principal directions of AMS are scattered, but those of AAR are well clustered showing a triaxial fabric. The maximum axes of AAR are distributed around the maximum stress direction indicated by the geometry of calcite veins. The initial compaction fabric was replaced by tectonic strain. These results suggest: (1) AAR can better reflect pervasive strain than AMS; (2) Only under the condition that the scope of strain is less than that of the sample call magnetic fabric effectively reveal strain. |
| 学科主题 | Geochemistry & Geophysics |
| 收录类别 | SCI |
| 原文出处 | SCIENCE PRESS |
| WOS记录号 | WOS:000271403300018 |
| 公开日期 | 2011-07-03 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/4594]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 推荐引用方式 GB/T 7714 | Han, YL,Tan, XD,Kodama, KP. Can rock magnetic fabric reveal strain? Case studies of Early Triassic limestones from South China Block[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2009,52(10):2588-2594. |
| APA | Han, YL,Tan, XD,&Kodama, KP.(2009).Can rock magnetic fabric reveal strain? Case studies of Early Triassic limestones from South China Block.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,52(10),2588-2594. |
| MLA | Han, YL,et al."Can rock magnetic fabric reveal strain? Case studies of Early Triassic limestones from South China Block".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 52.10(2009):2588-2594. |
入库方式： OAI收割
来源：南海海洋研究所
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