| The morphotectonics and its evolutionary dynamics of the central Southwest Indian Ridge (49 degrees to 51 degrees E) | |
| Liang Yuyang1,2,3; Li Jiabiao3; Li Shoujun3; Ruan Aiguo3; Ni Jianyu3; Yu Zhiteng3; Zhu Lei4; Li, JB | |
| 2013-12-01 | |
| 发表期刊 | ACTA OCEANOLOGICA SINICA
 |
| ISSN | 0253-505X |
| 卷号 | 32期号:12页码:87-95 |
| 文章类型 | Article |
| 摘要 | The morphotectonic features and their evolution of the central Southwest Indian Ridge (SWIR) are discussed on the base of the high-resolution full-coverage bathymetric data on the ridge between 49 degrees-51 degrees E. A comparative analysis of the topographic features of the axial and flank area indicates that the axial topography is alternated by the ridge and trough with en echelon pattern and evolved under a spatial-temporal migration especially in 49 degrees-50.17 degrees E. It is probably due to the undulation at the top of the mantle asthenosphere, which is propagating with the mantle flow. From 50.17 degrees to 50.7 degrees E, is a topographical high terrain with a crust much thicker than the global average of the oceanic crust thickness. Its origin should be independent of the spreading mechanism of ultra-slow spreading ridges. The large numbers of volcanoes in this area indicate robust magmatic activity and may be related to the Crozet hot spot according to RMBA (residual mantle Bouguer anomaly). The different geomorphological feature between the north and south flanks of the ridge indicates an asymmetric spreading, and leading to the development of the OCC (oceanic core complex). The tectonic activity of the south frank is stronger than the north and is favorable to develop the OCC. The first found active hydrothermal vent in the SWIR at 37 degrees 47'S, 49 degrees 39'E is thought to be associated with the detachment fault related to the OCC.; The morphotectonic features and their evolution of the central Southwest Indian Ridge (SWIR) are discussed on the base of the high-resolution full-coverage bathymetric data on the ridge between 49 degrees-51 degrees E. A comparative analysis of the topographic features of the axial and flank area indicates that the axial topography is alternated by the ridge and trough with en echelon pattern and evolved under a spatial-temporal migration especially in 49 degrees-50.17 degrees E. It is probably due to the undulation at the top of the mantle asthenosphere, which is propagating with the mantle flow. From 50.17 degrees to 50.7 degrees E, is a topographical high terrain with a crust much thicker than the global average of the oceanic crust thickness. Its origin should be independent of the spreading mechanism of ultra-slow spreading ridges. The large numbers of volcanoes in this area indicate robust magmatic activity and may be related to the Crozet hot spot according to RMBA (residual mantle Bouguer anomaly). The different geomorphological feature between the north and south flanks of the ridge indicates an asymmetric spreading, and leading to the development of the OCC (oceanic core complex). The tectonic activity of the south frank is stronger than the north and is favorable to develop the OCC. The first found active hydrothermal vent in the SWIR at 37 degrees 47'S, 49 degrees 39'E is thought to be associated with the detachment fault related to the OCC. |
| 关键词 | Ultra-slow Spreading Multibeam Bathymetry Morphotectonics Oceanic Core Complex Southwest Indian Ridge |
| 学科领域 | Oceanography |
| DOI | 10.1007/s13131-013-0394-1 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Oceanography |
| WOS类目 | Oceanography |
| WOS记录号 | WOS:000328528400011 |
| WOS关键词 | MID-ATLANTIC RIDGE ; SEA-FLOOR GENERATION ; CHINA SEA ; ACCRETIONARY WEDGE ; SPREADING RIDGES ; TECTONICS ; OCEAN ; 69-DEGREES-E ; BATHYMETRY ; MORPHOLOGY |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/16319 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Li, JB |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.State Ocean Adm, Inst Oceanog 2, Key Lab Submarine Geosci, Hangzhou 310012, Zhejiang, Peoples R China 4.China Ocean Mineral Resources Res & Dev Assoc, Beijing 100860, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Liang Yuyang,Li Jiabiao,Li Shoujun,et al. The morphotectonics and its evolutionary dynamics of the central Southwest Indian Ridge (49 degrees to 51 degrees E)[J]. ACTA OCEANOLOGICA SINICA,2013,32(12):87-95. |
| APA | Liang Yuyang.,Li Jiabiao.,Li Shoujun.,Ruan Aiguo.,Ni Jianyu.,...&Li, JB.(2013).The morphotectonics and its evolutionary dynamics of the central Southwest Indian Ridge (49 degrees to 51 degrees E).ACTA OCEANOLOGICA SINICA,32(12),87-95. |
| MLA | Liang Yuyang,et al."The morphotectonics and its evolutionary dynamics of the central Southwest Indian Ridge (49 degrees to 51 degrees E)".ACTA OCEANOLOGICA SINICA 32.12(2013):87-95. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| The morphotectonics （1299KB） | 限制开放 | CC BY-NC-SA | 浏览 | |||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论