Late Cenozoic subsidence and sedimentary features of the basins in the northwestern South China Sea : implications for the development of the deep anomalous progress
文献类型：期刊论文
| 作者 | Liu Hang1; Xu ZiYing3; Shi XiaoBin; Chen Mei2; Ren ZiQiang2; Liu Kai1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2019 |
| 卷号 | 62期号:2页码:587 |
| 关键词 | Leigiong low-velocity anomalous structure Tectonic subsidence Erosion surface feature Beibuwan Basin Zhu III Depression |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2019L0757 |
| 英文摘要 | A large amount of alkaline basalts developed in the Leiqiong area, northwestern South China Sea during the Late Cenozoic. Seismic tomography shows that just below the Leiqiong region, there is a mantle plume-like low-velocity thermal anomalous structure (LVA). In order to reveal the LVA's activity and effect on surface processes, we have systematically analyzed the Late Cenozoic subsidence history, erosion surfaces and magma activity of the Zhu III depression and the Beibuwan Basin. The results show that tectonic subsidence in these basins slow down abnormally in the Late Miocene. Furthermore, since the Late Miocene two erosion surfaces (T1 and T0) have been developed due to local basement uplift events. The T1 and T0 erosion surfaces distributed annularly around the Leigiong volcanic region, and the accumulated erosion thickness in interior is larger, ranging from 100 to 200 m. In addition, since the end of Middle Miocene, local magmatism leaded to arching of overlying strata and sedimentary environment changing. Our analysis show that the observed LVA has limited effect on superficial vertical motion. We speculate that the LVA is small in scale, and might be just a branch of deep much larger low-velocity abnormal structure. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17981]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 作者单位 | 1.Guangzhou Marine Geol Survey, MLR Key Lab Marine Mineral Resources, Guangzhou 510075, Guangdong, Peoples R China 2.South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.CNOOC Ltd, Zhanjiang Branch, Zhanjiang 524057, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Hang,Xu ZiYing,Shi XiaoBin,et al. Late Cenozoic subsidence and sedimentary features of the basins in the northwestern South China Sea : implications for the development of the deep anomalous progress[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(2):587, 603. |
| APA | Liu Hang,Xu ZiYing,Shi XiaoBin,Chen Mei,Ren ZiQiang,&Liu Kai.(2019).Late Cenozoic subsidence and sedimentary features of the basins in the northwestern South China Sea : implications for the development of the deep anomalous progress.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(2),587. |
| MLA | Liu Hang,et al."Late Cenozoic subsidence and sedimentary features of the basins in the northwestern South China Sea : implications for the development of the deep anomalous progress".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.2(2019):587. |
入库方式： OAI收割
来源：南海海洋研究所
浏览0
下载0
收藏0
其他版本
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。