Temporal and spatial migration of rift-terminate unconformity surfaces and their tectonic significance in the eastern part of Nansha Block
文献类型：期刊论文
| 作者 | Wang LiJie; Yao YongJian; Li XueJie; Yang ChuPeng; Lu YingXin; Xu Xing; Sun Zhen |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2019 |
| 卷号 | 62期号:12页码:4766 |
| 关键词 | Eastern part of Nansha block Rift-terminate unconformity surfaces Nido limestone Temporal and spatial migration |
| DOI | 10.6038/ejg2019M0349 |
| 英文摘要 | The timing, naming, and distribution of the Cenozoic unconformities affecting the sediment rocks and have a great significance to understand the tectonic evolution of the South China Sea. Due to the complexity of geological processes and the different data coverage, it is complicated and controversial to divide and date the major unconformities in the eastern part of Nansha Block, southeastern of the South China Sea. In this work, all kinds of stratigraphic systems proposed in the literature were compared and summarized, and nearly ten thousands km 2D seismic data were interpreted, and the seismic reflection characteristics about key tectonic unconformities were identified. Three major rift-terminate unconformity surfaces were divided and dated through biostratigraphy analysis and well-profile comparison, and they include T7, T6, and T5. On the seismic profile, the rift-terminate unconformity surfaces are characterized by uplift erosion, tilted fault block, forebulge development, detachment slippage, cessation of rifting, and sediment environment mutation. The spatial distribution of these unconformities is band-like, and they formed early in the northeast and late in the southwest. Based on analyzing the tectonic evolution history, stratigraphic lithology, and sedimentary environment, the different causal mechanisms of the rift-terminate unconformity surfaces were considered to lithospheric breakup, oceanic ridge jumps, over-thrusted, continental collisions, and the stopping of seafloor spreading in the South China Sea. The rift-terminate unconformity surfaces were related to a single or multiple tectonic-stratigraphic responses of the tectonic events at different tectonic locations. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18246]  |
| 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 | Wang LiJie,Yao YongJian,Li XueJie,et al. Temporal and spatial migration of rift-terminate unconformity surfaces and their tectonic significance in the eastern part of Nansha Block[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(12):4766, 4781. |
| APA | Wang LiJie.,Yao YongJian.,Li XueJie.,Yang ChuPeng.,Lu YingXin.,...&Sun Zhen.(2019).Temporal and spatial migration of rift-terminate unconformity surfaces and their tectonic significance in the eastern part of Nansha Block.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(12),4766. |
| MLA | Wang LiJie,et al."Temporal and spatial migration of rift-terminate unconformity surfaces and their tectonic significance in the eastern part of Nansha Block".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.12(2019):4766. |
入库方式： OAI收割
来源：南海海洋研究所
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