Oligocene biogenic siliceous deposits on the slope of the northern South China Sea
文献类型：期刊论文
| 作者 | Wang, RJ ; Fang, DY ; Shao, L ; Chen, MH ; Xia, PF ; Qi, JY |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2001 |
| 卷号 | 44期号:10页码:912-918 |
| 关键词 | biogenic silica accumulation North Atlantic deep water fractionation silica preservation Oligocene the northern South China Sea |
| ISSN号 | 1006-9313 |
| 通讯作者 | Wang, RJ, Tongji Univ, Minist Educ, Key Lab Marine Geol, Shanghai 200092, Peoples R China |
| 中文摘要 | The abundance of radiolarian, diatom and sponge spicule and H4SiO4 in pore-waters increase abruptly at the boundary between Early and Late Oligocene (about 30-27.5 Ma) at Site 1148 of the northern South China Sea (SCS), indicating high biogenic silica accumulation during this time. At the same time (about 30-28 Ma), high biogenic silica deposition occurred in the central equatorial Pacific. Comparison of the biogenic silica accumulation at Site 1148 of the SCS with that at Site 929 of the Atlantic verifies that the biogenic silica accumulation between the low latitude Pacific and Atlantic oceans expresses the evident relationship of compensation during the Oligocene. Biogenic silica accumulation decreased in the Atlantic, whereas it increased in the Pacific at the boundary between the Early and Late Oligocene. It resulted from the formation and presence of North Atlantic deep water (NADW) in the Atlantic basin, indicating an intensive basin-basin fractionation. XRD analysis and SEM observation of the samples from Site 1148 demonstrate that most of radiolarian, diatom and sponge spicule have suffered from dissolution and reprecipitation, suggested by the opal-A-->opal-CT transformation. As a result of the transformation, porosity increased, but dry and bulk densities decreased, reflecting the consequence of diagenesis on the physical property of sediment. |
| 学科主题 | Geosciences, Multidisciplinary |
| 收录类别 | SCI |
| 原文出处 | SCIENCE CHINA PRESS |
| WOS记录号 | WOS:000173455400007 |
| 公开日期 | 2011-07-03 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/4682]  |
| 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, RJ,Fang, DY,Shao, L,et al. Oligocene biogenic siliceous deposits on the slope of the northern South China Sea[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2001,44(10):912-918. |
| APA | Wang, RJ,Fang, DY,Shao, L,Chen, MH,Xia, PF,&Qi, JY.(2001).Oligocene biogenic siliceous deposits on the slope of the northern South China Sea.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,44(10),912-918. |
| MLA | Wang, RJ,et al."Oligocene biogenic siliceous deposits on the slope of the northern South China Sea".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 44.10(2001):912-918. |
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。