Sedimentary response to volcanic activity in the Okinawa Trough since the last deglaciation
文献类型：期刊论文
| 作者 | Jiang Fuqing; Li Anchun; Li Tiegang
|
| 刊名 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2010 |
| 卷号 | 28期号:1页码:171-182 |
| 关键词 | sediment ash layer last deglaciation Okinawa Trough |
| 英文摘要 | To investigate the relationship between volcanic activity and sediment record on regional and temporal scales, 158 surface sediment samples were collected from the East China Sea Shelf to the northern Okinawa Trough (OT), and two cores recovered in the northern and southern OT, respectively. Mineralogy, grain-size, and geochemical analyses of those samples show that: 1) volcanic glass, volcanic-type pyroxene, hypersthenes, and magnetite increase in sediment influenced by volcanic activity; 2) sediment grain sizes (and also silt content) increase in ash layers; and 3) the contents of Na(2)O and Zr are higher, while terrigenous elements, e. g., TFe(2)O(3) and K(2)O, and biogenous compositions, e. g., CaO and Sr, are relatively lower in ash layers than those of non-ash layers. The distribution of volcanic ash has three distinguishing characteristics: 1) volcanic ash is more abundant in the northern and central OT than the southern OT; 2) volcanic ash increases from continental shelf to the trough; 3) the sediment during the last 12 000 a suggests stronger volcanic events than during 15 000-12 000 a. The eruptive locations, frequency, and volume of calderas are among the most important factors controlling the distributions of volcanic ash. In addition, the main Kuroshio warm current that extends northward probably impeded the diffusion of volcanic ash to the west and south in the OT. However, a southward current probably carried some volcanic ash toward southern OT. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000275654100022 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/32786]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 作者单位 | Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang Fuqing,Li Anchun,Li Tiegang. Sedimentary response to volcanic activity in the Okinawa Trough since the last deglaciation[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2010,28(1):171-182. |
| APA | Jiang Fuqing,Li Anchun,&Li Tiegang.(2010).Sedimentary response to volcanic activity in the Okinawa Trough since the last deglaciation.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,28(1),171-182. |
| MLA | Jiang Fuqing,et al."Sedimentary response to volcanic activity in the Okinawa Trough since the last deglaciation".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 28.1(2010):171-182. |
入库方式： OAI收割
来源：海洋研究所
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