Secondary Cones of the Shatsky Rise and Implications for Late-Stage Volcanism Atop Oceanic Plateaus
文献类型：期刊论文
| 作者 | Zhang Jinchang; Chen Jie; Huang Yanming |
| 刊名 | JOURNAL OF OCEAN UNIVERSITY OF CHINA
 |
| 出版日期 | 2019 |
| 卷号 | 18期号:5页码:1115 |
| 关键词 | Shatsky Rise oceanic plateau secondary cone late-stage volcanism underwater eruption submarine volcano |
| DOI | 10.1007/s11802-019-3986-3 |
| 英文摘要 | Oceanic plateaus are large igneous provinces in the oceans, created by massive underwater eruptions, but their late-stage volcanism is poorly understood. With the addition of recent high-quality bathymetric data to existing data, 286 secondary cones were discovered over Shatsky Rise oceanic plateau. These cones with steeper flank slopes (mean 6.1 degrees +/- 4.4 degrees) and smaller sizes (102-1923 m in height) are morphologically distinct from the plateau, and they are thought to have formed after the main volcanic episodes. Cone height and characteristic height (420 m) are close to seamounts in the Pacific Ocean, whereas greater than those in the Atlantic Ocean. Mean flatness of Shatsky Rise's cones (0.25 +/- 0.20) are similar to that of seamounts in both Pacific and Atlantic Oceans, but notably density in cone distribution (0.56 km(-3)) and their mean slope are significantly lower than those of seamounts in the two oceans. Lower slopes of secondary cones within Shatsky Rise may be explained by higher effusion rates of remaining magma. Although cone formation was expected to have a link to rifting by seafloor spreading, weak relationship between cone orientation and magnetic anomaly pattern implies that the expectation is negative. Moreover, weak correlation between the cone height and depth indicates it is not true that volcanic cones grow taller when they occur closer to the massif summits with thicker oceanic crust, which was suggested as the increase in hydraulic pressure. Cone height and flatness are also not strongly related, implying that remaining magma supply was too limited to foster the cones to critical height. |
| 资助机构 | National Key R&D Program of China [2018YFC0309800]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [91628301, U1606401, 41606069, 41776058]; Natural Science Foundation of Guangdong Province in ChinaNational Natural Science Foundation of Guangdong Province [2017A030313243]; Chinese Academy of SciencesChinese Academy of Sciences [Y4SL021001, QYZDY-SSW-DQC005]; China Association of Marine Affairs [CAMAZD201714] ; National Key R&D Program of China [2018YFC0309800]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [91628301, U1606401, 41606069, 41776058]; Natural Science Foundation of Guangdong Province in ChinaNational Natural Science Foundation of Guangdong Province [2017A030313243]; Chinese Academy of SciencesChinese Academy of Sciences [Y4SL021001, QYZDY-SSW-DQC005]; China Association of Marine Affairs [CAMAZD201714] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18267]  |
| 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 | Zhang Jinchang,Chen Jie,Huang Yanming. Secondary Cones of the Shatsky Rise and Implications for Late-Stage Volcanism Atop Oceanic Plateaus[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2019,18(5):1115, 1122. |
| APA | Zhang Jinchang,Chen Jie,&Huang Yanming.(2019).Secondary Cones of the Shatsky Rise and Implications for Late-Stage Volcanism Atop Oceanic Plateaus.JOURNAL OF OCEAN UNIVERSITY OF CHINA,18(5),1115. |
| MLA | Zhang Jinchang,et al."Secondary Cones of the Shatsky Rise and Implications for Late-Stage Volcanism Atop Oceanic Plateaus".JOURNAL OF OCEAN UNIVERSITY OF CHINA 18.5(2019):1115. |
入库方式： OAI收割
来源：南海海洋研究所
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