| 南海东北部深水区泥火山的分布与特征 |
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| 引用本文： | 耿明会, 宋海斌, 关永贤, 张如伟, 刘伯然. 南海东北部深水区泥火山的分布与特征[J]. 海洋地质前沿, 2019, 35(10): 1-10. doi: 10.16028/j.1009-2722.2019.10001 |
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| 作者姓名： | 耿明会 宋海斌 关永贤 张如伟 刘伯然 |
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| 作者单位： | 1.中国地质调查局广州海洋地质调查局，广州 510760; 2.同济大学海洋与地球科学学院，上海 200092; 3.自然资源部第三海洋研究所，厦门 361005 |
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| 基金项目： | 国家重点研发计划;“全球变化与海气相互作用”专项 |
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| 摘 要： | 前人在南海东北部发现许多与天然气渗漏相关的规模大小不一的泥火山。受数据类型和分辨率所限，这些泥火山规模大小存在数据断层。利用多波束地形数据，在研究区域新发现了27个直径在300~1 170 m、高度在5~120 m范围内的泥火山，并且这些泥火山大多发育在海底侵蚀作用强烈的峡谷中。南海东北部海底地层中泥质和烃类来源充足，较快的沉积速率构成的超压体系以及强烈的挤压构造应力作用，使得含气高压泥浆上涌，穿透峡谷较薄的沉积层，这些黏性泥质在海底表面堆积形成了泥火山。
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| 关 键 词： | 南海东北部 泥火山 天然气渗漏 深水 海底峡谷 |
| 收稿时间： | 2019-04-03 |
THE DISTRIBUTION AND CHARACTERISTICS OF MUD VOLCANOES IN THE NORTHEASTERN SOUTH CHINA SEA |
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| GENG Minghui, SONG Haibin, GUAN Yongxian, ZHANG Ruwei, LIU Boran. THE DISTRIBUTION AND CHARACTERISTICS OF MUD VOLCANOES IN THE NORTHEASTERN SOUTH CHINA SEA[J]. Marine Geology Frontiers, 2019, 35(10): 1-10. doi: 10.16028/j.1009-2722.2019.10001 |
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| Authors: | GENG Minghui SONG Haibin GUAN Yongxian ZHANG Ruwei LIU Boran |
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| Affiliation: | 1.Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 510760, China; 2.School of Ocean and Earth Science, Tongji University, Shanghai 200092, China; 3.Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China |
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| Abstract: | Mud volcanoes in different sizes are found associated with gas seepages in the northeastern South China Sea. Restricted by types and low resolutions of the data, there are gaps in the size of mud volcanoes. Using multi-beam bathymetry data, we find 27 new mud volcanoes in the study area 5~120 m in heights with diameters between 300~1 170 m. Most of them are found in the canyons of heavy erosion. There are enough mud and gas as sources, and the overpressure system due to the joint actions of rapid sedimentation rate and tectonic compression forced the gas-rich mud to pierce into the thin canyon deposits and form mud volcanoes. |
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| Keywords: | northeastern South China Sea mud volcanoes gas seepages deep water submarine canyon |
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