检索
E-mail
RSS

作者投稿 主编审稿 专家审稿 远程编辑

热带海洋学报 >

2016 , Vol. 35 >Issue 5: 88 - 96

DOI: https://doi.org/10.11978/2015138

海洋地球物理学

东沙西南海区泥火山的分布及其物质来源层位*

  • 赵旭 ,
  • 阎贫 ,
  • 王彦林 ,
  • 郑红波
展开
  • 1. 中国科学院南海海洋研究所, 中国科学院边缘海地质重点实验室, 广东 广州 510301;; 2. 中国科学院大学, 北京 100049
赵旭(1990—), 男, 山东省聊城市人, 硕士生, 从事海洋地质和海洋地球物理研究。E-mail: zhaoxu@scsio.ac.cn

收稿日期: 2015-11-12

  网络出版日期: 2016-09-22

基金资助

基金项目：国家自然科学基金资助项目(41376062、91328205、41349908); 海洋地质保障工程项目（GZH20110205）

收起

The distribution and provenance strata of mud volcanoes in the waters southwest of the Dongsha Islands

  • ZHAO Xu ,
  • YAN Pin ,
  • WANG Yanlin ,
  • ZHENG Hongbo
Expand
  • 1. Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2015-11-12

  Online published: 2016-09-22

Supported by

Foundation item: Supported by the National Natural Science Foundation of China (41376062, 91328205, 41349908); Security Project of Marine Geology (GHZ20110205)

Fold

摘要

早期的多道地震和浅剖测线数据表明东沙西南海域可能存在一些泥火山。2014年在该海域加密了多道地震测线和浅剖测线。通过对新采数据的处理, 在多道地震剖面中发现了大量反映泥火山存在的丘形隆起、喷发凹槽及反射空白带等特征; 在浅剖剖面上发现了指示泥火山存在的丘状构造、局部海底反射加强以及气体羽等现象。对比分析相邻的多道和浅剖剖面, 发现该区存在大量泥火山, 沿NWW—SEE方向呈带状分布。其中最大泥火山长度大于15km, 宽约8km, 高约285m。泥火山坡度较大, 两翼倾角在5.5°~15.9°之间。剖面上显示有些泥火山对应的构造形变及反射空白带至少延伸到海底以下5.5km深度, 经过与附近海区地震剖面解释成果的对比, 推断泥火山物质来源层位为中生界。

关键词： 东沙西南; 泥火山; 多道地震; 浅剖; 中生界

本文引用格式

赵旭 , 阎贫 , 王彦林 , 郑红波 . 东沙西南海区泥火山的分布及其物质来源层位*[J]. 热带海洋学报, 2016 , 35(5) : 88 -96 . DOI: 10.11978/2015138

Abstract

A few mud volcanoes were found in the Dongsha waters according to reconnaissance multi-channel seismic (MCS) and Chirp sub-bottom profiles. Denser MCS and sub-bottom survey lines were run in the area in 2014. Blanking zones under submarine mounds and rimmed depression were revealed by the MCS section, while locally enhanced seafloor reflection and gas plumes, by Chirp sub-bottom data. Correlation of MCS profiles and sub-bottom profiles shows these mud volcanoes sit in the NWW-SEE. The largest mud volcano there is ~15 km long, ~8 km wide, and ~285 m high. The steep slopes of mud volcanoes ranged from 5.5° to 15.9°. Correlated with the interpreted MCS profiles nearby, the provenance strata of some mud volcanoes there is of Mesozoic, considering that the tectonic deformation and reflection blanking zone under mud volcanoes extends at least 5.5 km below seafloor.

Key words： southwest of the Dongsha Islands; mud volcano; multi-channel seismic; sub-bottom profile; Mesozoic

参考文献

1 陈森, 2015. Chirp浅剖数据声学反演在东沙群岛西南泥火山区水合物探测中的应用[D]. 广州: 中国科学院南海海洋研究所: 1-60. CHEN SEN, 2015. Application of inversion of the Chirp sub-bottom data to natural gas hydrates detection in mud volcano area in southwest of Dongsha Islands[D]. Guangzhou: South China Sea Institute of Oceanology, CAS: 1-60 (in Chinese).
2 陈森, 阎贫, 王彦林, 2016. 东沙群岛西南泥火山区Chirp浅剖数据的海底物性反演[J]. 地球科学: 中国地质大学学报, 41(3): 425-432. CHEN SEN, YAN PIN, WANG YANLIN, 2016. Inversion of the physical properties of the seabed using Chirp sub-bottom data in Mud Volcanoes field of the Southwest of Dongsha Islands[J]. Earth Science: Journal of China University of Geosciences, 41(3): 425-432 (in Chinese).
3 陈忠, 杨华平, 黄奇瑜, 等, 2008. 南海东沙西南海域冷泉碳酸盐岩特征及其意义[J]. 现代地质, 22(3): 382-389. CHEN ZHONG, YANG HUAPING, HUANG QIYU, et al, 2008. Diagenetic Environment and Implication of Seep Carbonate precipitations from the Southwestern Dongsha Area, South China Sea[J]. Geoscience, 22(3): 382-389 (in Chinese).
4 郝沪军, 林鹤鸣, 杨梦雄, 等, 2001. 潮汕坳陷中生界——油气勘探的新领域[J]. 中国海上油气(地质), 15(3): 157-162. HAO HUJUN, LIN HEMING, YANG MENGXIONG, et al, 2001. The mesozoic in Chaoshan depression: a new domain of petroleum exploration[J]. China Offshore Oil and Gas (Geology), 15(3): 157-162 (in Chinese).
5 郝沪军, 汪瑞良, 张向涛, 等, 2004. 珠江口盆地东部海相中生界识别及分布[J]. 中国海上油气, 16(2): 84-88. HAO HUJUN, WANG RUILIANG, ZHANG XIANGTAO, et al, 2004. Mesozoic marine sediment identification and distribution in the eastern Pearl River Mouth basin[J]. China Offshore Oil and Gas, 16(2): 84-88 (in Chinese).
6 何家雄, 夏斌, 张树林, 等, 2006. 莺歌海盆地泥底辟成因、展布特征及其与天然气运聚成藏关系[J]. 中国地质, 33(6): 1336-1344. HE JIAXIONG, XIA BIN, ZHANG SHULIN, et al, 2006. Origin and distribution of mud diapirs in the Yinggehai basin and their relation to the migration and accumulation of natural gas[J]. Geology in China, 33(6): 1336-1344 (in Chinese).
7 何家雄, 祝有海, 瓮荣南, 等, 2010. 南海北部边缘盆地泥底辟及泥火山特征及其与油气运聚关系[J]. 地球科学：中国地质大学学报, 35(1): 75-86. HE JIAXIONG, ZHU YOUHAI, WENG RONGNAN, et al, 2010. Characters of north-west mud diapirs volcanoes in South China Sea and relationship between them and accumulation and migration of oil and gas[J]. Earth Science: Journal of China University of Geosciences, 35(1): 75-86 (in Chinese).
8 邵磊,尤洪庆,郝沪军,等,2007. 南海东北部中生界岩石学特征及沉积环境[J]. 地质论评, 53(2): 164-169. SHAO LEI, YOU HONGQING, HAO HUJUN, et al, 2007. Petrology and depositional environments of Mesozoic strata in the Northeastern South China Sea[J]. Geological Review, 53(2): 164-169 (in Chinese)
9 苏乃容, 曾麟, 李平鲁, 1995. 珠江口盆地东部中生代凹陷地质特征[J]. 中国海上油气(地质), 9(4): 228-236. SU NAIRONG, ZENG LIN, LI PINGLU, 1995. Geological features of Mesozoic sags in the eastern part of Pearl River Mouth basin[J]. China Offshore Oil and Gas (Geology), 9(4): 228-236 (in Chinese).
10 向荣, 方力, 陈忠, 等, 2012. 东沙西南海域表层底栖有孔虫碳同位素对冷泉活动的指示[J]. 海洋地质与第四纪地质, 32(4): 17-24. XIANG RONG, FANG LI, CHEN ZHONG, et al, 2012. Carbon isotope of benthic foraminifera and its implications for cold seepage in the southwestern area off Dongsha Islands, South China Sea[J]. Marine Geology & Quaternary Geology, 32(4): 17-24 (in Chinese).
11 阎贫, 王彦林, 郑红波, 等, 2014. 东沙群岛西南海区泥火山的地球物理特征[J]. 海洋学报, 36(7): 142-148. YAN PIN, WANG YANLIN, ZHENG HONGBO, et al, 2014. Geophysical features of mud volcanoes in the waters southwest of the Dongsha Islands[J]. Acta Oceanologica Sinica, 36(7): 142-148 (in Chinese).
12 尹希杰, 周怀阳, 杨群慧, 等, 2008. 南海北部甲烷渗漏活动存在的证据: 近底层海水甲烷高浓度异常[J]. 海洋学报, 30(6): 69-75. YIN XIJIE, ZHOU HUAIYANG, YANG QUNHUI, et al, 2008. The evidence for the existence of methane seepages in the northern South China Sea: abnormal high methane concentration in bottom waters[J]. Acta Oceanologica Sinica, 30(6): 69-75 (in Chinese).
13 CHEN JIANGXIN, SONG HAIBIN, GUAN YONGXIAN, et al, 2015. Morphologies, classification and genesis of pockmarks, mud volcanoes and associated fluid escape features in the northern Zhongjiannan Basin, South China Sea[J]. Deep Sea Research Part Ⅱ: Topical Studies in Oceanography, 122: 106-117.
14 CHEN SONGCHUEN, HSU SHUKUN, WANG YUNSHUEN, et al, 2014. Distribution and characters of the mud diapirs and mud volcanoes off southwest Taiwan[J]. Journal of Asian Earth Sciences, 92: 201-214.
15 DIMITROV L I, 2002. Mud volcanoes-the most important pathway for degassing deeply buried sediments[J]. Earth-Science Reviews, 59(1/4): 49-76.
16 DIMITROV L I, 2003. Mud volcanoes—a significant source of atmospheric methane[J]. Geo-Marine Letters, 23(3/4): 155-161.
17 HAO HUJUN, ZHANG XIANGTAO, YOU HONGQING, et al, 2009. Characteristics and hydrocarbon potential of Mesozoic strata in eastern Pearl River Mouth Basin, Northern South China Sea[J]. Journal of Earth Science, 20(1): 117-123.
18 HU WEIJIAN, HAO TIANYAO, JIANG WEIWEI, et al, 2015. An integrated geophysical study on the Mesozoic strata distribution and hydrocarbon potential in the South China Sea[J]. Journal of Asian Earth Sciences, 111: 31-43.
19 MILKOV A V, 2000. Worldwide distribution of Submarine mud volcanoes and associated gas hydrates[J]. Marine Geology, 167(1/2): 29-42.
20 PRIOR D B, DOYLE E H, Kaluza M J, 1989. Evidence for sediment eruption on deep sea floor, Gulf of Mexico[J]. Science, 243(4890): 517-519.
21 WOODSIDE J M, IVANOV M K, LIMINOV A F, 1997. Neotectonics and fluid flow through seafloor sediments in the Eastern Mediterranean and Black Seas[M]. Intergovernmental Oceanographic Commission Technical Series, 48. UNESCO.
22 YAN PIN, WANG LIAOLIANG, WANG YANLIN, 2014. Late Mesozoic compressional folds in Dongsha Waters, the northern margin of the South China Sea[J]. Tectonophysics, 615-616: 213-223.
Options
文章导航

/

〈 〉