南海东部马尼拉俯冲带深部结构新认识*

doi:10.11978/YG2020011

热带海洋学报 ›› 2021, Vol. 40 ›› Issue (3): 25-33.doi: 10.11978/YG2020011CSTR: 32234.14.YG2020011

南海东部马尼拉俯冲带深部结构新认识^*

赵明辉^1,^2,⁶(), 程锦辉^1,^2,⁶, 高金尉³, 孙龙涛^1,², 徐亚⁴, 张佳政^1,², 杜峰⁵

1.中国科学院边缘海与大洋地质重点实验室, 中国科学院南海海洋研究所, 广东广州 511458
2.南方海洋科学与工程广东省实验室, 广东广州 511458
3.中国科学院深海科学与工程研究所, 海南三亚 572000
4.中国科学院油气资源研究重点实验室, 中国科学院地质与地球物理研究所, 北京 100029
5.湖北省地震局, 地震预警湖北省重点实验室, 湖北武汉 430071
6.中国科学院大学, 北京 100049

收稿日期:2020-12-29 修回日期:2021-01-20 出版日期:2021-05-10 发布日期:2021-01-20
通讯作者: 赵明辉
作者简介:赵明辉(1967—), 女, 辽宁省锦州市人, 博士生导师, 研究员, 研究方向为海洋地球物理。email: mhzhao@scsio.ac.cn
基金资助:
国家自然科学基金项目(91958212);国家自然科学基金项目(41730532);国家自然科学基金项目(91428204);国家自然科学基金项目(91858212);南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项(GML2019ZD0204);广东省基金团队项目(2017A030312002)

New development on crustal structures of the Manila subduction in the eastern South China Sea

ZHAO Minghui^1,^2,⁶(), CHENG Jinhui^1,^2,⁶, GAO Jinwei³, SUN Longtao^1,², XU Ya⁴, ZHANG Jiazheng^1,², DU Feng⁵

1. Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 511458, China
2. Guangdong Laboratory of Marine Science and Engineering, Guangzhou 511458, China
3. Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China
4. Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
5. Hubei Key Laboratory of Earthquake Early Warning, Hubei Earthquake Agency, Wuhan 430071, China
6. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2020-12-29 Revised:2021-01-20 Online:2021-05-10 Published:2021-01-20
Contact: ZHAO Minghui
Supported by:
Natural Science Foundation of China(91958212);Natural Science Foundation of China(41730532);Natural Science Foundation of China(91428204);Natural Science Foundation of China(91858212);Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)(GML2019ZD0204);Guangdong Natural Science Foundation research team project(2017A030312002)

摘要/Abstract

摘要：

2015—2018年, 国家自然科学基金重大研究计划“南海深海过程演变”的重点支持项目“南海东部马尼拉俯冲带深部结构探测与研究”以马尼拉俯冲带为研究重点, 从深部地球物理的角度探索南海形成演化史与运行规律。项目执行期间, 在国家基金委共享航次协助下, 先后开展和参与5次综合地球物理探测, 共投放海底地震仪(Ocean Bottom Seismometer, OBS)台站73台次, 海底电磁仪(Ocean Bottom ElectroMagnetometers, OBEM)仪器5台次, 累积放炮达13872炮, 成功获得了60台OBS数据和5台OBEM数据。同时, 取得了一系列创新性研究成果: (1)基于人工地震探测及天然地震层析成像结果, 确定南海东北部的地壳属性为受到张裂后期岩浆活动影响的减薄陆壳(12~15km), 划分了南海北部陆缘洋陆边界(Continent-Ocean Boundary, COB); (2)根据多道地震反射剖面, 划分了马尼拉俯冲带北部增生楔前缘的精细结构; (3)圈定了南海停止扩张时洋壳范围; (4)初步构建了南海与菲律宾海板块构造演化模型。本项目为重大研究计划“南海深海过程演变”核心科学问题(海底扩张的年代与过程)提供了实质性的证据, 同时为南海构造演化生命史的“骨架”提供了重要的基础数据, 具有深远的科学意义。

关键词: 马尼拉俯冲带, 深部结构, 海底地震仪, 洋陆边界, 南海东部

Abstract:

The key project of "Deep Structure survey and study on the Manila subduction zone in the eastern South China Sea (SCS)" was funded from the major research program "Deep Sea Processes and Evolution of the SCS" of the National Natural Science Foundation of China (NSFC) during 2015-2018. This project focuses on the Manila subduction zone to resolve the formation and evolution of the SCS using geological and geophysical methods. Five comprehensive geophysical surveys were successively carried out during the project period with the help of NSFC open cruises. A total of 73 Ocean Bottom Seismometer (OBS) stations and five Ocean Bottom ElectroMagnetometers (OBEM) have been deployed; and 13,872 airgun shots were fired. Totally 60 OBSs and five OBEMs have been recovered, and a large amount of data have been acquired. At the same time, a series of innovative results have been obtained. (1) The crust of the northeastern SCS has been determined as a 12-15 km thinned continental crust affected by volcanic activities after post-rifting phase based on the results of active seismic and earthquake tomography; and its continent-ocean boundary (COB) was also determined. (2) According to the multi-channel seismic reflection profile, the detailed structure of the accretionary wedge front of the northern Manila subduction zone was delineated. (3) The SCS oceanic crust domain when the seafloor spreading stopped has been outlined. (4) The tectonic evolution model of the SCS and the Philippine Sea Plate (PSP) was constructed. This project not only contributes substantially to the key scientific question (age and process of seafloor spreading) of the major research program "Deep Sea Processes and Evolution of the SCS," but also provides important basic data for the "skeleton" of the tectonic evolution and life history of the SCS from seafloor spreading to plate subduction, which has a far-reaching scientific significance.

Key words: Manila subduction zone, deep structure, Ocean Bottom Seismometers, Continent-Ocean boundary, eastern South China Sea

中图分类号:

P738

赵明辉, 程锦辉, 高金尉, 孙龙涛, 徐亚, 张佳政, 杜峰. 南海东部马尼拉俯冲带深部结构新认识^*[J]. 热带海洋学报, 2021, 40(3): 25-33.

ZHAO Minghui, CHENG Jinhui, GAO Jinwei, SUN Longtao, XU Ya, ZHANG Jiazheng, DU Feng. New development on crustal structures of the Manila subduction in the eastern South China Sea[J]. Journal of Tropical Oceanography, 2021, 40(3): 25-33.

图/表 6

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参考文献 36

[1]	高金尉, 吴时国, 姚永坚, 等, 2018. 马尼拉俯冲带北段增生楔前缘构造变形和精细结构[J]. 地球物理学报, 61(7):2845-2858.
	GAO JINWEI, WU SHIGUO, YAO YONGJIAN, et al, 2018. Tectonic deformation and fine structure of the frontal accretionary wedge, northern Manila subduction zone[J]. Chinese Journal of Geophysics, 61(7):2845-2858 (in Chinese with English abstract).
[2]	黄奇瑜, 2017. 台湾岛的年龄[J]. 中国科学: 地球科学, 47(4):394-405.
	HUANG QIYU, 2017. Geological ages of Taiwan stratigraphy and tectonic events[J]. Scientia Sinica Terrae, 47(4):394-405 (in Chinese with English abstract).
[3]	李春峰, 周祖翼, 李家彪, 等, 2007. 台湾岛南部海域的前碰撞构造地球物理特征[J]. 中国科学(D辑: 地球科学), 37(5):649-659.
[4]	李家彪, 金翔龙, 阮爱国, 等, 2004. 马尼拉海沟增生楔中段的挤入构造[J]. 科学通报, 49(10):1000-1008.
[5]	林间, 徐敏, 周志远, 等, 2017. 全球俯冲带大洋钻探进展与启示[J]. 地球科学进展, 32(12):1253-1266.
	LIN JIAN, XU MIN, ZHOU ZHIYUAN, et al, 2017. Ocean drilling investigation of the global subduction processes[J]. Advances in Earth Science, 32(12):1253-1266 (in Chinese with English abstract).
[6]	刘思青, 赵明辉, 张佳政, 等, 2017. 马尼拉海沟俯冲带前缘(21°N)海底地震仪数据处理初步成果[J]. 热带海洋学报, 36(2):60-69.
	LIU SIQING, ZHAO MINGHUI, ZHANG JIAZHENG, et al, 2017. OBS seismic data processing of the Manila Trench subduction zone (21°N) and some preliminary results[J]. Journal of Tropical Oceanography, 36(2):60-69 (in Chinese with English abstract).
[7]	任昱, 赵明辉, 张佳政, 等, 2020. 宽频带海底地震仪的地震重定位对马尼拉俯冲板片形态的约束[J]. 地球物理学报, 63(5):1927-1937.
	REN YU, ZHAO MINGHUI, ZHANG JIAZHENG, et al, 2020. Constraint on the shape of the Manila subduction slab from earthquake relocation using long-term ocean bottom seismometer data[J]. Chinese Journal of Geophysics, 63(5):1927-1937 (in Chinese with English abstract).
[8]	尚继宏, 2008. 马尼拉海沟中北段俯冲带特征对比及区域构造动力学研究[D]. 青岛: 中国科学院研究生院(海洋研究所).
	SHANG JIHONG, 2008. Tectonic dynamics research and subducting characteristics comparison between middle and northern part of Manila subducting belt[D]. Qingdao: Graduate University of Chinese Academy of Science (The Institute of Oceanology)(in Chinese with English abstract).
[9]	汪品先, 2009. 南海——我国深海研究的突破口[J]. 热带海洋学报, 28(3):1-4.
	WANG PINXIAN, 2009. Toward scientific breakthrough in the South China Sea[J]. Journal of Tropical Oceanography, 28(3):1-4 (in Chinese with English abstract).
[10]	汪品先, 2012. 追踪边缘海的生命史: “南海深部计划”的科学目标[J]. 科学通报, 57(20):1807-1826.
	WANG PINXIAN, 2012. Tracing the life history of a marginal Sea——On the “South China Sea Deep” research program[J]. Chinese Science Bulletin, 57(24):3093-3114.
[11]	汪品先, 2020. 南海深部过程的探索[J]. 科技导报, 38(18):6-20.
	WANG PINXIAN, 2020. Exploring the deep sea processes in the South China Sea[J]. Science & Technology Review, 38(18):6-20 (in Chinese with English abstract).
[12]	吴时国, 刘文灿, 2004. 东亚大陆边缘的俯冲带构造[J]. 地学前缘, 11(3):15-22.
	WU SHIGUO, LIU WENCAN, 2004. Tectonics of subduction zone in the East Asia continental margin[J]. Earth Science Frontiers, 11(3):15-22 (in Chinese with English abstract).
[13]	张佳政, 丘学林, 赵明辉, 等, 2018. 南海巴士海峡三维OBS探测的异常数据恢复[J]. 地球物理学报, 61(4):1529-1538.
	ZHANG JIAZHENG, QIU XUELIN, ZHAO MINGHUI, et al, 2018. Abnormal data retrieval of three-dimensional OBS survey at the Bashi Channel area of the South China Sea[J]. Chinese Journal of Geophysics, 61(4):1529-1538 (in Chinese with English abstract).
[14]	赵明辉, 贺恩远, 孙龙涛, 等, 2016. 马里亚纳海沟俯冲带深地震现状对马尼拉海沟俯冲带的研究启示[J]. 热带海洋学报, 35(1):48-60.
	ZHAO MINGHUI, HE ENYUAN, SUN LONGTAO, et al, 2016. Research on deep seismic structures of Mariana Trench subduction zone and its inspiration for Manila Trench subduction zone[J]. Journal of Tropical Oceanography, 35(1):48-60 (in Chinese with English abstract).
[15]	赵明辉, 王强, 杨富东, 等, 2021. 花东海盆综合地震探测及其重要的构造意义[J]. 地球科学, 46(1):359-368.
	ZHAO MINGHUI, WANG QIANG, YANG FUDONG, et al, 2021. Seismic survey in Huatung basin and its tectonic significance[J]. Earth Science, 46(1):359-368 (in Chinese with English abstract).
[16]	BRIAIS A, PATRIAT P, TAPPONNIER P, 1993. Updated interpretation of magnetic anomalies and seafloor spreading stages in the south China Sea: Implications for the Tertiary tectonics of Southeast Asia[J]. Journal of Geophysical Research: Solid Earth, 98(B4):6299-6328.
[17]	DING WEIWEI, SUN ZHEN, MOHN G, et al, 2020. Lateral evolution of the rift-to-drift transition in the South China Sea: Evidence from multi-channel seismic data and IODP Expeditions 367&368 drilling results[J]. Earth and Planetary Science Letters, 531:115932. doi: 10.1016/j.epsl.2019.115932
[18]	DOO W B, HSU S K, LO C L, et al, 2015. Gravity anomalies of the active mud diapirs off southwest Taiwan[J]. Geophysical Journal International, 203(3):2089-2098. doi: 10.1093/gji/ggv430
[19]	DU FENG, ZHANG JIAZHENG, YANG FUDONG, et al, 2018. Combination of Least Square and Monte Carlo Methods for OBS Relocation in 3D Seismic Survey Near Bashi Channel[J]. Marine Geodesy, 41(5):494-515. doi: 10.1080/01490419.2018.1479993
[20]	HALL R, 2002. Cenozoic geological and plate tectonic evolution of SE Asia and the SW Pacific: Computer-based reconstructions, model and animations[J]. Journal of Asian Earth Sciences, 20(4):353-431. doi: 10.1016/S1367-9120(01)00069-4
[21]	HE ENYUAN, ZHAO MINGHUI, QIU XUELIN, et al, 2016. Crustal structure across the post-spreading magmatic ridge of the East Sub-basin in the South China Sea: Tectonic significance[J]. Journal of Asian Earth Sciences, 121:139-152. doi: 10.1016/j.jseaes.2016.03.003
[22]	HSU S K, YEH Y C, DOO W B, et al, 2004. New bathymetry and magnetic lineations identifications in the northernmost South China Sea and their tectonic implications[J]. Marine Geophysical Research, 25(1-2):29-44. doi: 10.1007/s11001-005-0731-7
[23]	KORENAGA J, HOLBROOK W S, KENT G M, et al, 2000. Crustal structure of the southeast Greenland margin from joint refraction and reflection seismic tomography[J]. Journal of Geophysical Research: Solid Earth, 105(B9):21591-21614.
[24]	LARSEN H C, MOHN G, NIRRENGARTEN M, et al, 2018. Rapid transition from continental breakup to igneous oceanic crust in the South China Sea[J]. Nature Geoscience, 11(10):782-789. doi: 10.1038/s41561-018-0198-1
[25]	LEE Y H, BYRNE T, WANG W H, et al, 2015. Simultaneous mountain building in the Taiwan orogenic belt[J]. Geology, 43(5):451-454. doi: 10.1130/G36373.1
[26]	LEI CHAO, REN JIANYE, PANG XIONG, 2019. Rift structures and its related unconformities on and adjacent the Dongsha Rise: insights into the nature of the high-velocity layer in the northern South China Sea[J]. Marine Geophysical Research, 40(2):99-110. doi: 10.1007/s11001-019-09381-x
[27]	LIU SIQING, ZHAO MINGHUI, SIBUET J C, et al, 2018. Geophysical constraints on the lithospheric structure in the northeastern South China Sea and its implications for the South China Sea geodynamics[J]. Tectonophysics, 742-743:101-119. doi: 10.1016/j.tecto.2018.06.002
[28]	LUDWIG W J, KUMAR N, HOUTZ R E, 1979. Profiler-sonobuoy measurements in the South China Sea Basin[J]. Journal of Geophysical Research: Solid Earth, 84(B7):3505-3518.
[29]	SIBUET J C, YEH Y C, LEE C S, 2016. Geodynamics of the South China Sea[J]. Tectonophysics, 692:98-119. doi: 10.1016/j.tecto.2016.02.022
[30]	SUN ZHEN, LIN JIAN, QIU NING, et al, 2019. The role of magmatism in the thinning and breakup of the South China Sea continental margin[J]. National Science Review, 6(5):871-876. doi: 10.1093/nsr/nwz116
[31]	WU J, SUPPE J, LU RENQI, et al, 2016. Philippine Sea and East Asian plate tectonics since 52 Ma constrained by new subducted slab reconstruction methods[J]. Journal of Geophysical Research: Solid Earth, 121(6):4670-4741. doi: 10.1002/2016JB012923
[32]	XU YA, YOU QINGYU, HUANG SONG, et al, 2017. Marine electromagnetic experiments in the South China Sea[C]// International Geophysical Conference. Qingdao, China: SEG: 917-919.
[33]	ZELT C A, SMITH R B, 1992. Seismic traveltime inversion for 2-D crustal velocity structure[J]. Geophysical Journal International, 108(1):16-34. doi: 10.1111/gji.1992.108.issue-1
[34]	ZHAO MINGHUI, HE ENYUAN, SIBUET J C, et al, 2018. Postseafloor spreading volcanism in the Central East South China Sea and its formation through an extremely thin oceanic crust[J]. Geochemistry, Geophysics, Geosystems, 19(3):621-641. doi: 10.1002/ggge.v19.3
[35]	ZHAO MINGHUI, SIBUET J C, WU J, 2019. Intermingled fates of the South China Sea and Philippine Sea plate[J]. National Science Review, 6(5):886-890. doi: 10.1093/nsr/nwz107
[36]	ZHOU DI, RU KE, CHEN HANZONG, 1995. Kinematics of Cenozoic extension on the South China Sea continental margin and its implications for the tectonic evolution of the region[J]. Tectonophysics, 251(1-4):161-177. doi: 10.1016/0040-1951(95)00018-6

南海东部马尼拉俯冲带深部结构新认识^*

New development on crustal structures of the Manila subduction in the eastern South China Sea

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