A PRELIMINARY ANALYSIS OF PRE-CENOZOIC TECTONIC DEFORMATION OF ZHONGSHA-XISHA BLOCK IN SOUTH CHINA SEA
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摘要:
为确定南海西部的中—西沙地块是否存在前新生代地层与构造，对研究区内多道反射地震剖面资料进行了地层-构造解释，并结合围区钻井、拖网等岩石地层资料，在研究区北部发现了前新生代地层-构造变形形迹。运用回剥法、去断层恢复法和地质反序法对前新生代地层的构造变形进行了古恢复。结果表明，研究区的地层可划分为上、中、下三套构造层，其中属于前新生界的下构造层可见褶皱、逆冲等挤压构造样式，前新生代末期，其构造形态表现为一系列连续的宽缓褶皱，结合断层逆冲推覆方向可判断其主要挤压应力来自于东南方向，并推测该挤压作用与古南海的扩张有关。
Abstract:Multi-channel seismic data are interpreted with the support of drilling and trawling samples from surrounding areas to identify Pre-Cenozoic strata in the middle-west block of the western South China Sea. Results suggest that the Pre-Cenozoic strata do occur in the north of the study area. Upon this fact, the tectonic deformation of the Pre-Cenozoic strata is reconstructed using the back-stripping method, the fault-recovery method and the antitone structural analysis method. The strata can be divided into upper, middle and lower structural layers in the study area. Compressive structures, such as folds and thrusts, are found in the lower structure layer. By the end of Pre-Cenozoic, the region was suffered from continuous gently folding. Combined with the fault thrust direction, it is concluded that the main compressive stress came from the southeast direction, which may be related to evolution of the paleo-South China Sea.
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Key words:
- tectonic deformation /
- Pre-Cenozoic /
- Zhongsha-Xisha block /
- western South China Sea
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[1] 刘海龄, 阎贫, 张伯友, 等.南海前新生代基底与东特提斯构造域[J].海洋地质与第四纪地质, 2004, 24(1): 15-28. http://d.old.wanfangdata.com.cn/Periodical/hydzydsjdz200401003
LIU Hailing, YAN Pin, ZHANG Boyou, et al. Pre-Cenozoic basements of the South China Sea and eastern Tethyan realm [J].Marine Geology and Quaternary Geology, 24(1): 15-28. http://d.old.wanfangdata.com.cn/Periodical/hydzydsjdz200401003
[2] Holloway N H.North Palawan block, Philippines, its relation to Asian mainland and role in evolution of South China Sea [J]. AAPG Bulletin, 1982, 66(9): 1355-1383. http://cn.bing.com/academic/profile?id=e93b7766a0ed9db1228b218c7a70a25f&encoded=0&v=paper_preview&mkt=zh-cn
[3] Taylor B, Hayes D E. The tectonic evolution of the South China Basin[C] // Hayes D E.The tectonic and geologic evolution of Southeast Asian seas and islands.Geophysical Monograph Set 23.Washington D C: AGU, 1980: 89-104.
[4] 赵美松, 刘海龄, 吴朝华.南海南北陆缘中生代地层—构造特征及碰撞造山[J].地球物理学进展, 2012, 27(4): 1454-1464. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqwlxjz201204020
ZHAO Meisong, LIU Hailing, WU Chaohua. Mesozoic stratigraphic and structural features and collisional orogeny between the northern and southern continental margins of the South China Sea [J]. Progress in Geophysics, 2012, 27(4):1454-1464. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqwlxjz201204020
[5] 胡卫剑, 江为为, 郝天珧, 等.南海前新生代残留盆地分布综合地球物理研究[J].地球物理学报, 2011, 54(12):3315-3324. http://d.old.wanfangdata.com.cn/Periodical/dqwlxb201112029
GUO Xiaoran, ZHAO Minghui, HUANG Haibo, et al. Crustal structure of Xisha block and its tectonic attributes [J]. Chinese J. Geophy, 2016, 59(4):1414-1425. http://d.old.wanfangdata.com.cn/Periodical/dqwlxb201112029
[6] Yan P, Liu H. Tectonic-stratigraphic division and blind fold structures in Nansha Waters, South China Sea[J]. Journal of Asian Earth Sciences, 2004, 24(3): 337-348. doi: 10.1016/j.jseaes.2003.12.005
[7] Wang Y L, Qiu Y, Yan P, et al. Seismic evidence for Mesozoic strata in the northern Nansha waters, South China Sea [J]. Tectonophysics, 2016, 677: 190-198. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=3f86f05f532cbddf6d651cbf5886879c
[8] 吴朝华, 赵美松, 刘海龄.南沙中部海域沉积地层特征及其构造成因[J].地球科学:中国地质大学学报, 2011, 36(5): 853-860. http://d.old.wanfangdata.com.cn/Periodical/dqkx201105010
WU Chaohua, ZHAO Meisong, LIU Hailing. Characteristics of sedimentary strata in central Nansha Sea area and its tectonic origin [J]. Earth of Science-Journal of China University of Geosciences, 2011, 36(5): 853-860. http://d.old.wanfangdata.com.cn/Periodical/dqkx201105010
[9] 杨胜雄, 邱燕, 朱本铎, 等.南海地质地球物理图系[M].天津:中国航海图书出版社, 2015.
YANG Shengxiong, QIU Yan, ZHU Benduo, et al. Atlas of Geology and Geophysics of the South China Sea[M].Tianjin: China Navigation Publications, 2015.
[10] 姚伯初.南海西南海盆的岩石圈张裂模式探讨[J].海洋地质与第四纪地质, 1999, 19(2):37-48. http://d.old.wanfangdata.com.cn/Periodical/hydzydsjdz199902005
YAO Bochu. On the lithospheric rifting model in the southwest subbasin of South China Sea [J]. Marine Geology and Quaternary Geology, 1999, 19(2): 37-48. http://d.old.wanfangdata.com.cn/Periodical/hydzydsjdz199902005
[11] 郭晓然, 赵明辉, 黄海波, 等.西沙地块地壳结构及其构造属性[J].地球物理学报, 2016, 59(4): 1414-1425. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqwlxb201604022
GUO Xiaoran, ZHAO Minghui, HUANU Haibo, et al. Crustal structure of Xisha block and its tectonic attributes [J]. Chinese J. Geophy, 2016, 59(4):1414-1425. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqwlxb201604022
[12] 丘学林, 赵明辉, 敖威, 等.南海西南次海盆与南沙地块OBS探测和地壳结构[J].地球物理学报, 2011, 54(12):3117-3128. doi: 10.3969/j.issn.0001-5733.2011.12.012
QIU Xuelin, ZHAO Minghui, AO Wei. OBS survey and crustal structure of the Southwest Sub-basin and Nansha B1ock, South China Sea[J]. Chinese J. Geophy, 2011, 54(12): 3117-3128. doi: 10.3969/j.issn.0001-5733.2011.12.012
[13] 刘海龄, 杨恬, 朱淑芬, 等.南海西北部新生代沉积基底构造演化[J].海洋学报, 2004, 26(3):54-67. doi: 10.3321/j.issn:0253-4193.2004.03.007
LIU Hailing, YANG Tian, ZHU Shufen, et al. Tectonic evolution of Cenozoic sedimentary basements in the northwestern South China Sea[J]. Acta Oceanologica Sinica, 2004, 26(3): 54-67. doi: 10.3321/j.issn:0253-4193.2004.03.007
[14] 刘海龄, 谢国发, 阎贫, 等.南沙海区中生界岩相分布及构造特征[J].海洋与湖沼, 2007, 38(3): 272-278. http://d.old.wanfangdata.com.cn/Periodical/hyyhz200703014
LIU Hailing, XIE Guofa, YAN Pin, et al. Tectonic implication of Mesozoic marine deposits in the Nansha islands of the South China Sea[J]. Oceanologia et Limnologia Sinica, 2007, 38(3): 272-278. http://d.old.wanfangdata.com.cn/Periodical/hyyhz200703014
[15] Liu H L, Sun Y, Guo L Z, et al. On the kinematic characteristics and dynamic process of boundary faults of the Nansha ultra-crust layer-block [J].Acta Geologica Sinica, 1999, 73(4): 452-463. doi: 10.1111/j.1755-6724.1999.tb00855.x
[16] Hall R. 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, 2002, 20(4): 353-431. doi: 10.1016/S1367-9120(01)00069-4
[17] 姚伯初, 万玲, 吴能友.大南海地区新生代板块构造活动[J].中国地质, 2004, 31(2):113-122. doi: 10.3969/j.issn.1000-3657.2004.02.001
YAO Bochu, WAN Ling, WU Nengyou. Cenozoic plate tectonic activities in the great South China Sea area [J]. Geology in China, 2004, 31(2):113-122. doi: 10.3969/j.issn.1000-3657.2004.02.001
[18] 秦国权.西沙群岛"西永一井"有孔虫组合及该群岛珊瑚礁成因初探[J].热带海洋, 1987, 6(3): 10-20.
QIN Guoquan. A preliminary study of foraminifera assemblages of Well 1 Xiyong, Xisha Islands and their coral reef formation [J].Tropical Oceanography, 1987, 6(3):10-17.
[19] 孙嘉诗.西沙基底形成时代的商榷[J].海洋地质与第四纪地质, 1987, 7(4):5-6. http://www.cnki.com.cn/Article/CJFD1987-RDHY198703001.htm
SUN Jiashi. A discussion of the formation ages of the bedrock in the Xisha Islands [J]. Marine Geology and Quaternary Geology, 1987, 7(4):5-6. http://www.cnki.com.cn/Article/CJFD1987-RDHY198703001.htm
[20] 修淳, 张道军, 翟世奎, 等.西沙岛礁基底花岗质岩石的锆石U-Pb年龄及其地质意义[J].海洋地质与第四纪地质, 2016, 36(3): 115-126. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz201603014
XIU Cun, ZHANG Daojun, ZHAI Shikui et al. Zricon U-Pb age of granitic rocks from the basement beneath the Shi island, Xisha islands and its geological significance[J]. Marine Geology and Quaternary Geology, 2016, 36(3): 115-126. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz201603014
[21] 金翔龙.南海地球科学研究报告[J].东海海洋, 1989, 7(4): 30-42.
JIN Xianglong. Geosciences research report of South China Sea[J]. Donghai Marine Science, 1989, 7(4): 30-42.
[22] 周洋, 刘海龄, 朱荣伟, 等.南海北部陆缘古双峰-笔架碰撞造山带空间展布特征[J].海洋地质与第四纪地质, 2016, 36(4): 77-84. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz201604009
ZHOU Yang, LIU HaiLing, ZHU, Rongwei, et al. Spatial distribution of ancient Shuangfeng-Bijia orogen on northern continental margin of South China Sea[J]. Marine Geology and Quaternary Geology, 2016, 36(4): 77-84. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz201604009
[23] 马如辉, 王安志.利用构造恢复原理制作古构造演化图[J].天然气工业, 2006, 26(1): 34-36. doi: 10.3321/j.issn:1000-0976.2006.01.010
MA Ruhui, WANG Anzhi. Mapping palaeostructural evolution with tectonic reconstruction theory [J]. Natural Gas Industry, 2006, 26(1): 34-36. doi: 10.3321/j.issn:1000-0976.2006.01.010
[24] Zhang J, Sun Z, Zhang Y F, et al. Mesozoic deformation in the Chaoshan Depression of the Pearl River Mouth Basin, northern South China Sea[J]. Marine Geophysical Research, 2016:37(3):1-14. http://cn.bing.com/academic/profile?id=fa63a26354e3a57190a42a61d3b47a2b&encoded=0&v=paper_preview&mkt=zh-cn
[25] 阎贫, 刘海龄.南海及其周缘中新生代火山活动时空特征与南海的形成模式[J].热带海洋学报, 2005, 24(2):33-41. doi: 10.3969/j.issn.1009-5470.2005.02.005
YAN Pin, LIU Hailing. Temporal and spatial distribution of meso-cenozoic igneous rocks over South China Sea [J]. Journal of Tropical Oceanography, 2005, 24(2):33-41. doi: 10.3969/j.issn.1009-5470.2005.02.005
[26] Expedition 349 Scientists. South China Sea tectonics: opening of the South China Sea and its implications for southeast Asian tectonics, climates, and deep mantle processes since the late Mesozoic[R]. International Ocean Discovery Program Preliminary Report, 349. 2014.
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