MESO-CENOZOIC TECTONIC FEATURES OF THE WESTERN DEPRESSION OF THE EAST CHINA SEA SHELF BASIN
-
摘要:
东海陆架盆地西部坳陷为整个盆地内重要的二级构造单元之一，发育有多个次级凹陷，完整记录了盆地及周边晚白垩世以来的构造变形信息，能够为解决太平洋板块俯冲、东亚陆缘类型转换等相关科学问题提供参考。基于二维地震剖面解释，并综合前人研究成果，通过对东海陆架盆地西部坳陷的构造分析认为，该坳陷发育有中—新生界两大构造层，由一系列中—新生代裂陷盆地组成，为早白垩世晚期应力场由挤压环境转换为拉张伸展环境下的产物，以伸展构造样式为主，半地堑、掀斜断块、多米诺式断裂等上述伸展构造样式发育。同时，伴随晚白垩世末期的应力反转，坳陷内长江凹陷局部可见有正反转构造样式。坳陷内断裂展布具有不同时期、方向不同、性质各异的特征，而岩浆岩发育则表现出了广泛分布、不同时代、规模和岩性各异的特点，二者皆与区域构造方向基本一致。白垩纪以来，太平洋板块的漂移方向、俯冲角度的多次变化为坳陷现今中—新生代构造格局形成的主要因素，此外后期菲律宾海板块向欧亚板块的碰撞、挤压、俯冲作用使得整个构造格局更加复杂化。
Abstract:The Western Depression(WD), one of the important secondary tectonic units in the East China Sea Shelf Basin(ECSSB), is composed of many subordinate sags. It plays a key role in understanding the tectonic deformation in the ECSSB and adjacent areas since Late Cretaceous and in provision of references in the study of the Pacific subduction, conversion of continental margin type and other related scientific issues. Based on the seismic data interpretation and previous studies, we analyzed the structure framework of the WD in this paper. Both the Mesozoic and Cenozoic tectonic layers are well developed in the WD, and they are characterized by a series of Meso-Cenozoic extensional structural styles, such as half-grabens, titled faulted blocks, domino faults and so on, formed in late Cretaceous due to transformation of stress field from compression to extension. Meanwhile, along with the stress inversion at the end of Late Cretaceous, the positive inversion tectonic patterns also can be seen in the Changjiang Sag of the WD. The distribution patterns and features of faults in the WD vary with time, while the magmatic rocks change in distribution area, time, scale and lithology. Both faults and magnetic rocks are distributed upon the regional tectonic direction. Since Cretaceous, the drifting direction and the subduction angles of the Pacific Plate have become the main factors for the formation of the Mesozoic and Cenozoic tectonic structures in the WD. In addition, the collision, compression and subduction of the Philippine Sea Plate to the Eurasian Plate have made the tectonic pattern more complicated.
-
Key words:
- Meso-Cenozoic /
- deformation /
- dynamic mechanism /
- Western Depression /
- East China Sea Shelf Basin
-
-
表 1 东海陆架盆地西部坳陷中—新生代地层及地震波组对比
Table 1. Comparison of Meso-Cenozoic strata and seismic wave groups in the WD of the ECSSB
一级构造单元 二级构造单元 三级构造单元 浙闽隆起区 东海陆架盆地 西部坳陷 长江凹陷 钱塘凹陷 瓯江凹陷 晋江凹陷 九龙江凹陷 中部隆起 虎皮椒凸起 海礁突起 渔山凸起 武夷低凸起 观音凸起 澎北凸起 东部坳陷 福江凹陷 西湖凹陷 基隆凹陷 新竹凹陷 钓鱼岛隆褶带 冲绳海槽盆地 琉球隆起区 
下载: 导出CSV
表 2 东海陆架盆地西部坳陷中—新生代地层及地震波组对比
Table 2. Comparison of Meso-Cenozoic strata and seismic wave groups in the WD of the ECSSB
下载: 导出CSV
-
[1] 李显武, 周新民.中国东南部晚中生代俯冲带探索[J].高校地质学报, 1995, 5(2): 164-169.
[2] Li J H, Zhang Y Q, Dong S W, et al. Cretaceous tectonic evolution of South China: A preliminary synthesis[J]. Earth-Sci. Rev, 2014, 134: 98-136. doi: 10.1016/j.earscirev.2014.03.008
[3] Li S Z, Santosh M, Jahn B M. Evolution of the Asian continent and its continental margins[J]. Journal of Asian Earth Sciences, 2012, 47: 1-4 doi: 10.1016/j.jseaes.2012.02.001
[4] Li Z X, Li X H, Chung S L, et al. Magmatic switch-on and switch-off along the South China continental margin since the Permian: Transition from an Andean-type to a Western Pacific-type plate boundary[J]. Tectonophysics, 2012, 271: 532-535. doi: 10.1016/j.jseaes.2013.05.016
[5] 李上卿, 彭伟欣.东海地球物理勘探历史回顾[M].北京:地质出版社, 2001:5-13.
[6] 冯晓杰, 蔡东升, 王春修, 等.东海陆架盆地中新生代构造演化特征[J].中国海上油气(地质), 2003, 17(1): 33-37. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zghsyq-dz200301007
[7] 王国纯.东海盆地的形成及演化[J].石油学报, 1987, 8(4): 18-25. doi: 10.7623/syxb198704003
[8] 李家彪.东海区域地质[M].北京:海洋出版社, 2008: 1-4.
[9] 杨文达, 崔征科, 张异彪.东海地质与矿产[M].北京:海洋出版社, 2010: 390-405.
[10] Shang L N, Zhang X H, Du R L, et al. New magnetic data of the southern East China Sea and some geological interpretations[J]. Studia Geophysica et Geodaetica, 2016, 60(4): 679-699. doi: 10.1007/s11200-015-0349-4
[11] 张建培, 余逸凡, 张田, 等.东海西湖凹陷深盆气勘探前景探讨[J].中国海上油气, 2013, 25(2): 24-29. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zghsyq-gc201302005
[12] 李刚, 龚建明, 杨长清, 等. "大东海"中生代地层分布——值得关注的新领域[J].海洋地质与第四纪地质, 2012, 32(3): 97-104. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz201203012
[13] Yang C Q, Yang Y Q, Li G, et al. The Mesozoic Basin-Mountain coupling process of the Southern East China Sea Shelf Basin and its adjacent land area[J]. Acta Geologica Sinica (English Edition), 2016, 90(3): 1051-1052 doi: 10.1111/1755-6724.12748
[14] 金春爽, 乔德武, 须雪豪, 等.东海陆架盆地南部油气资源前景与选区[J].中国地质, 2015, 42(5): 1601-1609. doi: 10.3969/j.issn.1000-3657.2015.05.027
[15] Yang C S, Li G, Luan X W, et al. Geophysical interpretation and formation mechanism of the Yandang Low Uplift in the East China Sea Shelf Basin[J]. Chinese Journal of Geophysics, 2014, 57(5): 650-662. doi: 10.1002/cjg2.20131 http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=10.1002/cjg2.20131
[16] Li S Z, Zhao G C, Dai L M, et al. Mesozoic basins in eastern China and their bearing on the deconstruction of the North China Craton[J]. Journal of Asian Earth Sciences, 2012(47): 64-79. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=a3dd5f75c1a4d35dc399023cc7f439cd
[17] Zhang G W, Guo A C, Wang Y J, et al. Tectonics of South China Continent and its implications[J]. Science China: Earth Sciences, 2013, 56(11): 1804-1828. doi: 10.1007/s11430-013-4679-1
[18] 杨长清, 杨传胜, 李刚, 等.东海陆架盆地南部中生代构造演化与原型盆地性质[J].海洋地质与第四纪地质, 2012, 32(3): 105-111. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz201203013
[19] 刘金水, 廖宗廷, 贾健谊, 等.东海陆架盆地地质结构及构造演化[J].上海地质, 2003(3): 1-6. doi: 10.3969/j.issn.2095-1329.2003.03.001
[20] 索艳慧, 李三忠, 戴黎明, 等.东海陆架盆地构造单元划分与特征[J].海洋地质与第四纪地质, 2010, 30(6): 49-58. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz201006007
[21] Suo Y H, Li S Z, Yu S, et al. Cenozoic tectonic jumping and implications for hydrocarbon accumulation in basins in the East Asia Continental Margin[J]. Journal of Asian Earth Sciences, 2014, 88: 28-40. doi: 10.1016/j.jseaes.2014.02.019
[22] Cukur D, Horozal S, Lee G H, et al. Structural evolution of the northern East China Sea Shelf Basin interpreted from cross-section restoration[J]. Marine Geophysical Research, 2011, 32(3): 363-381. doi: 10.1007/s11001-011-9114-4
[23] 王可德, 王建平, 徐国庆, 等.东海陆架盆地西南部中生代地层的发现[J].地层学杂志, 2000, 24(2): 129-131. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dcxzz200002009
[24] 杨传胜, 李刚, 栾锡武, 等.东海陆架盆地雁荡低凸起综合地球物理解释及其成因探讨[J].地球物理学报, 2014, 57(9): 2981-2992. doi: 10.6038/cjg20140923
[25] Zhou X M, Li W X. Origin of Late Mesozoic igneous rocks in Southeastern China: implications for lithosphere subduction and underplating of mafic magmas[J]. Tectonophysics, 2000, 326(3): 269-287. http://cn.bing.com/academic/profile?id=2940b532b88f5bf2d35cfb5f5a8298b2&encoded=0&v=paper_preview&mkt=zh-cn
[26] 杨传胜, 李刚, 杨长清, 等.东海陆架盆地及其邻域岩浆岩时空分布特征[J].海洋地质与第四纪地质, 2012, 32(3): 125-133. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz201203016
[27] 张训华.中国海域构造地质学[M].北京:海洋出版社, 2008: 104-114.
[28] 李三忠, 余珊, 赵淑娟, 等.东亚大陆边缘的板块重建与构造转换[J].海洋地质与第四纪地质, 2013, 33(3): 65-94. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz201303008
[29] Yang C S, Li S Z, Li G, et al. Tectonic units and proto-basin of the East China Sea Shelf Basin: correlation to Mesozoic subduction of the Palaeo-Pacific Plate[J]. Geological Journal, 2016, 51(S1): 149-161. http://cn.bing.com/academic/profile?id=a54e78b5e4dd46b1f33e6e96037b7eea&encoded=0&v=paper_preview&mkt=zh-cn
-
图(5)
表(2)
计量
- 文章访问数: 205
- PDF下载数: 2
- 施引文献: 0