南黄海海域中生代前陆盆地形成的构造背景
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摘要
南黄海盆地占据了下扬子板块的主体,自元古宙以来经历了多期构造运动,受到华北板块、扬子板块、华南板块、太平洋板块多个板块相互作用的影响,形成多期盆地演化阶段的叠合盆地。分析了南黄海盆地前人钻井资料及最新二维地震资料,并与下扬子苏北盆地地层及构造特征进行对比,认为整个下扬子区域受华北—扬子板块碰撞的影响,经历了中生代前陆盆地演化阶段。下扬子陆域部分地区发育相对完整的中生代沉积,记录了华北—扬子板块之间洋壳消减、陆陆碰撞、前陆盆地发育及碰撞后活动。而在下扬子对应海域延伸部分的南黄海盆地中,仅在盆地北部烟台坳陷东北缘通过钻井证实有侏罗纪前陆盆地地层,钻遇地层仅发育侏罗系上部陆相沉积,在地震剖面中可以解释出侏罗系下部海陆交互相地层,向上转变为陆相沉积地层。对比下扬子陆域与海域地层发育情况,华北—扬子板块碰撞造山过程对于下扬子整个区域的影响因地而异,在三叠纪末期—侏罗纪时期南黄海盆地内沉积缺失,南黄海海域区处于广泛抬升状态,印支运动期间地层挤压活动强烈,烟台坳陷内海相地层中逆冲断层广泛发育。在南黄海盆地东北缘,前陆盆地侏罗系地层发育于南倾边界断层的上盘,认为南黄海盆地侏罗纪前陆盆发育的构造背景受到同期北侧千里岩超高压变质带从深部折返影响,随着千里岩隆起带的快速抬升,为南黄海盆地北缘提供了沉积空间及物源,沉积了大套的侏罗系前陆盆地地层。
The southern Yellow Sea basin occupies the main part of the lower Yangtze plate. The basin had experienced multiphase deformation since the Proterozoic, led by tectonic interactions among the North China,Yangtze, and Pacific plates. The study utilized previous drilling and 2 D seismic data to compare the regional stratigraphic and structural framework. The lower Yangtze plate had experienced the North China-Yangtze collision, with the development of the Mesozoic foreland basin. Based on previous studies, the lower Yangtze region had developed a complete Mesozoic sequence and recorded the subduction of oceanic crust, continent collision,foreland basin development and post-collisional tectonics. While in the south Yellow Sea basin, the development of Jurassic foreland beasin was only confirmed in the northeastern sag, with its marine-terrigenous facies being interpreted in seismic sections. Stratigraphic comparison between the lower Yangtze terrestrial and marine areas revealed that the North China-Yangtze collision had different influence on different areas. During the Late Triassic-Jurassic,the southern Yellow Sea basin was likely denudated with thrust developed in the pelagic sequences. In the NE margin of the southern Yellow Sea basin, Jurassic foreland seqhence was developed in the hanging-wall of the south-dipping boundary fault. The Jurassic foreland development tectonics may have been affected by the exhumation of the Qianliyan high-pressure metamorphic belt from the deep crust. The rapid uplift of the Qianliyan belt likely provided the space and sediments for the Jurassic foreland deposition in the southern Yellow Sea basin.
The southern Yellow Sea basin occupies the main part of the lower Yangtze plate. The basin had experienced multiphase deformation since the Proterozoic, led by tectonic interactions among the North China,Yangtze, and Pacific plates. The study utilized previous drilling and 2 D seismic data to compare the regional stratigraphic and structural framework. The lower Yangtze plate had experienced the North China-Yangtze collision, with the development of the Mesozoic foreland basin. Based on previous studies, the lower Yangtze region had developed a complete Mesozoic sequence and recorded the subduction of oceanic crust, continent collision,foreland basin development and post-collisional tectonics. While in the south Yellow Sea basin, the development of Jurassic foreland beasin was only confirmed in the northeastern sag, with its marine-terrigenous facies being interpreted in seismic sections. Stratigraphic comparison between the lower Yangtze terrestrial and marine areas revealed that the North China-Yangtze collision had different influence on different areas. During the Late Triassic-Jurassic,the southern Yellow Sea basin was likely denudated with thrust developed in the pelagic sequences. In the NE margin of the southern Yellow Sea basin, Jurassic foreland seqhence was developed in the hanging-wall of the south-dipping boundary fault. The Jurassic foreland development tectonics may have been affected by the exhumation of the Qianliyan high-pressure metamorphic belt from the deep crust. The rapid uplift of the Qianliyan belt likely provided the space and sediments for the Jurassic foreland deposition in the southern Yellow Sea basin.
引文
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[3]刘和甫.前陆盆地类型及褶皱-冲断层样式[J].地学前缘,1995, 2(3):59-68.
[4]郭令智,施央申,孙岩,等.下扬子区前陆盆地逆冲推覆构造的研究[J].南京大学学报(自然科学版),1988, 24(1):3-11.
[5]闫吉柱,俞凯,赵曙白,等.下扬子区中生代前陆盆地[J].石油实验地质,1999, 21(2):95-99.
[6]朱光,徐嘉炜,刘国生,等.下扬子地区前陆变形构造格局及其动力学机制[J].地质通报,1999, 18(1):73-79.
[7]丁卫星,赵挺,赵胜,等.下扬子前陆盆地北部构造变形特征研究[J].复杂油气藏,2013(2):1-6.
[8]王连进,叶加仁,吴冲龙.南黄海盆地前第三系油气地质特征[J].天然气工业,2005, 25(7):1-3.
[9]张训华,杨金玉,李刚,等.南黄海盆地基底及海相中、古生界地层分布特征[J].地球物理学报,2014, 57(12):4041-4051.
[10]庞玉茂,张训华,肖国林,等.下扬子南黄海沉积盆地构造地质特征[J].地质论评,2016, 62(3):604-616.
[11]梁杰,梁杰,陈建文,等.南黄海盆地中、古生界盖层条件[J].现代地质,2016, 30(2):353-360.
[12]张贺.南黄海前陆盆地动力过程与盆山耦合关系研究[D].青岛:中国海洋大学,2013.
[13]张柏林,许红,陆永潮,等.南黄海前陆盆地系统及沉积—构造特征[J].海洋地质前沿,2015, 31(4):35-41.
[14]冯志强,陈春峰,姚永坚,等.南黄海北部前陆盆地的构造演化与油气突破[J].地学前缘,2008, 15(6):219-231.
[15]程日辉,王璞珺,刘万洙,等.下扬子区三叠纪层序地层样式对扬子板块与华北板块碰撞的响应[J].大地构造与成矿学,2004, 28(2):134-141.
[16]段吉业,刘鹏举,夏德馨.浅析华北板块中元古代-古生代构造格局及其演化[J].现代地质,2002, 16(4):331-338.
[17] ZHU G, JIANG D, ZHANG B, et al. Destruction of the eastern North China Craton in a backare setting:Evidence from crustal deformation kinematics[J]. Gondwana Research,2012,22(1):86-103.
[18]郑建平,汤华云,张志海,等.大陆科学钻探先导孔(CCSD-P1)橄榄岩地幔属性及动力学意义[J].现代地质,2007, 21(2):275-285.
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[20] HACHKER B R, RATSCHBACHER L, WEBB L, et al. Exhumation of ultrahigh-pressure continental crust in east central China:Late Triassic-Early Jurassic tectonic unroofing[J]. Journal of Geophysical Research, 2000, 105(6):13339-13364.
[21]蔡乾忠.中国东部与朝鲜大地构造单元对应划分[J].海洋地质与第四纪地质,1995, 15(1):7-24.
[22]蔡乾忠.中国海域油气地质学[M].北京:海洋出版社,2005:1-20.
[23]李建青,蒲仁海,田媛媛.下扬子区印支期后构造演化与有利勘探区预测[J].现代地质,2012, 26(2):326-332.
[24]汪新伟,沃玉进,张荣强.扬子克拉通南华纪—早古生代的构造-沉积旋回[J].现代地质,2008, 22(4):39-47.
[25] ZHAO G, CAWOOD P A. Precambrian geology of China[J].Precambrian Research, 2012, 222/223:13-54.
[26]李慧君.南黄海盆地海相中—古生洲沟造区划[J].海洋地质前沿,2014, 30(10):8-13.
[27]杨艳秋,李刚,易春燕.南黄海盆地海相地层地震反射特征及地震层序地质时代[J].东北石油大学学报,2015, 39(3):50-59.
[28]岳保静,廖晶,刘鸿,等.中朝—扬子板块碰撞结合带东部边界及海域延伸[J].海洋地质与第四纪地质,2014, 34(1):75-85.
[29]程日辉,王璞珺,刘万洙,等.下扬子区三叠纪层序地层样式对扬子板块与华北板块碰撞的响应[J].大地构造与成矿学,2004, 28(2):134-141.
[30]来志庆,邹昊,陈淳.南黄海千里岩隆起区构造属性及地质演化[J].海洋湖沼通报, 2011(4):164-168.
[31]李敏,韩宗珠,许红,等.南黄海千里岩岛榴辉岩的地球化学特征及成因分析[J].中国海洋大学学报(自然科学版),2014, 44(11):59-66.
[32]李刚,张燕,陈建文,等.黄海海域陆相中生界地震反射特征及靶区优选[J].中国海洋大学学报(自然科学版),2004,34(6):1069-1074.
[33]蔡乾忠.横贯黄海的中朝造山带与北、南黄海成盆成烃关系[J].石油与天然气地质,2005, 26(2):185-192.
[34]姚永坚,夏斌,冯志强,等.南黄海古生代以来构造演化[J].石油实验地质,2005, 27(2):124-128.
[35]万天丰,郝天珧.黄海新生代构造及油气勘探前景[J].现代地质,2009, 23(3):385-393.
[36]杜建波,何明喜,张艳霞,等.下扬子北缘前陆盆地构造演化及沉积特征[J].石油实验地质,2007, 29(2):133-137.
[37]杨琦,陈红宇.苏北-南黄海盆地构造演化[J].石油实验地质,2003,25(1):562-565.
[38]蔡峰,熊斌辉.南黄海海域与下扬子地区海相中—古生界地层对比及烃源岩评价[J].海洋地质前沿,2007, 23(6):1-6.
[39]梁杰.构造作用对南黄海盆地三叠系青龙组储层的影响[J].海洋地质前沿,2014, 30(10):57-61.
[40]杨艳秋.南黄海南部二叠系上统—三叠系下统的分布特征及油气勘探的意义[D].长春:吉林大学,2004.
[41]高顺莉,谭思哲,侯凯文,等.南黄海海域侏罗系分布与构造意义[J].海洋地质前沿,2015,31(4):7-12.
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