南海北部新生代构造迁移特征
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摘要
选择南海北部比较有代表性的珠江口、琼东南和中建南3个盆地作为研究区,对所获取的剖面进行了地震解释工作,运用地震地层学和构造地质学等方法对我国南海北部新生代演化史开展研究,探讨了南海北部陆缘各区域构造演化差异及规律。结果表明,南海北部陆缘构造活动在时序上存在着迁移的特征,体现出自北向南"珠江口盆地→琼东南盆地"、"珠江口盆地→中建南盆地"构造事件逐渐变晚的趋势。因此,南海北部陆缘破裂从北部开始,以"撕裂"的方式逐渐向南推进,同时排除了红河断裂的叠加影响,南海北部自北向南断陷活动强度逐渐减弱。在其后的演化中,构造沉降与物质充填中心的迁移以一种更加复杂的方式进行。
We selected the Pearl River Mouth Basin,the Qiongdongnan Basin and the Zhongjiannan Basin as the three targets for study of the Cenozoic tectonic migration in the Northern South China Sea. Interpretation was carried out for the seismic profiles across the above basins.Integrated methods, such as seismostratigraphy,structural geology and others,were adopted to reveal the Cenozoic tectonic evolution of the northern South China Sea and the tectonic evolutionary pattern of each basin in order to find out the history of tectonic migration and regional differences on the northern margin of the South China Sea.The results proved that Cenozoic tectonic migration did happen in this region following N-S direction.Tectonic events became gradually younger from the Pearl River Mouth Basin to the Qiongdongnan Basin and from the Pearl River Mouth Basin to the Zhongjiannan Basin.The rifting apart of the South China Sea started from the north,and gradually moved southward.In spite of the influence of the Red River fault zone,the intensity of the rifting process became weaker from north to south as well.The tectonic migration would certainly make the tectonic pattern of subsidence as well as depositional centers more complicated.
We selected the Pearl River Mouth Basin,the Qiongdongnan Basin and the Zhongjiannan Basin as the three targets for study of the Cenozoic tectonic migration in the Northern South China Sea. Interpretation was carried out for the seismic profiles across the above basins.Integrated methods, such as seismostratigraphy,structural geology and others,were adopted to reveal the Cenozoic tectonic evolution of the northern South China Sea and the tectonic evolutionary pattern of each basin in order to find out the history of tectonic migration and regional differences on the northern margin of the South China Sea.The results proved that Cenozoic tectonic migration did happen in this region following N-S direction.Tectonic events became gradually younger from the Pearl River Mouth Basin to the Qiongdongnan Basin and from the Pearl River Mouth Basin to the Zhongjiannan Basin.The rifting apart of the South China Sea started from the north,and gradually moved southward.In spite of the influence of the Red River fault zone,the intensity of the rifting process became weaker from north to south as well.The tectonic migration would certainly make the tectonic pattern of subsidence as well as depositional centers more complicated.
引文
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[17]谢文彦,张一伟,孙珍,等.琼东南盆地断裂构造与成因机制[J].海洋地质与第四纪地质,2007,27(1):71-78.
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[19]陈玲,钟广见.南海中建南盆地地震地层分析[J].石油物探,2008,47(6):609-616.
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[21]姜春发,朱松年.构造迁移论概述[J].地球学报,1992,13(1):1-14.
[22]夏斌,吕宝凤,吴国干,等.南海北部新生代盆地构造迁移及其对烃源岩的制约作用[J].天然气地球科学,2007,18(5):629-634.
[23]周蒂,陈汉宗,吴世敏,等.南海的右行陆缘裂解成因[J].地质学报,2002,76(2):180-190.
[24]吴世敏,丘学林,周蒂.南海西缘新生代沉积盆地形成动力学探讨[J].大地构造与成矿学,2005,29(3):346-353.
[25]闫义,夏斌,林舸,等.南海北缘新生代盆地沉积与构造演化及地球动力学背景[J].海洋地质与第四纪地质,2005,25(2):53-61.
[26]吕宝凤,袁亚娟.南海北部深水盆地沉积—构造的差异性及其油气意义[J].大地构造与成矿学,2008,32(4):441-447.
[27]Ru K,Pigott J D.Episodic rifting and subsidence in the South China Sea[J].AAPG Bulletin,1986,70(9):1136-1155.
[28]Chen P H,Chen Z Y,Zhang Q M.Sequence stratigraphy and continental margin development of the northwestern shelf of the South China Sea[J].AAPG Bulletin,1993,77(5):842-862.
[2]龚再升,李思田.南海北部大陆边缘盆地分析与油气聚集[M].北京:科学出版社,1997.
[3]张健,汪集旸.南海北部陆缘带构造扩张的深部地球动力学特征[J].中国科学(D辑),2000,30(6):561-567.
[4]高红芳.南海北部陆缘东、西部新生代沉积盆地基底特征对比分析[J].南海地质研究,2008(1):23-34.
[5]杨金玉.南海海盆形成演化模式概述[J].海洋地质动态,1998,14(8):8-10.
[6]黎明碧,金翔龙.中国南海的形成演化及动力学机制研究综述[J].科技通报,2006,22(1):16-20.
[7]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.
[8]朱伟林,张功成,高乐.南海北部大陆边缘盆地油气地质特征与勘探方向[J].石油学报,2008,29(1):1-9.
[9]夏戡原,黄慈流.南海中生代特提斯期沉积盆地的发现与找寻中生代含油气盆地的前景[J].地学前缘,2000,7(3):227-238.
[10]周蒂,陈汉宗,孙珍,等.南海中生代三期海盆及其与特提斯和古太平洋的关系[J].热带海洋学报,2005,24(2):16-25.
[11]蔡周荣,刘维亮,万志,等.南海北部新生代构造运动厘定及与油气成藏关系探讨[J].海洋通报,2010,29(2):161-165.
[12]Liu S F.Upper Triassic—Jurassic sequence stratigraphy and its structural controls in the western Ordos Basin,China[J].Basin Research,2000(1):1-18.
[13]林畅松.沉积盆地的构造地层分析——以中国构造活动盆地研究为例[J].现代地质,2006,20(2):185-194.
[14]王华,廖远涛,陆永潮,等.中国东部新生代陆相断陷盆地层序的构成样式[J].中南大学学报(自然科学版),2010,41(1):277-285.
[15]邵磊,雷永昌,庞雄,等.珠江口盆地构造演化及对沉积环境的控制作用[J].同济大学学报(自然科学版),2005,33(9):1177-1181.
[16]赵中贤,周蒂,廖杰.珠江口盆地第三纪古地理及沉积演化[J].热带海洋学报,2009,28(6):52-60.
[17]谢文彦,张一伟,孙珍,等.琼东南盆地断裂构造与成因机制[J].海洋地质与第四纪地质,2007,27(1):71-78.
[18]钟志洪,王良书,李绪宣,等.琼东南盆地古近纪沉积充填演化及其区域构造意义[J].海洋地质与第四纪地质,2004,24(1):29-36.
[19]陈玲,钟广见.南海中建南盆地地震地层分析[J].石油物探,2008,47(6):609-616.
[20]高红芳,陈玲.南海西部中建南盆地构造格架及形成机制分析[J].石油与天然气地质,2006,27(4):512-516.
[21]姜春发,朱松年.构造迁移论概述[J].地球学报,1992,13(1):1-14.
[22]夏斌,吕宝凤,吴国干,等.南海北部新生代盆地构造迁移及其对烃源岩的制约作用[J].天然气地球科学,2007,18(5):629-634.
[23]周蒂,陈汉宗,吴世敏,等.南海的右行陆缘裂解成因[J].地质学报,2002,76(2):180-190.
[24]吴世敏,丘学林,周蒂.南海西缘新生代沉积盆地形成动力学探讨[J].大地构造与成矿学,2005,29(3):346-353.
[25]闫义,夏斌,林舸,等.南海北缘新生代盆地沉积与构造演化及地球动力学背景[J].海洋地质与第四纪地质,2005,25(2):53-61.
[26]吕宝凤,袁亚娟.南海北部深水盆地沉积—构造的差异性及其油气意义[J].大地构造与成矿学,2008,32(4):441-447.
[27]Ru K,Pigott J D.Episodic rifting and subsidence in the South China Sea[J].AAPG Bulletin,1986,70(9):1136-1155.
[28]Chen P H,Chen Z Y,Zhang Q M.Sequence stratigraphy and continental margin development of the northwestern shelf of the South China Sea[J].AAPG Bulletin,1993,77(5):842-862.
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