| 南海南北陆缘中生代地层—构造特征及碰撞造山 |
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| 引用本文： | 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. |
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| 作者姓名： | 赵美松 刘海龄 吴朝华 |
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| 作者单位： | 1. 中国科学院南海海洋研究所边缘海地质重点实验室,广州510301;中国科学院研究生院,北京100049
2. 中国科学院南海海洋研究所边缘海地质重点实验室,广州,510301 |
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| 基金项目： | 国家重点基础研究发展计划(“973”)(批准号:2007CB411700);国家自然科学基金项目(批准号:No.40976029)资助 |
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| 摘 要： | 为进一步深入了解南海地区中生代构造演化过程.本文对南海南北陆缘的中生代地层进行了分析对比,在此基础上挑选了南北陆缘处的两条地震测线07ns-6和97301进行了详细的解释分析.通过地震剖面的解释发现,南海北部和南部(礼乐地块)地震剖面中的中生代地层均显示有褶皱—冲断构造发育.据此推断,研究区在中生代先后经历了洋—陆俯冲活动、陆 陆碰撞造山运动及中生代晚期开始的造山带的塌陷.提出南海地区中生代晚期的“古双峰笔架碰撞造山带”概念.
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| 关 键 词： | 南海 陆缘 中生代地层 古双峰-笔架俯冲海沟 古双峰—笔架碰撞造山带 |
Mesozoic Stratigraphic and Structural Features and Collisional Orogeny between the Northern and Southern Continental Margins of South China Sea |
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| ZHAO Mei-song
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LIU Hai-ling
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WU Chao-hua.Mesozoic Stratigraphic and Structural Features and Collisional Orogeny between the Northern and Southern Continental Margins of South China Sea[J].Progress in Geophysics,2012,27(4):1454-1464. |
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| Authors: | ZHAO Mei-song LIU Hai-ling WU Chao-hua |
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| Institution: | 1,2 (1.Key Lab of Marginal Sea Geology,South China Sea Institute of Oceanology, Chinese Academy of Sciences,Guangzhou 510301,China 2.Graduate University,Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | In order to research the tectonic evolution of the South China Sea in Mesozoic further more,the authors analyzed and compared the Mesozoic strata between the northern and southern margins of the South China Sea(SCS).Two seismic lines 97301 and 07ns-6 were selected from the northern and southern margins,they also be explained in detail.By the interpretation of seismic profiles,we found clearly fold-thrust structures developed both in the northern and southern margins of the South China Sea.It was inferred that the study area had experienced ocean-continent subduction,continent-continent collision in the Mesozoic,and since the late Mesozoic the orogenic belt began collapsing.The authors described the tectonic evolution in the Mesozoic in the South China Sea and adjacent areas,and proposed the conception of " ancient Shuangfeng-Bijia collision orogenic belt " in the late Mesozoic. |
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| Keywords: | South China Sea continental margins Mesozoic strata ancient Shuangfeng-Bijia subduction trench ancient Shuangfeng-Bijia collisional orogeny |
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