| Layer-block tectonics of Cenozoic basements and formation of intra-plate basins in Nansha micro-plate, southern South China Sea |
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| 作者姓名： | LIU Hailing XIE Guof LIN Qiujin ZHENG Hongbo LIU Yingchun |
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| 作者单位： | LIU Hailing,LIN Qiujin,ZHENG Hongbo,LIU Yingchun(Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology,Chinese Academy of Sciences, Guangzhou 510301, China);XIE Guofa(Brigade 261, Bureau of Nuclear Geology, Jiangxi Province, Yingtan 335001, China) |
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| 基金项目： | The National Basic Research Program of China (“973”) under contract Nos 2009CB2194 and 2007CB411700,the Major Knowledge Innovation Programs of the Chinese Academy of Sciences under contract No.kzcx2-yw-203-01,the National Natural Science Foundation of China of China under contract No.40676039,the National Program of Sustaining Science and Technology of China under contract No.2006BAB19B02,the Program of the Ministry of Land and Natural Resources of China under contract No.GT-YQ-QQ-2008-1-02. |
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| 摘 要： | Layer-block tectonics(LBT)concept,with the core of pluralistic geodynamic outlook and multilayer-sliding tectonic outlook,is one of new keys to study 3-dimensional solid and its 4-dimensional evolution history of global tectonic system controlled by global geodynamics system.The LBT concept is applied to study the lithospheric tectonics of the southern South China Sea(SCS).Based on the analysis of about 30000 km of geophysical and geological data,some layer-blocks in the Nansha micro-plate can be divided as Nansha ultra-crustal layer-block,Zengmu crustal layer-block,Nanwei(Rifleman bank)–Andu(Ardasier bank)and Liyue(Reed bank)–North Palawan crustal layer-blocks,Andu-Bisheng and Liyue–Banyue basemental layer-blocks.The basic characteristics of the basemental layer-blocks have been dicussed,and three intra-plate basin groups are identified.The intra-plate basins within Nansha micro-plate can bedivided into three basin groups of Nanwei–Andu,Feixin–Nanhua,and Liyue–North Palawan based on the different geodynamics.In the light of pluralistic geodynamic concept,the upheaving force induced by the mid-crust plastic layer is proposed as the main dynamical force which causes the formation of the intra-plate basins within the Nansha micro-plate.Finally,models of a face-to-face dip-slip–detachment of basemental layer-block and a unilateral dip-slip–detachment of basemental layer-block are put forward for the forming mechanisms of the Nanwei–Andu and Liyue-North Palawan intra-plate basin groups,respectively.
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| 关 键 词： | 南沙微板块 曾母盆地 中国海 南美洲 内部构造 地下室 新生代 Sea |
| 收稿时间： | 2007/8/19 0:00:00 |
| 修稿时间： | 2008/8/26 0:00:00 |
Layer-block tectonics of Cenozoic basements and formation of intra-plate basins in Nansha micro-plate, southern South China Sea |
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| LIU Hailing,XIE Guof,LIN Qiujin,ZHENG Hongbo,LIU Yingchun.Layer-block tectonics of Cenozoic basements and formation of intra-plate basins in Nansha micro-plate, southern South China Sea[J].Acta Oceanologica Sinica,2009,28(3):26-39. |
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| Authors: | LIU Hailing XIE Guof LIN Qiujin ZHENG Hongbo and LIU Yingchun |
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| Institution: | 1.Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China2.Brigade 261, Bureau of Nuclear Geology, Jiangxi Province, Yingtan 335001, China |
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| Abstract: | Layer-block tectonics (LBT) concept, with the core of pluralistic geodynamic outlook and multi- layer-sliding tectonic outlook, is one of new keys to study 3-dimensional solid and its 4-dimensional evolution history of global tectonic system controlled by global geodynamics system. The LBT concept is applied to study the lithospheric tectonics of the southern South China Sea (SCS). Based on the analysis of about 30 000 km of geophysical and geological data, some layer-blocks in the Nansha micro-plate can be... |
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| Keywords: | layer-block tectonics forming mechanism of intra-plate basin Nansha micro-plate South China Sea oil and gas gas hydrate |
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