中国滨太平洋构造域构造格架和东海地质演化
|
摘要
东海位于亚洲大陆东部滨太平洋构造域。根据刘光鼎院士的意见,中国东部大陆边缘海构造演化过程可归纳为陆核形成阶段(Ar-Pt1-2)—古全球构造阶段(Pt1-C)—中间构造变动阶段(P-T2)—新全球构造发展阶段(T3-Q)。最后的发展阶段主要表现为3次变革运动,即:T3-K1的挤压、改造;K2-E32的拉张、聚敛;E32-Q的俯冲、沉降,从而塑造出现今中国海、陆的大地构造面貌。东部大陆边缘海,以东海陆架盆地为代表,主要形成于晚白垩世至中新世,经历了断陷—拗陷—区域沉降3个演化阶段。东海一个特殊的地质构造即冲绳海槽,关于它的成因说法不一。但从它具有高热流、强地震、多火山、活断层等现代构造活动的显著特征,可以认为它是一个典型的发育在大陆边缘,由陆壳扩张而成,尚处于扩张早期的弧后活动盆地。
The East China Sea is located along the continental margin of east Mainland China and in the junction of the Eurasian plate and the Pacific plate. Its evolutionary history could be summarized into four stages:stage of formation of the continental nuclei from Ar to Pt12,stage of ancient global tectonics from Pt1 to C,stage of tectonic deformation from P to T2,and stage of new global tectonics from T3 to Q.The last stage saw three deformations,namely,compression and reformation from T3 to K1,extension and convergence from K2 to E23,and subduction and subsidence from E33 to Q.These deformations resulted in the final formation of the tectonic framework of the China continent and its adjacent seas.A representative marginal sea to the east of Mainland China,the East China Sea,began to form in late Cretaceous and completed the formation in mid Miocene,experiencing rifting,depression and regional subsidence stages.The Okinawa Trough is a specific geological phenomenon.There are arguments concerning origin of the sea.Based upon the evidence of high heat flow,intensive earthquake,frequent volcanic activities and active faults,it is inferred as a typical backarc basin.
The East China Sea is located along the continental margin of east Mainland China and in the junction of the Eurasian plate and the Pacific plate. Its evolutionary history could be summarized into four stages:stage of formation of the continental nuclei from Ar to Pt12,stage of ancient global tectonics from Pt1 to C,stage of tectonic deformation from P to T2,and stage of new global tectonics from T3 to Q.The last stage saw three deformations,namely,compression and reformation from T3 to K1,extension and convergence from K2 to E23,and subduction and subsidence from E33 to Q.These deformations resulted in the final formation of the tectonic framework of the China continent and its adjacent seas.A representative marginal sea to the east of Mainland China,the East China Sea,began to form in late Cretaceous and completed the formation in mid Miocene,experiencing rifting,depression and regional subsidence stages.The Okinawa Trough is a specific geological phenomenon.There are arguments concerning origin of the sea.Based upon the evidence of high heat flow,intensive earthquake,frequent volcanic activities and active faults,it is inferred as a typical backarc basin.
引文
[1] 黄汲清,李春昱.中国及其邻区大地构造论文集[C].北京:地质出版社,1981.
[2] 张文佑.断块构造导论[M].北京:石油工业出版社,1984.
[3] 张文佑.中国及邻区海陆大地构造[M].北京:科学出版社,1986.
[4] 刘光鼎.中国海油气资源的勘探与开发[J].海洋地质与第四纪地质,1986,6(4):1—8.
[5] 蔡乾忠.中国东南大陆边缘活动与含油气盆地形成问题的探讨[J].海洋地质与第四纪地质,1986,6(4):9—21.
[6] 秦蕴珊,等.东海地质[M].北京:科学出版社,1987.
[7] 业治铮.中国海洋地质调查研究进展概况[J].海洋地质与第四纪地质,1988,8(3):1—7.
[8] 刘光鼎.中国海区及邻域地质-地球物理系列图(1∶500万)说明书[A].北京:地质出版社,1992.
[9] 许东禹,刘锡清,张训华,等.中国近海地质[M].北京:地质出版社,1997.
[10] 李四光.中国地质学[M].北京:地质出版社,1999.
[11] 赵广涛,瞿世奎,王文正,等.冲绳海槽火山岩——揭示弧后盆地早期扩张运动学过程的钥匙[J].海洋地质与第四纪地质,2001,21(3):119—122.5
[2] 张文佑.断块构造导论[M].北京:石油工业出版社,1984.
[3] 张文佑.中国及邻区海陆大地构造[M].北京:科学出版社,1986.
[4] 刘光鼎.中国海油气资源的勘探与开发[J].海洋地质与第四纪地质,1986,6(4):1—8.
[5] 蔡乾忠.中国东南大陆边缘活动与含油气盆地形成问题的探讨[J].海洋地质与第四纪地质,1986,6(4):9—21.
[6] 秦蕴珊,等.东海地质[M].北京:科学出版社,1987.
[7] 业治铮.中国海洋地质调查研究进展概况[J].海洋地质与第四纪地质,1988,8(3):1—7.
[8] 刘光鼎.中国海区及邻域地质-地球物理系列图(1∶500万)说明书[A].北京:地质出版社,1992.
[9] 许东禹,刘锡清,张训华,等.中国近海地质[M].北京:地质出版社,1997.
[10] 李四光.中国地质学[M].北京:地质出版社,1999.
[11] 赵广涛,瞿世奎,王文正,等.冲绳海槽火山岩——揭示弧后盆地早期扩张运动学过程的钥匙[J].海洋地质与第四纪地质,2001,21(3):119—122.5