渤海湾盆地区燕山期构造特征与原型盆地
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摘要
结合近几年来渤海湾盆地区深层地震勘探与解释的成果,重点论述了渤海湾盆地区燕山期构造特征与盆地原型,提出燕山期构造变形样式总体在纵向上可分为三个构造层,分别称为上部、中部和下部;横向上总体可分为三个构造带,西部为向西逆冲的薄皮逆冲带,中部为冲断-走滑带,东部为厚皮褶皱-冲断带,主体由两期挤压方向皆为NW-SE向的褶皱-逆冲变形形成;并将其演化分为三个阶段:燕山早期、燕山中期和燕山晚期.但是,渤海湾盆地区燕山期的构造变形特征和原型盆地有所变化,其空间上的差异是基底构造格局及其空间差异叠合的结果.综合其它研究结果还表明,渤海湾盆地区燕山期构造是在西太平洋大陆边缘弧的挤压构造背景下,陆内壳下拆沉和壳内挤出逃逸构造的综合动力作用下形成的.
Combined with seismic prospecting and interpretation of the deep layer in the Bohai Bay Basin in recent several years, this paper describes that the Yanshanian structural features and basin prototypes of Mesozoic Bohai Bay Basin and proposes that the Yanshanian structure can be divided into three levels of the upper, the meddile and the lower in the vertical and into three belts of the westward imbricated-thrust-fold belt in the west, the thrust\|strike-slip-fault belt in the medium and the thickened fold-reverse-fault belt in the rear or east. These structures resulted from folding and thrusting of the same NW-SE shortenings during two stages. The Mesozoic tectonics is divided into three stages of the early Yanshanian, the medium Yanshanian and the later Yanshanian. However, the features of folding and thrusting and basin prototypes changed with the different spatial and temporal variation. Especially the structural difference derived from the structural difference of the crystalline basement and the different superposition of different satges of structures. Other evidences show that the Yanshanian tectonic setting under the Neozoic Bohai Bay Basin formed in the compressive setting of the western Pacific continental marginal arc and in the delamination of the sub-crustal lithosphereas well as the intra-crustal escape.
Combined with seismic prospecting and interpretation of the deep layer in the Bohai Bay Basin in recent several years, this paper describes that the Yanshanian structural features and basin prototypes of Mesozoic Bohai Bay Basin and proposes that the Yanshanian structure can be divided into three levels of the upper, the meddile and the lower in the vertical and into three belts of the westward imbricated-thrust-fold belt in the west, the thrust\|strike-slip-fault belt in the medium and the thickened fold-reverse-fault belt in the rear or east. These structures resulted from folding and thrusting of the same NW-SE shortenings during two stages. The Mesozoic tectonics is divided into three stages of the early Yanshanian, the medium Yanshanian and the later Yanshanian. However, the features of folding and thrusting and basin prototypes changed with the different spatial and temporal variation. Especially the structural difference derived from the structural difference of the crystalline basement and the different superposition of different satges of structures. Other evidences show that the Yanshanian tectonic setting under the Neozoic Bohai Bay Basin formed in the compressive setting of the western Pacific continental marginal arc and in the delamination of the sub-crustal lithosphereas well as the intra-crustal escape.
引文
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[19]张旗,钱青,王二七,等.燕山中晚期的中国东部高原:埃达克岩的启示[J].地质科学,2001,36(2):248～255.
[2] 宗国洪,施央申,王秉海,等.济阳盆地中生代构造特征与油气[J].地质论评,1998,44(3):289～294.
[3] 于福生,漆家福,王春英.华北东部印支期构造变形研究[J].中国矿业大学学报,2002,31(4):402～406.
[4] 赵重远,刘池洋.华北克拉通沉积盆地形成与演化及其油气赋存[M].西安:西北大学出版社,1990,1～189.
[5] 赵重远.渤海湾盆地的构造格局及其演化[J].石油学报,1984,5(1):1～18.
[6] 刘池阳.古沧县-天津复向斜和其确定的依据.石油与天然气地质[J],1986,7(4):333～343.
[7] 杜旭东,李洪革,陆克政,等.华北地台东部及邻区中生代(J-K)原型盆地分布及成盆模式探讨[J].石油勘探与开发,1999,26(4):5～9.
[8] 李洪革,杜旭东,陆克政,等.渤海湾地区中西部中生代构造特征及演化[J].石油大学学报,1999,23(3):1～5.
[9] 漆家福,杨池银.黄骅盆地南部前第三系基底中的逆冲构造[J].地球科学,2003,28(1):54～60.
[10]漆家福,杨池银,张俊,等.黄骅盆地孔西潜山前第三系基底内幕构造解析[J].石油与天然气地质,2001,22(1):30～32,37.
[11]张俊,潘懋,漆家福,杨攀新.黄骅盆地孔西构造带的构造几何学特征[J].北京大学学报,2002,38(4):524～530.
[12]程浴淇.中国区域地质概论[M].北京:地质出版社,1994,P1～512.
[13]候贵廷,钱祥麟,蔡东升.渤海—鲁西地区白垩—早第三纪裂谷活动—火山岩的地球化学证据[J].地质科学,2003,38(1):13～21.
[14]朱光,牛漫兰,刘国生,王道轩,宋传中.郯庐断裂带早白垩世走滑运动中的构造、岩浆、沉积事件[J].地质学报,2002,76(3):325～334.
[15]田克勤,于志海,冯明,杨池银,廖前进,周建生,孙晓明等.渤海湾盆地下第三系深层油气地质与勘探[M].北京:石油工业出版社,2001,P1～288.
[16]蔡希源,王根海,迟元林,王同和,汪泽成,赵宗举,等.中国油气区反转构造[M].北京:石油工业出版社,2001,P1～556.
[17]SengorA.M.C.,Natal'inB.A..PaleotectonicsofAsia:fragmentsofasynthesis[A].In:YinAn,HarrisonM[C].ThetectonicevalutionofAsia.CambridgeUniversityPress,1996,P487～614.
[18]吴福元,孙德有,张广良,任向文.论燕山运动的深部地球动力学本质[J].高校地质学报,2000,6(3):379～388.
[19]张旗,钱青,王二七,等.燕山中晚期的中国东部高原:埃达克岩的启示[J].地质科学,2001,36(2):248～255.
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