鄂尔多斯盆地的磁场特征及地质意义
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摘要
文中从地球物理角度对鄂尔多斯盆地航磁特征与地质构造进行了分析,确定了盆地的边界及范围,并在编制鄂尔多斯盆地磁性基底深度图、构造区划图的基础上,对盆地的基底结构、性质及其深度变化特点和构造格局、盖层厚度等方面进行了研究,表明鄂尔多斯盆地基底由前震旦系变质岩系组成,埋深大部分可达3 000～11 000 m,盖层为震旦纪一古生代和中新生代地层;盆地的发生和发展主要受近EW向、NE向和SN向构造制约,多呈隆坳相间排列的特点,盆地构造面貌北部构造走向呈EW向,中东部构造走向呈NE向,西缘构造走向呈SN向。这些认识为今后在该盆地进行油气勘探提供了参考依据。
According to aeromagnetic and gravitational data,the boundary and range of Ordos basin were determined based on an analysis of the characteristics of gravity and magnetic fields. And on the basis of compiling depth map of the metamorphic basement and structuring zoning map,research was conducted on the basin's basement structure,characteristics and features of depth change,structure framework,and caprock thickness. The research indicates that the metamorphic basement is composed of Proterozoic metamorphic series,and the buried depth of crystalline basement can reach 5 000 to 20 000 meters. The caprock is the layers of Ediacaran,Paleozoic,and Mesozoic. The occurrence and development of the basin are restricted by nearly NE-and NWW-trending structures,forming a pattern of four depressions and three uplifts. All the new understanding and conclusions provide a reference for further oil and gas exploration in the basin.
According to aeromagnetic and gravitational data,the boundary and range of Ordos basin were determined based on an analysis of the characteristics of gravity and magnetic fields. And on the basis of compiling depth map of the metamorphic basement and structuring zoning map,research was conducted on the basin's basement structure,characteristics and features of depth change,structure framework,and caprock thickness. The research indicates that the metamorphic basement is composed of Proterozoic metamorphic series,and the buried depth of crystalline basement can reach 5 000 to 20 000 meters. The caprock is the layers of Ediacaran,Paleozoic,and Mesozoic. The occurrence and development of the basin are restricted by nearly NE-and NWW-trending structures,forming a pattern of four depressions and three uplifts. All the new understanding and conclusions provide a reference for further oil and gas exploration in the basin.
引文
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[23]浦仁海,姚宗慧,张艳春.鄂尔多斯盆地古构造演化在气田形成中的作用及意义[J].天然气工业,2000,20(6):27-29.Fu R H,Yao Z R,Zhang Y C.The role and significance of paleotectonic evolution in gas field formation in ordos basin[J].Natural Gas Industry,2000,20(6):27-29.
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[26]杨华,席胜利,魏新善,等.鄂尔多斯多斯回旋回叠合盆地演化与天然气富集[J].中国石油勘探,2006,23(1):17-24.Yang H,Xi S L,Wei X S,et al.Evolution and natural gas enrichment of the ordos cyclotron superimposed basin[J].Petroleum Exploration in China,2006,23(1):17-24.
[27]徐黎明,周立发,张义楷,等.鄂尔多斯多斯盆地构造应力场特征及其构造背景[J].大地构造与成矿学,2006,30(4):455-462.Xu L M,Zhou L F,Zhang Y K,et al.Tectonic stress field characteristics and tectonic background of ordos basin[J].Tectonics and Mineralization,2006,30(4):455-462.
[28]田在义,张庆春.中国含油气沉积盆地论[M].北京:石油工业出版社,1996.Tian Z Y,Zhang Q C.Petroliferous sedimentary basin theory[M].Beijing:China Petroleum Industry Press,1996.
[29]杨华,梁月明.基于航空磁力ΔT异常图的中国断块镶嵌地质构造特征[R].航空物探遥感中心,2011.Yang H,Liang Y M.China fault block Mosaic geological structure characteristics based on theΔT anomaly map[R].Airborne Geophysical and Remote Sensing Center,2011
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[2]白云来,王新民,刘化青,等.鄂尔多斯盆地西缘构造演化与相邻盆地关系[M].北京:地质出版社,2010.Bai Y L,Wang X M,Liu H Q,et al.The relationship between tectonic evolution and adjacent basins in the western margin of ordos basin[M].Beijing:Geological Publishing House,2010.
[3]许效松,刘宝珺,牟传龙,等.中国中西部海相盆地分析与油气资源[M].北京:地质出版社,2004.Xu X S,Liu B J,Mou C L,et al.Marine basin analysis and oil and gas resources in central and western China[M].Beijing:Geological Publishing House,2004.
[4]杨俊杰.鄂尔多斯盆地构造演化与油气分布规律[M].北京:石油工业出版社,2002:104-123.Yang J J.Structural evolution and oil and gas distribution in ordos basin[M].Beijing:Petroleum Industry Press
[5]张抗,邓华盖.鄂尔多斯断块晚元古生代早期发育特征和含油气远景[J].石油勘探与开发,1981(5):18-26.ZhangK,Deng H G.Ordos fault block early late Paleozoic development characteristics and oil and gas prospects,oil exploration and development[J].Petroleum Exploration and Development,1981(5):18-26.
[6]邓军,王庆飞,赵文智,等.鄂尔多斯盆地基底演化及其对盖层控制作用[J].地学前缘,2005,12(3):91-99.Deng J,Wang Q F,Zhao W Z,et al.Basement evolution of ordos basin and its control on caprock[J].Earth Science Frontiers,2005,12(3):91-99.
[7]腾吉文,王运夫,赵文智,等.鄂尔多斯盆地上地壳速度分布与沉积建造和结晶基底起伏的构造研究[J].地球物理学报,2008,51(6):1753-1766.Teng J W,WangY F,Zhao W Z,et al.Velocity distribution of upper crust,undulation of sedimentary formation and crystalline basement beneath the Ordos basin in North China[J].Chinese Journal of Geophysics,2008,51(6):1753-1766.
[8]郑军.鄂尔多斯多斯块体电性结构研究及其与地质构造的关系[D].北京:中国地质大学(北京),2011.Zheng J.Study on the electrical structure of ordos block and its relationship with geological structure[D].Beijing:China university of geosciences(Beijing),2011.
[9]王涛,王文运,赵文智,等.鄂尔多斯及邻区航磁异常特征及其大地构造意义[J].地球物理学报,2007,50(1):163-170.Wang T,Wang W Y,Zhao W Z,et al.Aeromagnetic anomaly analysis of Ordos and adjacent regions and its tectonic implications[J].Chinese journal of geophysics,2007,50(1):163-170.
[10]贾进斗,何国琦,李茂松,等.鄂尔多斯盆地基底结构特征及其对古生界天然气的控制[J].高校地质学报,1997,3(2):144-147.Jia J D,He G Q,Li M S,et al.Characteristics of basement structure and its control over Paleozoic natural gas in Ordos Basin[J].Journal of Geology of Colleges and Universities,1997,3(2):144-147.
[11]李国玉,吕鸣岗,张健,等.中国含油气盆地图集[M].北京:石油工业出版社,2002:199-209.Li G Y,Lv M G,Zhang J,et al.Atlas of petroleum basins in China,petroleum industry press[M].Beijing:Petroleum Industry Press,2001:199-209
[12]管志宁,安玉林.区域磁异常定量解释[M].北京:地质出版社,1991.Guan Z N,An Y L.Quantitative interpretation of regional magnetic anomalies[M].Beijing:Geological Press House,1991.
[13]郭志宏,于长春,周坚鑫.低磁纬度区ΔT剖面磁异常场源深度计算的切线法[J].物探与化探,2003,27(5):391-394.Guo Z H,Yu C C,Zhou J X.Tangent method for depth calculation ofΔT profile magnetic anomaly field[J].Geophysical and Geochemical Exploration,2003,27(5):391-394.
[14]朱英.斜磁化切线法和特征点图解法[M].北京:地质出版社,2012.Zhu Y.Oblique magnetization tangent method and feature point graphic method[M].Beijing:Geological Press House,2012.
[15]熊盛青,范正国,张洪瑞,等.中国陆域航磁系列图(1∶5 000000)及说明书[M].北京:地质出版社,2013.Xiong S Q,Fan Z G,Zhang H R,et al.China land aeromagnetic series(1∶5 000 000)[M].Beijing:Geological Press House,2013.
[16]郑军.鄂尔多斯多斯块体电性结构研究及其与地质构造的关系[D].北京:中国地质大学(北京),2011.Zheng J.Study on the electrical structure of Ordos block and its relationship with geological structure[D].Beijing:China University of Geosciences(Beijing),2013.
[17]丁燕云,李占奎.鄂尔多斯盆地北部航磁反映的构造特征[J].物探与化探,2000,24(3):197-202.Ding Y Y,Li Z K.Structural characteristics of aeromagnetic reflection in northern ordos basin[J].Geophysical and geochemical Exploration,2000,24(3):197-202.
[18]熊盛青,丁燕云,李占奎,等.中国陆域航磁与地质构造特征[M].北京:地质出版社,2016.Xiong S Q,Ding Y Y,Li Z K,et al.China terrestrial aeromagnetic and geological structure characteristics[M].Geological Press,2016.
[19]李斌,孟自芳,宋岩,等.鄂尔多斯盆地西缘构造-沉积响应[J].吉林大学学报:地球科学版,2007,37(4):703-709.Li B,Meng Z F,Song Y,et al.Tectonic-sedimentary response in the western margin of the ordos basin[J].Journal of Jilin University:Geoscience Edition,2007,37(4):703-709.
[20]李道燧,张宗林.鄂尔多斯盆地中部古地貌与构造对气藏的控制作用[J].石油勘探与开发,1994,21(3):9-15.Li S D,Zhang Z L.The control of paleogeomorphology and structure on oil and gas reservoirs in the central ordos basin[J].Petroleum Exploration and Development,1994,21(3):9-15.
[21]李振红,张军,郑聪斌.鄂尔多斯盆地西缘断裂特征与油气运聚研究[J].石油物探,2005,44(3):246-250.Li Z H,Zhang J,Zheng C B.Study on fault characteristics and hydrocarbon migration and accumulation in the western margin of ordos basin[J].Petroleum Geophysical Exploration,2005,44(3):246-250.
[22]王峰,陈洪德,赵俊生,等.鄂尔多斯盆地寒武系-二叠系层序界面类型特征及油气构造意义[J].沉积与特提斯地质,2011,31(1):6-12.Wang F,Chen H D,Zhao J S,et al.Type characteristics of Cambrian-Permian sequence interface and its structural significance[J].Sedimentary and Tethys Geology,2011,31(1):6-12.
[23]浦仁海,姚宗慧,张艳春.鄂尔多斯盆地古构造演化在气田形成中的作用及意义[J].天然气工业,2000,20(6):27-29.Fu R H,Yao Z R,Zhang Y C.The role and significance of paleotectonic evolution in gas field formation in ordos basin[J].Natural Gas Industry,2000,20(6):27-29.
[24]吴银耀,梁兴,陈方海.鄂尔多斯断块新生构造的继承性发育及对油气勘探的启示[J].现代地质,2009,23(4):599-600.Wu Y Y,Liang X,Chen F H.Inheritance and development of newborn structures in ordos fault blocks and its implications for oil and gas exploration[J].Modern Geology,2009,23(4):599-600.
[25]罗建强,何忠明.鄂尔多斯盆地中生代构造演化特征及油气分布[J].地质与资源,2008,17(2):35-138.Luo J Q,He Z M.Tection evolution and oil gas distribution in the Mesozoic Ordos basin[J].Geology and Resources,2008,17(2):35-138.
[26]杨华,席胜利,魏新善,等.鄂尔多斯多斯回旋回叠合盆地演化与天然气富集[J].中国石油勘探,2006,23(1):17-24.Yang H,Xi S L,Wei X S,et al.Evolution and natural gas enrichment of the ordos cyclotron superimposed basin[J].Petroleum Exploration in China,2006,23(1):17-24.
[27]徐黎明,周立发,张义楷,等.鄂尔多斯多斯盆地构造应力场特征及其构造背景[J].大地构造与成矿学,2006,30(4):455-462.Xu L M,Zhou L F,Zhang Y K,et al.Tectonic stress field characteristics and tectonic background of ordos basin[J].Tectonics and Mineralization,2006,30(4):455-462.
[28]田在义,张庆春.中国含油气沉积盆地论[M].北京:石油工业出版社,1996.Tian Z Y,Zhang Q C.Petroliferous sedimentary basin theory[M].Beijing:China Petroleum Industry Press,1996.
[29]杨华,梁月明.基于航空磁力ΔT异常图的中国断块镶嵌地质构造特征[R].航空物探遥感中心,2011.Yang H,Liang Y M.China fault block Mosaic geological structure characteristics based on theΔT anomaly map[R].Airborne Geophysical and Remote Sensing Center,2011
[30]内蒙古地质矿产局.内蒙古区域地质志[M].北京:地质出版社,1991.Bureau of geology and mineral resources of Inner Mongolia.Regional geology of Inner Mongolia[M].Beijing:Geological Publish-
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