花岗岩体的冲断变形——以酒泉盆地东部金佛寺花岗岩为例
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摘要
根据对酒泉盆地东部金佛寺花岗岩体野外变形特征调查和地震剖面解释的研究,分析了金佛寺花岗岩体受后期区域构造作用的冲断变形特征,认为该岩体在晚新生代以来发生了强烈的冲断作用,岩体平均推覆距离大于15km。在主冲断层和次级冲断层的控制下,岩体内部发生了强烈的构造变形,形成了复杂的断层传播褶皱。主逆冲断层的下盘掩覆了酒泉盆地中、新生代前陆坳陷的一部分,发育了一受控于深部滑脱断层的断层传播褶皱。
This paper analyzes the thrust deformation features of the Jinfosi pluton in the eastern Jiuquan Basin which were controlled by the effect of later regional structure, and presents the deformation mode of the pluton, based on investigating the field deformation features and interpreting the seismic profiles which passed the pluton. The authors consider that Jinfosi pluton was influenced by intensive thrusting action,and the average distance of thrusting was more than 15 km.Controlled by the main thrust fault and secondary thrust faults, the interior pluton was deformed intensively,and a complex fault-propagation fold was formed.Under the main thrust fault is a part of the Mesozoic and Cenozoic foreland depression of Jiuquan Basin.
This paper analyzes the thrust deformation features of the Jinfosi pluton in the eastern Jiuquan Basin which were controlled by the effect of later regional structure, and presents the deformation mode of the pluton, based on investigating the field deformation features and interpreting the seismic profiles which passed the pluton. The authors consider that Jinfosi pluton was influenced by intensive thrusting action,and the average distance of thrusting was more than 15 km.Controlled by the main thrust fault and secondary thrust faults, the interior pluton was deformed intensively,and a complex fault-propagation fold was formed.Under the main thrust fault is a part of the Mesozoic and Cenozoic foreland depression of Jiuquan Basin.
引文
①杨树锋,陈汉林,等.2002.酒泉盆地构造特征和控油作用.浙江大学地球科学系,玉门油田公司勘探开发研究院.
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樊光明,张智勇,顾延生,等.2003.祁连山东南缘第四纪以来的隆升作用及动力学分析.地球科学,28(4):389394.[FanGuangming,ZhangZhiyong,GuYansheng,etal.2003.UpliftingsinceQuaternaryinsoutheasternQilianMountainsanditsdynamicanalysis.EarthScience,28(4):389394(inChinesewithEnglishabstract)]
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陆洁民,郭召杰,赵泽辉,等.2004.新生代酒西盆地沉积特征及其与祁连山隆升关系的研究.高校地质学报,10(1):5061.[LuJiemin,GuoZhaojie,ZhaoZehui,etal.2004.CenozoicsedimentatiocharacteristicsofJiuxiBasinanduplifthistoryofnorthernQiliaMountain.GeologicalJournalofChinaUniversities,10(1):5061(inChinesewithEnglishabstract)]
MeyerB,TapponnierP,BourjotL.1998.CrustalthickeninginGansuQinghailithosphericmantlesubduction,andoblique,strikeslipcontrolledgrowthoftheTibetplateau.Geophys.J.Int.,135:147.
ShankarMitra.1990.Faultpropagationfolds:geomerry,kinematicevolution,andhydrocarbontraps.AAPG,74(6):921945.
王洪潜.1993.酒泉盆地构造特征及找油方向.石油勘探与开发,20(增刊):1519.[WangHongqian.1993.AdiscussionofthetectonicsandpetroleumexplorationofJiuquanBasin.PetroleumExplorationandDevelopment,20(suppl.):1519(inChinesewithEnglishabstract)]
肖庆辉,邢作云,张星,等.2003.当代花岗岩研究的几个重要前沿.地学前缘,10(3):221229.[XiaoQinghui,XingZuoyun,ZhangXing,etal.2003.Themajorfrontiersoftherecentstudiesofgranite.EarthScienceFrontiers,10(3):221229(inChinesewithEnglishabstract)]
杨坤光,刘强.2002.花岗岩构造与侵位机制研究进展.地球科学进展,17(4):546550.[YangKunguang,LiuQiang.2002.Advancesinresearchofgraniticstructuresandemplacementmechanisms.AdvanceinEarthSciences,17(4):546550(inChinesewithEnglishabstract)]
张德全,孙桂英,徐洪林.1995.祁连山金佛寺花岗岩体的岩石学和同位素年代学研究.地球学报,37(4):375385.[ZhangDequan,SunGuiying,XuHonglin.1995.PetrologyandisotopechronologyoftheJinfosiPluton,QilianMts.,Gansu.ActaGeoscientiaSinica,37(4):375385(inChinesewithEnglishabstract)]
赵贤正,夏义平,潘良云,等.2004.酒泉盆地南缘山前冲断带构造特征与油气勘探方向.石油地球物理勘探,39(2):222227.[ZhaoXianzheng,XiaYiping,PanLiangyun,etal.2004.CharactersandoilreconnaissancedirectionofforemountainthrustbeltinsouthmarginofJiuquanBasin.PetroleumGeophysicsExploration,39(2):222227(inChinese)]
①杨树锋,陈汉林,等.2002.酒泉盆地构造特征和控油作用.浙江大学地球科学系,玉门油田公司勘探开发研究院.
②陈建平,黄第藩,等.1995.酒东盆地营尔凹陷油气生成运移和评价.石油勘探开发研究院地质所,玉门石油管理局勘探开发研究院.
①陈建平,黄第藩,等.1995.酒东盆地营尔凹陷油气生成运移和评价.石油勘探开发科学研究院地质所,玉门石油管理局勘探卡法研究院.
樊光明,张智勇,顾延生,等.2003.祁连山东南缘第四纪以来的隆升作用及动力学分析.地球科学,28(4):389394.[FanGuangming,ZhangZhiyong,GuYansheng,etal.2003.UpliftingsinceQuaternaryinsoutheasternQilianMountainsanditsdynamicanalysis.EarthScience,28(4):389394(inChinesewithEnglishabstract)]
葛肖虹,刘俊来.1999.北祁连造山带的形成与背景.地学前缘,6(4):223230.[GeXiaohong,LiuJunlai.1999.FormationandtectonicbackgroundofthenorthernQilianorogenicbelt.EarthScienceFrontiers,6(4):223230(inChinesewithEnglishabstract)]
GeorgeAD,MarshallseaSJ,WyrwollKH.2001.MiocenecoolinginthenorthernQilianShan,northeasternmarginoftheTibetanPlateau,revealedbyapatitefissiontrackandvitrinitereflectionanalysis.Geology,29:939942.
郭令智,施央申,卢华复,等.1992.印藏碰撞的两种远距离构造效应.见:施央申等编,现代地质学研究文集(上).南京:南京大学出版社,18.[GuoLingzhi,ShiYangshen,LuHuafu,etal.1992.TwokindsofremotestructuraleffectsresultingfromtheIndiaandQinghai-Tibetcollision.In:ShiYangshenetal,eds.SymposiumoftheResearchesonModemGeology(Ⅰ),Nanjing:NanjingUniversityPress,18(inChinesewithdetailedEnglishabstract)]
洪大卫.1989.花岗岩的变形构造和定位机制.岩石矿物学杂志,8(2):120130.[HongDawei.1989.Thestructuraldeformationandemplacementmechanismsofgranites.ActaPetrologicaetMineralogica,8(2):120130(inChinesewithEnglishabstract)]
黄华芳,郑国冬,方国庆,等.1993.酒西盆地南缘推覆构造及其含油领域.石油与天然气地质,14(3):181190.[HuangHuafang,ZhengGuodong,FangGuoqing,etal.1993.NappeStructuresinsouthmarginofJiuxiBasinanditsoilbearingareas.Oil&GasGeology,14(3):181190(inChinesewithEnglishabstract)]
李相博,郭彦如,王新民,等.2002.酒泉盆地南缘推覆构造特征及油气勘探方向.新疆石油地质,23(4):299301.[LiXiangbo,GuoYanru,WangXinmin,etal.2002.CharacteristicsofNappeStructuresinsouthmarginofJiuquanBasinandoilreconnaissancedirection.XinjiangPetroleumGeology,23(4):299301(inChinese)]
陆洁民,郭召杰,赵泽辉,等.2004.新生代酒西盆地沉积特征及其与祁连山隆升关系的研究.高校地质学报,10(1):5061.[LuJiemin,GuoZhaojie,ZhaoZehui,etal.2004.CenozoicsedimentatiocharacteristicsofJiuxiBasinanduplifthistoryofnorthernQiliaMountain.GeologicalJournalofChinaUniversities,10(1):5061(inChinesewithEnglishabstract)]
MeyerB,TapponnierP,BourjotL.1998.CrustalthickeninginGansuQinghailithosphericmantlesubduction,andoblique,strikeslipcontrolledgrowthoftheTibetplateau.Geophys.J.Int.,135:147.
ShankarMitra.1990.Faultpropagationfolds:geomerry,kinematicevolution,andhydrocarbontraps.AAPG,74(6):921945.
王洪潜.1993.酒泉盆地构造特征及找油方向.石油勘探与开发,20(增刊):1519.[WangHongqian.1993.AdiscussionofthetectonicsandpetroleumexplorationofJiuquanBasin.PetroleumExplorationandDevelopment,20(suppl.):1519(inChinesewithEnglishabstract)]
肖庆辉,邢作云,张星,等.2003.当代花岗岩研究的几个重要前沿.地学前缘,10(3):221229.[XiaoQinghui,XingZuoyun,ZhangXing,etal.2003.Themajorfrontiersoftherecentstudiesofgranite.EarthScienceFrontiers,10(3):221229(inChinesewithEnglishabstract)]
杨坤光,刘强.2002.花岗岩构造与侵位机制研究进展.地球科学进展,17(4):546550.[YangKunguang,LiuQiang.2002.Advancesinresearchofgraniticstructuresandemplacementmechanisms.AdvanceinEarthSciences,17(4):546550(inChinesewithEnglishabstract)]
张德全,孙桂英,徐洪林.1995.祁连山金佛寺花岗岩体的岩石学和同位素年代学研究.地球学报,37(4):375385.[ZhangDequan,SunGuiying,XuHonglin.1995.PetrologyandisotopechronologyoftheJinfosiPluton,QilianMts.,Gansu.ActaGeoscientiaSinica,37(4):375385(inChinesewithEnglishabstract)]
赵贤正,夏义平,潘良云,等.2004.酒泉盆地南缘山前冲断带构造特征与油气勘探方向.石油地球物理勘探,39(2):222227.[ZhaoXianzheng,XiaYiping,PanLiangyun,etal.2004.CharactersandoilreconnaissancedirectionofforemountainthrustbeltinsouthmarginofJiuquanBasin.PetroleumGeophysicsExploration,39(2):222227(inChinese)]
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