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时间:2020-05-20
《银川盆地构造反转及其演化与叠合关系分析-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2014年6月,第20卷,第2期,277—285页June2014,Vo1.20,No.2,PP.277—285银川盆地构造反转及其演化与叠合关系分析侯旭波,尹克敏,林中凯,韩秀艳,陈伟1.中国石化胜利油田分公司西部新区研究中心,东营257100;2.中国石化江苏油田分公司地质科学研究院,扬州225009摘要:以银川盆地构造反转为研究对象,从构造反转证据、反转时期以及反转强度等方面进行了分析,以此为基础,探讨了银川盆地中生代以来构造演化。研究表明:负反转构造的发育、新生界与中一古生界地层展布特征的差异性以及伸展构造样式与挤压构造样式
2、并存等方面证明银川I盆地发生负反转;构造反转的挤压隆升时期为晚侏罗世,伸展沉降期为渐新世至新近纪;银川盆地北部构造反转强度大于南部,西部反转强度大东部;银川盆地自中生代以来经历了三叠纪至早一中侏罗世时期的整体沉降、晚侏罗世的挤压隆升与差异剥蚀、早白垩世的再次沉降、白垩纪末期至新生代早期的整体隆升剥蚀、渐新世至新近纪的快速断陷以及第四纪的整体拗陷六个演化叠合阶段。关键词:银川盆地;盆地演化;负反转构造;构造样式;反转强度中图分类号:P542.2文献标识码:A文章编号:1006—7493(2014)02—0277—09TheStudyo
3、fTectonicInversion,Evolution,andSuperposition曙阻ofYinchuanBasin高HHOUXubo’,YINKemin’,LINZhongkai’,HANXiuyan’,CHENWei校1.ResearchCenterofNewDistrictinWestChina,ShengliOilfieldCompany,SINOPEC,Dongying257100,China地2.GeologicalScientificResearchInstitute,JiangsuOilfieldCompan
4、y,SINOPEC,Yangzhou225009,Chinaa质Abstract:ThetectonicinversionofYinehuanBasinwasstudiedfrominversionevidence,inversionperiod,andinversionintensity.Inaddition,学the啷evolutionandsuperpositionofYinchanBasinwerediscussed.TheresultsshowthatthetectonicinversionofYinchuanBasinw
5、asconfirmedbydevelopmentofnegativeinversionstructures.thedifferenceindistributioncharacteristicsoftheCenozoicand报Mesozoic—Palaeozoicformation,existingofextensionandextrusionstructuralstyle.TheextrusionandupliftingperiodoftectonicinversionisLateJurassic,andtheextensiona
6、ndsubsidenceperiodisfromOligocenetoNeogene.Theinversionintensityisstrongerinthenorthernandwesternregionsofthebasinthaninthesouthernandeasternregions.YinchuanBasinhasexperiencedsixstagesofevolutionandsuperpositionsinceMesozoic,includingintegralsubsidencefromTriassictoEa
7、rly-MidJurassic,extrusionupliftingandunevendenudationinLateJurassic,againsubsidenceinearlyCretaceous,integralupliftingdenudationfromLateCretaceoustoEarlyCenozoic,rapidfaultingrelateddepressionfromOligocenetoNeogene,andintegraldepressioninQuaternary.Keywords:YinchuanBas
8、in;basinevolution;negativeinversionstructure;structuralstyle;inversionintensityFirstauthor:HOUXubo,Ph.D.,Engineer;E—m
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