东海盆地长江坳陷新生代反转构造研究
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摘要
通过对长江坳陷中的反转构造研究,认为在长江坳陷中与反转构造相关的背斜构造、推覆构造、地垒构造对油气的存储具有很重要的意义。长江坳陷的构造演化阶段划分为五期:晚白垩世古新世断陷阶段;古新世末期始新世早期挤压反转阶段;始新世坳陷阶段;始新世末期的构造抬升阶段;中新世后的区域沉降阶段。用平衡剖面的方法验证了所解释的地震剖面的合理性,模拟了剖面中重点构造的形成与演化过程,定量地描述了地层拉伸、地层缩短量及褶皱隆升量,为研究有利圈闭提供了重要参考数据。
In terms of study on inversion tectonics of Changjiang depression, East China sea basin, it is suggested in this paper that the anticlines, nappes and lifted blocks related to inversion tectonics in Changjiang depression are of important significance for oil and gas trap formation. Tectonic evolution in the Changjiang depression can be subdivided into five stages: 1. fault depression in Late Cretaceous - Paleocene; 2. structural reversion in Late Paleocene - Early Eocene; 3. depression in Eocene; 4. structural uplift in Late Eocene; 5. regional sedimentation after Miocene. The technique of balanced cross section is used to identify the reasonability of explanation of seismic sections, to model the formation and evolution of key structures in sections, and to describe the crust extension and shortening and fold uplift quantitatively, which can provide important information for studying favorable traps.
In terms of study on inversion tectonics of Changjiang depression, East China sea basin, it is suggested in this paper that the anticlines, nappes and lifted blocks related to inversion tectonics in Changjiang depression are of important significance for oil and gas trap formation. Tectonic evolution in the Changjiang depression can be subdivided into five stages: 1. fault depression in Late Cretaceous - Paleocene; 2. structural reversion in Late Paleocene - Early Eocene; 3. depression in Eocene; 4. structural uplift in Late Eocene; 5. regional sedimentation after Miocene. The technique of balanced cross section is used to identify the reasonability of explanation of seismic sections, to model the formation and evolution of key structures in sections, and to describe the crust extension and shortening and fold uplift quantitatively, which can provide important information for studying favorable traps.
引文
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舒良树,周新民.2002.中国东南部晚中生代构造作用.地质论评,48:249-260.
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XiaoGuolinandZhouCaifan.1995.DiscussionontheYuquanmovementsintheEastChinaSeashelfbasin.JournalofO ceanUniversityofQingdao,24(4):488-494(inChi nesewithEnglishabstract).
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郭令智,施央申,马瑞士.1983.西太平洋中、新生代活动大陆边缘和岛弧构造的形成及演化.地质学报,57(1):11-21.
郭令智,马瑞士,朱文斌,卢华复,施央申.2001.再论西太平洋活动大陆边缘中-新生代弧后盆地的成因分类和演化模式.见:华南板块构造.北京:地质出版社,192-215.
舒良树,周新民.2002.中国东南部晚中生代构造作用.地质论评,48:249-260.
王国纯.1995.中国近海盆地的正反转构造及其石油地质意义.中国海上油气地质,9(1):33-40.
肖国林,周才凡.1995.论东海陆架盆地玉泉运动.青岛海洋大学学报,25(4):488-494.
许薇龄,乐俊英.1988.东海的构造运动及演化.海洋地质与第四纪地质,8(1):9-21.
周祖翼,贾健谊,李家彪,杨凤丽.2002.东海西湖凹陷反转构造定量研究来自裂变径迹分析数据的约束.海洋地质与第四纪地质,22(1):63-67.
AubouinJ.1990.ThewestPacificgeodynamicmodel.Tectono physics,183:1-7.
DeweyJF,CandeSandPitmanWC.1989.TectonicevolutionoftheIndia/Eurasiacollisionzone.EclogaeGeolHelv,82:717-734.
GuoLingzhi,ShiYangshenandMaRuishi.1983.Onthefor mationandevolutionoftheMesozoic-Cenozoicactivecon tinentalmarginandislandarctectonicsofthewesternPa cificocean.ActaGeologicaSinica,57(1):11-21(inChinesewithEnglishabstract).
GuoLingzhi,MaRuishi,ZhuWenbin,LuHuafuandShiYang shen.2001.Discussiononthegeneticclassificationande volutionofMesozoic-CenozoicbackarcbasininwesternPacificactivecontinentalmargin.In:ThePlateTectonicsofSouthChina.Beijing:GeologicalPublishingHouse,192-215(inChinesewithEnglishabstract).
ShuLiangshuandZhouXinmin.2002.LateMesozoictectonismofsoutheastChina.GeologicalReview,48:248-260(inChinesewithEnglishabstract).
TamakiKandHonzaE.1991.Globetectonicsandformationofmarginalbasins: roleofthewesternPacific.Episodes,14(3):224-230.
TapponnierP,PeltzerGandArmijoR.1986.Onthemechan icsofthecollisionbetweenIndiaandAsia.In:CollisionTectonics, editedbyCowardMPandRiesAC.GeoSocSpecPubl,19:115-157.
UyedaS.1983.Comparativesubductology.Episodes,2:19-34.WangGuochun.1995.PositiveinversionstructuresandtheirsignificancetopetroleumgeologyinChinaoffshorebasins.ChinaOffshoreOilandGas(Geology),9(1):33-40(inChinesewithEnglishabstract).
XiaoGuolinandZhouCaifan.1995.DiscussionontheYuquanmovementsintheEastChinaSeashelfbasin.JournalofO ceanUniversityofQingdao,24(4):488-494(inChi nesewithEnglishabstract).
XuWeilingandLeJunying.1988.TectonicmovementandEvo lutionoftheEastChinaSea.MarineGeology&QuaternaryGeology,8(1):9-21(inChinesewithEnglishab stract).
ZhouZuyi,JiaJianyi,LiJiabiaoandYangFengli.2002.QuantitativestudyoninversionstructuresinXihuDepres sion,EastChinaSea:Constraintsfromfissiontrackanaly sisdata.MarineGeology&QuaternaryGeology,22(1):63-67(inChinesewithEnglishabstract).
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