45581.潿西南凹陷斷裂系統(tǒng)形成和演化及其對沉積的控制作用

1、中國石油大學(xué)（北京）碩士學(xué)位論文潿西南凹陷斷裂系統(tǒng)形成和演化及其對沉積的控制作用姓名：孟令箭申請學(xué)位級別：碩士專業(yè)：構(gòu)造地質(zhì)學(xué)指導(dǎo)教師：童亨茂20080501TheFormationandEvolutionofFaultSysteminWeixinanSagandItsControlonDepositionAbstractUnderthedirectionofcontemporarytectonicgeologyandbasinanal

2、ysisthecharacterofCenozoicfaultssystemiSanalyzedinWeixinansagbasedonthetectonicinterpretationof3Dseismicdata；then，combinedthecompileandanalysisofbalancedgeologicalevolutionsection，confirmthetectonicevolutionaryphaseandev

3、olutionaryfeatureandregularoffaultsysteminWeixinansag，furtherproposedynamicmechanismofinWeixinansagthroughsandboxsimulationexperiment；atlast，integratedprevioussedimentaryfaciesresearch，analyzecontrolactionoffaultoncompos

4、ition，depocenterandsedimentaryfaciesinWeixinansag，putforwardseveralconclusionsasfollows：①ThemainstructureofWeixinanSagisaduplexhalfgrabenbasinwithfaultednorthernsideandoverlappedsouthernside，whichcontrolledbythelistric，r

5、ampfiatboundaryfault；②ThetectonicevolutionofWeixinanSagexperiencestwofaultdepressionphasesandonedepressionphase：WeixinansagoccurthefirstfaultdepressioninthePaleocenetomiddleEoceneandthesecondfaultdepressionOccurduringthe

6、LateEocenetoOligocenewhichjSthemainfaultdepressionphaseofBeibuwanBasin；BeibuwanBasinenterdepressionphasesinceNeogene3(9ThesandboxsimulationexperimentthatextendinharmoniousinsouthtonorthSuccessfullyreconstructthecomplicat

7、edfaultsystemofthemainfaultdepressionphaseinWeixinanSagandconfirmformingmechanismofWeixinansag：themainfaultdepressionphaseofWeixinansagformsgraduallyduringprogressivedeformationwithinharmoniousextensioninsouthtonorth④The

8、basementfaultofNo1andNo2playsadominantroleincontrollinginthestructureofSagandmigrationofthedepocenterandconstitutetectoniclithofaciesmodeinWeixinansa2Keywords：WeixinanSag，RiftBasin，F(xiàn)aultSystem，ExtensionalAction，SandBoxSi