Evolution of the deformation and stress patterns of the East Asia continent under multi-driving force*-中国Betway体育网页登陆

摘要 TheIndiaplate(scontinuousmotiontothenorth,theconvectiveremovaltothethickeninglithospherecausedbysmall-scalemantleconvectionandtheeffectofdenudationontheupliftedplateauareregardedasmaindrivingforcesthatmakethepatternsofstressfieldofEastAsiacontinentatpresenttime.ThemethodofnumericalsimulationisusedtostudythedeformationandthestressfieldofEastAsiacontinentunderdifferentboundaryconditions,differentdenudationcoefficientsanddifferentrockmechanicsparameterswithinatrapezoidgeologicalframe.Comparingwiththeresultsobtainedbymodernspacegeodetictechnique(suchasGPS)theresultsderivedfromseismologicaldatashowthatthepredicteddatabyourmodelcanfitthemverywell.Thedegreeofthefitnessinthewestisbetterthanthatintheeast.TheseresultsimplythatthemaindrivingforceofthedeformationandthestresspatternsofthewestpartofEastAsiacontinentmaycomefromthecollisionandcompressionbetweentheIndiaandtheEurasiaplates.TheinteractiontothePacificandthePhilippinesplatesintheeastpartneedtobeconsidered.Italsoshowsthattheconvectiveremovaltothethickeninglithospherecausedbysmall-scalemantleconvectionandtheeffectofdenudationcannotbenegligibleintheevolutionofthestresspatterns.

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Evolution of the deformation and stress patterns of the East Asia continent under multi-driving force*

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