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1、萬方數(shù)據(jù)???m ?S2??￡U¤。?￥???§¨???、 ?-??a??￡?d???h????X，?ˉ°??ì±2、3???e、μ???、??1??d°?t。5????ó??àWU?￡?-?ˉ?há?????ˉ??。e?=m2??：°?±2??2?，?3.5km。????，?????，1??tl，¨èéê2?m?￥ìí?S2，?*，???，???ó1?，2?éêl?S??-×?éê；ùúS??、??R??ó1?，2?S?ü-×?-Y▲T?àá?éê；a??????、?????
2、?，2?Sóèééê。*èéê2?m??、ê?S2，ó?ìí??2?S??、e??a??ò，2?S?hó??éê。?÷ìS???ê????，??ìéê、?hó??éê；?éêì??，?§¨???tU?￡??,??¨l?、¨ù??ˉ?ú，?*?üy,?2?St???ù?，????ó??；/?y,?S?l?，ù?t??；ó?y?ü??，、*ó?ù?V。*ó? ?，V?ù???d；?÷ *?÷?，??ù????1á?，*?÷ ?，????S11ù?。?，????、D?
3、:?，U ?¨è-*è??h???ˉ??，5??maya、AEtàW°??u?h??,????á?、??
4、。?： ?；-；éêì；¨?；?ó??I萬方數(shù)據(jù)AbstractLiujiangriverbasinisthemainresearchareaofthisthesis.Fieldinvestigation,sampling,mainsectionofprofilemapdrawing,chipgrindingandinteriormicroscopicanalysisweredoneonthebasiso
5、fcomprehensivecollectionofexistingresearchresultsandallkindsofgeologicaldataofthePaleozoicandMesozoicstratainliujiangriverbasin,northChina.DigitalsimulationsoftwarewasusedtostimulatethegeologicalevolutionofupperPalaeozoicandMesozoicinthestudyarea.Thefollowingmainresultswe
6、reasfollows:Twofieldprofiles(about3.5km)weremeasured.Throughon-siteinvestigation,sampling,chipgrinding,microscopicanalysis,itwasknownthatthesedimentofupperpaleozoicweremainlyterrigenousclasticrocks.Amongthem,thebenxiformationcontainedshaleandlimestonelens,andthemainsedime
7、ntaryenvironmentwastidalflat-lagoon;Taiyuanformationcontainedshale,sandstoneandlimestonelens,andthesedimentaryenvironmentwastidalflat-lagoon-restrictedcarbonateplatformdeposits;Shanxiformationwasconsistedofgrayshale,sandstonewithcoalseam,anditwasmainlydeltadeposits.TheMes
8、ozoicdepositsaremainlycomposedofsandstoneandconglomerate,UpperTriassicXingshikouformationweremainlysandstone,siltstoneandmudstonelayer,andthesedimentaryenvironmentwasmainlymeanderingriverdeposit.LowerHuayuanformationofLowerJuracontainssandstoneconglomerateandcoalseam,andt
9、hesedimentaryenvironmentincludedlakefacies,braidedriversedimentary.Inordertorestorethepaleoenvir
