简介:Since1993,thefirstauthorhasexpandedhisresearchongeotectonicsfromChinatothegloble,andhasputforwardhisownnewconceptsinglobaltectonics:TheoryofIntegratedPolygeneticGeotectonics.In2001,heandhiscoworkerspublishedtheirworks:twomapsandadetailedexplanatorynotebyGeologicalPublishingHouseofChina.
简介:BiostratigraphicaldataindicatethatintheneriticfaciesareasofSouthChina,theDevonian-Carboniferousboundary(DCB),matchingtheboundarybetweenconodontSiphonodellapraesulcatazoneandS.sulcatazone,shouldbedrawnbetweenrugosecoralCystophrentiszoneandPseudouralinazone,i.e.theCystophrentis\Pseudouralinainterval-zone.ThetopofthesealevelfalleventbedneartheDCBislowerthantheboundarybetweenS.praesulcataandS.sulcatazones,buthigherthanthetopoftheCystophrentiszone.SequencestratigraphicalstudyshowsthatthesealevelfalleventbedneartheDCBconstitutestheshelfmarginsystemtract(SMST)ofadepositionalsequence(SQ1)inbothneriticandpelagicfaciesareas.ThetopsurfacesofSMSTofSQ1isslightlylowerthanthebaseofS.sulcatazoneinthepelagicfaciesareas,InneriticfaciesareasofSouthChina,therefore,theDevonian-CarboniferousboundaryismarkedbythemostdistincttransgressivesurfacewithintheCystophrentis\Pseudoura
简介:ThetectonicactivitiesoccurringsincetheCenozoicinthenorthernpartoftheQinghai-TibetPlateau(theregionfromtheEastKunlunMountainstotheTanggulaMountains)wereprobablycausedbytheintenseintraplatedeformationpropagationafterthecollisionbe-tweentheIndianplateandtheEurasianplate.Theirmainexpressionsincludethesubstantialup-liftingoftheplateau,alternationofhorizontalextensionandcompressionundertheverticalgreatestprincipalstressσ1,occurrenceofrift-typevolcanicactivity,formationofthebasin-rangesystem,andsuccessiveeastwardextrusionofblocksresultingfromlarge-scalestrike-slipfaulting.Geophysicalexplorationandexperimentshaverevealedthatthereexistclose-lyalternatinghorizontalhigh-velocityandlow-velocitylayersaswellaslithosphericfaultsofaleft-lateralstrike-slipsenseinthelowerpartofthelithosphere(thelowercrustandlithosphericmantle,60-120kmdeep).Basedonanintegratedstudyofthegeological-geophysicaldataavail-able,theauthorshaveproposedamodelofdeep-seatedmantlediapirandtheassociatedtectonophysicalprocessasthedynamicsourcefortheupliftofthenorthernpartoftheQinghai-TibetPlateau.