BASIN-RANGE SYSTEM EVOLUTION OF QINLING-DABIE OROGENIC BELT AND ITS IMPACT ON REGIONAL ENVIRONMENT

(整期优先)网络出版时间:2004-01-11
/ 1
Asthestructuralbodyrelatedtotemporal-spatialevolutionandtectonicdynamicsystem,theorogenicbeltandbasinarenotonlydependentoneachotherinspacebutalsocloselyrelatedwitheachotherintermsofinfrastructure,mattertransferenceanddynamicmechanisms.Byusingapatitefission-trackmethod,theauthorsfirstlyanalyzetheupliftanddenudationratiosoftheQinling-Dabieorogenicbelt,andbyusingtectonicallydeformedcombinationanalysisandtectonic-thermalsimulationthemaingeologicaloccurrencesarealsoillustrated.Itisfoundthattheremusthavehadmulti-phasedifferentialupliftanddenudationphenomenaintheQinling-DabieorogenicbeltduringtheMesozoic-Cenozoic.Then,theregionalevolutionpatternofqualitativeandquantitativedenudationprocessisobtainedduringthepost-orogenicperiod.Onthebasisofsummarizingevolutionprocessofthebasin-rangesystemintheQinling-DabieorogenicbeltduringtheMesozoic-Cenozoicanditseffectsonregionalenvironment,theinfluenceofevolutionprocessongeomorphologiclandscapeschange,watersystemvicissitude,eco-environmentsuccessionanddrainagebasinsystemevolutionisdiscussed.