摘要
Detailedstudiesofpetrology,palaeocurrentdirection,paiaeogeomorphologyandpalaeohydrody-namicshavebeenconductedforthePermian-TriassicCangfanggouGroupintheforedeepoftheBogdaMountainsinthesoutheasternJunggarBasin,Xinjiang.Sedimentaryenvironmentsandfadesofalluvialfansandpebblybraidedrivers,sandybraidedrivers,meanderingrivers,low-sinuosityrivers,swampsandfresh-waterlakesarerecognizedinthegroup.Climateandtectonicsofsourceareasstronglycontrolledtheevolutionofthesedimentaryenvironmentsandfaciesintheforedeep.TheblockfaultingintheBogdaMountainsincreasedthegroundslope,whichledtoadrasticincreaseinthegrainsizeofthesediments.Humidclimate,beingbeneficialtoplantgrowth,wouldprovideprotectionofchannelbanksandatthesametimeweakenchemicalweatheringinthesourcearea,thuslargeamountsofclaymaterialsareavailablefortheformationofclayplugs.Asaresult,stablebanksandmeanderingriverbeltsare
出版日期
2000年04月14日(中国期刊网平台首次上网日期,不代表论文的发表时间)