%0 Journal Article
%T EarlyCretaceousPaleoclimateCharacteristicsofChina:CluesfromContinentalClimate-indicativeSediments
%A XIANG
%A Fang*
%A ZHANG
%A Deyan
%A CHEN
%A Kang
%A and
%A FENG
%A Qin
%J µØÖÊѧ±¨
%P 1307-1318
%D 2015
%X TheCretaceouswasoneofthemostremarkable¡®greenhouse¡¯climateperiodsingeologicalhistory.MostofthereportedstudiesoftheCretaceouspaleoclimatearebaseduponmarinesedimentaryrecords.Largespatialscalepaleoclimaticreconstruction,whichhasahighertimeresolutionbaseduponcontinentalsedimentsinChina,israrelyfound.ThisstudypresentspaleoclimatereconstructionforthesixtimeperiodsoftheEarlyCretaceousinChinabyemployingcontinentalclimate-indicativesediments,includingcalcareousdeposits,coal,oilshale,gypsum,halite,desertsedimentarysystems,ferruginousdepositsandlaterite,copper-bearingdeposits,limestoneanddolomite.Basedonthedistributionoftheassociationofclimate-indicativesedimentsandtheinfluencesofpaleotopographyandorogenicbelts(orimportantstructuralbelts)onclimate,sevenclimaticzoneshavebeenidentified:1)awarmandhumidzone;2)awarmandhumid-warmandaridzone;3)awarmandaridzone;4)anaridandhotzone;5)theTibethotandhumidzone;6)ahotandarid-semiaridzone;and7)ahotandhumid-hotandaridone.ItisfoundthattheEarlyCretaceousclimaticzonesofChinawerenearlylatitudinallydistributedfromnorthwesttosoutheast.Thearid-hotclimaticzoneexpandedintheAptian,suggestingthatahotteranddrierclimateprevailedinlaterperiodoftheEarlyCretaceous.Conversely,thehumidclimaticzoneexpandedintheAlbian,indicatingthatawetterclimateappearedattheendoftheEarlyCretaceous.Theoveralldistributionpatternofthesevenclimaticzonesindicatesthatahot-warmandaridclimatewaspredominantinChina;thiscoincideswithaglobal¡®greenhouseclimate¡¯background.However,palaeogeographicfeaturesandspecificgeologicevents,suchastheexistenceanddisappearanceoftheeasternhighplateau,andtheupliftanddenudationofYinshan,Yanshan,Tianshan,QinlingandDabieMountains,ledtodistinctiveregionalclimaticfeaturesoftheCretaceousinChina.
%K EarlyCretaceous
%K paleoclimate
%K continentalclimate-indicativesediments
%K climaticzone
%U http://www.geojournals.cn/dzxb/ch/reader/view_abstract.aspx?file_no=201504017&flag=1