摘要
Thebasin-rangecouplingrelationisaleadingsubjectofthemoderngeology.Ingeometry,relationsofthistypeincludecouplingsbetweenstretchedorogenicbeltanddown-faultedbasin,compressionalorogenicbeltandforelandbasin,strike-sliporogenicbeltandstrike-slipbasinandsoon.Faultchainsarethekeyforthesecouplingsandtherearetypicalexamplesforallthesecases.TheNorthChinadown-faultedbasiniscoupledwestwiththeTathanguplift,eastwiththeJiao-LiaoMountains,northwiththeYanshanorogenicbeltandsouthwiththeDabieorogenicbelt,thatistosay,thecentraldown-faultedbasinandthesurroundingorogenicbeltsbearacouplingrelationwithinauniformdynamisticsystem.Studyshowsthatthecentraldown-faultedbasinandtheNorthChinamantlesub-plumestructurehaveacloserelationduringtheirformation.Owingtointensivemantlesub-plumeuplifting,thebottomofthelithospheresufferedfromresistance,whichcausedthelithosphereoftheeasternNorthChinatobeheated,thinnedandfault-depressed.Meanwhile,mantlerocksthatweredetachedoutwardsintheshapeofmushroomwasdissectedbysurroundingductileshearingzones,whichleadtodecompressionandunloadingtogeneratehypomagmas,andaseriesofmantle-branchstructureswereformedaroundthedown-faultedbasin.Thereisanobviouscomparabilityamongthesemantlebranchstructures(orogenicbelts),andtheyhavebasin-rangecouplingrelationswiththecentraldown-faultedbasins.
出版日期
2004年01月11日(中国期刊网平台首次上网日期,不代表论文的发表时间)