古南海与南海海盆的构造演化关系

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1、万方数据古南海与南海海盆的构造演化关系TherelationshipoftectonicevolutionbetweentheProto—SouthChinaSeaandtheSouthChinaSeaBasinAbstractneSouthChinaSeaislocatedatajunctureamongtheEurasia，theIndian-Australia，andthePacificplates，andthereforeinfluencedbytheTethysTectonicDomainonthewestandthePacificT

2、ectonicDomainontheeastat吐leSalTletime，whichleadstoitsdevelopmentunderacomplextectonicsetting．Inaddition，theeffectofitsresourcesandenvironmenthasalsobeenwidelyconcemedathomeandabroad．Intheseyears，researchesonlithosphericdeepstructure，superficialstructuraldeformation，magmatism

3、，sedimentarybasinevolution，seafloorspreadingera，andpaleomagnetismoftheSouthChinaSearegionhavemadesomeprogress，whichprovidesimportantconstraintsforunderstandingthetectonicevolutionoftheSouthChinaSearegionduringtheMeso—Cenozoic．TheProto—SouthChinaSeawasanimportanttectonicunitd

4、uringtheformationprocessoftheSouthChinaSea．However,previoustectonicevolutionmodelsoftheSouthChinaSeararelyconsidertheimpactoftheProto—SouthChinaSea,especiallyitssubductionandclosure．ThelocationandcharacteristicsoftheProto—SouthChinaSea，andtherecords，time，way,andmechanismofit

5、ssubductionprocess，whichareessentialforplatesreconstructionofthesoutheastAsia，arealsorarelystudied．InordertOaddresstheaboveissues，thispaperdiscussedthesubductionprocessoftheProto—SouthChinaSea，combinedwithsedimentaryformation，magmatism，relicsofoceaniccrustintheactivecontinen

6、talmarginoftheProto-SouthChinaSeaandstructuralanalysisofnorthwesternKalimantan．Furthermore，throughcomparingthesubductionprocessoftheProto—SouthChinaSeawiththeonset，spreadingandsubdutionoftheSouthChinaSea，weexploretherelationshipbetweentectonicevolutionoftheProto．SouthChinaSe

7、aandtheSouthChinaSea，therebyrevealingthedynamicsofCenozoicevolutionoftheSoutheastAsia．Wegainsomeinsightthroughthestudy：III万方数据古南海与南海海盆的构造演化关系1．TheProto-SouthChinaSeawasalateMesozoiccontinentalmarginalseawhichdevelopedinthetransitionpartoftheTethysOceanandPaleo-PacificOcean．T

8、hrouthanalysisofophiolitemelange，magmatiteandsedimentaryformationofthenorth