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简介：ＧｅｏｓｔｒｏｐｈｉｃＷａｖｅＣｉｒｃｕｌａｔｉｏｎｓ（Ｅｎｇｌｉｓｈｅｄｉｔｉｏｎ）ＹｏｎｇＬ．ＭｃＨａｌｌ（Ｄｅｐｔ．ｏｆＥａｒｔｈ，ＡｔｍｏｓｐｈｅｒｉｃａｎｄＰｌａｎｅｔａｒｙＳｃｉｅｎｃｅｓ，ＭＩＴＰｕｂｌｉｓｈｅｄｂｙＣｈｉｎａＭｅｔｅｏ...

简介：ActaGeologicaSinica(EnglishEdition)isabimonthly,SCI-indexedacademicjournalproducedbytheGeologicalSocietyofChina.Havinganimpactfactorrangingfrom1.5to2.15,ithaslongbeenindexedbymanyinternationaldatabasesandwebsites,suchasSCI,CA,BIG,etc.Internationally,thejournalcooperateswithJohnWiley&SonsCo.Ltdtopublishtheelectronicversion;allpaperscanbedownloadedonline.Contributorswishingtosubmit,read,enquireanddownloadcanlogineitherviahttp://mc.manuscriptcentral.com/ags(forinternationalcontributors)orhttp://www.geojournals.cn/dzxben/ch/index.aspx(forauthorsontheChinesemainland).

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简介：NewObservationsonphosphatizedSpheroidalFossilsinSinianDoushantuoanPhosphoritesinWeng'an,GuizhouProvinceInrecentyearsmuchattentionhasbeenpaidtophosphatizedspheroidalfossilsfoundintheSinianDoushantuoanphosphoritesinweng'an,GuizhouProvince.Disputeshavebeenlongexistedabouttheirphylogeneticaffinity.Basedonsomenewdiscoveriesandthepresentknowledge,someresearchersinterpretsomeofthephosphatizedspheroidalfossilsasanimalembryos,whereasothersholodtheutterlyidifferentviewthattheypaper,basedonnewdataofsomespheriodalfossilsindiscussedandreinterpreted.Itisobviousthatthephosphatizedspheroidalfossilassemblagefoundinweng'anconsistsofcyanobacteria,benthicmelticellularalgae,planktonicacritarchsandotherfossilswithuncertainassignments,andprovideanexceptionallywell-preservedphosphatizedLagerstatten.

简介：ActaGeologicaSinica(EnglishEdition)isindexedbySCI,withtheimpactfactorsrangingfrom1.5to2.15,andalsoindexedbyCA,theBibliographyandIndexofGeology(BIG),BiologicalAbstracts,andGeographicalAbstractsandmanyothers.Internationally,ActaGeologicaSinica(EnglishEdition)hasbeencooperatedwithWilley-BlackwellPublishingCorporation,andhasallthepaperspublishedonline.ActaGeologicaSinica(EnglishEdition)hastwosubmissionwebsitesat:http://mc.manuscriptcentral.com/agsforinternationalauthorsandhttp://www.geojournals.cn/dzxben/ch/index.aspxforChineseauthors.Authorscansubmit,inquireanddownloadpapersateitherwebsite.

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简介：ActaGeologicaSinica(EnglishEdition)isindexedbySCI,withtheimpactfactorsrangingfrom1.5to2.15,andalsoindexedbyCA,theBibliographyandIndexofGeology(BIG),BiologicalAbstracts,andGeographicalAbstractsandmanyothers.Internationally,ActaGeologicaSinica(EnglishEdition)hasbeencooperatedwithWilley-Blackwell

简介：TheDiscoveryofBalmeisporitesfromtheTaipinglinchangFormationintheJiayinBasin,HeilongjiangandItsSignificanceWANChuanbiao,LIUBenpei,QIAOXiuyun,YANGJianguo,SHANXuanlongandRENYanguang(1.CollegeofEarthScienceofJilinUniversity,Changchun130026;2.CollegeofEarthScienceofChinaUniversityofGeosciences,Beijing100083;3.ExplorationandDevelopmentResearchInstituteofDaqingOilFieldCompanyLtd.,Daqing,Helongjiang163712;4CollegeofEarthandSpaceofPekingUniversity,Beijing100871)

简介：OurfieldworkandgeochronologicstudiesinnorthernHebeiandwesternLiaoningareasindicatethatthemajorMesozoiccontractionaleventsintheYanshanbeltareof(1)pre-MiddleJurassic(Indosinian?),(2)LateJurassicand(3)EarlyCretaceousage.ThefirstN-SshorteningcouldbeaconsequenceofthecollisionoftheMongolianarcsalongtheSolonsutureagainsttheNorthChinaplate.Siberian-NorthChinaplatecolli-

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