汪啸风,Stouge S.,陈孝红,李志宏,王传尚,Erdtmann B.-D.,曾庆銮,周志强,陈辉明,张淼,徐光洪

• 1:宜昌地质矿产研究所
• 2:Geological Museum University of Copenhagen 1350
• 3:Φster Volgade 5-7
• 4:Copenhagen K

摘要(Abstract)：

湖北宜昌黄花场剖面是我国奥陶系大湾阶的界线层型剖面,高精度生物地层以及岩石、层序地层和碳同位素地球化学的综合研究表明,该剖面完全符合关于建立全球下奥陶统-中奥陶统界线(即奥陶系第三个尚待正式命名的阶)界线层型剖面和点位(GSSP)的条件。建议以该剖面牙形石Baltoniodus?triangularis的首现层位,作为划分全球下奥陶统-中奥陶统界线的GSSP。所建议的GSSP交通方便,位于距宜昌市北北东22km的公路旁,地层出露完美无缺,界线生物层位于大湾组下段SHod-16层底部,距大湾组底部10.57m;界线上下发育了B.?triangu-laris的完整演化序列,并伴生有极好的Baltoniodus、Trapezognathus、Periodon和Microzarkodina等牙形石属种演化序列来作为佐证;界线之上0.2m所出现的世界广布的Microzarkodina abellum可作为划分此界线的辅助标志。界线生物层位于低位海侵序列之中,界线之下0.6m处所显示的从高位到低位的层序转换面和碳同位素最大偏移,与全球此时所发生低位事件密切相关,可作为识别该界线的物理和化学标志。所建议的界线生物层与笔石Azygograptus suecicus生物带上下组合之间的界线接近,与几丁虫Belonechitinacf.henryi生物带底界几乎一致,因此,所建议的界线易于在全球,无论浅水碳酸盐相、还是深水笔石相,识别和进行精确对比。同样的生物组合序列和层序及碳同位素异常亦在黄花场剖面之北5km的陈家河(即大坪)剖面得到了验证.

关键词(KeyWords)： 下奥陶统-中奥陶统界线,界线层型剖面和点位(GSSP);,黄花场剖面,宜昌,湖北,牙形石,笔石,几丁虫

Abstract:

Keywords:

基金项目(Foundation): 中国地质调查局(No.200113900072);; 国家自然基金委员会(No.40272020);; 全国地层委员会和德国科学交流中心(DAAD)资助项目成果之一。

作者(Author): 汪啸风,Stouge S.,陈孝红,李志宏,王传尚,Erdtmann B.-D.,曾庆銮,周志强,陈辉明,张淼,徐光洪

DOI: 10.19839/j.cnki.dcxzz.2005.s1.012

参考文献(References)：

• 安泰庠.1987.中国南方早古生代牙形石.北京:科学出版社.1—238.
• 陈孝红,汪啸风,李志宏.1996.华南阿伦尼格世生物地层与古生物地理.地质论评,42(3):200—208.
• 陈孝红,汪啸风,李志宏,王传尚,张淼.2002.湖北宜昌黄花场中/下奥陶统界线附近几丁虫组合及其意义.地层学杂志,26(4):241—247.
• 陈旭,周志毅.2005,奥陶系全球界线层型剖面和点位(GSSP)的研究.地层学杂志,29(2):165—170.
• 汪啸风.1980,中国奥陶系.地质学报,54(1):1—8;(2):85—94.
• 汪啸风,曾庆銮,周天梅,倪世钊,徐光宏,孙全英,李志宏,项礼文,赖才根.1983.长江三峡东部地区的奥陶纪晚期与志留纪初期的化石群兼沦奥陶系与志留系界线问题.中国地质科学院宜昌地质矿产研究所所刊,6:96—163(中英文).
• 汪啸风,倪世钊,曾庆銮,徐光洪,周天梅,李志宏和项礼文,赖才根.1987.长江三峡生物地层学(2)早古生代部分.北京:地质出版社.43—197(inChinesewithEnglishsummary).
• 汪啸风,陈孝红.1999.中国奥陶纪古生物地理与古气候,地层古生物论文辑,27:1—27.
• 张文堂,李积金,钱义元,朱兆玲,陈楚震,张守信.1957.湖北峡东寒武系及奥陶系.科学通报,(5):145—146.
• 张文堂.1962.中国的奥陶系全国地层会议学术报告汇编.北京:科学出版社.1—161.
• 曾庆銮,倪世钊,徐光洪,周天梅,汪啸风,李志宏,赖才根,项礼文.1983.长江三峡东部地区奥陶系划分与对比.中国地质科学院宜昌地质矿产研究所所刊,6:1—68(中英文).
• 曾庆銮,倪世钊,徐光洪,周天梅,汪啸风,李志宏,赖才根,项礼文.1987.奥陶系.见:汪啸风等.长江三峡地区生物地层学(2)早古生代部分.北京:地质出版社.43—142.
• 曾庆銮.1991.中国长江三峡东部地区奥陶系腕足类群落和海平面升降变化.中国地质科学院宜昌地质矿产研究所所刊,16:33—42.
• 穆恩之,朱兆玲,陈均远,戎嘉余.1979.中国西南的奥陶系.见:中国科学院南京地质古生物研究所编.西南地区碳酸盐生物地层.北京:科学出版社.39—220.
• AchabA.1986.AssemblagesdechitinozoaniresdansI'Ordovicienin-ferieurdeI'estduCanada.CanadianJournalofEarthSci-ences,23:682—695.
• AchabA.1989.OrdovicianchitinozoanzonationofQuebecandWesternNewfounland.JournalofPalaeontology,63(1):14—24.
• AlbanesiGL,OrtegaG,BarnesCR,&HunickenMA.1999.Co-nodont-graptolitebiostratigraphyoftheGualcamayoFormation(MiddleOrdovician)intheGualcamayo-Guandacolriversarea,ArgentinaPrecordillera.ActaUniversitatisCarolinae-Geologi-ca,43(1/2):45—48.
• AlbanesiGL&CarreraMG.2001.NiquivilsectionofCentralPre-cordillera,Argentina,proposedastheGlobalStratotypeforthebaseoftheMiddleOrdovicianSeries.GeologicalSocietyofA-merica,AbstractswithPrograms33(6):446—447.
• AlbanesiGL,CarreraMG,Ca灳asFL,&SaltzmanM.2003.TheNiguivilsection,PrecordilleraofSanJuan,Argentina,pro-posedGSSPforLower/MiddleOrdovicianboundary.In:Al-banesiGL,BeresiMS,&PeraltaSHeds.OrdovicianfromAndes.INSUGEO,SerieCorrelaci幃nGeol幃gica,17:33—40.
• AlbanesiGL,CarreraMG,Ca灳asFL,&SaltzmanM.2004.Defi-nitionofglobalboundarystratotypesectionandpoint(GSSP)forthebaseofMiddleOrdovicianSeries:TheNiquivilsection,PrecordilleraofSanJuan,Argentina.ISOSWebsite.1—35.
• BagnoliG&StougeS.1997.LowerOrdovician(Billingenian-Kun-da)conodontzonationandprovincesbasedonsectionsfromHornsUdde,northland,Sweden.BollettinodellaSociet劋PaleontologicaItaliana,35(2):109—163.
• BecklyAJ&MaletzJ.1991.TheOrdoviciangraptolitesAzy-gograptusandJishougraptusinScandinaviaandBritain.Pa-laeontology,31(4):887—925.
• BergstrmSM.1995.Thesearchforglobalbiostratigraphicrefer-encelevelsintheOrdovicanSystem:regionalcorrelationpoten-tialofthebaseoftheNorthAmericanWhiterockianStage.In:CooperID,DroserML,&FinneySCeds.OrdovicanOdys-sey:ShortpapersfortheSeventyInternationalSymposiumontheOrdovicianSystem.SEPM,pacificSection,Book77:149—152.
• BerryWBN.1960.GraptolitefaunaoftheMarathonRegion,westTexas.UniversityofTexasPublication6005:1—179.
• BradshawLE.1969.ConodontsfromtheFortPeaFormation(MiddleOrdovician),MarathonBasin,Texas.JournalofPa-leontology,43(5):1137—1168.
• BrockR&LiJ.1999.Preliminaryresultsonupper“Arenigian”tolower“Llanvirnian”acritarchsfromSouthChina.ActaUniver-sitatisCarolinae-Geologica,43:259—261.
• ChenXu&BergstrmSMeds.1995.Thebaseoftheaustrodenta-tusZoneasalevelforglobalsubdivisionoftheOrdovician.Palaeoward,5:1—117.
• ChenXu,RongJia-yu,WangXiao-feng,WangZhi-hao,ZhangYuan-dong,&ZhanRen-bin.1995.CorrelationoftheOrdovi-cianrocksofChina.InternationalUnionofGeologicalSciences,Publication31:1—104.
• ChenXu,RongJia-yu,MitchellG,HarperDAT,FanJun-xuan,ZhanRen-bin,ZhangYuan-dong,LiRong-yu,&WangYi.2000.LateOrdoviciantoearliestSiluriangraptoliteandbra-chiopodbiozonationfromtheYangtzeregion,SouthChina,withaglobalcorrelation.GeologicalMagzine,137(6):623—650.
• ChenXu,RongJia-yu,&ZhouZhi-yi.2003.Ordovicianbiostratig-raphyofChina.In:ZhangWen-tang,ChenPei-ji,&PalmerAReds.BiostratigraphyofChina.Beijing:SciencePress.121—171.
• ChenXu,RongJia-yu,FanJun-xuan,ZhanRen-bin,MitchellCE,HarperDAT,MelchinMJ,&WangXiao-feng.2004.Afi-nalreporttotheGSSPcandidateoftheHirnantianStage.ISOSWebsite:1—23.
• CooperBJ.1981.EarlyOrdovicianconodontsfromtheHornValleySiltstone,centralAustralia.Palaeontology,24:147—183.
• CooperRA&LindholmM.1990.ApreciseworldwidecorrelationofearlyOrdoviciangraptolitesequence.GeologicalMagazine,127(6):497—525.
• CooperAH,RushtonAWA,MolyneuxSG,HughesRA,MooreRM,&WebbBC.1995.Thestratigraphy,correlation,prov-enanceandpalaeogrographyoftheSkiddawGroup(Ordovician)intheEnglishLakeDistrict.GeologicalMagazine,132(2):185—211.
• DanielGoldman,StephenAL,&JaakNovak.2005.TheBlackKnobRidgeSection,SoutheasternOklahoma,USA:ACandi-dateGlobalStratotype-SectionandPoint(GSSP)fortheBaseoftheMiddleStageoftheUpperOrdovicianSeries.ISOSWebset:1—25.
• DronovAV,KorenTN,TolmachevaTJ,HolmerL,&MeidlaT.2003.“Volkhovian”asanameforthethirdglobolstageoftheOrdovicianSystem.In:AlbanesiGL,BeresiMS,&Per-altaSHeds.OrdovicianfromAndes.INSUGEO,SerieCorrelaci幃nGeol幃gica,17:59—63.
• EthingtonRL&ClarkDL.1982.LowerandMiddleOrdovicianconodontsthefromtheIbexarea,westernMillardCounty,Utah.BrighamYoungUniversityStudied,28(2):1—55.
• FinneySC&EthingtonRL.1992.WhiterockiangraptolitesandconodontsfromtheVininiFormation,Nevada:Biostratigraphicimplications.In:WebbyBD&LauriesJReds.Globalper-spectivesonOrdovicianGeology.Rotterdam:BalkemaAA.153—169.
• FinneySC&EthingtonRL.2000.GlobalOrdovicianseriesboun-dariesandglobaleventhorizons,MonitorRangeandRobertsMountains,Nevada.In:LegesonDR,PetersSG,&LahernMMeds.GreatBasinandSierraNevada.Boulder,Cororado,Geol.Soc.Am.FieldGuida2:301—318.
• FinneySC&EthingtonRL.2001.TheWhiterockNarrowssec-tion,MonitorRange,Nevada:proposedasGSSPforbaseofMiddleOrdovicianSeries(Report).In:ISOS,Website.
• ForteyRA,HarperDAT,&WoodcockNH.2000.ArevisedcorrelationofOrdovicianrocksinBritishIsles.GeologicalSoci-ety,London,SpecialReport,24:1—83.
• JohnstonDI&BarnesChR.1999.EarlyandMiddleOrdovician(Arenig)conodontsfromSt.PaulsInletandMartinPoint,CowHeadGroup,WesternNewfoundland,Canada.GeologicaetPalaeontologica,33:21—70.
• LeeJS&ChaoYT.1924.GeologyoftheGorgeDistinctoftheYangtze(fromIchangtoTzekuei)withspecialreferencetothedevelopmentoftheGorges.BulletinoftheGeologicalSocietyofChina,3:351—391.
• LiJun,BrockR,&ServaisT.2002.TheacritarchsoftheSouthChineseAzygograptussuecicusgraptoliteBiozoneandtheirbearingonthedefinitionoftheLower-MiddleOrdovician.C.R.Paleovol,1:75—81.
• LiZhi-hong,WangZhi-hao,WangXiao-feng,ChenXiao-hong,WangChuan-shang,&QiYu-ping.2004.ConodontsacrosstheLower-MiddleOrdovicianboundaryintheHuanghuachangsectionofYichang,Hubei.ActaPalaeotologicaSinica,43(1):14—31.
• LfgrenA.1994.Arenig(LowerOrdovician)conodontsandbiozo-nationintheeasternSiljandistrict,centralSweden.JournalofPalaeontology,68(6):1350—1368.
• LfgrenA.1995.ThemiddleLanna/VolkhovStage(middleArenig)ofSwedenanditsconodonfauna.GeologicalMagazine132(6):693—717.
• LindstrmM.1955.ConodontsfromthelowermostOrdovicianstra-taofSouth-centralSweden.GeologiskaFreningensiStock-holmFrhandlingar,76(4):517—803.
• LindstrmM.1971.LowerOrdovicianconodontsofEurope.In:SweetWC&BergstrmSMed.SymposiumonConodontBios-tratigraphy.GeologicalSocietyofAmerica,Memoir127:21—26.
• MaletzJ.1992.BiostratigraphieundpalaogeographievonUnterodo-vischengraptolithenfaunendesstlichenKanadasundSkandi-naviens.Dissertation,TechnishchUniversitatBerlin.1—246.
• MaletzJ.2005.EarlyMiddleOrdoviciangraptolitebiostratigraphyoftheLovisefredandAlbjaradrillcores(Scania,southernSwe-den).Palaeontotogy,48(4):763—780.
• MitchellCE.2001.NewgraptolitescollectionfromtheproposedWhiterockglobalstratotypesection:implicationsforcorrelationoftheNarrowssectionandanalternativeproposalfortheloca-tionoftheMiddleOrdovicianGSSPlevel.In:ISOSWebsite.
• NielsenAT.1992.IntercontinentalcorrelationoftheArenigian(EarlyOrdovician)basedonsequenceandecostratigraphy.InWebbyBD&LauriesJReds.GlobalPerspectivesonOrdovi-cianGeology,Rotterdam:BalkemaAA.367—379.
• ParisF.1990.TheOrdovicianchitinozoanbiozonesoftheNorthernGondwanaDomain.ReviewofPalaeobotanyandPalynonogy,66:190—191.
• ParisF.1996.Chitinozoanbiostratigraphyandpalaeoecology.In:JansoniusJ&McGregorDCed.Palynology:principlesandapplications,2:531—552.
• RasmussenJA.2001.ConodontbiostratigraphyandtaxonomyoftheOrdovicianshelfmargindepositsintheScandinavianCale-donides.FossilandStrata,48:1—176.
• RossRJJr&EthingtonRL.1992.NorthAmericanWhiterockSe-riessuitedforglobalcorrelation.In:WebbyBD&LaurieJReds.GlobalPerspectivesonOrdovicianGeology.Rotterdam:BalkemaAA.135—152.
• RossRJJr,HintzeLF,EthingtonRL,MillerJF,TaylorME,&RepetskiJE.1997.TheIbexian,LowermostSeriesintheNorthAmericanOrdovician.In:TaylorMEed.EarlyPaleo-zoicbiochronologyoftheGreatBasin,WesternUnitedStates.U.S.GeologicalSurvey,ProfessionalPaper1579:1—50.
• RossJRP&RossCA.1992.Ordoviciansea-levelfluctuations.In:WebbyBD&LauriesJReds.GlobalPerspectivesonOr-dovicianGeology.Rotterdam:BalkemaAA.327—335.
• SerpagliE.1974.LowerOrdovicianconodontsfromPrecordilera,Argentina(ProvinceofSanJuan).BolletinodellaSociataPale-ontologicaItaliana,13(1-2):17—98.
• StougeS,BognoliG,NielsonAT,RibercaiC,&TongiorgiM.1995.Oeland(LowerOedovician)biostratigraphyonthebasisoflandsection,Baltica.In:CooperID,DroserML,&FinneySCeds.OrdovicanOdyssey:ShortpapersfortheSeventyInternationalSymposiumontheOrdovicianSystem.SEPM,PacificSection,Book77:65—68.
• StougeS,WangXiao-feng,LiZhi-hong,ChenXiao-hong,&WangChuan-shang.2005.ThebaseoftheMiddleOrdovicianSeriesusinggraphiccorrelationmethod.http://www.ordovician.cn
• SweetWC&AlbanesiGL.2005.GraphiccorrelationofArgentinePrecordilleraandNorthAmericanLower/MiddleOrdoviciansections.www://www.Ordovician.cn.
• TolmachevaT&FedorovP.2001.TheOrdovicianBillingen/Volk-hovboundaryinterval(Arenig)atLavaRiver,northwesternRussia.NorwegainJournalofGeo-logy,81:161—168.
• TolmachevaT,FedorovP,&EgerquistE.2003.ConodontsandbrachiopodsfromtheVolkhovStage(LowerOrdovician)micro-bialmudmoundatPutilovoQuarry,north-westernRussia.BulletinoftheGeologicalSocietyofDenmark,50:63—74.
• TongiorgiM,YinLei-ming,&MiliaAD.1995.Arenigianacri-tarchsfromtheDapingsection(YangtzeGorgearea),HubeiProvince,SouththernChinaandtheirpalaeogeographicsignifi-cance.ReviewofPalaeobotanyandPalynonogy,86:13—48.
• WangXiao-feng,ChenXiao-hong,&ErdtmannB-D.1992a.Ordo-vicianchronostratigraphy———AChineseapproach.In:WebbyBD&LauriesJReds.GlobalPerspectivesonOrdovicianGeo-logy.Rotterdam:BalkemaAA.35—55.
• WangXiao-feng,HoffnechtA,XiaoJ,ChenS,LiZ,BrockeB,&ErdtmannB-D.1992b.Graptolite,chitinozoanandscolecodontreflectanceandtheiruseasindicatorofthermalmaturity.ActaGeologicalSinica,66(3):269—279.
• WangXiao-feng,HoffnechtA,XiaoJ,ChenS,LiZ,BrockeB,&ErdtmannB-D.1993.ThermalmaturityoftheSinianandEarlyPaleozoicinWestHubei,China,assessedbyCAI,reflectanceandgeochemicalstudies.StratigraphyandPalaeonotologyofChina,2:19—50.
• WangXiao-feng,LiZhi-hong,ChenJ,ChenXiao-hong,&SuW.1995.EarlyOrdoviansealevelchangesinSouthChinaandtheirworldwidecorrelation.JournalofChinaUniversityofGeosci-ences,7(1):54—62.
• WangXiao-feng&ChenXiao-hong.2003.OrdovicianchitinozoandiversificationeventsinChina.ScienceinChina(D),33(3):210—215(inChinese).
• WangXiao-feng,ChenXiao-hong.LiZhi-hong,&WangChuan-shang.2002.TheHuanghuachangsection,nearYichang,Chi-na,proposedasglobalstratotypeforthebaseoftheMiddleOr-dovicianSeries.In:ISOS,Website.1—13.
• WangXiao-feng,LiZhi-hong,ChenXiao-hong,&WangChuan-shang.2003a.TheHuanghuachangsection,potentialasGlobalStratotypeforthebaseoftheMiddleOrdovicianSeries.In:Al-banesiGL,BeresiMS,&PeraltaSHeds.OrdovicianfromAndes.INSUGEO,SerieCorrelaci幃nGeol幃gica,17:153—159.
• WangXiao-feng,LiZhi-hong,ChenXiao-hong,&WangChuan-shang.2003b.TheconodontssuccessionfromtheLowerDawanFormationofHuanghuachangsection,Yichang,China.In:AlbanesiGL,BeresiMS,&PeraltaSHeds.OrdovicianfromAndes.INSUGEO,SerieCorrelaci幃nGeol幃gica,17:161—166.
• WangXiao-feng,StougeS,ErdtmannB-D,ChenXiao-hong,LiZhi-hong,WangChuan-shang,ZengQing-luan,ZhouZhi-qiang,&ChenHui-ming.2004.AproposedGSSPforthebaseoftheMiddleOrdovicianSeries:theHuanghuachangsection,Yichang,China.In:ISOSeds.WebsiteforthebaseoftheMiddleOrdovician.1—61.
• WangXiao-feng,StougeS,ErdtmannB-D,ChenXiao-hong,LiZhi-hong,WangChuan-shang,ZengQing-luan,ZhouZhi-qiang&ChenHui-ming.2005.AproposedGSSPforthebaseoftheMiddleOrdovicianSeries:theHuanghuachangsection,Yichang,China.Episodes,28(2):105—117.
• WangZhi-hao,BergstrmSM,&LaneHR.1996.ConodoprovincesandbiostratigraphyintheOrdovicianofChina.AcPalaeontologicaSinica,35(3):26—58.
• WangZhi-hao&BergstrmSM.1998.Conodont-graptolitebios-tratigraphicrelationsacrossthebaseoftheDarriwilianStage(MiddleOrdovician)intheYangtzePlateformandtheJCYareainZhejiang,China.BolletinodellaSocietaPaleontologicaItali-ana,37(2-3):187—198.
• WebbyBD.1994.Towardsestablishinggloballyapplicablebounda-riesfortheOrdovicianSystem:majorinternationaldivisionsandcriteriafordefinitions.In:SOS,IUGSeds.OrdovicianNews,11:15.
• WebbyBD.1997.CommentsonOrdoviciansubdivisionsandusage.In:SOS,IUGSeds.OrdovicianNews,14:28—31.
• WebbyBD.1998.StepstowardaglobalstandardforOrdovicianstratigraphy.NewsletteronStratigraphy,1:1—33.
• WebbyBD&NicollRS1989.AustraliaPhanerozoicTimescales.2Ordovician.BureauofMineralResources,GeologyandGeo-physics.1—42.
• WebbyB,DCooperRA,BergstrmSM,&ParisF.2004.Strati-graphicframeworkandtimeslices.In:WebbyBD,ParisF,DroserML,&PercivalIeds.ThegreatOrdovicianbiodiversi-ficationevent.NewYork:ColumbiaUniversityPress.41—47.
• WilliamsSH&StevensRK.1998.EarlyOrdovician(Arenig)graptolitesfromtheCowHeadGroup,westernNewfoundland,Canada.PalaeontologicaCanadiana,5:1—167.
• YinLei-ming,MiliaAD,&TongiorgiM.1998.NewandemendedtaxafromthelowerDawanFormation(lowerArenig,Huang-huahangSection,SouthChina).ReviewofPalaeobotanyandPalynology,102:223—248.
• ZhenY-y,PercivalIG,&WebbyBD.2003.EarlyOrdovicianco-nodontsfromfarwesternNewSouthWales,Australia.RecordsoftheAustraliaMuseum,55(2):169—220.
• ZhangYuan-dong&ChenXu.2003.TheEarly—MiddleOrdoviciangraptolitesequenceoftheUpperYangtzeregion,SouthChina.In:AlbanesiGL,BeresiMS,&PeraltaSHeds.OrdovicianfromAndes.INSUGEO,SerieCorrelaci幃nGeol幃gica,17:173—180.