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简介：Thewormgeologicalcommunityowesthe2ndInternationalGeologicalCongress(IGC)Bologna1881(i)theestablishmentofacommondisciplinarylanguage;(ii)agreementonthebasicchronostratigraphicalandchronologicalclassificationandnomenclature;(iii)agreementonthebasicprinciplesfornamingthefossilorganismsfollowingthebinomialnomenclatureandthepriorityrulestartingwithLinnaeus'SystemaNaturae(1776edition);(iv)theestablishmentofpermanentinternationalbodiesliketheInternationalCommissiononNomenclature,whichevolvedintothepresentInternationalCommissiononStratigraphy(ICS),andtheCommitteefortheGeologicalMapofEurope,evolvedtothepresentCommissionfortheGeologicalMapoftheWorld(CGMW);(v)theintroductionofaGeologicalExhibition(thepresentGeoexpo)intimatelyrelatedtotheIGC;(vi)thefirstorganizationofpost-CongressfieldtripsrelatedtotheCongressactivity;(vii)thefreedistributionofpublicationsandmapsspeciallypreparedfortheCongressmembers.ItalyowestheBolognaIGCthefoundationoftheSocietaGeologicaItalianawhichobtainedonsiteimmediateinternationalsubscription.BolognaowesitsIGCtotheopeningofthelafgeGeologicalMuseum(laternamedafterGiovanniCapellini,Chairmanofthe2ndIGC)andthearchaeologicalMuseoCivico.Suchanimpressiveseriesofresultswaspossiblethroughthe“spiritofco-operation”seededatthe1stParisIGC,thetimelyandenthusiastic"organizationaleffortsofCapellini,hisextensivenetworkofforeigncorrespondents,andhissmoothchairmanshipofthesessions.ablyassistedbyQuintinoSella,ThomasSterryHunt,EugeneRenevier,FrancoisFontannes,AugusteDaubreeandJamesHall.Paradoxically,thesuccessandfutureprosperityoftheIGCs,bothbeforeandaftertheestablishmentoftheInternationalUnionofGeologicalSciences(IUGS),wereenhancedbythelimitedgoals,mostlyfocusedontheestablishmentofformalconventions.ItisarguedthattheIGCmustmaintainitsiden

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简介：鉴于高精确性和可预测性，高分辨率的顺序地层学广泛地被使用了给探索上油并且得到突出的适用的结果。这篇文章拿第一层，上面的秒submember，Shahejie()从Pucheng的形成()是的油矿根据核心日志数据的全面研究在水库学习分析高分辨率的顺序地层学的应用程序的一个例子。第一，这个区域的外形分析揭示沉积沉重的溪流在尺寸减少并且由于蒸发和传播损失消失的发生的相应终端扇子系统。模型包括终端扇子的分成三部分的带状配列进feeder，支流，和basinal地区。第二，electrofacies被记载得好的分析做然后匹配，沉积外形由核心分析定义。在目标区域以内描绘主要沉积外形协会和depositional环境的四electrofacies被定义(隧道，落后沉积物，湖或泛滥平原，和溢出扔)。第三，相关关联基于高分辨率的顺序地层学被建立。由观察基因序列的叠的安排，stratigraphic周期的不同规模能被识别。在规模和持续时间以内，stratigraphic周期作为基因序列，基因顺序集合，和次要的周期被称为。

简介：Diabasbrottet,selectedbytheInternationalSubcommissononOrdovicianStratigraphyandin2002ratifiedbytheInternationalCommissiononStratigraphyastheGSSPoftheSecond(Upper)StageoftheLowerOrdovician,islocatedontheHunnebergMountaininsouthwesternSweden.ThestratigraphicsuccessionrepresentsanoutershelfenvironmentneartheBalticShieldmargin.Theshale-dominated,biostratigraphicallycomplete,richlyfossiliferousboundaryintervaliscompletelyexposedinadisusedquarry.TheGSSPisinthelowerTФyenShale2.1mabovethetopoftheCambrianandismarkedbythefirstappearanceofthegraptoliteTetragraptusapproximatusNicholson.Theboundaryintervalcontainsadiversegraptolitefaunaandbiostratigraphicallydiagnosticconodontsandtrilobitesthatmakeitpossibletodefinetheboundaryintermsofzoneschemesbasedonthesegroups.Inthisrespect,theDiabasbrottetandnearbysectionsareuniqueintheworldamongdescribedlocalitieshavingthisboundaryinterval.BasedontheappearanceofT.approximatus,thebaseoftheSecondStagecanbeidentifiedinmanygraptolitiferoussuccessionsroundtheworldbutthisleveliscurrentlymoredifficulttorecognizepreciselyinsomecarbonatesequencesoutsideBaltoscandia.WeproposetheSecondStagebecalledtheFloanStage.ItisnamedfortheVillageofFlo,whichissituatedabout5kmsoutheastoftheGSSP.

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