简介：Diabasbrottet,selectedbytheInternationalSubcommissononOrdovicianStratigraphyandin2002ratifiedbytheInternationalCommissiononStratigraphyastheGSSPoftheSecond(Upper)StageoftheLowerOrdovician,islocatedontheHunnebergMountaininsouthwesternSweden.ThestratigraphicsuccessionrepresentsanoutershelfenvironmentneartheBalticShieldmargin.Theshale-dominated,biostratigraphicallycomplete,richlyfossiliferousboundaryintervaliscompletelyexposedinadisusedquarry.TheGSSPisinthelowerTФyenShale2.1mabovethetopoftheCambrianandismarkedbythefirstappearanceofthegraptoliteTetragraptusapproximatusNicholson.Theboundaryintervalcontainsadiversegraptolitefaunaandbiostratigraphicallydiagnosticconodontsandtrilobitesthatmakeitpossibletodefinetheboundaryintermsofzoneschemesbasedonthesegroups.Inthisrespect,theDiabasbrottetandnearbysectionsareuniqueintheworldamongdescribedlocalitieshavingthisboundaryinterval.BasedontheappearanceofT.approximatus,thebaseoftheSecondStagecanbeidentifiedinmanygraptolitiferoussuccessionsroundtheworldbutthisleveliscurrentlymoredifficulttorecognizepreciselyinsomecarbonatesequencesoutsideBaltoscandia.WeproposetheSecondStagebecalledtheFloanStage.ItisnamedfortheVillageofFlo,whichissituatedabout5kmsoutheastoftheGSSP.
简介：Energyplaysasignificantroleinournationalmoderniza-tionconstruction.TheChinesegovernmenthasalwayspaidagreatattentiontotheChineseenergyindustryandregardeditasakeyissueinthenationaldevelopmentstrategy.Energyindustrydevelopmenthasbeengoinguprapidlyoverlast4decadessincethePeople’sRepublicwasfounded.Bytheendof1991,totalprimaryenergyproductiongotto1.047billiontonsofcoalequivalent,whichincludes1.09billiontonsofrun-off-minecoal,139milliontonsofcrudeoil,15.3billionM~3ofnaturalgas.Electricitygeneratingcapacity
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