资源描述：
《好东西-未来的地球Future-Earth.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、未来的地球FutureEarthWhyLookAhead?UsuallypicturegeologictimebylookingbackNewPerspectiveCanyoupicturetheU.S.in1000years?That’saninstantingeologictimeHumanactivitiesareephemeralcomparedtogeologictime1000Years5-7M=8quakesonSanAndreasNewMadridandCascadiaquakes10CascadeseruptionsMissi
2、ssippideltashiftNiagaraFallsretreats900metersHawaiimoves90metersProbabledamagingmeteorimpactOneormoresupernovasHumansin1000yearsProbablymanycitiesandnationswillstillbeextant10,000years50-70M=8quakesonSanAndreas100Cascadeseruptions10-20MississippideltashiftsNiagaraFallsretrea
3、ts9kilometersHawaiimoves900metersProbablemeteorimpactwithregionaleffectsHudson’sBayandBalticdrainedDozensofSupernovasEarthaxistilt22-1/2degreesFutureNiagaraFallsPastandFutureNiagaraFallsHumansin10,000yearsIn8,000yearswegotfromproto-Indo-EuropeantoEnglish,LatinandRussianTimee
4、noughfornewlanguagestoevolveWillanywordinanylanguagestillsurvive?100,000yearsSanAndreasshiftedby2.5kilometers1000Cascadeseruptions100-200MississippideltashiftsNiagaraFallsretreatedtoLakeErieLoihireachessurface?NumerousmeteorimpactswithregionaleffectsprobableNexticeage?Newsta
5、rsmayformTheFutureGulfCoastStarsChangeFasterthantheEarthHumansin100,000yearsTimeenoughtodevelopourcivilizationfromPaleolithictechnologyFewernaturalresourcesbut…Oldhumandepositsmaybebettersourcesthanrocks1,000,000yearsSanAndreasshiftedby25kilometersLargenewCascadesvolcanoes10
6、00-2000MississippideltashiftsTeniceages?LoihiandKilaueaaslargeaspresentMaunaLoaSeveralcollapsesofHawaiianshieldsSeveralsupervolcanoeruptionsMeteorimpactwithglobaleffectsprobableTheFutureSanAndreasBrightStarsinthenextMillionYearsHumansin1,000,000yearsHumanraceitselfmayevolveI
7、fsocietycollapseslongenough,differentgenepoolsmayspeciateWhatWillEndure1,000,000years?SteelcorrodesTitanicandArizonawillbegonein1000years.Mostlikelytosurvive:nosteel,solidHighwayandcanalcutsEarthfilldamsOpenpitminesandminedumpsLargemonuments(MountRushmore,Pyramids)WhatWillTh
8、eySeeofUs?PleistocenemassextinctionRapidglobalspreadofhumanartifacts,reduct
