简介:Rheologicalpropertiesofpolyphaserocksplayanimportantroleinthedynamicsofthelithosphereandasthenosphere.However,suchfundamentalissueshavenotbeenwellresolved.Atheoreticalanalysishasbeenmadetodevelopexpressionsfortheflowlawsofpolyphaserocksintermsofthevolumefractionsandflowlawsoftheirconstituentphases.Theflowstrengthspredictedbytheproposedmodelforcommoncrustalanduppermantlerockssuchasgranite,diorite,diabaseandlherzolite,andforsynthetictwo-phasecompositessuchasforsterite-enstatiteandwaterice-ammoniadehydrateaggregatesareingoodagreementwithpreviouslydeterminedexperimentalvalues.Theproposedtheoreticalmodelallowsonetocalculate,tothefirstapproximation,theflowlawsofalargenumberofpolyphaserocksatgeologicconditionsbasedontheexperimentallydeterminedflowlawsofarelativelysmallnumberofmonomineralicaggregates.
简介:Basedontherelationshipbetweenrockphysicalpropertiesandatomicstructuresofchemicalelements,thispaperdissertatesthecharacteristicsbetweenthedifferenceandchangeinthecomprehensivephysicalpropertiesofrocks,suchasdensity,elasticity,electricalpropertyandradioactivity,etc.Theexamplesinthispapershowthatthechangeofthecomprehensivephysicalparametersofrocksreflectsthechangeofatoms,molecules,mineralsandtheirconstitutionsinrocks,andtherearesomecorrelationsbetweentheseparameters.
简介:Recently,wecarriedouttheNationalNatureScienceFoundationofChina(No.41273033)andSpecialFundforBasicScientificResearchofCentralColleges(No.310827153407)andmadesomeadvancesasfollows.ThemainresearchachievementsofthePaleozoicvolcanicrocksinnorthwestChinaincludetwoaspects:
简介:本文提出了产业集群租金的概念,并将产业集群租金按源泉分为产业租金、地理租金和组织租金。本文认为,产业集群起因于生产要素对产业集群租金的追逐,租金的耗散导致产业集群的衰败。随着产业集群租金的主要来源由产业租金、地理租金向组织租金演变,产业集群从非正式产业集群向有组织的产业集群、创新型产业集群演进。
简介:Neoarchean变形mafic岩石在更低并且中间的WutaiComplexmainly包括变形斑粝岩,角闪岩和绿泥片岩。他们能根据球粒状陨石被细分进三个组规范的REE模式。在组#1的岩石被将近扁平的REE模式(La_n/Yb_n=0.86-1.3)描绘,最低全部的REE(29-52ppm),并且弱对积极Eu异例否定(Eu_n/Eu_n~*=0.84-1.02),将近完全原始的披风使模式和强壮的否定Zr(Hf)正常化异例。他们在REE和痕量元素的geochemical特征类似于海洋高原拉斑玄武岩的那些,它暗示这组岩石能表示太古代的海洋的外壳的残余源于一根披风羽毛。在组#2的岩石被中等全部的REE(34-116ppm)描绘,充实LREE(La_n/b_n=1.76-4.34)球粒状陨石与弱Eu异例使REEpatterns正常化(Eu_n/Eu_n~*=0.76-1.16),并且否定Nb,Ta,Zr(Hf),在使正常化的原始披风的Ti异例搜寻图。REE和痕量元素特征显示他们表示从一个亚弧披风发源的弧岩浆挤metasomatized导出byslab的液体。在组#3的岩石被最高全部的REE(61-192ppm)描绘,有稍微否定的Eu异例的最强壮的LREE丰富(La_n/Yb_n=7.12-16)(Eu_n/Eu_n~*=0.81-0.95)在球粒状陨石规范的图。在原语,披风使图正常化,这些岩石被大负异常在Nb描绘,Ta,Ti,对没有Zranomalies否定。他们代表从充实的亚弧披风楔发源的弧岩浆导出inslab融化。三组岩石暗示NeoarcheanWutaiComplex的形成与披风羽毛和岛弧相互作用有关。
简介:AnintegratedstudyofzirconU-Pbgeochronologyandpetrochemistry,togetherwithzirconLu-Hfisotopes,hasbeencarriedoutonthebasaltic-andesitictuffandvolcanicbrecciafromtheNamHangFormationandandesitictufffromtheMuang-NanFormationintheXaignabouliarea,whichhadbeenmappedasthePermian–EarlyTriassiconthe1:1000000geologicalmaporLateCarboniferousonthe1:200000geologicalmaps.ZirconU-Pbdatingofthreesamplesyieldedweightedmeanagesof235±2.6,232±1.4and278±2.8Ma,respectively,suggestingaLateTriassicoriginfortheNamHangFormationandanEarlyPermianoriginfortheMuang-NanFormation.Geochemically,theyarecharacterizedbydepletionsinHFSEs(e.g.,Nb,Ta,Ti)andhighLILE/HFSEratios,andtheyhavepositivezirconεHf(t)valuesof8.7–15.9,whichexhibitsthecontinentalarcvolcanicaffinityandpartialmeltingofsubductingoceanicslabinthemagmasource.Combinedwithspatialoccurrenceofthevolcanicrockandexistinggeochronologicalandgeochemicaldata,wesuggestthattheXaignabouli-LuangPrabangvolcanicbeltcanbelinkedtotheLoei-Phetchabunbelt.ThePermian–TriassicvolcanicrocksinthisbeltmightbeaproductoftheNanback-arcbasineastwardsubduction.
简介:ThispaperstudiesRabinovitch'scompressionexperimentsongraniteandchalkandproposesanoscillatingdipolemodeltoanalyseandsimulatetheelectromagneticradiationphenomenoncausedbyfractureofrocks.Ourmodelassumesthattheelectromagneticradiationpulsesareinitiatedbyvibrationsofthechargedrockgrainsonthetipsofthecrack.Thevibrationsoftherockgrainsarestimulatedbythepulsesofthecracks.OursimulationsshowcomparableresultswithRabinovitch'scompressionexperiments.Fromthesimulationresults,itverifiesanassumptionthatthecrackwidthisinverselyproportionaltothecircularfrequencyelectromagneticradiation,whichispresentedbyRabinovitchetal.Thesimulationresultsalsoimplythat,byusingouroscillatingdipolemodeltogetherwithRabinovitch'stwoequationsaboutthecracklengthandcrackwidth,wecanquantitativelyanalyseandsimulatetheelectromagneticradiationphenomenon,whichisinducedfromthefractureoftherocks.
简介:摘要县域职业教育要努力成为农村科技与经济结合的桥梁,坚持以科研与产业集群的发展支撑学科集群,促进教学创新,以教学创新推动科研和产业集群的发展。
简介:Basedonthermalsimulationexperiment,interactionsbetweenvolcanicfluidsandsourcerockswerestudied.Gasgenerationsinthedrysystemandfluidsystemunderdifferenttemperatureswereanalyzed.Theresultsshowedthatthevarioustypesofsourcerocksaresimilarincomposition,containinggaseousC1-C5hydrocarbons,H2andCO2whosegasyieldsincreasewithincreasingtemperature.ThegasyieldofsourcerocksoftypeisⅠthehighest,followedbytypeⅡ,andthatofsourcerocksoftypeisⅢthelowest,indicatingthattheyieldofhydrocarbongasesisrelatedtotheirhydrocarbongeneratingpotential.AlthoughthegeneratingpotentialoftypeisⅢthelowest,itcanstillberegardedasausefulgassourcewhenitisburieddeeplyenough.Thebasicvolcanicfluidrestrainsthegenerationofgaseoushydrocarbonsindifferenttypesofsourcerocks,butpromotesthegenerationofinorganicgases.