简介:Geothermalenergyisapreciousresource,whichiswidelydistributed,varied,andabundant.Chinahasenteredaperiodofrapiddevelopmentofgeothermalenergysince2010.Asshallowgeothermalenergypromoting,thedepthofhydrothermalgeothermalexplorationisincreasing.ThequalityofHotDryRock(HDR)andrelatedexploratorytechnologiesarebetterdevelopedandutilized.Onthebasisofgeothermaldevelopment,thispaperreviewsthegeothermalprogressduringthe"12thFive-YearPlan",andsummarizestheachievementsofhydrothermalgeothermalandhotdryrocksfromgeothermalsurveyandevaluationaspects.Finally,theauthorspredictthedevelopmenttrendofthefuturegeothermalresearchtobenefitgeothermalandhotdryrockresearch.
简介:Overthepastfiveyears,wehavebeenmakingeffortstodevelopapracticalandpredictivetooltoexploreforgiantoredepositsinhydrothermalsystems.Towardsthisgoal,asignificantprogresshasbeenmadetowardsabetterunderstandingofthebasicphysicalandchemicalprocessesbehindorebodyformationandmineralizationinhydrothermalsystems.
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简介:MajorFactorsControllingCalciteDissolutioninHydrothermalKarstSystemsWangYanxin;TangZhonghua(FacultyofEnvironmentalScienceandGe...
简介:<正>TheDevonianhydrotyermalsedimentationandmineralizationarewidespreadandtypicalinMaizi、KelangandChonghuerbasinsofsouthernAltaymargin,andhavetheirrespectivesignsinoccurrence,fabricandgeochemistry.Hydr)thermalsedimentaryrocksmainlyoccurintheintermittentperiodbetweenvolcanicsub(?)ycles.Theyarethin-midium-bedded,lenticularandbasicallyuniformtotheoccurrencesoftheoverlyingandunderlyingstrata.Theclassificationofthehydrothermalsedimentaryrocksisproposedbasedonthemineralcompositions.Thedetaileddescriptionsaregiventothefivetypesofhydrothermalsedimentaryrocks:silicates,feldspar-richrocks,
简介:Rehai,位于云南省的Tengchong暴烈的地热的区域的南部的部分的一个高温度的热水的系统,被集中的热水的活动描绘。在到目前为止被取样了的Rehai的温泉是Na-HCO<潜水艇class=“a-plus-plus”>3-Cl或Na-HCO<潜水艇class=“a-plus-plus”>3在Diretiyanqu除了那跳(经历地热的区域)它是一个酸硫酸盐弹簧。在有岩浆的高温度的热水的系统的同样典型的典型解决方案成分作为热采购原料,Cl,B并且作为在Rehai,地热的水主要从magmatic液体的增加发源。然而,两magmatic液体和水库hostrocks的溶解混合在Rehai地热的水里贡献氟化物的丰富,尽管他们的氟化物集中被由在答案氟化物和钙集中之间的一种清楚的否定关系显示了的荧石的溶解度首先控制。高得多的集中那么<潜水艇class=“a-plus-plus”>4<啜class=“a-plus-plus”>在Diretiyanqu春天的2作为与在Rehai的另外的弹簧outcropping相比暗示相当不同的geochemical开始这个弹簧。H<潜水艇class=“a-plus-plus”>2S富有的蒸汽,在煮过程期间与深地热的液体分开了(即,断热的冷却),能上升到它与冷地下水被混合并且氧化的浅含水土层。尽管仅仅这种类型的一个弹簧在这研究的领域调查期间被取样了,充满硫酸盐的温泉通常是的酸在这形成了举止。
简介:Thegeochemicalbehaviorsofhydrogenandoxygenisotopesinthehydrothermalsystemandtheirinher-entrelationshipwiththewater/rockexchangearediscussedinthispaperInadditiontothetemperaturecon-ditions,theeffectiveW/RratioisanotherfactorcontrollingthechangesinHandOisotopecompositionsofthealteredrockandhydrothermalwater.Besides,theapplicationandgeologicalsignificanceofthewater-rockexchangetheoryarealsodiscussedinthelightoftheHandOisotopecompositionsandtheirvariationcharac-teristicsofthemineralizinghydrothermalwaterandalteredrocksfromseveralmineraldeposits.Finally,abriefevolutionalmodelofHandOistotopecompositionsofmeteoricandmagmatichydrothermalwatersinahydrothermalsystemisgiven.
简介:1IntroductionDengfuxianorefieldliesattheintersectionoftheQin-HangCombinedZone(QCZ)andtheNanlingMetallogenic,andcomprisesXiangdongW-Sndeposit(AlsoknownasDengfuxianW-Sndeposit),Jiguanshi
简介:TheorematerialoftwometallogencticseriesofhydrothermaldepositsrelatedtomagmaticrocksinsouthHunanwaspolymictic,whichdcrivcdmainlyfrommagmasandpartlyfromsourccbeds’Thed6positsinXianghualingtin-polymetallicorcficldwcreregardedtobelongtomagmaticmetal-lOgeneticscricsofremeltingcontincntalcrust.TheXianghua
简介:Forthefirsttime,wepresenttherareearthelement(REE)andsulfurisotopiccompositionofhydrothermalprecipitatesrecoveredfromtheTangyinhydrothermalfield(THF),OkinawaTroughatawaterdepthof1206m.Thenaturalsulfursamplesexhibitthelowest∑REEconcentrations(∑REE=0.65×10^-6-4.580×10^-6)followedbymetalsulfides(∑REE=1.71×10^-6-11.63×10^-6).Bycontrast,thenaturalsulfur-sedimentsampleshavemaximum∑REEconcentrations(∑REE=11.54×10^-6-33.06×10^-6),significantlylowerthanthoseofthevolcanicandsedimentsamples.Nevertheless,theδEu,δCe,(La/Yb)N,La/Sm,(Gd/Yb)Nandnormalizedpatternsofthenaturalsulfurandmetalsulfideshowthemostsimilaritytothesediment.MosthydrothermalprecipitatesamplesarecharacterizedbyenrichmentsofLREE(LREE/HREE=10.09-24.53)aridslightlynegativeEuanomaliesornoanomaly(δEu=0.48-0.99),whicharedifferentfromthehydrothermalfluidfromsediment-freemid-oceanicridgesandback-arebasins,butidenticaltothesulfidesfromtheJadehydrothermalfield.Thelowertemperatureandmoreoxidizingconditionsproducedbythemixingbetweenseawaterandhydrothermalfluidsfurtherattenuatetheleachingabilityofhydrothermalfluid,inducinglowerREEconcentrationsfornaturalsulfurcomparedwithmetalsulfide;meanwhile,thenegativeEuanomalyisalsoweakenedoralmostabsent.Thesulfurisotopiccompositionsofthenaturalsulfur(δ^34S=3.20‰-5.01‰,mean4.23‰)andmetalsulfidesamples(δ34S=0.82‰-0.89‰,mean0.85‰)revealthatthesulfurofthechimneyissourcedfrommagmaticdegassing.
简介:TheoccurrencesofassociatedelementsandtheirgeneticfactorsintheNo.30coalseamintheZhijinCoalfieldwerestudiedusinginstrumentalneutronactivationanalysis,inductivelycoupledplasma-atomicemissionspectroscopy,andascanningelectronmicroscopeequippedwithanenergy-dispersiveX-rayanalyzer.And,amicroscopephotometersystem(LeitzMPV-Ⅲ)wasusedtoobservethecharacteristicsofcoalpetrology.Accordingtotheinfluencedegreebythesiliceouslow-temperaturehydrothermalfluids,theorganicmatterisdividedintofourtypes:A,B,C,andDofthehydrothermally-alteredorganicmatter(HAOM).ThestudyshowsthatthehighcontentofFe(2.31%)isnotfrompyrite,butmostlyfromthesiliceouslow-temperaturehydrothermalfluids.Theoccurrencesoftheassociatedelementsinthefourorganicmattertypesaredifferent.ThecontentsofFe,Si,andAlaredecreasing,butSandCuareincreasingintheorderoftheHAOM-A,HAOM-B,HAOM-C,andHAOM-D.Thelosingrateofsulfurinorganicmatteris0.35%andthecontentofFetakenfromthelow-temperaturehydrothermalfluidsintotheorganicmatteris0.794%duringthesiliceouslow-temperaturehydrothermalfluidsinvadingthecoalseam.Theabovefactsindicatethatthelow-temperaturehydrothermalfluidsplayacrucialroleinthere-distributionsandoccurrencesofassociatedelementsincoal.