简介：Ｅｌｅｃｔｒｏｍａｇｎｅｔｉｃｔｏｍｏｇｒａｐｈｙ：ｃｏｎｓｉｓｔｅｎｃｙｏｆｉｍａｇｅｓａｎｄｇｒｏｕｎｄｗａｔｅｒｐｒｏｓｐｅｃｔｉｎｇＲＵＩＦＥＮＧ１）（冯锐）ＫＵＩＸＩＡＮＧＭＡ２）（马奎祥）ＨＯＮＧＧＵＯ３）（郭鸿）ＣＨＡＮＧＱＵＡＮ...

简介：Sediment-hostedgolddepositsarethemajortypeofgoldresourcesinchina,Concentratedmostlyinthetwo'TriangleRegios',theyaregenerallyhostedinfine-clasticturbidite,hydrothermalchetandmarlrangingfromcambriantoTriassicinage,structurallycontrolledbydomes,anticlinesandsecond-orderedfaults.TheyaresimilartotheCarlin-typegolddepositsinmineralassemblageandgeochemicalmarks,withanelementassociationcloselycomparabletothoseofmodernspringsandsubmarinehydrothermalsediments.Organicmattermayhaveplayedanimportantroleinmineralization.Theoresolutionmaybehydrothermallyalteredmeteoricwaterdevelopediareasoflocalgeothermalanomaly.

简介：Oil-gasremotesensinginformationisobtainedfromsatelliteTMdatathroughgraphictreatmentinthelightofthehydrocarbon-microseepagetheory.Theninetargetareas(ofthreetypes)selectedonthisbasisconcidewellwiththeoccurrenceofnaturalgasesandhavebeenprovedbysubsequentprospecting.Plantsinthetargetgreasarecharacterized.asaresultofhydrocarbon-microseepage,byabnormalspectralfeatureswiththeabsorptionpeaksofchlorophyllshiftingtowardbluelight,reflectivityintherangeofvisiblelightincreasingandreflectivityinthenearinfraredregiondecreasing.

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简介：ShanjiadistrictofeastcrnHcbciProvinccislocatcdinsouthcrnlimbofEWtrcndingYanshangeodomechain,whichbe1ongstoHchuaidiwasystcmofNorthC!1inadiwarcgion.Inthestudiedarca,morethanlogolddcposits(occurrenccs)wcrcdistributed,includingShanjia,Xinglonggou,WangjiagouandWcizigougo1dMincs’Archcanmctamorphicrocksare

简介：TheLancangjiangtectoniczoneinWesternYunnanisanimportantmagmatic,metamorphicandtectonicmobilezoneofSouthwesternChina,whosegeotectoniclocationisveryunique.Itischaracterizedbycomplexgeologicalstructures,perfectlydevelopedstrata,frequentmagmaticactivities,,variousdegreesofmetamorphism,richoreresourcesandlotsofmetaldeposits,thusformedacentralizedzoneofmineralizationandalsoconstitutedoneoftheimportantmetallogenicbeltsofnobleandnonferrousmetaldeposits.

简介：Thesuperlargecontinentalvolcanicrock-typeuraniumdeposits,whichwerediscoveredabroadlongago,havenotyebeenreporteduptonowinChina.Thisisanimportantproblemthatneedstobeurgentlysolvedbyuraniumgeologistsatpresent.Inthispaper,onthebasisofanalyzingthemetallogenicsettingsandgeologicalconditionsofthesuperlargecontinentalvolcanicrock-typeuraniumdepositsdiscoveredintheworldalongwiththemetallogeniccharacteristicsofthoseofthesametypeinChina,thespace-timedistributionpatternsofcontinentalvolcanicsandthemetallogenicpotentialofmaintectono-volcanicbeltsinChinaarediscussed,andasyntheticconclusionhasbeendrawnthatthereisapossibilitytodiscoverthesuperlargecontinentalvolcanicrock-typeuraniumdepositsinChina.Moreover,itisevidencedthattheGanhang,Nanling,Yanliao,DaHingganLingandothertectono-volcanicbeltspossessfavorablegeologicalconditionsfortheformationofssuperlargeoredepositsofthecontinentalvolcanicrocktype.Theintersectingandoverlappinglocationsoftheaforementionedmainbeltswithothertectono-volcanic(-intrusive)beltsarethemostpotentialareaswherethesuperlargecontinentalvolcanicrock-typeuraniumdepositswouldbefound.

简介：<正>O.IntroductionGoldiscommonlyconsideredaninertelement,butitsgeochemicalpropertiesarenotsoinert.Intheareaofgolddepositstheconecntra-tionsofgoldinwaterarehigh.Itcannotonlymigrateinwater,butalsoeasilyprecipitateifthechemicalconditionschange.Thisisimpor-tantbothinprospectingforgoldbyhydrogeochemicalmethods,andingoldformation.

简介：BiogeochemicalinvestigationofTamarixaphylla,aplantspecies,oftheLas-belaareahasbeenmade.Thisareamainlyconsistsofophiolitesassociatedwithsed-imentaryrocksofJurassicandCretaceousage.QuantitativeestimationsofimportantbiogenictraceelementssuchasFe,Mn,Pb,Zn,Cu,Cr,Ni,andCohavebeencarriedout.Anomalousconcentrationsoftheseelementsinplantspeciesofcertainregionscanbeusedtolocatepossibleoccurrencesoforedepositsinthearea.Thecomparativestrdyalsorevealsappreciablevariationsinthecompositionoftraceelementsinplants.ThepossiblecausesofvariationintheconstitrentsofTamarixaphyllafromdifferentlocalitieshavebeendiscussedinthelightofbedrocknature,mo-bilityofelementandaverageabundanceintheplant.

简介：Thespectralcharactersofhydrocarbonsinsomeoil-bearingstrataandsoillayersoueroilandgasreservoirsintheJunggarBasinandnorthernTarimBasininXinjngarecomparedwiththoseofchemicallypurehydrocarbons.Thehydrocarbonsarecharacterizedbythebi-absorptionat2310nmand2350nm.Hydrocarbonandradioactiveanomaliesinoilandgasterrainsarefoundmuchmorewidespreadthancarbonatealterations.Basedonthespectraofheavyhydrocarbonsrelatedtooilbetween2270nmand2460nmandrefineddatatreatment,remotesensingmayholdencouragingpromiseasadirectlyprospectingtechniqueforoilandgasresources.

简介：Summarizingtheexistingdataofseismologicalandgeologicalinvestigationsanclorstrongandintermediate-strongearthquakesintheSichuanbasinanditsadjacentareasaccumulatedbytheseismologicalandpetroleumorganizationsinSichuanandoftheresultsofseismicprospectinganddetailedexplorationinChengdudepressionduringthelast20yearspermittednstostudythetypesanddistributionofhiddenstructuresinChengdudepressionanditsadjacentareas,inparticular,toidentifyindetailthe"hiddenfaults"intheChenngdu-Deyangareaontheonehand;TheobtaineddataindicatethattheNE-trendingXinjinfaultrunsnorthwardanddiesoutinthesouthofPenzhentownofShuangiiuCounty.Meanwhile,westudiedgeneticrelationsofseismicactivitytoactivefaultsandtheircorrespondingmovementcharacteristicsontheotherhand.Moreover,thesurfacefaultsanddeep-seatedfaultsareclearlydefinedandoutlined,and5typesofseismogenicfaultssuggested.TheknowledgethusobtainedenablesustodelimitthefocalzonesforpotentialstrongearthquakesinChengdudepression.Thestudysuggeststhatazoneof40kmwideandmorethan100kmlongonsidesalongtheChengdu-Deyanglinehasastableseismogeologicalbackgroundandgoodengineering-seismologicalconditions.