简介：Polygeneticcompoundoredepositsaremostlycharacterizedby"FIVEMANYS":manytectonicmetallogenctiestages,manymetallogenetieproccsses,manymctallogeneticmaterialsourees,manymetallogeneticcontrollingfactorsandmanymctallogenetietroes.Theyareformedincertaingeoteeton-icbackgroundandconditions.Ascxpoundedbythewr

简介：Asanimportantpartofanepidermicsystem,terrestrialdepositscanprovideagoodrecordofmajorgeologicaleventsintheCretaceousepidemicsystem.Thisarticleisareviewofthegeologicalbackground,paleogeography,paleoclimate,basinevolutionandsedimentarycharacteristicsinChinathroughtheCretaceousperiod,inordertoprovideacomprehensiveunderstandingforinterestedresearchers.DuringtheBerriasian-Hauterivianage,red-mainlyfluvialandshallowlacustrinedepositiondevelopedunderaridandsemi-aridclimatesinwestenChinawheneasternChinahadbeenoccupiedbythe"EastPlateau”.DuringtheBarremian-Albian,agecoal-bearingdepositionsoccurredtothenorthoftheYanshanMountainunderthewetandwarmclimate.However,mainlyredfluvialandshallowlacustrinedepositionsprevailedinmostofthesouthtotheYanshanMountainexceptbasinswhereseawatercouldenterandcausedmostlygreendepositions.DuringtheCenomanian-Santonianage,highlanduplifttookplaceinnorthwesternChina.MainlyreddepositionwithdevelopedalluvialplainsoccupiedsouthwesternChinaandSouthChinawhentheSongliaoBasinwasfilledbyblackdeeplacustrinemudshalecausedbytransgression.Mainlyreddepositionunderanaridandsemi-aridclimateoccupiedallbasinsinChinaduringtheCampanian-Maastrichtianage.

简介：ＣｏｐｐｅｒｄｅｐｏｓｉｔｉｓｏｎｅｏｆｔｈｅｍｏｓｔｉｍｐｏｒｔａｎｔａｎｄｗｉｄｅｓｐｒｅａｄｏｒｅｓｉｎＣｈｉｎａ．ＴｈｅｃｏｐｐｅｒｍｅｔａｌｏｇｅｎｙｉｎＣｈｉｎａｒｅｖｅａｌｓａｃｏｍｐｌｉｃａｔｅｄｔｅｃｔｏｎｉｃｅｖｏｌｕｔｉｏｎｈｉ...

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简介：ThemetallogenictheoryofpolygeneticcompoundoredepositistheImportantbasisforlocationpredictionofhiddenoredepositsindiwaregions.Itcanplayanimportantroleineachstepofpredictionresearch,targetingprocedure,acquiringinformationandintegratinginformation.Inthispaper,theauthorsdiscusseshowtoconstructgeologicalconceptbyusingofthemetallogenictheoryofpolygeneticoredepositsforpredictingtargetingarea,toarrangeinvestigationanddetectionforgettingenoughusefulinformation,andtoanalyzeandintegrateinformationforreachingatrustfulpredictionconclusion.Accordingtothesestrategies,weconductasuccessfulpredictionoflocationofhiddenorebodiesintheouteroftheFenghuangshancoppermine,aprincipalproducingmineinTonglingCu-Audistrict.

简介：Theso-called“Yangtze-type”copperdepositsinclude:（1）Cu-bearingmassivepyritebed,(2)Cu-bearingskarnandmagnetite-typeoredeposits,withreplacementCu-vein-typedepositsnearthemetasomaticzone,and(3)mineralizedintrusivebodiesandbrecciapipes,someofwhichareknownasporphyrycopperores(e.g.Chengmenshan).ThistypeoforedepositsisatypicalexampletoverifythepolygenesisofinostofthedepositsinChina,ashasbeenpromotedbyProf.TuGuangchiinviewofthepolycyclicdevelopmentofthegeologicalhistoryinChina.Thispaperiscon-cemedwithonesub-typeofsuchdeposits.

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简介：Theauthorsstudiedthebiomarkers(alkanes)ofeightironoresamplesfromNianpanshanandDsbaoduiofPangjiabaoandLongguan,Xuanhua,Hebei.ThesesampleshavehighernC15-nC20contents,withmainpeaksatnC16,nC17andnC18,andcontainabundantpristaneandphytane.Theseresultsindicatethatironstromatoliteandirononcolitesinorebodiesaresedimentarystructuresofalgalorigin.Sedimentaryironaccumulationmainlyresultsfromactivityofbluealgae.ThisstudyprovidesnewvaluableevidencefortheoriginofXuanlong-typeirondeposits.

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简介：Principalthesesoffocustectoniesandmetallogenyofactiveregion(unlinearmetallogeny)arecloseinspace-genetieaspectes,ageandparticularyinorecontent(tablel).MetallogcnicanalysisofdataondcpositdistributioninthcfoCus8tructurcs(structurcsofCcntraltypc-SCT)andinthcirconccntriczonc8,conductcdonthebaseofSCTidcaa

简介：Overthepastfiveyears,wehavebeenmakingeffortstodevelopapracticalandpredictivetooltoexploreforgiantoredepositsinhydrothermalsystems.Towardsthisgoal,asignificantprogresshasbeenmadetowardsabetterunderstandingofthebasicphysicalandchemicalprocessesbehindorebodyformationandmineralizationinhydrothermalsystems.

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简介：Chinaisamongthefewcountriesrichinpytophyllite.ItisinferioronlytoJapanandSouthKoreainprovedorerescrvesandranksthirdintheworldinperspectivereservesPyrophylliteoccurrencesinSupportcdbytheNaturalScienccFoundationofHunanProvinceandthcDirectorFoundationofChangshaInstituteofoeotectoniCS,ACademiaSinica.Chin

简介：白垩纪碳酸盐存款在伊朗的西北是更加广泛地分布式的并且形成大多数沉积单位与尖不顺从在这些单位上扔了的区域和不同新生代的paleohighs。西北的伊朗的白垩纪stratigraphic单位能被划分成三个主要范畴：碎屑状的、浅碳酸盐并且远洋。碎屑状的外形包括集团企业，角砾岩和有细密纹理的碎屑状的组和碳酸盐外形由公海(A)，酒吧(B)，泻湖(C)，和潮汐的公寓的microfacies的系列组成。有不同踪迹石块的相对深的碳酸盐存款也是在伊朗的西北的白垩纪沉积环境的更深的部分的指示。与狭窄的Neotethys海洋(Khoy-Zanjan)的扩大的参考，架边缘Neotethys海洋的沉积环境能为Azarshahr大不里士区域被假定，在Varaghan的海岸的flysch和clastics外形在此随深度的增加向北部分扔了。由在现在的学习期间使用不同沉积外形的狭窄的Neotethys海洋的扩大上的调查被看作在伊朗和中东的西北的区域完成白垩纪时间的paleogeographic数据的重要的步。

简介：<正>SoutheastChina,whichislocatedinthesoutheastsectionofEasternAsiaCrustobody,turnedintoDiwadevelopmentstage,i.e.,SoutheastChinaDiwaRegion,inMesozoicandCenozoiceraexperiencingthegeotectonicevolutionofpregeosyncline,geosynclineandplat-form.ThisisanimportantconcentrationregionofuraniumoredepositsinChina.Basedontheanalysesofregionalrockformationtypes,tectonicevents,magmatism,metamorphism,metallogenesis,featuresofgeophysicalandgeochemicalfieldsanddifferencesofcrustalevo-lutionandmovement,thisregioncanbeclassifiedintoseveralsecondarytectonicelements,

简介：Beforeintruding,primarymagmashaveundergoneliquationandpartialcrystallizationatdepth;asaresultthemagmasarepartitionedintobarrenmagma,ore-bearingmagma,ore-richmagmaandoremagma,whichthenascendandareinjectedintothepresentlocationsonceormultipletimes,thusformingoredeposits.Theabove-mentionedmineralizingprocessisknownasdeep-seatedmagmaticliquation-injectionmineralization.Thevolumeofthebarrenmagmaisgenerallymuchlargerthanthoseoftheore-bearingmagma,ore-richmagmaandoremagma.Intheascendingprocess,mostofthebarrenmagmaintrudesintodifferentlocationsoroutpoursontothegroundsurface,formingintrusionsorlavaflows.Therestbarrenmagma,ore-bearingmagma,ore-richmagmaandoremagmamayeithermultipletimesinjectintothesamespaceinwhichrocksandoresareformedorseparatelyinjectintodifferentspacesinwhichrocksandoresareformed.Theintrusionscontainingsuchdeep-seatedmagmaticliquation-injectiondepositshaveamuchsmallervolume,greaterorepotentialandhigheroregradethanthatofin-situmagmaticliquationdeposits.Consequentlythismineralizingprocessresultsintheformationoflargedepositsinsmallintrusions.

简介：ＳＰＡＴＩＯ┐ＴＥＭＰＯＲＡＬＤＩＳＴＲＩＢＵＴＩＯＮＯＦＮｉＤＥＰＯＳＩＴＳＴｈｅＮｉｄｅｐｏｓｉｔｓｉｎＣｈｉｎａａｒｅｄｉｓｔｒｉｂｕｔｅｄｉｎＧａｎｓｕ（Ｊｉｎｃｈｕａｎ），Ｘｉｎｊｉａｎｇ（Ｋａｒａｔｕｎｇｇｕ，Ｈｕａｎｇｓｈａｎ），Ｊｉｌ...

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