简介：Variationsinthedistributionsofcarbazolesanddibenzothiopheneswereinvestigatedinasetofsourcerocks,whichdiffermainlyintheirmaturitylevelsduringimmature-maturestages.Acomparisonofthedistributionsofcarbazolesanddibenzothiopheneshasrevealedthemainresultsasfollows:variationsintherelativeamounts①ofC0-,C1-,C2-dibenzothiophenesshowalowcorrelationwiththatofthecorrespondingcarbazoles,withtheformer'sbeingmuchhigherthanthelatter's;variationsintherelativeamountsofmethyldibe②nzothiopheneisomersalsodisplayalowcorrelationwiththatofthecorrespondingmethylcarbazoles,with4-/4-+1-methyldibenzothiopheneratiorangingfrom0.52to0.96,whilethecorrespondingcarbazoleratioof1-/1-+4-methylcarbazoleonlybeing0.71±0.05;themat③urityparameterfor4,6-/4,6-+1,4-dimethyldibenzothiohene,rangingfrom0.34to0.75,showsaremarkablelinearcorrelationwiththecorrespondingratioof1,8-/1,8-+1,4-dimethylcarbazole(R2>0.84).Theun-correlationmayindicatesomedifferentgeological-geochemicalfatesforsomeisomersofdibenzothiophenesandcarbazoles.Thehighcorrelationmayrevealastrongmaturationdependenceonthedimethylcarbazoledistributions,indicatingthatattentionshouldbepaidwhen1,8-/1,8-+1,4-dimethylcarbazoleisusedasapetroleummigrationindicator.

简介：StrataofdifferentgeologicalperiodsextensivelyoutcropinwesternGuang-dongProvince,butmostgolddepositsarerestrictedtotheMiddle-LateProterozoicYunkaiGroupandtheCambrianBacunGroup,showingobviousstrata-bouncharacter-istics.GoldabundanceandtraceelementgeochemistryoftheYunkaiandBacunGroupsarecomparedwiththoseoftheOrdovicianandSilurianstrta.TheYunkaiGroupisconsideredtobethesourcestrataforgoldmineralizationintheregion.

简介：Thegolddeposits,occurringinthesouthsubzoneofwesternQinling,aretheonlytypicalandimportantstrata-boundgolddeposits,whichareassociatedwithsubmarineexhalativesedimentation.ThegolddepositsincludetheLa'ermaoredeposit,theQiongmooredepositandtheYaxiangoreoccurrence.TheyarehosteditheCambriansilicaliteformationcomposedofblackchertandslate.Thepresenceoftypicalchertoffersimportantevidencetoevaluatethepossiblesubmarineexhalativesystemanditsroleintheformationofthegolddeposits,whicharecloselyassociatedwithperoclationanddiffusioninthehorizontal,verticalandaxialdirections,Element-assemblagezonationisclearlyseenduetodifferencesinelementconcentrationsindifferentdirections,Suchazonationmakesgold.selenium,uranium,copper,stibium,molybdenum,mercury,etc,precipitateintheformofsimpleorcompositeorebodies.Theestablishentoftheelement-assemblagezonationishighlyhelpfulforevaluatingdirectlythemetallogenesisofgolddeposits.

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简介：Inthisstudy,anelectronmicroprobeanalyzer(EMPA)wasusedtomapthespatialdistributionandtheoccurrenceofinvisiblegoldinpyritefromtheLiulinchagoldorebelt.EPMAdatashowthatgoldmainlyoccursassubmicroscopic-microscopicinclusions.FromthecontrastofthemajorguideelementsofpyritefromtheLiulinchagoldorebeltandthosefromfourhydrothermal-typegolddepositsintheJiaodongregion,wecanseethepyriteswereformedintwostages:thepyritefromwallrockismainlysedimentogenic,withsimplestructure;andthepyritefromorebodyexperiencedearlysedimentaryprocesstolatehydrothermalactivity,thepyriteisregularincrystalformandexhibitsfracturedstructure.

简介：Pressuresolutionisacommonphenomenoninmassivesulphidezinc-leaddepositsofwesternCanadaandmayhavebeenanimportantfactorleadingtothemobilizationofore-formingmaterialsduringdiagenesis,deformationandmetamorphismofsedimentaryores.Thecontrolofductileshearzonesovergoldmineralizationcouldbeexplainedinviewofpressuresolutionofgold-bearingminer-alsundershearingstressandthetesultantmobilizationofthismetal.

简介：在Ninglang的Tongchanghe本国的铜辉铜矿存款在西方的云南的low-Tibasalts发生，并且充满差错的&交代作用metallogenesis的模式显示这存款具有迟了阶段的热水的起源。这使定义形成矿石的材料的来源更复杂。这篇论文介绍喜玛拉雅的alkali-richporphyries的Pb同位素数据，地区性早中间原生地变质岩地下室和在有一次尝试到的西方的云南的采矿区域的岩石的各种各样的类型在Ninglang抑制Tongchanghenative铜辉铜矿存款的起源。结果证明矿石在Pb同位素组成是相对同类的，暗示简单形成矿石的材料来源。在喜玛拉雅的充满碱的斑岩的Pb同位素的比率的三个集合都比矿石的那些高；地区性的地下室变质岩表演在Pb同位素的比率的大量变化，与矿石铅的同位素组成相当不同；三叠纪的沉积岩和泥石头和淤泥石头的Pb同位素组成内部在晚二叠的HeinishaoFormation的床(相应于向前玄武岩的爆发骑车)在采矿，区域有放射产生的铅的特征并且与矿石铅的同位素组成显著地不同；象矿石一样，在地区性散布的采矿区域和那些的Emeishan暗岩拥有一样的Pb同位素组成，显示出关于他们的分发范围的完全的重叠。从上面，可能性能被排除Tongchanghe存款的ore-formingmaterials从地下室被导出，许多喜玛拉雅的magmaticactivities，等等。形成矿石的材料主要从theEmeishan暗岩被导出，这从而被定义。从可得到的数据，发生在Emeishan暗岩分布式的区域的本国的cupper-chalcocite-typemetallogenesis让一样的金属采购著名计算机生产厂商，这被推出他Tongchanghe沉积物。

简介：Delaminationoccursmainlyinthelithosphericmantle,involvinginteractionwiththeasthenosphere,theprocessofwhichishardtoobservedirectly.ourresearchongranitoidsinthewesternkunlunorogenicbelt,China,indicatesthathighconterntsoftheheat-producingelementsThandUmayfurnishlithosphericdelaminationwithnewevidence,Atthesametime,wehaveestablishedtheTh-SiOandU-SiO2diagramstodiscriminatedelamination.

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