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1、国际标准期刊编号1075-7015,矿床地质学,2008年,第50卷,第5号,第404–422页。©Pleiades出版有限公司,2008年。原文为俄文©E.E.Amplieva,2008年出版于GeologiyaRudnykhMestorozhdenii,2008年,第50卷,第5号,第459–480页。岩浆流体型海底沉积物矿床的例证—俄罗斯南乌拉尔塔尔干块状硫化物矿床E.E.Amplieva俄罗斯科学院矿床地质,岩石学,矿物学,地球化学研究所,Staromonetnyiper.35,莫斯科,俄罗斯1190172008年5月20日收到文章摘要—Thesequenceoforeb
2、odyformationattheTalganmassivesulfidedeposit;morphologyofsulfideorebodies;mineralogy,texture,andstructureofore;chemicalcompositionofminerals;andfluidinclusionsandrelationshipsbetweenstableisotopes(S,C,O)insulfidesfromoresandcarbonaterocksarediscussed.ThedepositislocalizedintheUzel’gaorefieldo
3、fthenorthernMagnitogorskMegazone.ThesulfideoreishostedintheupperfelsicsequenceoftheMiddleDevonianKaramalytashFormation,composedofbasalt,basalticandesite,andrhyodacite.Orebodiesareirregularlenseslyingconformablywithhostrocks.Pyrite,chalcopyrite,sphalerite,andfahlorearethemajororeminerals;galen
4、a,bornite,andhematiteareofsubordinateabundance.Sulfidemineralizationbearsattributesofdepositionundersubseafloorconditions.Thecarbonateandrhyoliteinterlayersattheroofsoforebodiesandthesupraorelimestonesequenceservedasscreens.Zoningtypicalofmassivesulfidedepositswasnotestablished.Thestudyofflui
5、dinclusionshasshownthatthetemperatureofthehydrothermalsolutionvariedfrom375to110°C.δ34S‰rangesfrom–2.4to+3.2‰inpyrite,from–1.2to+2.8‰inchalcopyrite,andfrom–3.5to+3.0‰insphalerite(CDT).Theseparameterscorrespondtoanisotopiccompositionofmagmaticsulfurwithoutanotablepercentageofsulfatesulfur.δ13C
6、andδ18Oofcarbonatesvaryfrom–18.1to+5.9‰(PDB)andfrom+13.7to+27.8‰(SMOW),respectively.Thecarbonandoxygenisotopiccompositionsofcarbonatesfromoresandhostrocksmarkedlydeviatefromthefieldofmarinecar-bonates;adeepsourceofcarbonissuggested.TheresultsobtainedshowthatthemainmassofpolysulfideoreattheTal
7、gandepositwasformedbeneaththefloorofapaleoocean.Theore-formingsystemwasshort-livedanditsfunctioningdidnotgiverisetotheformationofzonalorebodies.Magmaticfluidplayedtheleadingroleinmineralformation.数字对象识别:10.1134/S1075701508050048引言塔尔干(Talgan)块