西藏班-怒成礦帶多龍礦集區(qū)斑巖銅礦綜合信息找礦預(yù)測(cè)

西藏班-怒成礦帶多龍礦集區(qū)斑巖銅礦綜合信息找礦預(yù)測(cè)西藏班-怒成礦帶多龍礦集區(qū)斑巖銅礦綜合信息找礦預(yù)測(cè)

摘要：

本文以西藏班-怒成礦帶多龍礦集區(qū)為研究對(duì)象，采用綜合信息法對(duì)該區(qū)域的斑巖銅礦找礦預(yù)測(cè)進(jìn)行了研究。通過野外地質(zhì)調(diào)查、巖礦物分析、地球物理勘探、遙感圖像解譯等手段，分析了該區(qū)域的地質(zhì)構(gòu)造、巖石類型、礦物組成、地球物理特征等，綜合判斷該區(qū)域潛在的礦產(chǎn)資源。

研究發(fā)現(xiàn)，該區(qū)域主要由拉薩巖體、班公巖體和深灰?guī)r體等構(gòu)成，其中班公巖體侵入拉薩巖體形成了一系列斑巖巖體。拉薩巖體和深灰?guī)r體的時(shí)代相對(duì)較老，形成于早侏羅世，班公巖體的時(shí)代相對(duì)較新，形成于晚侏羅世。該區(qū)域礦化類型以斑巖型銅礦為主，礦體多呈巖體外圍緣部狀帶狀、網(wǎng)狀和脈狀等形態(tài)。地球物理勘探顯示該區(qū)域存在明顯的礦化異常和電性異常，這也為該區(qū)域的斑巖銅礦找礦提供了可靠的依據(jù)。

綜合以上信息，我們推斷該區(qū)域潛在的銅礦資源較為豐富，有較大的找礦前景。針對(duì)該預(yù)測(cè)結(jié)果，我們建議加大勘查力度，深化礦產(chǎn)資源調(diào)查，開展詳細(xì)的地質(zhì)、地球物理、遙感和化探等方面的工作，以進(jìn)一步明確區(qū)域內(nèi)的礦產(chǎn)類型、規(guī)模和分布特征，為后續(xù)的礦產(chǎn)勘探和開發(fā)提供準(zhǔn)確、可靠的數(shù)據(jù)支持。

關(guān)鍵詞：西藏班-怒成礦帶；多龍礦集區(qū)；斑巖銅礦；綜合信息找礦預(yù)測(cè)；礦化類型；地球物理特征

Introduction:

TheBan-Nu-ChengmineralizationbeltislocatedintheeasternpartoftheQinghai-TibetPlateau.Itisanimportantcopper-polymetallicmineralizationbeltwithrichmetallogenicelementsandpotentialmineralresources.TheDuolongoreclusterareaisanimportantpartofthisbelt,whichischaracterizedbycomplexgeologicalstructuresandstrongmineralization.

AsthemostimportanttypeofmineralizationintheBan-Nu-Chengmineralizationbelt,theporphyrycopperdepositshavehigheconomicvalueandexplorationpotential.Therefore,thecomprehensiveinformation-basedprospectingmethodisappliedtopredicttheprospectingtargetoftheDuolongoreclusterarea.

Method:

Fieldgeologicalinvestigation,rockandmineralanalysis,geophysicalexploration,remotesensingimageinterpretationandothermethodswereusedtoanalyzethegeologicalstructure,rocktypes,mineralcomposition,geophysicalcharacteristics,andotherinformationofthestudyarea,andtodeterminethepotentialmineralresourcesofthearea.

Results:

ThestudyrevealsthattheDuolongoreclusterareaismainlycomposedoftheLhasagranite,BangongCogranite,anddeepgrayrocks.TheBangongCograniteintrudedintotheLhasagranitetoformaseriesofporphyrybodies.TheLhasagraniteanddeepgrayrocksarerelativelyolderandwereformedintheEarlyJurassic,whiletheBangongCograniteisrelativelyyoungerandwasformedintheLateJurassic.Themineralizationtypeoftheareaismainlyporphyrycopperdeposits,andtheorebodiesaremostlyintheformofperipheralbands,net-like,orvein-likewithintherockbodies.Geophysicalexplorationshowedthatthereareobviousmineralizationanomaliesandelectricalanomaliesinthearea,whichprovidesreliablebasisfortheprospectingofporphyrycopperdeposits.

Conclusion:

Basedonthecomprehensiveanalysisofthegeologicalstructure,rocktypes,mineralcomposition,geophysicalcharacteristics,andotherinformationoftheDuolongoreclusterarea,wesuggestthatthereisrichpotentialcopperresourcesinthisarea,andtherearelargeprospectsforprospecting.Therefore,itisrecommendedtocarryoutfurthergeological,geophysical,remotesensing,andgeochemicalexplorationtoclarifythetype,scale,anddistributioncharacteristicsofthemineralresourcesinthisarea,andtoprovideaccurateandreliabledatasupportforsubsequentmineralexplorationanddevelopment.

Keywords:Ban-Nu-Chengmineralizationbelt,Duolongoreclusterarea,porphyrycopperdeposits,comprehensiveinformation-basedprospecting,mineralizationtype,geophysicalcharacteristics.Discussion:

TheBan-Nu-Chengmineralizationbeltisasignificantcopper-polymetallicmineralizationbeltinChina,whichhasattractedwidespreadattentionfromscholarsandexplorationcompanies.TheDuolongoreclusterareaislocatedinthecentralpartofthisbeltandisoneofthemostimportantareasforporphyrycopperdeposits.Thecomprehensiveinformation-basedprospectingmethodisaneffectivewaytoidentifypotentialmineralresourcesinthearea.

Geologicalfeatures:

TheDuolongoreclusterareaisacomplexgeologicalenvironment,whichisdominatedbytheLhasagranite,BangongCogranite,anddeepgrayrocks.TheLhasagraniteiscomposedofbiotitegraniteandmuscovitegranitewitharelativelyfinegrainsize,whiletheBangongCograniteiscomposedofbiotitegranitewitharelativelycoarsegrainsize.Thedeepgrayrocksarecharacterizedbyfine-grainedsedimentaryrocks,suchasslateandphyllite.

ThegeologicalstructureoftheDuolongoreclusterareaisdominatedbyfaultingandfolding,whichcausedsignificantchangesinthestratigraphicsequenceandgeologicalenvironment.TheareaisgenerallycoveredbyQuaternarysediments,whichmakefieldworkandexplorationmoredifficult.

Mineralizationtype:

TheporphyrycopperdepositsarethemostimportanttypeofmineralizationintheBan-Nu-Chengmineralizationbelt,andtheDuolongoreclusterareaisnoexception.ThemineralizationismainlyhostedbytheBangongCograniteandtheassociatedintrusiverocks,whichwereformedduringtheJurassicperiod.Thealterationzonesaremainlycharacterizedbypotassic,phyllic,andpropyliticalteration,withthepotassicalterationbeingthemosttypical.

IntheDuolongoreclusterarea,theporphyrycopperdepositsaregenerallyassociatedwithmolybdenum,gold,andothermetals.Theoccurrenceofthesemetalshassignificantimplicationsfortheprospectinganddevelopmentofthearea.

Geophysicalcharacteristics:

GeophysicalexplorationisanimportantmethodtoinvestigatethemineralizationintheDuolongoreclusterarea.Thegeophysicalmethodsincludemagneticsurvey,inducedpolarizationsurvey,resistivitysurvey,andgravitysurvey.Thesemethodshavebeenwidelyusedinthearea,andtheresultshaveprovidedimportantinformationfortheidentificationofpotentialmineralresources.

Themagneticdatashowedthattheareaischaracterizedbydistinctmagneticanomalies,whichindicatethepresenceofporphyrycopperdeposits.Theinducedpolarizationsurveyandresistivitysurveyshowedthatthemineralizedzoneshaverelativelyhighelectricalconductivityandlowresistivity,whicharetypicalfeaturesofporphyrycopperdeposits.Thegravitysurveyindicatedthattheareaischaracterizedbylowgravityanomalies,whichsuggestthepresenceofmineralizedrockswithlowdensity.

Conclusions:

TheDuolongoreclusterareaisanimportantprospectingtargetforporphyrycopperdepositsintheBan-Nu-Chengmineralizationbelt.Thecomprehensiveinformation-basedprospectingmethodisaneffectivewaytoidentifypotentialmineralresourcesinthearea.

Thegeologicalfeaturesoftheareaarecomplex,andthemineralizationismainlyhosted