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《欽—杭成礦帶(南段)粵西塘蓬——長(zhǎng)山地化地物綜合異常及其找礦遠(yuǎn)景分析.pdf》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、礦物巖石地球化學(xué)通報(bào)·研究成果·BulletinofMineralogy,PetrologyandGeochemistryVo1.33No.3,May,2014欽一杭成礦帶(南段)粵西塘蓬長(zhǎng)山地化地物綜合異常及其找礦遠(yuǎn)景分析虞鵬鵬,周永章,陳宣諭。,梁錦,李紅中,高1.廣東省地質(zhì)過(guò)程與礦產(chǎn)資源探查重點(diǎn)實(shí)驗(yàn)室,廣州510275;2.中山大學(xué)地球科學(xué)與地質(zhì)工程學(xué)院地球環(huán)境與地球資源研究中心,廣州510275;3.中國(guó)科學(xué)院廣州地球化學(xué)研究所,廣州510640摘要:為尋找塘蓬長(zhǎng)山地區(qū)礦產(chǎn)資源,采用1:5萬(wàn)水
2、系沉積物測(cè)量和1:5萬(wàn)高精度磁場(chǎng)測(cè)量方法提取其中找礦信息。結(jié)果圈定出YC、YC、YC。三個(gè)綜合異常區(qū)域,并明顯地圈出Au、Ag、Pb、Zn中低溫元素組成的異常區(qū)和Cu、Bi、W、Sn高溫元素組合組成的異常區(qū),異常范圍大、強(qiáng)度高,晨布受斷裂帶控制明顯。1:5萬(wàn)高精度磁場(chǎng)總體呈北東走向展布,分為北部正值背景區(qū)(強(qiáng)度一般為0~100nT)和南部低緩負(fù)值背景區(qū)(強(qiáng)度一般為一110~一5OnT)。研究區(qū)內(nèi)沿石英脈兩側(cè)有以絹云母化、黃鐵礦化為主的圍巖蝕變現(xiàn)象。本文認(rèn)為區(qū)內(nèi)熱液型鉛鋅鎢錫多金屬礦床、石英脈型金(銀)
3、礦床有較好的找礦前景。關(guān)鍵詞:水系沉積物測(cè)量;高精度磁測(cè);地球化學(xué)異常;欽一杭成礦帶中圖分類號(hào):P612文獻(xiàn)標(biāo)志碼:A文章編號(hào):1007—2802(2014)03—0366一l1doi:10.3969/j.issn.1007—2802.2014.03.O11ComprehensiveGeochemicalandGeophysicalAnomaliesandOre-ProspectingPotentialoftheSouthSectionoftheQin—HangMetallogenicBelt,Tan
4、gpeng-ChangshanArea,WestGuangdongProvince,ChinaYUPeng—peng,ZHOUYong-zhang,CHENXuan—yu,LIANGJin~,LIHong—zhong~.GAOLe’1.CruangdongProvincialKeyLabofGeologicalProcessesandMineralResourceSurvey,Guangzhou510275,China;2.SchoolandEarthScienceandGeologicalEngin
5、eering,CenterforEarthEnvironment&Resources。SunYat—senUniversity,Guangzhou510275,China;3.GuangzhouInstituteofGeochemistry,ChineseAcademyofSciences,Cmangzhou510640。ChinaAbstract:Tangpeng—ChangshanstudyareaislocatedintheQin-Hangmetallogenicbelt,Lianjiangci
6、ty.1:50,000streamsedimentsurveyand1:50000highprecisionmagneticfieldmeasurementwerecarriedouttoestimatetheore—prospectingpotentialoftheTangpeng—Changshanarea.ThestudydefinedthreecomprehensiveanomalyareasofYC1,YC2,andY,andanomalyareasoflowtemperatureeleme
7、nts(Au,Ag,Pb,Zn)andhightemperatureelements(Cu,Bi,W,Sn),whichareofwiderange,highstrength,andobviouslycontrolledbyfaults.1:50,000highprecisionmagneticfieldshowsNE-trend,andcouldbedividedintoanorthernpositivebackgroundarea(inten—sitygenerally0-100nT)andaso
8、uthernlowandnegativebackgroundarea(intensitygenerally—l10to一50nT).Bothsidesofthequartzveininthestudyareaexistwallrockalterationsofmainlysericitizationandpyritization.Therefore,thisstudysuggeststhatthequartzveintypegold(silver)and