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《江西九江地區(qū)丁家山礦區(qū)深部和外圍地球化學(xué)找礦與成礦預(yù)測(cè).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、第30卷第8期地質(zhì)通報(bào)Vo1.30.NO.82011年8月GEoL0GICALBULUTINoFCHINAAug.,2011江西九江地區(qū)丁家山礦區(qū)深部和外圍地球化學(xué)找礦與成礦預(yù)測(cè)嚴(yán)如忠,龔敏1'2,袁承先,任利民2,閉向陽(yáng)。,曾鍵年,馬振東YANRu—Zhong,GONGMin,YUANCheng—xian,KENLi—min,BIXiang—yang2,ZENGJian—nian,MAZhen—dong~1.江西省地礦資源勘查開(kāi)發(fā)中心,江西南昌330030;2.中國(guó)地質(zhì)大學(xué),湖北武漢4300741。Geologyand~ineredResourceExplorat
2、ionandDevelopmentCenterofJiancxiProvince,Nanchang330030,J/oagxi,China;2.ChinaUniversityofGeosciences,Wuhan430074,Hubei,China摘要:通過(guò)對(duì)丁家山礦區(qū)外圍土壤剖面、土壤汞氣和巖石剖面的測(cè)量,結(jié)合重新編制的丁家山礦區(qū)的地質(zhì)地球化學(xué)找礦模型,對(duì)丁家山礦區(qū)深部和外圍進(jìn)行成礦預(yù)測(cè)。結(jié)果表明,丁家山礦區(qū)外圍土壤中Hg、Ag、Au等元素異常和土壤壤中汞氣、熱釋汞異常明顯。異常與下伏侵入的燕山期巖脈密切相關(guān),花崗閃長(zhǎng)斑巖、石英閃長(zhǎng)玢巖侵入及其成礦(礦化)作用是元
3、素成暈的主導(dǎo)機(jī)制。將丁家山礦區(qū)與城門(mén)山礦區(qū)對(duì)比.認(rèn)為丁家山礦區(qū)及其外圍具有較好的成礦前景,應(yīng)注意在丁家山礦區(qū)外圍志留系砂巖中尋找銀金礦化,在其深部(一50[卜一1000m)尋找以鉬(銅)礦化為主的礦體。關(guān)鍵詞:江西;丁家山礦區(qū);深部和外圍;地球化學(xué)找礦中圖分類(lèi)號(hào):P61B.5;P618.65;P612文獻(xiàn)標(biāo)志碼:A文章編號(hào):1671—2552(2011)08-1312—09YanRZ,GongM,YuanCX,RenLM,BiXY,ZengJN,MaZD.Geochemicalexplorationandmetallogenicpredictioninthedept
4、handoutskirtsoftheDingjiashanoredistrict,Jiujiangarea,JiangxiProvince.GeologicalBulletinofChina,2011,30(8):1312-1320Abstract:Throughthemeasurementofsoilprofile,soilmercurygasandrockprofileintheoutskirtsoftheDingjiashanoredistrictandthere—establishmentofthegeologicalandgeochemicalexplor
5、ationmodel,theauthorsmadethemetallogenicpredictioninthedepthandoutskirtsoftheoredistrict.TheresultsshowthatthereexistobviousHg,Ag,Ausoilanomaliesandsoilmercurygasanomaliesaswellasheat—releasedmercuryanomalies,whichareevidentlyincloserelationtOtheYanshanianintrusivedykes,intm-sionsandmi
6、neralizationofgranodioriteporphyry,withquartzdioriteporphyrybeingthedominantmechanismoftheanomalies.AcomparisonwiththeChengmenshanoredistrictshowsthatthereexistgoodmetallogenicprospectsinthedepthandoutskirtsoftheDingjiashanoredistrict.Itshouldbenotedthatsilver—goldmineralizationinSilur
7、iansandstoneislikelytobefoundattheperipheryoftheDingfiashanoredistrictwhereasmolybdenum(copper)mineralizationmightbefoundinthedepth(一500tO一1000n1).Keywords:Jiangxi;Dingjiashanoredistrict;depthandperiphery;geochemicalexploration近年來(lái),隨著中國(guó)礦產(chǎn)資源供應(yīng)的日益短缺,果,老礦區(qū)深部、外圍找礦已成為當(dāng)前成礦學(xué)和成礦尋找新的資源成為國(guó)家的戰(zhàn)略目