川滇黔地区典型铅锌矿床成矿物质来源分析:来自S-Pb同位素证据
详细信息    查看全文 | 推荐本文 |
  • 英文篇名:Sources of ore-forming material of typical Pb-Zn deposits in the Sichuan-Yunnan-Guizhou metallogenic province:constraints from the S-Pb isotopic compositions
  • 作者:孔志岗 ; 吴越 ; 张锋 ; 张长青 ; 孟旭阳
  • 英文作者:KONG Zhigang;WU Yue;ZHANG Feng;ZHANG Changqing;MENG Xuyang;School of Earth Science and Resources,Chang’an University;Faculty of Land Resource Engineering,Kunming University of Science and Technology;College of Resources and Environment,Yangtze University;School of Earth Sciences and Resources,China University of Geosciences(Beijing);MLR Key Laboratory of Metallogeny and Mineral Assesment,Institute of Mineral Resources,Chinese Academy of Geological Sciences;
  • 关键词:川滇黔 ; 铅锌矿 ; 成矿物质来源 ; S同位素 ; Pb同位素
  • 英文关键词:Sichuan-Yunnan-Guizhou;;Pb-Zn deposit;;ore-forming material;;S isotopic composition;;Pb isotopic composition
  • 中文刊名:DXQY
  • 英文刊名:Earth Science Frontiers
  • 机构:长安大学地球科学与资源学院;昆明理工大学国土资源工程学院;长江大学资源与环境学院;中国地质大学(北京)地球科学与资源学院;中国地质科学院矿产资源研究所国土资源部成矿作用与资源评价重点实验室;
  • 出版日期:2017-10-30 16:35
  • 出版单位:地学前缘
  • 年:2018
  • 期:v.25;No.129
  • 基金:国家重点基础研究发展计划“973”项目(2014CB440903);; 国家重点研发计划项目(2017YFC0602502);; 国家自然科学基金项目(41402063,41672093);; 长江大学青年人才基金项目(2015cqr15)
  • 语种:中文;
  • 页:DXQY201801011
  • 页数:13
  • CN:01
  • ISSN:11-3370/P
  • 分类号:129-141
摘要
川滇黔铅锌矿集区位于扬子地块西南缘,发育有400多个矿床(点),铅锌矿石储量超2亿t,Pb平均品位(质量分数)达5%,Zn平均品位达10%。矿体主要呈似层状、脉状赋存于震旦系—二叠系碳酸盐岩地层中,为碳酸盐岩容矿后生铅锌矿床。文中通过综合分析川滇黔矿集区21个典型矿床的S-Pb多元同位素数据,示踪成矿元素主要来源,并为进一步找矿提供指导。研究区大部分铅锌矿床硫化物的δ34S值介于9.0‰~28.6‰之间,与震旦系—二叠系地层中海水硫酸盐δ34S值(+8.0‰到+38.7‰)相似,暗示研究区铅锌矿床硫化物中的S主要来源于赋矿地层中海水硫酸盐,TSR作用是还原硫的主要生成机制。部分矿床中,含硫有机质热解可能是还原硫的另外一种生成机制。该区硫化物Pb同位素组成显示4种不同的成矿物质来源模式:(1)唐家等矿床Pb主要来源于基底岩石;(2)金沙厂、乐马厂、乐红等矿床Pb主要来源于基底富放射性成因Pb的岩层及盖层沉积岩中富有机质地层;(3)会泽、天宝山、茂租、银厂沟、大梁子、云炉河、毛坪、富乐、杉树林、天桥等矿床Pb主要来源于基底岩石和沉积盖层中多源流体的混合,峨眉山玄武岩可能提供少量成矿物质;(4)青山、赤普、银厂坡、筲箕湾、板板桥等矿床Pb主要来源于沉积盖层,基底岩石提供了部分成矿物质。典型矿床的S-Pb同位素组成特征表明成矿物质具有混合来源的特征。
        The Sichuan-Yunan-Guizhou(Chuan-Dian-Qian)Pb-Zn metallogenic province,located along the western margin of the Yangtze block,comprises more than 400 ore deposits or prospects.The average Pb and Zn grades of its 200 Mt ore reserve are 5 and 10 wt%,respectively.The Pb-Zn ore bodies mainly distributed as stratoid or vein-type within the Sinian to Permian carbonate rocks,suggesting a typical epigenetic Pb-Zn mineralization.In this study,isotope data of S and Pb sulfides from 21 deposits were compiled to reveal the source of ore-forming materials,and provide guidance for further prospecting.Theδ34 S values of most sulfide minerals range from +9.0‰ to +28.6‰,similar to the Sinian-to-Permian seawater sulfate(+8.0‰ to+38.7‰).It suggests that S in sulfides mainly came from thermochemical sulfate reduction(TSR)of the host-strata seawater sulfate.In addition,thermal decomposition of sulfur-bearing organic matter could provide part of reduced sulfur in mineralization in some Pb-Zn deposits.The Pb isotopic compositions of sulfides in the research area indicate four possible Pb sources:(1)Pb of the Tangjia deposit originated mainly from the basement rocks;(2)Pb in the Jinshachang,Lemachang and Lehong deposits mainly came from basement rocks containing radiogenic Pb isotopes and cap rock organic-rich sediments;(3)Pb of the Huize,Tianbaoshan,Maozu,Yinchanggou,Daliangzi,Yunluhe,Maoping,Fule,Shanshulin and Tianqiao deposits originated primarily from basement rocks and ore-forming fluid of multiple metal-bearing brine mixing in the cap stratum,and partly from Permian Emeishan basalt;(4)Pb of the Qingshan,Chipu,Yinchangpo,Shaojiwan and Banbanqiao deposits mainly came from sedimentary rocks,and partly from basement rocks.Themultiple S-Pb isotope composition in typical Pb-Zn deposits is indicative of mixed origin for ore-forming materials in the metallogenic province.
引文
[1]柳贺昌,林文达.滇东北铅锌银矿床规律研究[M].昆明:云南大学出版社,1999.
    [2]ZHOU J X,HUANG Z L,ZHOU M F,et al.Constraints of C-O-S-Pb isotope compositions and Rb-Sr isotopic age on the origin of the Tianqiao carbonate-hosted Pb-Zn deposit,SWChina[J].Ore Geology Reviews,2013,53(8):77-92.
    [3]ZHANG C Q,WU Y,HOU L,et al.Geodynamic setting of mineralization of Mississippi Valley-type deposits in worldclass Sichuan-Yunnan-Guizhou Zn-Pb triangle,southwest China:implications from age-dating studies in the past decade and the Sm-Nd age of Jinshachang deposit[J].Journal of Asian Earth Sciences,2015,103:103-114.
    [4]张志斌,李朝阳,涂光炽,等.川、滇、黔接壤地区铅锌矿床产出的大地构造演化背景及成矿作用[J].大地构造与成矿学,2006,30(3):343-354.
    [5]张长青.中国川滇黔交界地区密西西比型(MVT)铅锌矿床成矿模型[D].北京:中国地质科学院,2008.
    [6]吴越.川滇黔地区MVT铅锌矿床大规模成矿作用的时代与机制[D].北京:中国地质大学(北京),2013.
    [7]ZHOU J X,BAI J H,HUANG Z L,et al.Geology,isotope geochemistry and geochronology of the Jinshachang carbonate-hosted Pb-Zn deposit,Southwest China[J].Journal of Asian Earth Sciences,2015,98(1):272-284.
    [8]韩润生,胡煜昭,王学琨,等.滇东北富锗银铅锌多金属矿集区矿床模型[J].地质学报,2012,86(2):280-294.
    [9]HAN R S,LIU C Q,HUANG Z L,et al.Geological features and origin of the Huize carbonate-hosted Zn-Pb-(Ag)District,Yunnan,South China[J].Ore Geology Reviews,2007,31(1):360-383.
    [10]ZHOU J X,GAO J G,CHEN D,et al.Ore genesis of the Tianbaoshan carbonate-hosted Pb-Zn deposit,Southwest China:geologic and isotopic(C-H-O-S-Pb)evidence[J].International Geology Review,2013,55(10):1300-1310.
    [11]胡耀国.贵州银厂坡银多金属矿床银的赋存状态、成矿物质来源与成矿机制[D].贵阳:中国科学院地球化学研究所,1999.
    [12]邓海琳,李朝阳,涂光炽,等.滇东北乐马厂独立银矿床Sr同位素地球化学[J].中国科学:地球科学,1999,29(6):496-503.
    [13]ZHOU C X,WEI C S,GUO J Y,et al.The source of metals in the Qilinchang Zn-Pb Deposit,Northeastern Yunnan,China:Pb-Sr isotope constraints[J].Economic Geology,2001,96(3):583-598.
    [14]黄智龙,李文博,张振亮,等.云南会泽超大型铅锌矿床成因研究中的几个问题[J].矿物学报,2004,24(2):105-111.
    [15]涂首业.四川会理天宝山铅锌矿矿相学特征及意义[D].成都:成都理工大学,2014.
    [16]李文博,黄智龙,张冠.云南会泽铅锌矿田成矿物质来源:Pb、S、C、H、O、Sr同位素制约[J].岩石学报,2006,22(10):2567-2580.
    [17]张长青,毛景文,余金杰,等.四川甘洛赤普铅锌矿床流体包裹体特征及成矿机制初步探讨[J].岩石学报,2007,23(10):2541-2552.
    [18]HU R Z,ZHOU M F.Multiple Mesozoic mineralization events in South China:an introduction to the thematic issue[J].Mineralium Deposita,2012,47(6):579-588.
    [19]WANG C M,BAGAS L,LU Y J,et al.Terrane boundary and spatio-temporal distribution of ore deposits in the Sanjiang Tethyan Orogen:insights from zircon Hf-isotopic mapping[J].Earth-Science Reviews,2016,156:39-65.
    [20]QIU L,YAN D P,TANG S L,et al.Mesozoic geology of southwestern China:Indosinian foreland overthrusting and subsequent deformation[J].Journal of Asian Earth Sciences,2016,122:91-105.
    [21]LO C H,CHUNG S L,LEE T Y,et al.Age of the Emeishan flood magmatism and relations to Permian-Triassic boundary events[J].Earth and Planetary Science Letters,2002,198(3/4):449-458.
    [22]付绍洪.扬子地块西南缘铅锌成矿作用与分散元素镉镓锗富集规律[D].成都:成都理工大学,2004.
    [23]ZHOU J X,HUANG Z L,BAO G P.Geological and sulfurlead-strontium isotopic studies of the Shaojiwan Pb-Zn deposit,Southwest China:implications for the origin of hydrothermal fluids[J].Journal of Geochemical Exploration,2013,128(2):51-61.
    [24]林方成.康滇地轴东缘铅锌矿床铅同位素组成特征及其成因意义[J].特提斯地质,1995(19):131-137.
    [25]司荣军.云南省富乐分散元素多金属矿床地球化学研究[M].武汉:中国地质大学出版社,2014.
    [26]白俊豪.滇东北金沙厂铅锌矿床地球化学及成因[D].北京:中国科学院大学,2013.
    [27]LI W B,HUANG Z L,YIN M D.Isotope geochemistry of the Huize Zn-Pb ore field,Yunnan Province,Southwestern China:implication for the sources of ore fluid and metals[J].Geochemical Journal,2007,41(1):65-81.
    [28]ZHOU J X,HUANG Z L,YAN Z F.The origin of the Maozu carbonate-hosted Pb-Zn deposit,southwest China:constrained by C-O-S-Pb isotopic compositions and Sm-Nd isotopic age[J].Journal of Asian Earth Sciences,2013,73(1):39-47.
    [29]王超伟,李元,罗海燕,等.云南毛坪铅锌矿床的成因探讨[J].昆明理工大学学报(自然科学版),2009,34(1):7-11.
    [30]张云新,吴越,田广,等.云南乐红铅锌矿床成矿时代与成矿物质来源:Rb-Sr和S同位素制约[J].矿物学报,2014,34(3):305-311.
    [31]袁波,毛景文,闫兴虎,等.四川大梁子铅锌矿成矿物质来源与成矿机制:硫、碳、氢、氧、锶同位素及闪锌矿微量元素制约[J].岩石学报,2014,30(1):209-220.
    [32]李发源.MVT铅锌矿床中分散元素赋存状态和富集机理研究:以四川天宝山、大梁子铅锌矿床为例[D].成都:成都理工大学,2003.
    [33]朱赖民,袁海华.四川底苏、大梁子铅锌矿床同位素地球化学特征及成矿物质来源探讨[J].矿物岩石,1995(1):72-79.
    [34]ZHU C W,WEN H J,ZHANG Y X,et al.Cadmium and sulfur isotopic compositions of the Tianbaoshan Zn-Pb-Cd deposit,Sichuan Province,China[J].Ore Geology Reviews,2016,76:152-162.
    [35]何承真,肖朝益,温汉捷,等.四川天宝山铅锌矿床的锌-硫同位素组成及成矿物质来源[J].岩石学报,2016,32(11):3394-3406.
    [36]林孝先.四川汉源地区震旦系灯影组白云岩及其中铅锌矿成矿规律研究[D].成都:成都理工大学,2014.
    [37]李伟.四川省宁南县银厂沟-骑骡沟铅锌矿地球化学特征及矿床成因初探[D].成都:成都理工大学,2011.
    [38]ZHOU J X,HUANG Z L,LV Z C,et al.Geology,isotope geochemistry and ore genesis of the Shanshulin carbonatehosted Pb-Zn deposit,Southwest China[J].Ore Geology Reviews,2014,63(1):209-225.
    [39]张海,孟昌忠,齐有强,等.黔西北云炉河坝铅锌矿集区成矿物质来源:S、Pb同位素制约[J].矿物学报,2016,36(2):271-276.
    [40]金翔霖,孟昌忠,冷成彪,等.贵州云炉河坝地区铅锌矿床元素地球化学特征、碳氧同位素组成及其地质意义[J].地球科学与环境学报,2016,38(6):778-790.
    [41]ZHOU J X,HUANG Z L,GAO J G,et al.Geological and C-O-S-Pb-Sr isotopic constraints on the origin of the Qingshan carbonate-hosted Pb-Zn deposit,Southwest China[J].International Geology Review,2013,55(7):904-916.
    [42]LI B,ZHOU J X,HUANG Z L,et al.Geological,rare earth elemental and isotopic constraints on the origin of the Banbanqiao Zn-Pb deposit,Southwest China[J].Journal of Asian Earth Sciences,2015,111:100-112.
    [43]朱路艳,苏文超,沈能平,等.黔西北地区铅锌矿床流体包裹体与硫同位素地球化学研究[J].岩石学报,2016,32(11):3431-3440.
    [44]陈兴,薛春纪.西天山乌拉根大规模铅锌成矿中H2S成因:菌生结构和硫同位素组成约束[J].岩石学报,2016,32(5):1301-1314.
    [45]WU Y,ZHANG C Q,MAO J W,et al.The genetic relationship between hydrocarbon systems and Mississippi Valley-type Zn-Pb deposits along the SW margin of Sichuan Basin,China[J].International Geology Review,2013,55(8):941-957.
    [46]ELSGAARD L,MAI F I,BO B J,et al.Microbial sulfate reduction in deep-sea sediments at the Guaymas Basin hydrothermal vent area:influence of temperature and substrates[J].Geochimica et Cosmochimica Acta,1994,16(58):3335-3343.
    [47]MACHEL H G,KROUSE H R,SASSEN R.Products and distinguishing criteria of bacterial and thermochemical sulfate reduction[J].Applied Geochemistry,1995,10(4):373-389.
    [48]MACHEL H G.Bacterial and thermochemical sulfate reduction in diagenetic settings-old and new insights[J].Sedimentary Geology,2001,140(1/2):143-175.
    [49]YUAN S D,CHOU I M,BURRUSS R C.Disproportionation and thermochemical sulfate reduction reactions in S-H2O-CH4and S-D2O-CH4systems from 200to 340℃at elevated pressures[J].Geochimica et Cosmochimica Acta,2013,118:263-275.
    [50]CHANG Z S,LARGE R R,MASLENNIKOV V.Sulfur isotopes in sediment-hosted orogenic gold deposits:evidence for an early timing and a seawater sulfur source[J].Geology,2008,36(12):971-974.
    [51]CLAYPOOL G E,HOLSER W T,KAPLAN I R,et al.The age curves of sulfur and oxygen isotopes in marine sulfate and their mutual interpretation[J].Chemical Geology,1980,28:199-260.
    [52]张同钢,储雪蕾,张启锐,等.扬子地台灯影组碳酸盐岩中的硫和碳同位素记录[J].岩石学报,2004,20(3):717-724.
    [53]SHIELDS G A,STRAUSS H,HOWE S S,et al.Sulphur isotope compositions of sedimentary phosphorites from the basal Cambrian of China:implications for NeoproterozoicCambrian biogeochemical cycling[J].Journal of the Geological Society,1999,156(5):943-955.
    [54]OHMOTO H.Systematics of sulfur and carbon isotopes in hydrothermal ore deposits[J].Economic Geology,1972,67(5):551-578.
    [55]吴越,张长青,毛景文,等.油气有机质与MVT铅锌矿床的成矿:以四川赤普铅锌矿为例[J].地球学报,2013(4):425-436.
    [56]POTRA A,MOYERS A.Constraints on the sources of ore metals in Mississippi Valley-type deposits in central and east Tennessee,USA,using Pb isotopes[J].Ore Geology Reviews,2017,81:201-210.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700