基于Markov链的金川铜镍矿床超基性岩体侵位过程模拟及找矿启示
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- 英文论文题名：Simulation of Jinchuan Cu-Ni sulfide deposit ultrabasic pluton emplacement with Markov model and its implication for prospecting
- 论文作者：邓浩 ; 刘晓霞 ; 赵莹 ; 张苗苗 ; 毛先成
- 英文论文作者：DENG Hao ; LIU Xiao-xia ; ZHAO Ying ; ZHANG Miao-miao ; MAO Xian-cheng ; Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring ; Mini stry of Education ; Central South University ; School of Geosciences and Info-Physics ; Central South University
- 年：2016
- 作者机构：中南大学有色金属成矿预测与地质环境监测教育部重点实验室;中南大学地球科学与信息物理学院;
- 论文关键词：金川 ; 铜镍硫化物矿床 ; 岩浆通道 ; Markov链 ; 岩体侵位
- 英文论文关键词：Jinchuan ; Cu-Ni sulfide deposit ; magma conduit ; Markov chain ; pluton emplacement
- 会议召开时间：2016-10-21
- 会议录名称：第十五届全国数学地质与地学信息学术研讨会论文集
- 英文会议录名称：Proceedings of the 15th National Workshop on Mathematical Geosciences and Geoinformatics
- 语种：中文
- 分类号：P618.41;P618.63
- 学会代码：ZSYD
- 会议名称：第十五届全国数学地质与地学信息学术研讨会
- 会议地点：中国湖南长沙
- 主办单位：中国地质学会数学地质与地学信息专业委员会、中南大学、湖南省国土资源厅、湖南省地质学会
- 学会名称：中国地质学会数学地质与地学信息专业委员会
- 页数：12
- 文件大小：2002k
- 原文格式：D
- 会议级别：全国
摘要
金川铜镍矿床是世界第三大镍铜硫化物岩浆矿床,现有研究表明其成矿模式为岩浆通道成矿,但是对于金川超基性岩体的侵位过程存在较大争议。为探索岩体的侵位过程,本文将岩浆侵位描述为Markov过程,提出一种基于Markov链的岩体侵位模拟算法,实现对金川超基性岩体侵位过程的模拟。以金川Ⅱ矿区为例,探寻了侵位过程与矿化的关联及岩浆通道骨架,为在矿床深部寻找第二成矿空间提供了方向和线索。
The Jinchuan Cu-Ni deposit is the third largest Cu-Ni sulfide magmatic deposit in the world. Recent researches show that the formation of the Jinchuan deposit is due to the magma conduit sytem. However, there is a great controversy over the procedure of the ultrabasic pluton emplacement. In order to explore the emplacement process of the pluton mass, this paper proposes a method for simulation of the magma flow trajectory by regarding the magma flowing as Markov process, which thus simulates the emplacement process of the ultrabasic pluton in Jinchuan deposit. A case study conducted in sector II of Jinchuan deposit shows the skeleton of magma conduit as well as the correlation between magma conduit skeleton and magma flow. Evidence for discovering new metallogenic space in deep areas is also gained according to the extending direction of the magma conduit skeleton.
The Jinchuan Cu-Ni deposit is the third largest Cu-Ni sulfide magmatic deposit in the world. Recent researches show that the formation of the Jinchuan deposit is due to the magma conduit sytem. However, there is a great controversy over the procedure of the ultrabasic pluton emplacement. In order to explore the emplacement process of the pluton mass, this paper proposes a method for simulation of the magma flow trajectory by regarding the magma flowing as Markov process, which thus simulates the emplacement process of the ultrabasic pluton in Jinchuan deposit. A case study conducted in sector II of Jinchuan deposit shows the skeleton of magma conduit as well as the correlation between magma conduit skeleton and magma flow. Evidence for discovering new metallogenic space in deep areas is also gained according to the extending direction of the magma conduit skeleton.
引文
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[15]闫海卿,苏尚国,焦建刚,等.2005.金川Cu、Ni(PGE)岩浆硫化物矿床成矿时代研究[J].地学前缘,12(2):309-315.
[16]闫海卿,王强,胡彦强,等.2013.金川铜镍硫化物岩浆矿床前锋岩浆与岩浆通道[J].中国地质,40(3):807-819.
[17]曾南石,汪劲草,罗先熔,等.2013.金川地区构造序列及与铜镍硫化物矿床的关系[J].地学前缘,20(6).
[18]曾认宇.2014.金川铜镍硫化物矿床岩浆通道系统及岩浆演化研究[D].中南大学.
[19]曾认宇,赖健清,毛先成,等.2013a.金川铜镍矿床中断裂系统的形成演化及对矿体的控制[J].中国有色金属学报,23(9):2574-2583.
[20]曾认宇,赖健清,毛先成.2013b.金川铜镍硫化物矿床岩浆通道系统的成矿模式[J].矿产与地质,27(4):276-282.
[21]曾认宇,赖健清,毛先成,等.2015.金川铜镍硫化物矿床两个主要矿体的母岩浆在岩浆演化过程中的关系[J].中国有色金属学报,25(3).
[22]曾认宇,赖健清,毛先成,等.2016.金川铜镍硫化物矿床铂族元素地球化学差异及其演化意义[J].中国有色金属学报,(1).
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[26]Chen L M,Song XY,Keays RR and Tian YL.2013.Segregation and fractionation of magmatic Ni-Cu-PGE sulfides in the western Jinchuan intrusion,northwestern China:Insights from platinum group element geochemistry[J].Economic Geology,108(8):1793-1811.
[27]Li C,Naldrett AJ.1999.Geology and petrology of the Voisey‘s Bay intrusion:reaction of olivine with sulphide and silicate liquids[J].Lithos,47:1-31.
[28]Li C,Ripley EM,Naldrett AJ.2003.Compositional variations of olivine and sulfur isotopes in the Noril‘sk and Talnakh intrusions,Siberia:implications for ore-forming processes in dynamic magma conduits[J].Econ Geol,98:69-86.
[29]Lightfoot P C,Keays R R.2005.Siderophile and chalcophile metal variations in flood basalts from the Siberian trap,Noril‘sk region:Implications for the origin of the Ni-Cu-PGE sulfide ores[J].Economic Geology,100(3):439-462.
[30]Lightfoot PC,Naldrett AJ.1999.Geological and geochemical relationships in the Voisey‘s Bay Intrusion,Nain Plutonic Suite,Labrador,Canada[M].In:Keays RR,Lesher CM,Lightfoot PC,Farrow CEG(eds)Dynamic processes in magmatic ore deposits and their application in mineral exploration,Geological Association of Canada,short course volume 13.Geological Association of Canada,St.John‘s,pp 1-30.
[31]Maier WD,Li C,De Waal SA.2001.Why are there no major Ni–Cu sulphide deposits in layered mafic–ultramafic intrusions?[J].Can Mineral,39:547–556.
[32]Naldrett AJ,Fedorenko VA,Lightfoot PC,Kunilov VE,Gorbachev NS,Doherty W,Johan Z.1995.Ni–Cu–PGE deposits of the Noril‘sk region,Siberia:their formation in conduits for flood basalt volcanism[M].Transactions of the Institute of Mining and Metallurgy,104:B18–B36.
[33]Ripley EM,Lightfoot PC,Li C,Elswick R.2003.Sulfur isotopic studies of continental flood basalts in the Noril‘sk region:Implications for the association between lavas and ore-bearing intrusions[J].Geochim Cosmochim Acta,67:2805–2817
[34]Viterbi A J.1967.Error Bounds for Convolutional Codes and an Asymptotically Optimum Decoding Algorithm[J].IEEE Transactions on Information Theory,13(2):260-269.
[2]高辉,J.Hronsky,曹殿华,等.2009.金川铜镍矿床成矿模式、控矿因素分析与找矿[J].地质与勘探,45(3):218-228.
[3]高亚林,汤中立,宋谢炎,等.2009.金川铜镍矿床隐伏富铜矿体成因研究及其深部找矿意义[J].岩石学报,25(12):3379-3395.
[4]李文渊.2006.祁连山岩浆作用有关硫化金属矿床成矿与找矿[M].北京:地质出版社.
[5]罗伯特.2009.蒙特卡罗统计方法(第2版)[M].世界图书出版公司.
[6]施俊法,唐金荣,周平,等.2010.世界找矿模型与矿产勘查[M].北京:地质出版社.
[7]宋谢炎,李世彬,王玉山,等.2005.含矿岩浆通道对于岩浆铜镍硫化物矿床找矿工作的意义[J].矿物岩石地球化学通报,24(4):293-298.
[8]宋谢炎,肖家飞,朱丹,等.2010.岩浆通道系统与岩浆硫化物成矿研究新进展[J].地学前缘,17(1):153-163.
[9]苏尚国,汤中立,罗照华,等.2014.岩浆通道成矿系统[J].岩石学报,30(11):3120-3130.
[10]苏尚国,汤中立,周岱.2010.金川含矿超镁铁岩侵入体侵位序列[J].地学前缘,17(2):118-126.
[11]汤中立,李文渊.1995.金川铜镍硫化物(含铂)矿床成矿模式及地质对比[M].北京:地质出版社.
[12]田毓龙,包国忠,汤中立,等.2009.金川铜镍硫化物矿床岩浆通道型矿体地质地球化学特征[J].地质学报,83(10):1515-1525.
[13]田毓龙,武栓军,孟蓉,等.2007.金川超镁铁质岩体LA-ICPMS锆石U-Pb年龄[J].矿物学报,27(2):211-217.
[14]王亮,陈列锰,宋谢炎,等.2014.金川铜镍硫化物矿床2号矿体铂族及亲铜元素地球化学特征[J].矿床地质,33(4):727-741.
[15]闫海卿,苏尚国,焦建刚,等.2005.金川Cu、Ni(PGE)岩浆硫化物矿床成矿时代研究[J].地学前缘,12(2):309-315.
[16]闫海卿,王强,胡彦强,等.2013.金川铜镍硫化物岩浆矿床前锋岩浆与岩浆通道[J].中国地质,40(3):807-819.
[17]曾南石,汪劲草,罗先熔,等.2013.金川地区构造序列及与铜镍硫化物矿床的关系[J].地学前缘,20(6).
[18]曾认宇.2014.金川铜镍硫化物矿床岩浆通道系统及岩浆演化研究[D].中南大学.
[19]曾认宇,赖健清,毛先成,等.2013a.金川铜镍矿床中断裂系统的形成演化及对矿体的控制[J].中国有色金属学报,23(9):2574-2583.
[20]曾认宇,赖健清,毛先成.2013b.金川铜镍硫化物矿床岩浆通道系统的成矿模式[J].矿产与地质,27(4):276-282.
[21]曾认宇,赖健清,毛先成,等.2015.金川铜镍硫化物矿床两个主要矿体的母岩浆在岩浆演化过程中的关系[J].中国有色金属学报,25(3).
[22]曾认宇,赖健清,毛先成,等.2016.金川铜镍硫化物矿床铂族元素地球化学差异及其演化意义[J].中国有色金属学报,(1).
[23]Arndt NT,Lesher CM,Czamanske GK.2005.Mantle-derived magmas and magmatic Ni–Cu–(PGE)deposits[J].Econ Geol,100:5–24
[24]Barnes S-J,Lightfoot PC.2005.Formation of magmatic nickel sulfide ore deposits and processes affecting their copper and platinum group element contents[J].Econ Geol 100:179–213.
[25]Chai G,Naldrett A J.1992.Characteristics of Ni-Cu-PGE mineralization and genesis of the Jinchuan Deposit,Northwest China[J].Econ Geol.Bull.Soc.,87(6):1475-1495.
[26]Chen L M,Song XY,Keays RR and Tian YL.2013.Segregation and fractionation of magmatic Ni-Cu-PGE sulfides in the western Jinchuan intrusion,northwestern China:Insights from platinum group element geochemistry[J].Economic Geology,108(8):1793-1811.
[27]Li C,Naldrett AJ.1999.Geology and petrology of the Voisey‘s Bay intrusion:reaction of olivine with sulphide and silicate liquids[J].Lithos,47:1-31.
[28]Li C,Ripley EM,Naldrett AJ.2003.Compositional variations of olivine and sulfur isotopes in the Noril‘sk and Talnakh intrusions,Siberia:implications for ore-forming processes in dynamic magma conduits[J].Econ Geol,98:69-86.
[29]Lightfoot P C,Keays R R.2005.Siderophile and chalcophile metal variations in flood basalts from the Siberian trap,Noril‘sk region:Implications for the origin of the Ni-Cu-PGE sulfide ores[J].Economic Geology,100(3):439-462.
[30]Lightfoot PC,Naldrett AJ.1999.Geological and geochemical relationships in the Voisey‘s Bay Intrusion,Nain Plutonic Suite,Labrador,Canada[M].In:Keays RR,Lesher CM,Lightfoot PC,Farrow CEG(eds)Dynamic processes in magmatic ore deposits and their application in mineral exploration,Geological Association of Canada,short course volume 13.Geological Association of Canada,St.John‘s,pp 1-30.
[31]Maier WD,Li C,De Waal SA.2001.Why are there no major Ni–Cu sulphide deposits in layered mafic–ultramafic intrusions?[J].Can Mineral,39:547–556.
[32]Naldrett AJ,Fedorenko VA,Lightfoot PC,Kunilov VE,Gorbachev NS,Doherty W,Johan Z.1995.Ni–Cu–PGE deposits of the Noril‘sk region,Siberia:their formation in conduits for flood basalt volcanism[M].Transactions of the Institute of Mining and Metallurgy,104:B18–B36.
[33]Ripley EM,Lightfoot PC,Li C,Elswick R.2003.Sulfur isotopic studies of continental flood basalts in the Noril‘sk region:Implications for the association between lavas and ore-bearing intrusions[J].Geochim Cosmochim Acta,67:2805–2817
[34]Viterbi A J.1967.Error Bounds for Convolutional Codes and an Asymptotically Optimum Decoding Algorithm[J].IEEE Transactions on Information Theory,13(2):260-269.
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