摘要
安徽贵池地区是长江中下游成矿带的重要组成部分,区内金、银、铜、钼、硫等矿产资源丰富。系统研究了贵池地区地质、岩浆岩、地球化学-地球物理等特征与金银多金属矿床的成矿关系,对抛刀岭金矿、乌石金及多金属矿、朱家冲金矿、铜山铜矿等多金属矿进行详细分析,总结各岩体的地球化学属性,并对贵池地区斑岩型矿床进行了重点研究,分析其成矿专属性。将贵池地区成岩成矿时间划分为两期:第一期是140 Ma左右的岩浆活动及成矿作用,为早白垩世(燕山早期),主要与铜金矿床有关;第二期是125 Ma左右的岩浆活动及成矿作用,主要与钼(铜)矿床(化)有关。这两期岩浆活动及成矿作用包括高钾钙碱性、碱性两个成岩系列,岩石类型以中酸性—酸性花岗闪长岩、花岗岩为主,与长江中下游地区其他矿集区的成矿作用类似。将地质标志、地球物理标志以及地球化学标志结合,建立了该区找矿标志,从而有助于区内金、银(铅锌)及铜钼等金属矿成矿理论的丰富及成矿规律的认识,为区内找矿突破提供科学依据。
Guichi area in Anhui is one of the most important Cu-Au deposits in the Middle-lower Yangtze metallogenic belt,which is rich in gold,silver,copper,molybdenum,sulfur and other mineral resources. The metallogenic relationships among the geology, magmatic rocks,geochemistry-geophysics,other geological features and Au-Ag polymetallic deposits were systematically studied; Paodaoling gold deposit, Wushi gold and polymetallic deposits,Zhujiachong gold deposit,Tongshan Cu-Au deposit were analyzed in detail,and the geochemicalcharacteristics of related magmatic rocks were summarized;furthermore,the porphyry types of deposits and the metallogenic specialization were analyzed particularly.Together with the published chronological data,the diagenetic mineralization in Guichi area can be divided into two phase.One is at~140Ma,the Early Cretaceous(Early Yanshanian),which is related to Cu-Au deposit;another is at~125 Ma,related to Mo(Cu)deposit(mineralization).The two phases include high-potassium calc-alkaline and alkaline series, mainly as intermediate acid-acid granodiorite and granite,similar to other ore clusters in the Middle-lower Yangtze metallogenic belt.Combined with geological,geophysical and geochemical information,the prospecting characteristics of ore exploration are established. Moreover,it is helpful to deepen the metallogenic theory of metals such as Au,Ag(Pb-Zn)and Cu-Mo,and the metallogenic regularities,providing a scientific basis for ore prospecting breakthrough in Guichi area.
引文
[1]段留安,古黄玲,杨晓勇,等.长江中下游贵池李湾铜多金属矿区岩浆岩年代学及Hf同位素地球化学研究[J].岩石学报,2015,31(7):1943-1961.DUAN Liu-an,GU Huang-ling,YANG Xiao-yong,et al.Chronology and Hf Isotopic Study of Igneous Rocks in the Liwan Cu-polymetal Deposit in Guichi Along the Middle-lower Yangtze River[J].Acta Petrologica Sinica,2015,31(7):1943-1961.
[2]常印佛,刘湘培,吴言昌.长江中下游铜铁成矿带[M].北京:地质出版社,1991.CHANG Yin-fo,LIU Xiang-pei,WU Yan-chang.The Copper-iron Metallogenic Belt of the Middle-lower Yangtze River[M].Beijing:Geological Publishing House,1991.
[3]唐永成,吴言昌,储国正,等.安徽沿江地区铜金多金属矿床地质[M].北京:地质出版社,1998.TANG Yong-cheng,WU Yan-chang,CHU Guo-zheng,et al.Geology of Copper(Gold)Deposit Along the Yangtze River,Anhui Province[M].Beijing:Geological Publishing House,1998.
[4]李曙光.长江中下游中生代岩浆岩及铜铁成矿带的深部构造背景[J].安徽地质,2001,11(2):118-122.LI Shu-guang.Infrastructure of Mesozoic Magmatic Rocks and Copper-iron Metallogenic Belt in the Middle and Lower Yangtze River Reaches[J].Geology of Anhui,2001,11(2):118-122.
[5]邓晋福,吴宗絮.下扬子克拉通岩石圈减薄事件与长江中下游Cu-Fe成矿带[J].安徽地质,2001,11(2):86-91.DENG Jin-fu,WU Zong-xu.Lithospheric Thinning Event in the Lower Yangtze Craton and Cu-Fe Metallogenic Belt in the Middle and Lower Yangtze River Reaches[J].Geology of Anhui,2001,11(2):86-91.
[6]杜建国,戴圣潜,莫宣学,等.安徽沿江地区燕山期火成岩成岩成矿地质背景[J].地学前缘,2003,10(4):551-560.DU Jian-guo,DAI Sheng-qian,MO Xuan-xue,et al.Petrogenic and Metallogenic Settings of Area Along Yangtze River in Yanshanian,Anhui Province[J].Earth Science Frontiers,2003,10(4):551-560.
[7]安徽省地质矿产勘查局.安徽省区域地质志[M].北京:地质出版社,1987.Bureau of Geology and Mineral Exploration of Anhui Province.The Regional Geology of Anhui Province[M].Beijing:Geological Publishing House,1987.
[8]王钢金.从重磁场特征探讨江南断裂和周王断裂的性质[J].安徽地质,1993,3(1):71-76.WANG Gang-jin.Study on Properties of the Jiangnan and Zhouwang Faults Through Characteristic Analysis of Their Gravity and Magnetic Fields[J].Geology of Anhui,1993,3(1):71-76.
[9]聂张星,李敏,沈欢喜,等.安徽省东至地区金矿类型及找矿方向[J].安徽地质,2013,23(2):81-85.NIE Zhang-xing,LI Min,SHEN Huan-xi,et al.Gold Ore Types and Ore Prospecting Direction in the Dongzhi Area,Anhui Province[J].Geology of Anhui,2013,23(2):81-85.
[10]安徽省地质调查院.1∶50 000殷家汇幅区域地质调查报告[R].合肥:安徽省地质调查院,1979.Geological Survey Institute of Anhui Province.Regional Geology Research Report of Yinjiahui Amplitude with the Scaling as 1∶50 000[R].Hefei:Geological Survey Institute of Anhui Province,1979.
[11]安徽省地质研究所.安徽贵池安子山铜钼矿床普查评价报告[R].合肥:安徽省地质研究所,1991.Anhui Institute of Geology.The Geological Census Evaluation Report of Anzishan Cu-Mo Deposit in Guichi,Anhui Province[R].Hefei:Anhui Institute of Geology,1991.
[12]段留安,杨晓勇,汪方跃,等.长江中下游成矿带贵池抛刀岭金矿含矿岩体年代学及地球化学研究[J].岩石学报,2012,28(10):3241-3254.DUAN Liu-an,YANG Xiao-yong,WANG Fang-yue,et al.Geochemistry and Zircon U-Pb Age of Ore-bearing Porphyry in the Paodaoling Gold Deposit in Guichi,Middle-lower Yangtze Metallogenic Belt[J].Acta Petrologica Sinica,2012,28(10):3241-3254.
[13]周泰禧,陈江峰,李学明.安徽省印支期岩浆活动质疑[J].岩石学报,1988,4(3):46-53.ZHOU Tai-xi,CHEN Jiang-feng,LI Xue-ming.Has the Indo-Sinian Magmatism Occurred in Anhui Province?[J].Acta Petrologica Sinica,1988,4(3):46-53.
[14]CHEN J F,ZHOU T X,FORLAND K A.40 Ar/39 Ar and Rb-Sr Geochronology of the Qingyang Batholith,Anhui Province,China[J].Chinese Journal of Geochemistry,1985,4(3):220-235.
[15]刘园园,马昌前,吕昭英,等.长江中下游贵池矿集区燕山期岩浆作用及其地质意义:年代学、地球化学及Sr-Nd-Hf同位素证据[J].岩石学报,2012,28(10):3287-3305.LIU Yuan-yuan,MA Chang-qian,LU Zhao-ying,et al.Zircon U-Pb Age,Element and Sr-Nd-Hf Isotope Geochemistry of Late Mesozoic Magmatism from the Guichi Metallogenic District in the Middle and Lower Reaches of the Yangtze River Region[J].Acta Petrologica Sinica,2012,28(10):3287-3305.
[16]安徽省地质调查院.1∶50 000马衙桥幅区域地质调查报告[R].合肥:安徽省地质调查院,1989.Geological Survey Institute of Anhui Province.1∶50 000Regional Geological Survey of the Mayaqiao Amplitude[R].Hefei:Geological Survey Institute of Anhui Province,1989.
[17]安徽省地质矿产勘查局.安徽省1∶500 000航磁异常图[R].合肥:安徽省地质矿产勘查局,1989.Bureau of Geology and Mineral Exploration of Anhui Province.1∶500 000Aeromagnetic Anomaly Map of Anhui Province[R].Heifei:Bureau of Geology and Mineral Exploration of Anhui Province,1989.
[18]安徽省地质矿产勘查局.安徽省1∶500 000基岩地质图[R].合肥:安徽省地质矿产勘查局,1986.Bureau of Geology and Mineral Exploration of Anhui Province.1∶500 000 Batholith Geological Map of Anhui Province[R].Hefei:Bureau of Geology and Mineral Exploration of Anhui Province,1986.
[19]谢齐文,邱瑞龙,陈益华,等.安徽省贵池市东部成矿地质条件及铜金银多金属矿产资源预测研究[R].合肥:安徽省地质矿产勘查局,1995.XIE Qi-wen,QIU Rui-long,CHEN Yi-hua,et al.Metallogenic Geological Conditions and Copper-gold Polymetallic Mineral Resources Prediction of Eastern Guichi area,Anhui Province[R].Hefei:Bureau of Geology and Mineral Exploration of Anhui Province,1995.
[20]姚孝德,谭德兴,陈芳.安徽省池州地区区域成矿模式[J].安徽地质,2013,23(3):200-204.YAO Xiao-de,TAN De-xing,CHEN Fang.Regional Metallogenic Models for the Chizhou Area,Anhui Province[J].Geology of Anhui,2013,23(3):200-204.
[21]段留安,杨晓勇,汪方跃.长江中下游成矿带抛刀岭大型斑岩型金矿特征及找矿前景[J].地球科学与环境学报,2014,36(1):161-170.DUAN Liu-an,YANG Xiao-yong,WANG Fang-yue.Characteristics and Prospects of Paodaoling Large Porphyry Gold Deposit in the Middle-lower Yangtze River Metallogenic Belt[J].Journal of Earth Sciences and Environment,2014,36(1):161-170.
[22]余良范,毛丽达·尼合买提,古黄玲,等.安徽铜山铜(金)矿床锆石U-Pb年代学和Hf同位素地球化学[J].地球科学与环境学报,2014,36(1):152-160.YU Liang-fan,NIHEMAITI Maolida,GU Huang-ling,et al.Zircon U-Pb Geochronology and Hf Isotopic Geochemistry of the Tongshan Cu(Au)Deposit in Anhui[J].Journal of Earth Sciences and Environment,2014,36(1):152-160.
[23]张智宇.安徽铜山矽卡岩铜矿床特征与成因[D].北京:中国地质大学,2011.ZHANG Zhi-yu.Characteristic and Genesis of Tongshan Skarn-type Copper Deposit in Anhui Province[D].Beijing:China University of Geosciences,2011.
[24]董胜.安徽省贵池地区区域地球化学特征及找矿意义[J].物探与化探,2006,30(3):215-223.DONG Sheng.Regional Geochemical Characteristics of Guichi Area in Anhui Province and Their Ore-prospecting Significance[J].Geophysical and Geochemical Exploration,2006,30(3):215-223.
[25]聂张星,石磊,古黄玲,等.皖南东至查册桥金矿岩浆岩锆石U-Pb年龄及其成矿意义[J].地质学报,2016,90(6):1146-1166.NIE Zhang-xing,SHI Lei,GU Huang-ling,et al.U-Pb Zircon Geochronology of Magmatic Rocks from the Zhaceqiao Gold Deposit in the Dongzhi Area,South Anhui Province and Its Metallogenic Significance[J].Acta Geologica Sinica,2016,90(6):1146-1166.
[26]王洋洋,肖益林,杨晓勇.长江中下游成矿带铜陵新桥矿床Re-Os同位素及流体包裹体研究[J].岩石学报,2015,31(4):1031-1039.WANG Yang-yang,XIAO Yi-lin,YANG Xiao-yong.Re-Os Isotope Systematics and Fluid Inclusions of Xinqiao Deposit in Tongling,the Middle-lower Yangtze River Metallogenic Belt[J].Acta Petrologica Sinica,2015,31(4):1031-1039.
[27]刘一男,范裕,严四华,等.长江中下游成矿带安庆—贵池矿集区五横岩体的成岩年代和区域岩浆活动演化研究[J].岩石学报,2014,30(4):1117-1129.LIU Yi-nan,FAN Yu,YAN Si-hua,et al.Petrogensis Chronology and Evolution of Regional Magmatic Activity Study of Anqing-Guichi Ore Deposit Concentrated Area in the Middle-lower Reaches of Yangtze River Metallogenic Belt[J].Acta Petrologica Sinica,2014,30(4):1117-1129.
[28]ZHU Z Y,JIANG S Y,HU J,et al.Geochronology,Geochemistry,and Mineralization of the Granodiorite Porphyry Hosting the Matou Cu-Mo(±W)Deposit,Lower Yangtze River Metallogenic Belt,Eastern China[J].Journal of Asian Earth Sciences,2014,79(5):623-640.
[29]ZHANG Z Y,DU Y S,TENG C Y,et al.Petrogenesis,Geochronology,and Tectonic Significance of Granitoids in the Tongshan Intrusion,Anhui Province,Middle-lower Yangtze River Valley,Eastern China[J].Journal of Asian Earth Sciences,2014,79(5):792-809.
[30]PETFORD N,ATHERTON M.Na-rich Partial Melts from Newly Underplated Basaltic Crust:The Cordillera Blanca Batholith,Peru[J].Journal of Petrology,1996,37(6):1491-1521.
[31]WANG Q,WYMAN D A,XU J F,et al.Early Cretaceous Adakitic Granites in the Northern Dabie Complex,Central China:Implications for Partial Melting and Delamination of Thickened Lower Crust[J].Geochimica et Cosmochimica Acta,2007,71(10):2609-2636.
[32]HUANG F,LI S G,DONG F,et al.High-Mg Adakitic Rocks in the Dabie Orogen,Central China:Implications for Foundering Mechanism of Lower Continental Crust[J].Chemical Geology,2008,255(1/2):1-13.
[33]ZHAO J H,ZHOU M F.Neoproterozoic Adakitic Plutons in the Northern Margin of the Yangtze Block,China:Partial Melting of a Thickened Lower Crust and Implications for Secular Crustal Evolution[J].Lithos,2008,104(1/2/3/4):231-248.
[34]DEFANT M J,DRUMMOND M S.Derivation of Some Modern Arc Magmas by Melting of Young Subducted Lithosphere[J].Nature,1990,347:662-665.
[35]STERN C R,KILIAN R.Role of the Subducted Slab,Mantle Wedge and Continental Crust in the Generation of Adakites from the Andean Austral Volcanic Zone[J].Contributions to Mineralogy and Petrology,1996,123(3):263-281.
[36]AGUILLON-ROBLES A,CALMUS T,BENOIT M,et al.Late Miocene Adakites and Nb-enriched Basalts from Vizcaino Peninsula Mexico:Indicators of East Pacific Rise Subduction Below Southern Baja California?[J].Geology,2001,29(6):531-534.
[37]DEFANT M J,许继峰,KEPEZHINSKAS P,等.埃达克岩:关于其成因的一些不同观点[J].岩石学报,2002,18(2):129-142.DEFANT M J,XU Ji-feng,KEPEZHINSKAS P,et al.Adakites:Some Variations on a Theme[J].Acta Petrologica Sinica,2002,18(2):129-142.
[38]THIEBLEMONT D,STEIN G,LESCUYER J L.Epithermal and Porphyry Deposits:The Adakite Connection[J].Comptes Rendus del'Académie des Sciences:SeriesⅡA,Earth and Planetary Science,1997,325(2):103-109.
[39]OYARZUN R,MARQUEZ A,LILLO J.Giant Versus Small Porphyry Copper Deposits of Cenozoic Age in Northern Chile:Adakitic Versus Normal Calc-alkaline Magmatism[J].Mineralium Deposita,2001,36(8):794-798.
[40]BELLON H,YUMUL J G P.Miocene to Quaternary Adakites and Related Rocks in Western Philippine Arc Sequences[J].Comptes Rendus de l'Académie des Sciences:SeriesⅡA,Earth and Planetary Science,2001,333(6):343-350.
[41]张伟波,聂凤军,王立胜,等.印度尼西亚格拉斯贝格铜金矿床研究新进展[J].地质科技情报,2013,32(5):112-117.ZHANG Wei-bo,NIE Feng-jun,WANG Li-sheng,et al.New Research Progresses on the Grasberg Cu-Au Deposits in Papua,Indonesia[J].Geological Science and Technology Information,2013,32(5):112-117.
[42]罗明强.菲律宾斑岩型铜矿成矿背景[J].河南理工大学学报:自然科学版,2011,30(1):47-54.LUO Ming-qiang.Porphyry-type Copper Deposits Geodynamic Setting in Philippines[J].Journal of Henan Polytechnic University:Natural Science,2011,30(1):47-54.
[43]邵陆森,刘振东,吕庆田,等.安徽贵池矿集区深部精细结构:来自综合地球物理探测结果的认识[J].地球物理学报,2015,58(12):4490-4504.SHAO Lu-sen,LIU Zhen-dong,LU Qing-tian,et al.Deep Fine Structure of Guichi Ore Concentrated Area:The Understanding of the Integrated Geophysical Detection Results[J].Chinese Journal of Geophysics,2015,58(12):4490-4504.
[44]毛景文,邵拥军,谢桂青,等.长江中下游成矿带铜陵矿集区铜多金属矿床模型[J].矿床地质,2009,28(2):109-119.MAO Jing-wen,SHAO Yong-jun,XIE Gui-qing,et al.Mineral Deposit Model for Porphyry-skarn Polymetallic Copper Deposits in Tongling Ore Dense District of Middle-lower Yangtze Valley Metallogenic Belt[J].Mineral Deposits,2009,28(2):109-119.
[45]陈玉明,杨汇群.阿根廷的矿产资源和矿业开发[J].国土资源情报,2015(2):14-20.CHEN Yu-ming,YANG Hui-qun.Mineral Resources and Mineral Development in Argentina[J].Land and Resources Information,2015(2):14-20.
[46]朱章显,杨振强,姚华舟,等.东南亚巽他群岛埃达克岩的分布及斑岩型铜(金)矿成矿预测的地质准则[J].地质通报,2009,28(2/3):333-342.ZHU Zhang-xian,YANG Zhen-qiang,YAO Hua-zhou,et al.Distribution of Adakite and Adakite-like Rocks and Geochemical Criteria for Exploration in Epithermal and Porphyry Deposits,Sunda Islands,Southeast Asia[J].Geological Bulletin of China,2009,28(2/3):333-342.