山东牟平—乳山金成矿带南段煌斑岩成因机制研究
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摘要
山东牟平—乳山金成矿带东南部发育大量的煌斑岩脉,主要为云斜煌岩和斜煌岩。本文选择牟乳带南段冯家镇地表出露的煌斑岩样品进行LA-ICP-MS锆石U-Pb年代学和全岩主微量元素研究。定年结果表明其成岩年龄为(150.6±6.1) Ma,属晚侏罗世。煌斑岩SiO_2=47.15%～58.91%,碱性岩系列,岩石为玄武质安山岩,属于太平洋型(钠质)火山岩。岩石具有富集大离子亲石元素(LILE)和轻稀土元素(LREE)、相对亏损高场强元素(HFSE)的特征。成岩过程中黑云母、角闪石、单斜辉石和少量的斜长石的分离结晶作用,研究认为该区的煌斑岩是来自于古太平洋板块的俯冲背景下幔源岩浆上侵,同时受到了壳源物质的混染。
There are lots of lamprophyre veins in the southeastern part of the Muping–Rushan gold metallogenic belt, which mainly comprise kersantite and fraidronite. In this paper, using geochemical and zircon LA-ICP-MS U-Pb dating methods, the authors selected the surface lamprophyres from Fengjia Town to do the study. The dating result shows that the petrogenetic age is(150.6±6.1) Ma, suggesting late Jurassic magmatic activity.Geochemical results show that the lamprophyres contain SiO_2 47.15%～58.91%, and belong to alkaline rock series.The rocks are basaltic andesite, belonging to the Pacific type(sodium) volcanic rocks. The rocks are characterized by enrichment of large ion lithophile elements(LILE) and light rare earth elements(LREE), and relative depletion of high field strength elements(HFSE). The crystallization of biotite, amphibole, clinopyroxene and a small amount of plagioclase occurred during the rock-forming process. Lamprophyres were formed during the subduction of the paleo-Pacific plate, resulted from mantle-derived magma intrusion, and was contaminated by crustal source materials.
There are lots of lamprophyre veins in the southeastern part of the Muping–Rushan gold metallogenic belt, which mainly comprise kersantite and fraidronite. In this paper, using geochemical and zircon LA-ICP-MS U-Pb dating methods, the authors selected the surface lamprophyres from Fengjia Town to do the study. The dating result shows that the petrogenetic age is(150.6±6.1) Ma, suggesting late Jurassic magmatic activity.Geochemical results show that the lamprophyres contain SiO_2 47.15%～58.91%, and belong to alkaline rock series.The rocks are basaltic andesite, belonging to the Pacific type(sodium) volcanic rocks. The rocks are characterized by enrichment of large ion lithophile elements(LILE) and light rare earth elements(LREE), and relative depletion of high field strength elements(HFSE). The crystallization of biotite, amphibole, clinopyroxene and a small amount of plagioclase occurred during the rock-forming process. Lamprophyres were formed during the subduction of the paleo-Pacific plate, resulted from mantle-derived magma intrusion, and was contaminated by crustal source materials.
引文
胡受奚,孙景贵,凌洪飞,叶瑛,翟建平,方长泉.2001.中生代苏-鲁活动大陆边缘榴辉岩、煌斑岩、金矿及富集地幔间的成因联系[J].岩石学报,17(3):425-435.
孔华,全铁军,奚小双,钟江临,陈泽峰,王高,郭碧莹,赵志强.2013.湖南宝山矿区煌斑岩的地球化学特征及地质意义[J].中国有色金属学报,23(9):2671-2682.
李洪奎,李逸凡,耿科,禚传源,张玉波,梁太涛,王峰.2013.鲁东地区古元古界形成的大地构造环境探讨[J].地质调查与研究,36(2):114-122,130.
李洪奎,李大鹏,耿科,郭宝奎,禚传源,梁太涛.2017.胶东地区燕山期岩浆活动及其构造环境--来自单颗锆石SHRIMP年代学的记录[J].地质学报,91(1):163-179.
李兆龙.1993.胶东金矿床地质地球化学[M].天津:天津科学技术出版社.
刘燊,胡瑞忠,赵军红,冯彩霞,钟宏,曹建劲,史丹妮.2005.胶北晚中生代煌斑岩的岩石地球化学特征及其成因研究[J].岩石学报,21(3):947-958.
马芳,孙丰月,霍亮,奥琮.2014.山东焦家金矿煌斑岩特征及其与金矿化关系[J].世界地质,33(2):388-398.
毛景文,王志良.2000.中国东部大规模成矿时限及其动力学背景的初步探讨[J].矿床地质,19(4):289-296.
毛景文,李晓峰,张作衡,王义天,李厚民,胡华斌.2003.中国东部中生代浅成热液金矿的类型、特征及其地球动力学背景[J].高校地质学报,9(4):620-637.
邱连贵,任凤楼,曹忠祥,张岳桥.2008.胶东地区晚中生代岩浆活动及对大地构造的制约[J].大地构造与成矿学,32(1):117-123.
申玉科,邓军,徐叶兵.2005.煌斑岩在玲珑金矿田形成过程中的地质意义[J].地质与勘探,41(3):45-49.
孙丰月.1994.胶东地区中新生代区域构造演化与成矿[J].长春地质学院学报,24(4):378-384,422.
孙丰月,石准立.1995.煌斑岩与某些热液矿床关系新探--兼论幔源C-H-O流体的分异演化[J].地质找矿论丛,10(2):72-81.
翟明国,杨进辉,刘文军.2001.胶东大型黄金矿集区及大规模成矿作用[J].中国科学(D辑:地球科学),31(7):545-552.
郑世帅,张少华,胡鑫蒙,张志明,叶嘉仪,杨宇航.2017.煌斑岩相关研究进展综述[J].低碳世界,(28):78-80.
祝德成,许庆林,吕大炜,杨仕鹏,杨振毅,杨庆,沈晓丽.2018.牟乳成矿带北段邓格庄金矿煌斑岩与金矿成矿关系[J].地球学报,39(3):319-328.
BERNARD-GRIFFITHS J,FOURCADE S,DUPUY C.1991.Isotopic study(Sr,Nd,O and C)of lamprophyres and associated dykes from Tamazert(Morroco):Crustal contamination processes and source characteristics[J].Earth and Planetary Science Letters,103(1-4):190-199.
CURRIE K L,WILLIAMS P R.1993.An Archean calc-alkaline lamprophyre suite,northeastern Yilgarn Block,western Australia[J].Lithos,31:33-50.
HU Shou-xi,SUN Jing-gui,LING Hong-fei,YE Ying,ZHAIJian-ping,FANG Chang-quan.2001.Genetic relationship between eclogite,lamprophyre,gold deposit and enriched mantle of Su-Lu active continental margin in the Mesozoic,China[J].Acta Petrologica Sinica,17(3):425-435(in Chinese with English abstract).
IRVINE T N,BARAGAR W R A.1971.A guide to the chemical classification of the common volcanic rocks[J].Canada Journal Earth Science,8:523-548.
JAHN B M,WU F,LO C H,TSAI C H.1999.Crust-mantle interaction induced by deep subduction of the continental crust:geochemical and Sr-Nd isotopic evidence from post-collisional mafic-ultramafic intrusions of the northern Dabie complex,central China[J].Chemical Geology,157(1):119-146.
LI Zhao-long.1993.Geological geochemistry of gold deposits in Jiaodong[M].Tianjin:Tianjin Science and Technology Press(in Chinese).
KONG Hua,QUAN Tie-jun,XI Xiao-shuang,ZHONG Jiang-lin,CHEN Ze-feng,WANG Gao,GUO Bi-ying,ZHAO Zhi-qiang.2013.Geochemical characteristics of lamprophyre and its geological significance in Baoshan deposit,Hunan province,China[J].The Chinese Journal of Nonferrous Metals,23(9):2671-2682(in Chinese with English abstract).
KOSCHEK G.1993.Origin and significance of the SEMcathodoluminescence from zircon[J].Journal of Microscopy,171:223-232.
LI Hong-kui,LI Yi-fan,GENG Ke,ZHUO Chuan-yuan,ZHANGYu-bo,LIANG Tai-tao,WANG Feng.2013.Palaeoproterozoic Tectonic Setting in the Eastern Shandong Province[J].Geological Survey and Research,36(2):114-122,130(in Chinese with English abstract).
LI Hong-kui,LI Da-peng,GENG Ke,GUO Bao-kui,ZHUOChuan-yuan,LIANG Tai-tao.2017.The Mesozoic Magmaticactivities Framework in Jiaodong Area:SHRIMPChronology Recording of Single Particle Zircon[J].Acta Geologica Sinica,91(1):163-179(in Chinese with English abstract).
LIU Shen,HU Rui-zhong,ZHAO Jun-hong,FENG Cai-xia,ZHONG Hong,CAO Jian-jin,SHI Dan-ni.2005.Geochemical characteristics and petrogenetic investigation of the Late Mesozoic lamprophyres of Jiaobei,Shandong province[J].Acta Petrologica Sinica,21(3):947-958(in Chinese with English abstract).
MA Fang,SUN Feng-yue,HUO Liang,AO Cong.2014.Lamprophyre characteristics and their relation to gold mineralization of Jiaojia gold deposit,Shandong[J].Global Geology,33(02):388-398(in Chinese with English abstract).
MAO Jing-wen,WANG Zhi-liang.2000.A preliminary study on time limits and geodynamic setting of large-scale metallogeny in east China[J].Mineral Deposits,19(4):289-296(in Chinese with English abstract).
MAO Jing-wen,LI Xiao-feng,ZHANG Zuo-heng,WANG Yi-tian,LI Hou-min,HU Hua-bin.2003.Geology,distribution,types and tectonic settings of Mesozoic epithermal gold deposits in east China[J].Geological Journal of China Universities,9(4):620-637(in Chinese with English abstract).
PEARCE J A.1982.Trace element characteristics of lavas from destructive plate boundaries[J].In Thorpe R.S.(ed.)Andesites,525-48.
PRELEVI?D,FOLEY S F,CVETKOVIC V,ROMER R L.2004.Origin of minette by mixing of lamproite and dacitemagmas in VelikiMajdan Serbia[J].Journal of Petrology,45:759-792.
PUPIN J P.1980.Zircon and granite petrology[J].Contributions to Mineralogy and Petrology,73(3):207-220.
QIU Lian-gui,REN Feng-lou,CAO Zhong-xiang,ZHANGYue-qiao.2008.Late Mesozoic magmatic activities and their constraints on geotectonics of Jiaodong region[J].Geotectonica et Metallogenia,32(1):117-123(in Chinese with English abstract).
RICKWOOD P C.1989.Boundary lines within petrologic diagrams which use oxides of major and minor elements[J].Lithos,22:247-263.
ROCK N M S,GROVES D I.1998.Can lamprophyresresolve the genetic controversy over mesothermal gold deposits?[J].Geology,16:538-541.
ROCK N M S.1991.Lampro[J].Glasgow:Blackie:1-285.
SHEN Yu-ke,DENG Jun,XU Ye-bing.2005.Geological significance of lamprophyre during gold mineralzationg in the Linglong ore field[J].Geology and Prospecting,39(3):45-49(in Chinese with English abstract).
STILLE H,HOLMBERG M,NORD G.1989.Support of weak rock with grouted bolts and shotcrete[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,26(1):99-113.
SUN Feng-yue.1994.Mesozoic-Cenozoic regional tectonic evolution and gold mineralization in Jiaodong area,Shandong province[J].Journal of Jilin University,24(4):378-384,422(in Chinese with English abstract).
SUN Feng-yue,SHI Zhun-li.1995.The relationship between lamprophyres and some hydrothermal deposits:implications for a differentiation model of mantle-derived C-H-O fluids[J].Contributions to Geology and Mineral Resouces Research,10(02):72-81(in Chinese with English abstract).
SUN S S,MCDONOUGH W F.1989.Chemical and isotopic systematics of oceanic basalts:implication for mantle composition and processes[J].Geological Society Special Publication,2:313-345.
TAYLOR S R,MCLENNAN S M.1986.The continental crust:Its composition and Evolution[J].Physics of the Earth and Planetary Interiors,42(3):196-197.
ZHAI Ming-guo,YANG Jin-hui,LIU Wen-jun.2001.Jiaodong large gold deposit area and large-scale mineralization[J].Science in China(SeriesD),31(7):545-552(in Chinese with English abstract).
ZHENG Shi-shuai,ZHANG Shao-hua,HU Xin-meng,ZHANGZhi-ming,YE Jia-yi,YANG Yu-hang.2017.Review of Lamprophyre[J].Low Carbon World,(28):78-80(in Chinese with English abstract).
ZHU De-cheng,XU Qing-lin,LüDa-wei,YANG Shi-peng,YANGZhen-yi,YANG Qing,SHEN Xiao-li.2018.The relationship between Lamprophyre and Gold Mineralization in the Denggezhuang Gold Deposit along the Northern Section of the Mouping-Rushan Metallogenic Belt,Shandong Province[J].Acta Geoscientica Sinica,39(3):319-328(in Chinese with English abstract).
孔华,全铁军,奚小双,钟江临,陈泽峰,王高,郭碧莹,赵志强.2013.湖南宝山矿区煌斑岩的地球化学特征及地质意义[J].中国有色金属学报,23(9):2671-2682.
李洪奎,李逸凡,耿科,禚传源,张玉波,梁太涛,王峰.2013.鲁东地区古元古界形成的大地构造环境探讨[J].地质调查与研究,36(2):114-122,130.
李洪奎,李大鹏,耿科,郭宝奎,禚传源,梁太涛.2017.胶东地区燕山期岩浆活动及其构造环境--来自单颗锆石SHRIMP年代学的记录[J].地质学报,91(1):163-179.
李兆龙.1993.胶东金矿床地质地球化学[M].天津:天津科学技术出版社.
刘燊,胡瑞忠,赵军红,冯彩霞,钟宏,曹建劲,史丹妮.2005.胶北晚中生代煌斑岩的岩石地球化学特征及其成因研究[J].岩石学报,21(3):947-958.
马芳,孙丰月,霍亮,奥琮.2014.山东焦家金矿煌斑岩特征及其与金矿化关系[J].世界地质,33(2):388-398.
毛景文,王志良.2000.中国东部大规模成矿时限及其动力学背景的初步探讨[J].矿床地质,19(4):289-296.
毛景文,李晓峰,张作衡,王义天,李厚民,胡华斌.2003.中国东部中生代浅成热液金矿的类型、特征及其地球动力学背景[J].高校地质学报,9(4):620-637.
邱连贵,任凤楼,曹忠祥,张岳桥.2008.胶东地区晚中生代岩浆活动及对大地构造的制约[J].大地构造与成矿学,32(1):117-123.
申玉科,邓军,徐叶兵.2005.煌斑岩在玲珑金矿田形成过程中的地质意义[J].地质与勘探,41(3):45-49.
孙丰月.1994.胶东地区中新生代区域构造演化与成矿[J].长春地质学院学报,24(4):378-384,422.
孙丰月,石准立.1995.煌斑岩与某些热液矿床关系新探--兼论幔源C-H-O流体的分异演化[J].地质找矿论丛,10(2):72-81.
翟明国,杨进辉,刘文军.2001.胶东大型黄金矿集区及大规模成矿作用[J].中国科学(D辑:地球科学),31(7):545-552.
郑世帅,张少华,胡鑫蒙,张志明,叶嘉仪,杨宇航.2017.煌斑岩相关研究进展综述[J].低碳世界,(28):78-80.
祝德成,许庆林,吕大炜,杨仕鹏,杨振毅,杨庆,沈晓丽.2018.牟乳成矿带北段邓格庄金矿煌斑岩与金矿成矿关系[J].地球学报,39(3):319-328.
BERNARD-GRIFFITHS J,FOURCADE S,DUPUY C.1991.Isotopic study(Sr,Nd,O and C)of lamprophyres and associated dykes from Tamazert(Morroco):Crustal contamination processes and source characteristics[J].Earth and Planetary Science Letters,103(1-4):190-199.
CURRIE K L,WILLIAMS P R.1993.An Archean calc-alkaline lamprophyre suite,northeastern Yilgarn Block,western Australia[J].Lithos,31:33-50.
HU Shou-xi,SUN Jing-gui,LING Hong-fei,YE Ying,ZHAIJian-ping,FANG Chang-quan.2001.Genetic relationship between eclogite,lamprophyre,gold deposit and enriched mantle of Su-Lu active continental margin in the Mesozoic,China[J].Acta Petrologica Sinica,17(3):425-435(in Chinese with English abstract).
IRVINE T N,BARAGAR W R A.1971.A guide to the chemical classification of the common volcanic rocks[J].Canada Journal Earth Science,8:523-548.
JAHN B M,WU F,LO C H,TSAI C H.1999.Crust-mantle interaction induced by deep subduction of the continental crust:geochemical and Sr-Nd isotopic evidence from post-collisional mafic-ultramafic intrusions of the northern Dabie complex,central China[J].Chemical Geology,157(1):119-146.
LI Zhao-long.1993.Geological geochemistry of gold deposits in Jiaodong[M].Tianjin:Tianjin Science and Technology Press(in Chinese).
KONG Hua,QUAN Tie-jun,XI Xiao-shuang,ZHONG Jiang-lin,CHEN Ze-feng,WANG Gao,GUO Bi-ying,ZHAO Zhi-qiang.2013.Geochemical characteristics of lamprophyre and its geological significance in Baoshan deposit,Hunan province,China[J].The Chinese Journal of Nonferrous Metals,23(9):2671-2682(in Chinese with English abstract).
KOSCHEK G.1993.Origin and significance of the SEMcathodoluminescence from zircon[J].Journal of Microscopy,171:223-232.
LI Hong-kui,LI Yi-fan,GENG Ke,ZHUO Chuan-yuan,ZHANGYu-bo,LIANG Tai-tao,WANG Feng.2013.Palaeoproterozoic Tectonic Setting in the Eastern Shandong Province[J].Geological Survey and Research,36(2):114-122,130(in Chinese with English abstract).
LI Hong-kui,LI Da-peng,GENG Ke,GUO Bao-kui,ZHUOChuan-yuan,LIANG Tai-tao.2017.The Mesozoic Magmaticactivities Framework in Jiaodong Area:SHRIMPChronology Recording of Single Particle Zircon[J].Acta Geologica Sinica,91(1):163-179(in Chinese with English abstract).
LIU Shen,HU Rui-zhong,ZHAO Jun-hong,FENG Cai-xia,ZHONG Hong,CAO Jian-jin,SHI Dan-ni.2005.Geochemical characteristics and petrogenetic investigation of the Late Mesozoic lamprophyres of Jiaobei,Shandong province[J].Acta Petrologica Sinica,21(3):947-958(in Chinese with English abstract).
MA Fang,SUN Feng-yue,HUO Liang,AO Cong.2014.Lamprophyre characteristics and their relation to gold mineralization of Jiaojia gold deposit,Shandong[J].Global Geology,33(02):388-398(in Chinese with English abstract).
MAO Jing-wen,WANG Zhi-liang.2000.A preliminary study on time limits and geodynamic setting of large-scale metallogeny in east China[J].Mineral Deposits,19(4):289-296(in Chinese with English abstract).
MAO Jing-wen,LI Xiao-feng,ZHANG Zuo-heng,WANG Yi-tian,LI Hou-min,HU Hua-bin.2003.Geology,distribution,types and tectonic settings of Mesozoic epithermal gold deposits in east China[J].Geological Journal of China Universities,9(4):620-637(in Chinese with English abstract).
PEARCE J A.1982.Trace element characteristics of lavas from destructive plate boundaries[J].In Thorpe R.S.(ed.)Andesites,525-48.
PRELEVI?D,FOLEY S F,CVETKOVIC V,ROMER R L.2004.Origin of minette by mixing of lamproite and dacitemagmas in VelikiMajdan Serbia[J].Journal of Petrology,45:759-792.
PUPIN J P.1980.Zircon and granite petrology[J].Contributions to Mineralogy and Petrology,73(3):207-220.
QIU Lian-gui,REN Feng-lou,CAO Zhong-xiang,ZHANGYue-qiao.2008.Late Mesozoic magmatic activities and their constraints on geotectonics of Jiaodong region[J].Geotectonica et Metallogenia,32(1):117-123(in Chinese with English abstract).
RICKWOOD P C.1989.Boundary lines within petrologic diagrams which use oxides of major and minor elements[J].Lithos,22:247-263.
ROCK N M S,GROVES D I.1998.Can lamprophyresresolve the genetic controversy over mesothermal gold deposits?[J].Geology,16:538-541.
ROCK N M S.1991.Lampro[J].Glasgow:Blackie:1-285.
SHEN Yu-ke,DENG Jun,XU Ye-bing.2005.Geological significance of lamprophyre during gold mineralzationg in the Linglong ore field[J].Geology and Prospecting,39(3):45-49(in Chinese with English abstract).
STILLE H,HOLMBERG M,NORD G.1989.Support of weak rock with grouted bolts and shotcrete[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,26(1):99-113.
SUN Feng-yue.1994.Mesozoic-Cenozoic regional tectonic evolution and gold mineralization in Jiaodong area,Shandong province[J].Journal of Jilin University,24(4):378-384,422(in Chinese with English abstract).
SUN Feng-yue,SHI Zhun-li.1995.The relationship between lamprophyres and some hydrothermal deposits:implications for a differentiation model of mantle-derived C-H-O fluids[J].Contributions to Geology and Mineral Resouces Research,10(02):72-81(in Chinese with English abstract).
SUN S S,MCDONOUGH W F.1989.Chemical and isotopic systematics of oceanic basalts:implication for mantle composition and processes[J].Geological Society Special Publication,2:313-345.
TAYLOR S R,MCLENNAN S M.1986.The continental crust:Its composition and Evolution[J].Physics of the Earth and Planetary Interiors,42(3):196-197.
ZHAI Ming-guo,YANG Jin-hui,LIU Wen-jun.2001.Jiaodong large gold deposit area and large-scale mineralization[J].Science in China(SeriesD),31(7):545-552(in Chinese with English abstract).
ZHENG Shi-shuai,ZHANG Shao-hua,HU Xin-meng,ZHANGZhi-ming,YE Jia-yi,YANG Yu-hang.2017.Review of Lamprophyre[J].Low Carbon World,(28):78-80(in Chinese with English abstract).
ZHU De-cheng,XU Qing-lin,LüDa-wei,YANG Shi-peng,YANGZhen-yi,YANG Qing,SHEN Xiao-li.2018.The relationship between Lamprophyre and Gold Mineralization in the Denggezhuang Gold Deposit along the Northern Section of the Mouping-Rushan Metallogenic Belt,Shandong Province[J].Acta Geoscientica Sinica,39(3):319-328(in Chinese with English abstract).