胶西北焦家式金矿控矿构造蚀变带的地球化学标志
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摘要
胶西北地区金矿在我国黄金勘查及生产中占据重要地位,找矿潜力巨大。解决该地区深部及外围地质找矿问题的有效途径之一,是提出新的定量化找矿标志。以焦家式金矿为例,根据钻孔岩石测量结果,认为该矿床是在初始矿源岩基础上叠加了中生代构造热液的复成构造蚀变岩型矿床,并对矿床的地球化学标志进行了剖析和总结。结果显示,焦家式金矿的形成受初始矿源岩的基础性控制,矿源岩以富Au且显著富S为特征。在初始矿源岩基础上,构造蚀变带地段发生后期热液活动,导致矿源岩中元素重新活化迁移,典型地球化学标志是Na_2O等元素发生贫化,形成负异常。总之,Au、S等元素富集形成的正异常是初始矿源岩的地球化学标志,而Na_2O等元素贫化形成的负异常是控矿构造蚀变带的地球化学标志。
The northwestern Jiaodong peninsula,the most important gold exploration and production province in China,has huge potential for further prospecting.To solve the problem of deep and peripheral geological prospecting,one of the effective ways is putting forward new quantitative index.This paper takes Jiaojia-type gold deposit as an example,and carries out the research of the measurement results of drilling core.The research demonstrates that this deposit is a compound tectonic altered rock type deposit which was formed on the basis of the initial source rocks superposed by the Mesozoic tectonic hydrothermal fluid.The study of the deposit geochemical marks shows that the formation of the Jiaojia-type gold deposit was controlled by the initial source rocks characterized by the enrichment of Au and significant enrichment of S.On the basis of initial source rock,the late hydrothermal activities occurred in the tectonic alteration zone,and caused the activation and migration of elements in the initial source rock.The typical geochemical mark is some elements depletion such as Na_2O,and forms a negative anomaly.All in all,the enrichment of elements such as Au and S forming the positive anomaly is the geochemical mark of the initial source rock,and the depletion of elements such as Na_2O forming the negative anomaly is the geochemical mark of the tectonic alteration zone.
The northwestern Jiaodong peninsula,the most important gold exploration and production province in China,has huge potential for further prospecting.To solve the problem of deep and peripheral geological prospecting,one of the effective ways is putting forward new quantitative index.This paper takes Jiaojia-type gold deposit as an example,and carries out the research of the measurement results of drilling core.The research demonstrates that this deposit is a compound tectonic altered rock type deposit which was formed on the basis of the initial source rocks superposed by the Mesozoic tectonic hydrothermal fluid.The study of the deposit geochemical marks shows that the formation of the Jiaojia-type gold deposit was controlled by the initial source rocks characterized by the enrichment of Au and significant enrichment of S.On the basis of initial source rock,the late hydrothermal activities occurred in the tectonic alteration zone,and caused the activation and migration of elements in the initial source rock.The typical geochemical mark is some elements depletion such as Na_2O,and forms a negative anomaly.All in all,the enrichment of elements such as Au and S forming the positive anomaly is the geochemical mark of the initial source rock,and the depletion of elements such as Na_2O forming the negative anomaly is the geochemical mark of the tectonic alteration zone.
引文
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[13]孙景贵,胡受奚,沈昆,等.胶东金矿区矿田体系中基性-中酸性脉岩的碳、氧同位素地球化学研究[J].岩石矿物学杂志,2001,20(1):47-56.
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[19]吕古贤,邓军,孔庆存,等.山东玲珑和焦家金矿成矿深度研究与测算[J].地质论评,1996,42(6):550-559.
[20]毛景文,华仁民,李晓波.浅议大规模成矿作用与大型矿集区[J].矿产地质,1999,18(4):291-299.
[21]牛树银,孙爱群,张建珍,等.胶东西北部金矿集中区深部控矿构造探讨[J].地质学报,2011,85(7):1094-1107.
[22]徐刚.焦家金矿田断裂构造与矿化特征的关系研究[J].矿床地质,2002,21(增刊):731-734.
[23]卢焕章,ARCAMBAULT G,李院生,等.山东玲珑—焦家地区形变类型与金矿的关系[J].地质学报,1999,73(2):174-188.
[24]郭涛,吕古贤,邓军.焦家金矿床容矿裂隙特征及成生机制[J].地球学报,2000,21(1):1-6.
[25]张迎春,吕古贤,温桂军,等.胶东金矿金矿集中区蚀变带划分的新探索[J].矿物学报,2011(增刊):138-139.
[26]杨金中,沈远超,刘铁兵,等.山东蓬家夼金矿床成矿流体地球化学特征[J].矿床地质,2000,19(3):235-244.
[27]鄢明才,迟清华.中国东部地壳与岩石的化学组成[M].北京:科学出版社,1997:73-75,93-94.
[28]王中亮,赵荣新,张庆,等.胶西北高Ba-Sr郭家岭型花岗岩岩浆混合成因:岩石地球化学与Sr-Nd同位素约束[J].岩石学报,2014,30(9):2595-2608.
[29]苗来成,罗镇宽,关康,等.玲珑花岗岩中锆石的离子质谱U-Pb年龄及其岩石学意义[J].岩石学报,1998,14(2):1998:198-206.
[30]马生明,朱立新,刘崇民,等.斑岩型Cu(Mo)矿床中微量元素富集贫化规律研究[J].地球学报,2009,30(6):821-830.
[31]MA S M,ZHU L X,LIU C M,et al.Anomaly models of spatial structures for copper-molybdenum ore deposits and their application[J].Acta Geologica Sinica(English Edition),2013,87(3):843-857.
[32]马生明,朱立新.热液成因有色金属矿多维异常体系:以马头斑岩型钼铜矿为例[J].吉林大学学报(地球科学版),2014,44(1):134-144.
[33]马生明,朱立新,席明杰,等.安徽马头矿区热液成矿边界的地球化学标志[J].地学前缘,2015,22(4):131-140.
[34]吕古贤.矿田地质分类研究[J].地学前缘,2015,22(4):1-12.
[2]吕承训,吴淦国,陈小龙,等.新城金矿蚀变带构造与地球化学特征[J].大地构造与成矿学,2011,35(4):618-627.
[3]宋明春,崔书学,杨之利,等.山东焦家金矿带深部找矿的重大突破及其意义[J].地质与勘探,2008,44(1):1-8.
[4]宋明春,王化江,崔书学,等.胶西北主要成矿带深部金矿床与浅部金矿的关系[J].矿床地质,2010,29(增刊):989-990.
[5]宋明春,宋英昕,崔书学,等.胶东焦家特大型金矿床深、浅部矿体特征对比[J].矿床地质,2011,30(5):923-932.
[6]郭春影,张文钊,葛良胜,等.胶东西北部金矿床深部资源潜力与找矿方向[J].地质与勘探,2012,48(1):58-67.
[7]庆承松,刘成刚.胶东焦家式金矿与玲珑式金矿的成因联系及成矿热液来源[J].合肥工业大学学报(自然科学版),1993,16(3):146-151.
[8]孙华山,孙林,赵显辉,等.招掖地区郭家岭花岗岩控矿的几点证据及找矿指示意义[J].黄金,2007,28(4):14-18,31.
[9]杨进辉,周新华,陈立辉.胶东地区破碎带蚀变岩型金矿时代的测定及其地质意义[J].岩石学报,2000,16(3):454-458.
[10]毛景文,李厚民,王义天,等.地幔流体参与胶东金矿成矿作用的氢氧碳硫同位素证据[J].地质学报,2005,79(6):839-857.
[11]吕古贤,郭涛,刘杜鹃.玲珑-焦家式金矿构造地质特征及成矿构造物理化学参量因子分析:以阜山金矿区为例[J].地球学报,2002,23(5):409-416.
[12]杨金中,沈远超,刘铁兵,等.山东蓬家夼金矿床成矿流体地球化学特征[J].矿床地质,2000,19(3):235-244.
[13]孙景贵,胡受奚,沈昆,等.胶东金矿区矿田体系中基性-中酸性脉岩的碳、氧同位素地球化学研究[J].岩石矿物学杂志,2001,20(1):47-56.
[14]毛景文,赫英,丁悌平.胶东金矿形成期间地幔流体参与成矿过程的碳氧氢同位素证据[J].矿床地质,2002,21(2):121-128.
[15]郭涛,邓军,吕古贤,等.焦家金矿床成矿流体运移的通道、方式及驱动机制[J].地球学报,2008,29(1):81-88.
[16]范潇,吕古贤,郭涛.焦家金矿流体的运移通道特征及其启示[J].矿物学报,2011(增刊):476-468.
[17]杨金中,李光明.胶东中生代两期金矿化作用的对比研究及其意义[J].地质与勘探,2001,37(1):133-137.
[18]李厚民,沈远超,刘铁兵.胶东西北部焦家式与玲珑式金矿的成因联系[J].矿床地质,2002,21(增刊):621-624.
[19]吕古贤,邓军,孔庆存,等.山东玲珑和焦家金矿成矿深度研究与测算[J].地质论评,1996,42(6):550-559.
[20]毛景文,华仁民,李晓波.浅议大规模成矿作用与大型矿集区[J].矿产地质,1999,18(4):291-299.
[21]牛树银,孙爱群,张建珍,等.胶东西北部金矿集中区深部控矿构造探讨[J].地质学报,2011,85(7):1094-1107.
[22]徐刚.焦家金矿田断裂构造与矿化特征的关系研究[J].矿床地质,2002,21(增刊):731-734.
[23]卢焕章,ARCAMBAULT G,李院生,等.山东玲珑—焦家地区形变类型与金矿的关系[J].地质学报,1999,73(2):174-188.
[24]郭涛,吕古贤,邓军.焦家金矿床容矿裂隙特征及成生机制[J].地球学报,2000,21(1):1-6.
[25]张迎春,吕古贤,温桂军,等.胶东金矿金矿集中区蚀变带划分的新探索[J].矿物学报,2011(增刊):138-139.
[26]杨金中,沈远超,刘铁兵,等.山东蓬家夼金矿床成矿流体地球化学特征[J].矿床地质,2000,19(3):235-244.
[27]鄢明才,迟清华.中国东部地壳与岩石的化学组成[M].北京:科学出版社,1997:73-75,93-94.
[28]王中亮,赵荣新,张庆,等.胶西北高Ba-Sr郭家岭型花岗岩岩浆混合成因:岩石地球化学与Sr-Nd同位素约束[J].岩石学报,2014,30(9):2595-2608.
[29]苗来成,罗镇宽,关康,等.玲珑花岗岩中锆石的离子质谱U-Pb年龄及其岩石学意义[J].岩石学报,1998,14(2):1998:198-206.
[30]马生明,朱立新,刘崇民,等.斑岩型Cu(Mo)矿床中微量元素富集贫化规律研究[J].地球学报,2009,30(6):821-830.
[31]MA S M,ZHU L X,LIU C M,et al.Anomaly models of spatial structures for copper-molybdenum ore deposits and their application[J].Acta Geologica Sinica(English Edition),2013,87(3):843-857.
[32]马生明,朱立新.热液成因有色金属矿多维异常体系:以马头斑岩型钼铜矿为例[J].吉林大学学报(地球科学版),2014,44(1):134-144.
[33]马生明,朱立新,席明杰,等.安徽马头矿区热液成矿边界的地球化学标志[J].地学前缘,2015,22(4):131-140.
[34]吕古贤.矿田地质分类研究[J].地学前缘,2015,22(4):1-12.