广西大厂矿田成矿构造系列与成矿系列的时-空联系
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摘要
基于构造解析,认为大厂矿田存在海西期喷流-沉积成矿系统、印支期层滑剪切成矿系统及燕山期岩浆成矿系统;91、92号层状矿体是集海西期喷流沉积成矿、印支期与燕山期叠加成矿于一体的多因复成矿体;印支期层滑剪切成矿系统控制了75、77、79、80号层状矿体与100号岩溶型矿体。燕山期成矿系统从早至晚包括:1控制细脉带矿体的偏正花状节理系成矿构造系统;2控制大脉带矿体的偏负花状张裂系成矿构造系统;3控制94、95、96号层状锌铜矿体及岩体接触带矽卡岩型铜锌矿体的、与岩体被动侵位-层滑剪切有关的成矿构造系统。认为丹池成矿带存在海西期喷流沉积成矿系列、印支期层滑剪切成矿系列及燕山期岩浆岩成矿系列;讨论了大厂矿田成矿构造系列与成矿系列的时空联系;从矿体形貌学上分析了矿体形貌与构造体系及样式之间的因果关系。印支期成矿观点的提出,不仅可以补充与丰富区域成矿与找矿的理论,对于了解古特提斯成矿域的成矿特征、构造过程及构造边界等科学问题,也具有重要的意义。
Structural analysis reveals three metallogenic systems in Dachang orefield,including Hercynian effusive-sedimentary metallogenic system(HMS),Indosinian layer-sliping and shearing metallogenic system(IMS)and Yanshannian magmatic metallogenic system(YMS).No.91 and No.92 layered orebodies are of polygenetic compound,which are controlled by three metallogenic systems.While No.75,No.77,No.79 and No.80 layered orebodies are controlled by the IMS,as well as No.100 karstic orebody.Studies show that the YMS consists of three subsystems from early to late period,including the partial positive flower metallotectonic subsystem controls the veinlet orebodies.The partial negative flower extensional metallotectonic subsystem which controls the large vein orebodies.The last subsystem associated with passive emplacement,layer-sliding and shearing of the rock mass,controls No.94,No.95,No.96 layered zinc-copper orebodies and skarn type copper-zinc orebodies.This paper holds that the Nandan-Hechi metallogenetic belt exists in three metallogenic series,which are Hercynian effusive-sedimentary metallogenic series,Indosinian layer-sliping and shearing metallogenic series and Yanshannian magmatic metallogenic series,respectively.The paper discussed the temporal and spatial relation between the metallogenic series and metallotectonic series,and analyzed the genetic relationship between the orebody morphology and structural style based on the orebody morphology in the Dachang orefield.Accordingly,Indosinian metallogenetic idea can not only supply and enrich the regional metallogenetic and prospecting theory,but also be of significance to learn about scientific problems of the Paleotethys metallogenetic domain,such as metallogenic features,tectonic process and tectonic boundary.
Structural analysis reveals three metallogenic systems in Dachang orefield,including Hercynian effusive-sedimentary metallogenic system(HMS),Indosinian layer-sliping and shearing metallogenic system(IMS)and Yanshannian magmatic metallogenic system(YMS).No.91 and No.92 layered orebodies are of polygenetic compound,which are controlled by three metallogenic systems.While No.75,No.77,No.79 and No.80 layered orebodies are controlled by the IMS,as well as No.100 karstic orebody.Studies show that the YMS consists of three subsystems from early to late period,including the partial positive flower metallotectonic subsystem controls the veinlet orebodies.The partial negative flower extensional metallotectonic subsystem which controls the large vein orebodies.The last subsystem associated with passive emplacement,layer-sliding and shearing of the rock mass,controls No.94,No.95,No.96 layered zinc-copper orebodies and skarn type copper-zinc orebodies.This paper holds that the Nandan-Hechi metallogenetic belt exists in three metallogenic series,which are Hercynian effusive-sedimentary metallogenic series,Indosinian layer-sliping and shearing metallogenic series and Yanshannian magmatic metallogenic series,respectively.The paper discussed the temporal and spatial relation between the metallogenic series and metallotectonic series,and analyzed the genetic relationship between the orebody morphology and structural style based on the orebody morphology in the Dachang orefield.Accordingly,Indosinian metallogenetic idea can not only supply and enrich the regional metallogenetic and prospecting theory,but also be of significance to learn about scientific problems of the Paleotethys metallogenetic domain,such as metallogenic features,tectonic process and tectonic boundary.
引文
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[18]汪劲草.成矿构造系列的基本问题[J].桂林工学院学报,2009,29(4):423-433.
[19]汪劲草.成矿构造的基本问题[J].地质学报,2010,84(1):59-69.
[20]汪劲草.矿体形貌分类及其成矿指示[J].桂林理工大学学报,2011,31(4):473-480.
[21]陈洪德,曾允孚,李孝全.丹池晚古生代盆地的沉积和构造演化[J].沉积学报,1989,7(4):85-96.
[22]张国林,蔡宏渊.广西大厂锡多金属矿床成因探讨[J].地质评论,1987,33(5):426-437.
[23]杨坤光,李学刚,戴传固,等.黔东南隔槽式褶皱成因分析[J].地学前缘,2012,19(5):53-60.
[24]汪劲草,王永东,程雄卫.正花状节理系对内蒙古常福龙金矿床的控制[J].桂林理工大学学报,2012,32(4):447-454.
[2]陈毓川.矿床的成矿系列[J].地学前缘,1994,1(3/4):90-94.
[3]翟裕生,姚书振,崔彬,等.成矿系列研究[M].武汉:中国地质大学出版社,1996.
[4]叶绪孙.大厂锡多金属矿田成矿规律与成矿预测[J].地质与勘探,1985(5):1-8.
[5]陈毓川,黄民智,徐珏,等.大厂锡矿地质[M].北京:地质出版社,1993.
[6]王登红,陈毓川,陈文,等.广西南丹大厂超大型锡多金属矿床的成矿时代[J].地质学报,2004,78(1):132-139.
[7]Fu M,Changkakoti A,Krouse H R,et al.An oxygen,hydrogen,sulfur,and carbon isotope study of carbonate-replacement(skarn)tin deposits of the Dachang tin field,China[J].Economic Geology,1991,86(8):1683-1703.
[8]蔡宏渊,张国林.试论广西大厂锡多金属矿床海底火山热泉(喷气)成矿作用[J].矿产地质研究院学报,1983(4):13-21.
[9]廖宗廷,杨斌.古海洋中的热水喷口——广西大厂例析[J].同济大学学报,1995,23(5):564-567.
[10]韩发,赵汝松,沈建忠,等.大厂锡多金属矿床地质及成因[M].北京:地质出版社,1997.
[11]曾允孚,王正瑛,田洪钧.广西大厂龙头山矿区矿床成因新探[J].成都地质学院学报,1982(3):15-26.
[12]涂光炽.锡和铅锌成矿作用的若干问题[J].矿产地质研究院学报,1984(1):1-11.
[13]雷良奇,曾允孚.热水沉积和岩浆气液叠加与大厂超大型锡-多金属矿床[J].地球化学,1993(3):252-260.
[14]Lattanzi P,Corazza M,Corsini F,et al.Sulfide mineralogy in the polymetallic cassiterite deposit of Dachang,P.R.China[J].Mineralium Deposita,1989,24:141-147.
[15]秦德先,洪托,田毓龙,等.广西大厂锡矿92号矿体矿床地质与技术经济[M].北京:地质出版社,2002.
[16]马杏垣.解析构造学刍议[J].地球科学——武汉地质学院学报,1983(3):1-6.
[17]汪劲草.成矿构造系列的类型划分与应用研究[D].长沙:中南大学,2001.
[18]汪劲草.成矿构造系列的基本问题[J].桂林工学院学报,2009,29(4):423-433.
[19]汪劲草.成矿构造的基本问题[J].地质学报,2010,84(1):59-69.
[20]汪劲草.矿体形貌分类及其成矿指示[J].桂林理工大学学报,2011,31(4):473-480.
[21]陈洪德,曾允孚,李孝全.丹池晚古生代盆地的沉积和构造演化[J].沉积学报,1989,7(4):85-96.
[22]张国林,蔡宏渊.广西大厂锡多金属矿床成因探讨[J].地质评论,1987,33(5):426-437.
[23]杨坤光,李学刚,戴传固,等.黔东南隔槽式褶皱成因分析[J].地学前缘,2012,19(5):53-60.
[24]汪劲草,王永东,程雄卫.正花状节理系对内蒙古常福龙金矿床的控制[J].桂林理工大学学报,2012,32(4):447-454.