衡阳盆地北缘盐田桥铜矿床成矿构造地质地球化学特征
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摘要
盐田桥铜矿床位于长寿-衡阳-观音阁断裂成矿带中部,属茶恩寺铜铅锌多金属成矿区内,是以铜矿为主,共(伴)生有铅锌矿等高-中温热液充填交代型矿床。以构造地球化学找矿为出发点,在研究区域构造地质背景、矿区构造地质特征及控矿因素的基础上,重点对F_1断裂构造岩主量元素、微量元素特征进行了分析,发现F_1中Cu、Pb、Zn、W等成矿元素有较大变化,说明元素的富集与断裂的活动有着极为密切的成因关系。富含成矿元素热液沿F_1断裂消弱带运移,并充填到构造裂隙中,与围岩发生交代作用而富集成矿。
The Yantianqiao copper deposit is located in the middle of the Changshou-Hengshan-Guanyinge fault,which is one part of the Chaensi lead-zinc metallogenic province.It mainly includes copper ores,and is companied with coexisting high-to medium-temparature hydrothermal filling and metasomatic deposits like tungsten ores.From the perspective of geochemical prospecting in fault structures,and based on the geological setting of the mining area,geological characteristics of fault structures and ore-controlling features,this paper analyses the main elements and trace elements of the fault structure of F_1 fault.A great variationis found among the Cu,Pb,Zn,W and other mineralization elements in F_1.The variation shows a close relationship between the enrichment of elements and the activities of the fault structure.Mineralization-element-rich hydrothermal liquids move along and fill up the fissures of the fault F_1.Due to the movement of these liquids,their metasomatism with wall rocks formed Yantianqiao deposit.
The Yantianqiao copper deposit is located in the middle of the Changshou-Hengshan-Guanyinge fault,which is one part of the Chaensi lead-zinc metallogenic province.It mainly includes copper ores,and is companied with coexisting high-to medium-temparature hydrothermal filling and metasomatic deposits like tungsten ores.From the perspective of geochemical prospecting in fault structures,and based on the geological setting of the mining area,geological characteristics of fault structures and ore-controlling features,this paper analyses the main elements and trace elements of the fault structure of F_1 fault.A great variationis found among the Cu,Pb,Zn,W and other mineralization elements in F_1.The variation shows a close relationship between the enrichment of elements and the activities of the fault structure.Mineralization-element-rich hydrothermal liquids move along and fill up the fissures of the fault F_1.Due to the movement of these liquids,their metasomatism with wall rocks formed Yantianqiao deposit.
引文
[1]李建威,李先福.湘赣边中新生代走滑断裂带的流体-岩石相互作用[J].地球科学:中国地质大学学报,1999,24(5):480-483.
[2]刘旭,曾宪科,王诗潮,等.衡阳盆地北缘金竹冲地区地质矿化特征及成矿机理探讨[J].湖南有色金属,2011,27(3):1-4.
[3]李福顺,钦杭成矿带衡阳盆地找矿方向及前景分析[J].华南地质与矿产,2012,28(4):360-368.
[4]邓湘伟,戴雪灵,黄满湘.柏坊铜矿成矿规律及成矿模式探讨[J].华南地质与矿产,2008,24(4):22-25.
[5]钟建华,李自安.湖南车江铜矿的成因及成矿模式[J].矿床地质,1997,16(3):243-252.
[6]柳智,黄满湘,马德成,等.湖南衡阳柏坊铜矿矿体地质特征及矿床成因探讨[J].南方金属,2011,182:16-25.
[7]祝兵,王诗潮,戴典文等.衡阳盆地北缘盐田桥矿区铜多金属矿矿化特征及找矿前景[J].湖南省地学新进展,2015,(12):83-89.
[8]吴开兴,胡瑞忠,彭建堂,等.新生代构造抬升与斑岩型铜、金矿床的次生富集作用[J].地质科技情报,2005,24(4):50-54.
[9]Li Xianhua,Zhou Hanwen,Liu Ying,et al.Shoshonitic intrusive suite in SE Guangxi:Petrology and geochemistry[J].Chinese Science Bulletin.2000,45(7):653-659.
[10]吴继承,王金荣,吴春俊等.湖南龙山地区金矿床断裂构造地球化学特征[J].矿产与地质,2007,21(3):351-357.
[11]赵建光,唐卫国,谢朝晖.湖南雪峰金矿田地球化学异常特征及其指示意义[J].黄金地质,2004,25(9):11-14.
[12]郑平,黄满湘.湖南杨林坳矿床控矿构造地质地球化学特征浅析[J].地质调查与研究,2011,34(3):198-202.
[13]陈宏毅,钱建平,刘青.广西高龙金矿鸡公岩矿段地质特征和构造地球化学找矿[J].地质科技情报,2012,31(3):89-97.
[14]林仟同.福建省崇安-石城构造带的地球化学特征及其成矿的关系[J].地质科技情报,2003,22(1):92-96.
[15]Chen Wenming,Zhang Chengxin,Lu Jiren,et al.Polygenetic mineralization of the early proterozoic tongkuangyu metaporphyry copper deposit in the zhongtiao mountains,Shanxi Province[J].Acta Geologica Sinica:English Edition,2010,72(2):154-168.
[2]刘旭,曾宪科,王诗潮,等.衡阳盆地北缘金竹冲地区地质矿化特征及成矿机理探讨[J].湖南有色金属,2011,27(3):1-4.
[3]李福顺,钦杭成矿带衡阳盆地找矿方向及前景分析[J].华南地质与矿产,2012,28(4):360-368.
[4]邓湘伟,戴雪灵,黄满湘.柏坊铜矿成矿规律及成矿模式探讨[J].华南地质与矿产,2008,24(4):22-25.
[5]钟建华,李自安.湖南车江铜矿的成因及成矿模式[J].矿床地质,1997,16(3):243-252.
[6]柳智,黄满湘,马德成,等.湖南衡阳柏坊铜矿矿体地质特征及矿床成因探讨[J].南方金属,2011,182:16-25.
[7]祝兵,王诗潮,戴典文等.衡阳盆地北缘盐田桥矿区铜多金属矿矿化特征及找矿前景[J].湖南省地学新进展,2015,(12):83-89.
[8]吴开兴,胡瑞忠,彭建堂,等.新生代构造抬升与斑岩型铜、金矿床的次生富集作用[J].地质科技情报,2005,24(4):50-54.
[9]Li Xianhua,Zhou Hanwen,Liu Ying,et al.Shoshonitic intrusive suite in SE Guangxi:Petrology and geochemistry[J].Chinese Science Bulletin.2000,45(7):653-659.
[10]吴继承,王金荣,吴春俊等.湖南龙山地区金矿床断裂构造地球化学特征[J].矿产与地质,2007,21(3):351-357.
[11]赵建光,唐卫国,谢朝晖.湖南雪峰金矿田地球化学异常特征及其指示意义[J].黄金地质,2004,25(9):11-14.
[12]郑平,黄满湘.湖南杨林坳矿床控矿构造地质地球化学特征浅析[J].地质调查与研究,2011,34(3):198-202.
[13]陈宏毅,钱建平,刘青.广西高龙金矿鸡公岩矿段地质特征和构造地球化学找矿[J].地质科技情报,2012,31(3):89-97.
[14]林仟同.福建省崇安-石城构造带的地球化学特征及其成矿的关系[J].地质科技情报,2003,22(1):92-96.
[15]Chen Wenming,Zhang Chengxin,Lu Jiren,et al.Polygenetic mineralization of the early proterozoic tongkuangyu metaporphyry copper deposit in the zhongtiao mountains,Shanxi Province[J].Acta Geologica Sinica:English Edition,2010,72(2):154-168.