西秦岭甘肃段特大型金矿床的地质地球化学特征及其成岩成矿年龄
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  • 英文篇名:Geological,Geochemical Characteristics and Diagenetic Age of the Super-large Gold Deposits in Western Qinling,Gansu Province
  • 作者:陈国忠 ; 龚全胜 ; 梁志录 ; 张愿宁 ; 麻红顺
  • 英文作者:CHEN Guozhong;GONG Quansheng;LIANG Zhilu;ZHANG Yuanning;MA Hongshun;No.3 Geology and Mineral Exploration Team,Gansu Provincial Bureau of Geology and Mineral Resources Exploration and Development;
  • 关键词:西秦岭 ; 特大型金矿 ; 对比研究 ; 卡林-造山复合型 ; 偏在性
  • 英文关键词:Western Qinling;;super-large gold deposit;;comparative study;;carlin-orogenic compound type;;proferentiality
  • 中文刊名:XBDI
  • 英文刊名:Northwestern Geology
  • 机构:甘肃省地矿局第三地质矿产勘查院;
  • 出版日期:2017-12-05
  • 出版单位:西北地质
  • 年:2017
  • 期:v.50;No.206
  • 基金:全国危机矿山接替资源勘查项目“甘肃省早子沟金矿接替资源勘查项目”(201201024061)资助
  • 语种:中文;
  • 页:XBDI201704012
  • 页数:14
  • CN:04
  • ISSN:61-1149/P
  • 分类号:95-108
摘要
西秦岭是中国具有大型、特大型金矿成矿条件的成矿带,通过对西秦岭甘肃段4个特大型金矿之间及其卡林型金矿、造山型金矿的地质、地球化学特征对比研究表明:这4个特大型金矿均具有多期多次成矿的特点,且具有由卡林型金矿向造山型金矿过渡的特征,成矿作用发生在碰撞造山阶段的挤压向伸展转换期,代表了一种新的成矿类型,建议定义为"卡林-造山复合型",特大型金矿成矿时间为127~216 Ma,成矿背景及成矿时间具有偏在性。
        The West Qinling metallogenic belt has good condition for forming large and superlarge gold deposits in China.In this paper,the geological and geochemical characteristics of four super-large deposits in West Qinling,Gansu Province have been analyzed,and they are compared with the ones of Karlin-type and orogenic gold deposits.The results show that these four superlarge gold deposits have many characteristics of multi-stage mineralization,and they have the transition characteristics of changing from Karlin-type gold deposit to orogenic gold deposit.The gold mineralization was occurred in the collision orogenic stage,which has been defined as"Carlin-orogenic compound type".The metallogenic age of these super-large gold deposits is 127~216 Ma,the metallogenic background and time show the metallogenic preferentiality.
引文
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