朱沛云,胡斌,赖峰,杨立志,骆珊.河南省前河金矿矿床成因及成矿模式探讨[J].地质找矿论丛,2014,29(2):199-205
河南省前河金矿矿床成因及成矿模式探讨
Discussion on genesis and metallogenic model of Qianhe gold deposit in Songxian county, Henan province
投稿时间:2013-05-27  修订日期:2013-10-15
DOI:10.6053/j.issn.1001-1412.2014.02.006
中文关键词:  前河金矿  马超营断裂带  A型俯冲  矿床成因  成矿模式  河南省
英文关键词:Qianhe gold dewposit  Machaoying fault  A-type subduction  genesis of the deposit  metallogenic model  Henan province
基金项目:
作者单位
朱沛云 中南大学地球科学与信息物理学院, 有色金属成矿预测教育部重点实验室, 长沙 410083 
胡斌 中南大学地球科学与信息物理学院, 有色金属成矿预测教育部重点实验室, 长沙 410083 
赖峰 中南大学地球科学与信息物理学院, 有色金属成矿预测教育部重点实验室, 长沙 410083 
杨立志 中南大学地球科学与信息物理学院, 有色金属成矿预测教育部重点实验室, 长沙 410083 
骆珊 中南大学地球科学与信息物理学院, 有色金属成矿预测教育部重点实验室, 长沙 410083 
摘要点击次数: 2063
全文下载次数: 1686
中文摘要:
      前河金矿床地处华北地块南缘的熊耳地体南端,是典型的构造蚀变岩型金矿。文章在综合前人大量研究成果资料基础上,从成矿物质的源、运、储三个方面分析了矿床形成过程。流体包裹体数据反映该矿床为低盐度中低温热液矿床,成矿流体以岩浆水为主,并有大气降水的参与;铅、硫、氢氧稳定同位素组成反映,成矿物质来源以深部幔源为主;马超营深大断裂及其次级断裂构成该矿床重要的导矿与容矿构造。其成矿模式可表述为中生代华北地块与扬子地块碰撞造山过程中,熊耳地体南侧硅铝层沿马超营断裂A型俯冲至熊耳地体之下,致使熊耳地体下方的温压等物化条件发生改变,从而形成了前河地区的岩浆-流体系统,并在有利的构造部位成矿。
英文摘要:
      The Qianhe gold deposit is a typical altered cataclastic rock gold deposit located in the Xiong'er terrane, southern margin of the North China massif. Based on the former researches this paper analyzes the metallogeny of the deposit in aspects of the ore material source, transportation and storage. The fluid inclusions data shows that it is a epithermal-mesothermal gold deposit with low salinity and the ore fluid is dominated by magmatic water but incorporated with meteoric water. Pb, S, H, O isotopic data show main derivation of the ore materials from depth of mantle. Machaoying fault and the secondary faults are both the conductive and host structures. The metallogenic model is that during collision oregenesis between the Yangze plate and Norh China continental plate in Mesozoic A-type subduction of the southern side of the Xiong'er terrane's silica-alumina layer under north side of Xionger terrain occurred along the Machaoying fault resulting in change of the temperature and pressure and other physicochemical conditions and Qianhe magma-fluid system and the gold deposit at favorable position.
查看全文  查看/发表评论  下载PDF阅读器
关闭