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安徽贵池地区燕山期岩浆岩与铜金钼成矿关系:来自地质-地球化学-地球物理证据
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  • 英文篇名:Metallogenic Relationship Between Yanshanian Magmatic Rocks and Cu-Au-Mo Deposits in Guichi Area of Anhui:Evidences from Geological-geochemical-geophysical Characteristics
  • 作者:杨晓勇 ; 古黄玲 ; 严志忠 ; 吕启良 ; 段留安 ; 邓江洪 ; 朱永胜 ; 汪梅生 ; 赵德奎
  • 英文作者:YANG Xiao-yong;GU Huang-ling;YAN Zhi-zhong;LU Qi-liang;DUAN Liu-an;DENG Jiang-hong;ZHU Yong-sheng;WANG Mei-sheng;ZHAO De-kui;School of Earth and Space Sciences,University of Science and Technology of China;No.324 Geological Team,Anhui Bureau of Geology and Mineral Exploration;No.7 Gold Geological Party of Chinese People's Armed Police Force;
  • 关键词:成矿规律 ; 燕山期 ; 地球物理 ; 地球化学 ; 岩浆岩 ; 埃达克岩 ; 贵池地区 ; 长江中下游成矿带
  • 英文关键词:metallogenic regularity;;Yanshanian;;geophysics;;geochemistry;;magmatic rock;;adakite;;Guichi area;;Middle-lower Yangtze metallogenic belt
  • 中文刊名:XAGX
  • 英文刊名:Journal of Earth Sciences and Environment
  • 机构:中国科学技术大学地球和空间科学学院;安徽省地质矿产勘查局324地质队;中国人民武装警察部队黄金第七支队;
  • 出版日期:2016-07-15
  • 出版单位:地球科学与环境学报
  • 年:2016
  • 期:v.38;No.149
  • 基金:国家自然科学基金项目(41173057,41372087);; 安徽省国土资源科技项目(2014-K-04)
  • 语种:中文;
  • 页:XAGX201604002
  • 页数:20
  • CN:04
  • ISSN:61-1423/P
  • 分类号:23-42
摘要
安徽贵池地区是长江中下游成矿带的重要组成部分,区内金、银、铜、钼、硫等矿产资源丰富。系统研究了贵池地区地质、岩浆岩、地球化学-地球物理等特征与金银多金属矿床的成矿关系,对抛刀岭金矿、乌石金及多金属矿、朱家冲金矿、铜山铜矿等多金属矿进行详细分析,总结各岩体的地球化学属性,并对贵池地区斑岩型矿床进行了重点研究,分析其成矿专属性。将贵池地区成岩成矿时间划分为两期:第一期是140 Ma左右的岩浆活动及成矿作用,为早白垩世(燕山早期),主要与铜金矿床有关;第二期是125 Ma左右的岩浆活动及成矿作用,主要与钼(铜)矿床(化)有关。这两期岩浆活动及成矿作用包括高钾钙碱性、碱性两个成岩系列,岩石类型以中酸性—酸性花岗闪长岩、花岗岩为主,与长江中下游地区其他矿集区的成矿作用类似。将地质标志、地球物理标志以及地球化学标志结合,建立了该区找矿标志,从而有助于区内金、银(铅锌)及铜钼等金属矿成矿理论的丰富及成矿规律的认识,为区内找矿突破提供科学依据。
        Guichi area in Anhui is one of the most important Cu-Au deposits in the Middle-lower Yangtze metallogenic belt,which is rich in gold,silver,copper,molybdenum,sulfur and other mineral resources. The metallogenic relationships among the geology, magmatic rocks,geochemistry-geophysics,other geological features and Au-Ag polymetallic deposits were systematically studied; Paodaoling gold deposit, Wushi gold and polymetallic deposits,Zhujiachong gold deposit,Tongshan Cu-Au deposit were analyzed in detail,and the geochemicalcharacteristics of related magmatic rocks were summarized;furthermore,the porphyry types of deposits and the metallogenic specialization were analyzed particularly.Together with the published chronological data,the diagenetic mineralization in Guichi area can be divided into two phase.One is at~140Ma,the Early Cretaceous(Early Yanshanian),which is related to Cu-Au deposit;another is at~125 Ma,related to Mo(Cu)deposit(mineralization).The two phases include high-potassium calc-alkaline and alkaline series, mainly as intermediate acid-acid granodiorite and granite,similar to other ore clusters in the Middle-lower Yangtze metallogenic belt.Combined with geological,geophysical and geochemical information,the prospecting characteristics of ore exploration are established. Moreover,it is helpful to deepen the metallogenic theory of metals such as Au,Ag(Pb-Zn)and Cu-Mo,and the metallogenic regularities,providing a scientific basis for ore prospecting breakthrough in Guichi area.
引文
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