| 胶东金矿成矿流体性质及其地质意义 |
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| 引用本文： | 赵宏光,孙景贵,凌洪飞,沈昆,胡受奚.胶东金矿成矿流体性质及其地质意义[J].地质与勘探,2005,41(5):27-33. |
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| 作者姓名： | 赵宏光 孙景贵 凌洪飞 沈昆 胡受奚 |
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| 作者单位： | 吉林大学地球科学学院,长春,130061;吉林大学地球科学学院,长春,130061;南京大学内生金属矿床成矿机制研究国家重点实验室,南京,210093;南京大学内生金属矿床成矿机制研究国家重点实验室,南京,210093;山东省地质矿产局地质科学实验研究院,济南,250013 |
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| 摘 要： | 胶东地区重要金矿床是以硫化物石英脉为主的和以硫化物蚀变岩为主的两类,对它们的成矿流体组分和温压条件等方面的研究表明,其含矿流体均起源于下地壳,为玄武岩浆底热提供热( 部分流体)作用形成;其含矿流体上升演化成矿过程表现:以硫化物石英脉为主的金矿床是在相对稳定的环境下含矿流体降温降压结晶分异成矿,而以硫化物蚀变岩为主的金矿床则是流体发生沸腾作用成矿;成矿过程的温-压(能量)演化轨迹显示,大型矿床具有完整的P-T演化轨迹或具有沸腾特征,相对小的矿床一般不具完整的P-T轨迹.这项研究对深入认识胶东金矿成因及成矿规律具有重要的价值.
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| 关 键 词： | 流体性质 热动力源 成矿规律 胶东金矿床 |
| 文章编号： | 0495-5331(2005)05-0027-07 |
| 收稿时间： | 2004-10-29 |
| 修稿时间： | 2005-03-21 |
CHARACTERISTICS AND GEOLOGICAL SIGNIFICANCE OF ORE- FORMING FLUIDS IN THE JIAODONG GOLD DEPOSITS |
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| ZHAO Hong-guang,SUN Jing-gui,LING Hong-fei,SHEN Kun,HU Shou-xi.CHARACTERISTICS AND GEOLOGICAL SIGNIFICANCE OF ORE- FORMING FLUIDS IN THE JIAODONG GOLD DEPOSITS[J].Geology and Prospecting,2005,41(5):27-33. |
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| Authors: | ZHAO Hong-guang SUN Jing-gui LING Hong-fei SHEN Kun HU Shou-xi |
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| Institution: | 1. College of Earth Sciences, Jilin University, Changchun 130061 ; 2. State Key Laboratory for Mineral Deposit Research, Nanjing 210093 ; 3. Shandong Institute of Geological Sciences, Shandong Bureau of Geology and Mineral Resources, Jinan 250013 |
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| Abstract: | Gold deposits in the Jiaodong peninsular can be divided into sulfide quartz vein type and alteration rock type. Research results from ore-forming fluids and temperature-pressure measurements show that ore-bearing fluids are formed from lower crust, and heat and parts of fluids are contributed by basaltic magma underplating. The evolution process of ore-forming fluids can be described as following: gold deposits predominated by sulfide quartz veins were formed in relative stable environment by fluid crystallization differentiation; whereas alteration rocks predominated gold deposits were formed after fluid boiling. The temperature-pressure evolution path of mineralization process indicates that large deposits have relative complete P-T evolution path or fluid boiling, but relatively little deposits have not complete P-T path. This conclusion is very important for further research of genesis and probing into mineralizing regularity of gold deposits in the Jiaodong peninsular. |
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| Keywords: | fluid character heat dynamic resource mineralizing regularity Jiaodong gold deposits |
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