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| 东北地区浅成低温热液矿床的地质特征和构造背景 | |
| 引用本文： | 祁进平,陈衍景,Franco PIRAJNO.东北地区浅成低温热液矿床的地质特征和构造背景[J].矿物岩石,2005,25(2):47-59. |
| 作者姓名： | 祁进平 陈衍景 Franco PIRAJNO |
| 作者单位： | 1. 北京大学造山带与地壳演化开放实验室,北京,100871 2. 北京大学造山带与地壳演化开放实验室,北京,100871;中国科学院地球化学研究所,贵州,贵阳,550002 3. Geological Survey of Western Australia, 100 Plain Street, East Perth, WA 6004,Australia |
| 基金项目： | 自然科学基金(40373007和40352003)，科学院百人计划项目，教育部跨世纪人才基金项目 |
| 摘 要： | 通过中国东北地区浅戍低温热液矿床的综合特征研究，将矿床的分布划分为德尔布干、呼玛、小兴安岭和吉东4个矿集区，根据其矿床地质、地球化学特征初步确定成矿流体主要来自大气降水，部分混有岩浆水；戍矿物质主要来自赋矿围岩和戍矿岩浆-流体系统；多数矿床形成于中低温、中浅成环境，个别矿床成矿温度高、深度大，显示了斑岩型或造山型与浅成低温溶液型成矿系统之间的连续性；厘定大规模成岩成矿时间为130Ma左右，构造环境是古亚洲洋闭合后陆陆碰撞过程的挤压-伸展转变体制，并以矿集区尺度的CMF模式解释了浅成低温热液矿床岩浆-流体系统的发育机制。 |
| 关 键 词： | 浅成低温热液矿床 地质特征 地球化学 构造背景 中国东北 |
| 文章编号： | 1001-6872(2005)02-0047-13 |
| 修稿时间： | 2004年12月30 |
GEOLOGICAL CHARACTERISTICS AND TECTONIC SETTING OF THE EPITHERMAL DEPOSITS IN THE NORTHEAST CHINA |
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| QI Jin-ping,CHEN Yan-jing,Franco PIRAJNO.GEOLOGICAL CHARACTERISTICS AND TECTONIC SETTING OF THE EPITHERMAL DEPOSITS IN THE NORTHEAST CHINA[J].Journal of Mineralogy and Petrology,2005,25(2):47-59. | |
| Authors: | QI Jin-ping CHEN Yan-jing Franco PIRAJNO |
| Institution: | QI Jin-ping~1,CHEN Yan-jing~ |
| Abstract: | This paper documents epithermal deposits in the northeast China and proposes a geological map showing their spatial distribution.The map outlines four ore-concentrated districts of Derbugan,Huma,Lesser Hingan and Eastern Jilin.In this paper we also summarize the geological and geochemical characteristics of the epithermal deposits and preliminarily get a series of understandings including:the ore-forming fluid-systems were dominated by meteoric water,occasionally with input of magmatic fluid; ore components were mainly sourced from the host-rocks and metallogenic magma-fluid systems; most deposits were formed in epithermal system,and a few in epithermal-to-mesothermal conditions,suggesting a continuum between porphyry/mesothermal and epithermal systems; large-scale metallogenesis and magmatism occurred at ca.130 Ma,coeval with the tectonic transition from continental-collisional compression to extension.Finally,we interpret the development of the metallogenic magma-fluid systems in NE China using the CMF model at orogen-scale. |
| Keywords: | epithermal deposit geological characteristics geochemistry tectonic setting Northeast China |
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