| 安徽青阳高家塝钨钼矿床成岩成矿时代及其地质意义 |
| |
| 引用本文： | 肖鑫,周涛发,袁峰,范羽,张达玉,刘东周,黄伟平,陈雪锋.安徽青阳高家塝钨钼矿床成岩成矿时代及其地质意义[J].岩石学报,2017,33(3):859-872. |
| |
| 作者姓名： | 肖鑫 周涛发 袁峰 范羽 张达玉 刘东周 黄伟平 陈雪锋 |
| |
| 作者单位： | 合肥工业大学资源与环境工程学院, 合肥 230009,合肥工业大学资源与环境工程学院, 合肥 230009,合肥工业大学资源与环境工程学院, 合肥 230009,合肥工业大学资源与环境工程学院, 合肥 230009,合肥工业大学资源与环境工程学院, 合肥 230009,华东冶金地质勘查局812地质队, 铜陵 244008,华东冶金地质勘查局812地质队, 铜陵 244008,合肥工业大学资源与环境工程学院, 合肥 230009 |
| |
| 基金项目： | 本文受国家自然科学基金项目（41320104003）、中国地质调查局地质调查工作项目（1212011220243、1212011121115）和新世纪优秀人才支持计划项目（NCET100324）联合资助. |
| |
| 摘 要： | 高家塝钨钼矿床赋存于皖南青阳-九华山复式岩体北东缘接触带附近,是安徽省目前探明的规模最大的层控矽卡岩型白钨矿矿床。本文采用LA-ICP-MS方法对高家塝矿区花岗闪长岩和细粒花岗闪长斑岩的锆石进行U-Pb同位素定年,得到年龄分别为144.9±1.2Ma和145±2.0Ma。通过辉钼矿Re-Os等时线定年方法,得到高家塝矿床成矿时代为146.1±4.8Ma。皖南地区燕山期发育两期钨钼成矿作用,分别为146~136Ma和134~128Ma,类似于长江中下游成矿带,分别形成于挤压向拉张转换区和岩石圈快速拆沉减薄的两种构造背景。通过与钦杭成矿带典型钨钼矿床的对比发现,皖南地区钨钼成矿事件集中于燕山期,而钦杭成矿带钨锡成矿事件具有多阶段性。皖南地区同样发育大量与钦杭成矿带相似的花岗岩类岩浆岩,然而到目前为止皖南地区发现的钨锡矿床主要与中酸性花岗闪长岩类密切相关,仅少数矿床与钦杭成矿带成矿岩浆岩(均为高分异的花岗岩类)相似,同时皖南地区锡矿床找矿的突破,表明了皖南地区具有寻找与花岗岩类相关的钨钼矿床和锡矿床的潜力。
|
| 关 键 词： | 高家塝钨钼矿床 成岩成矿时代 两期钨钼成矿事件 钨钼矿床和锡矿床成矿潜力 |
| 收稿时间： | 2016/6/28 0:00:00 |
| 修稿时间： | 2016/10/25 0:00:00 |
The geochronology of the Qingyang Gaojiabang tungsten-molybdenum deposit and its geological significance, Anhui Province, East China |
| |
| XIAO Xin,ZHOU TaoF,YUAN Feng,FAN Yu,ZHANG DaYu,LIU DongZhou,HUANG WeiPing and CHEN XueFeng.The geochronology of the Qingyang Gaojiabang tungsten-molybdenum deposit and its geological significance, Anhui Province, East China[J].Acta Petrologica Sinica,2017,33(3):859-872. |
| |
| Authors: | XIAO Xin ZHOU TaoF YUAN Feng FAN Yu ZHANG DaYu LIU DongZhou HUANG WeiPing and CHEN XueFeng |
| |
| Institution: | School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,No. 812 Geological Team of East China Metallurgical Bureau of Geology and Exploration, Tongling 244008, China,No. 812 Geological Team of East China Metallurgical Bureau of Geology and Exploration, Tongling 244008, China and School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China |
| |
| Abstract: | The Gaojiabang tungsten deposit is the largest stratabound skarn tungsten-molybdenum deposit located in Anhui Province, which is hosted in the north-east connect zone of Qingyang-Jiuhua complex batholith. On the basis of geological and petrographic studies, we collect the primary types of magmatic rocks (granodiorite and fine crystalline granodiorite), LA-ICP-MS zircon U-Pb data show that the age of the magmatic rocks is 144.9±1.2Ma and 145±2Ma. We have conducted molybdenite Re-Os to precisely constrain the timing of mineralization in the deposit. The results show that the mineralization occurred at 146.1±4.8Ma. There are two events of ore-forming periods in south of Anhui are obtained:146~136Ma and 134~128Ma, respectively formed in the compression-extension tectonic conversion and lithosphere rapid delamination thinning tectonic setting. By comparing with Qinhang Metallogenic Belt, we find the tungsten deposit the south of Anhui formed in the Yanshanian epoch, but the same deposit in Qinhang Metallogenic Belt formed in different stage. The granite magmatic rocks also development in the south Anhui, which is similar to Qinhang metallogenic belt. However, so far the tungsten-molybdenum deposit found in the south of Anhui are closely related with the granodrite, only a small amount of tungsten-molybdenum deposit associate with the highly evolved granites. At the same time, the tin ore prospecting has been found in this area indicates that the south of Anhui has the potential to search of tungsten molybdenum deposit and tin deposit, which is related with the highly evolved granites. |
| |
| Keywords: | Gaojiabang tungsten deposit Ages of magmatism and mineralization Two stage of tungsten-molybdenum mineralization Prospecting potential of tungsten molybdenum deposit and tin deposit |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《岩石学报》浏览原始摘要信息 |
| 点击此处可从《岩石学报》下载免费的PDF全文 |
|
