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| 浙江临安千亩田钨铍矿区花岗岩锆石LA-ICP-MS U-Pb年龄及对区域找矿的意义 | |
| 引用本文： | 黄国成,王登红,吴小勇.浙江临安千亩田钨铍矿区花岗岩锆石LA-ICP-MS U-Pb年龄及对区域找矿的意义[J].大地构造与成矿学,2012,36(3):392-398. |
| 作者姓名： | 黄国成 王登红 吴小勇 |
| 作者单位： | 1. 中国地质大学(北京)地球科学与资源学院,北京100083;浙江省地质调查院,浙江杭州311203 2. 国土资源部成矿作用与资源评价重点实验室,中国地质科学院矿产资源研究所,北京100037 3. 浙江省地质调查院,浙江杭州,311203 |
| 基金项目： | 全国危机矿山接替资源找矿项目“桂东-粤西地区铅锌金等矿床成矿规律总结研究”，中国地质大调查项目“我国重要矿产和区域成矿规律研究”，深部探测技术与实验专项“南岭成矿带地壳岩浆系统结构探测实验”(项目 |
| 摘 要： | 位于浙江临安的千亩田钨铍矿是浙江省内已知规模最大的一个钨铍共生矿床,其形成与顺溪岩体关系密切,已有成岩年龄数据较为零乱。本次研究采集了千亩田钨铍矿区新鲜花岗岩样品,通过LA-ICP-MS锆石U-Pb测年技术,获得了206Pb/238U加权平均年龄分别为125.5±1.1Ma、123.5±2.3Ma,表明顺溪花岗岩体为燕山晚期早阶段(早白垩世)的产物。结合周边地区近年来地质找矿的新进展,预测浙西-赣东北-皖南一带将成为新的钨矿找矿远景区。 |
| 关 键 词： | 顺溪花岗岩 LA-ICP-MS锆石U-Pb测年 千亩田钨铍矿 燕山晚期 |
LA-ICP-MS Zircon U-Pb Dating of the Granite from the Qianmutian Tungsten-Beryllium Mine in Lin'an, Zhejiang Province and its Significance in Regional Exploration |
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| HUANG Guocheng , WANG Denghong , WU Xiaoyong.LA-ICP-MS Zircon U-Pb Dating of the Granite from the Qianmutian Tungsten-Beryllium Mine in Lin'an, Zhejiang Province and its Significance in Regional Exploration[J].Geotectonica et Metallogenia,2012,36(3):392-398. | |
| Authors: | HUANG Guocheng WANG Denghong WU Xiaoyong |
| Institution: | 1.School of the Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China;2.Zhejiang Institute of Geological Survey,Hangzhou 311203,Zhejiang,China;3.MLR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China) |
| Abstract: | The Qianmutian tungsten-beryllium deposit is the largest W-Be deposit discovered in Zhejiang province,which is associated with the Shunxi granite.The published ages of the granite are messy.We analyzed the zircons from 2 pieces of fresh granite samples from the Qianmutian Tungsten-beryllium deposit using LA-ICP-MS method.The weighted average 206Pb/238U ages for zircons from the two samples are 125.5±1.1 Ma and 123.5±2.3 Ma,respectively,suggesting the granite was formed in the early stage of late Yenshanian Period(early Cretaceous).Combined with the new advance of geological prospecting in the peripheral areas,western Zhejiang-northeastern Jiangxi-southern Anhui may well be considered as a new area for W-deposit prospecting. |
| Keywords: | Shunxi granite LA-ICP-MS zircon U-Pb Qianmutian W-Be deposit late Yenshanian |
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