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| 粤北梅子窝钨锡矿床地质特征及其成矿年龄研究 | |
| 引用本文： | 杨晓君,付建明,马丽艳,李祥能,徐德明,魏君奇.粤北梅子窝钨锡矿床地质特征及其成矿年龄研究[J].大地构造与成矿学,2008,32(3). |
| 作者姓名： | 杨晓君 付建明 马丽艳 李祥能 徐德明 魏君奇 |
| 作者单位： | 1. 宜昌地质矿产研究所,湖北,宜昌,443003 2. 广东省地质调查院,广东,广州,510080 3. 西北大学,陕西,西安,710069 |
| 基金项目： | 国土资源部国土资源大调查项目 |
| 摘 要： | 对梅子窝钨锡矿床含矿石英脉进行了Rb-Sr同位素年代学研究,获得石英Rb-Sr等时线年龄为150±5Ma,与前人在同一地区获得的师姑山钨铋矿和石人嶂钨矿含矿石英脉中共生辉钼矿物Re-Os等时线年龄(154~159Ma)在实验误差范围内一致。研究表明,南岭中段始兴地区的钨矿、钨锡矿和钨铋矿的形成时代分布在150~160Ma之间,同属南岭地区中生代大规模成岩成矿作用高峰期的产物。 |
| 关 键 词： | 梅子窝钨锡矿 矿床地质特征 成矿年龄 始兴 粤北 |
GEOLOGICAL CHARACTERISTICS AND MINERALIZATION AGE OF MEIZIWO TUNGSTEN-TIN DEPOSIT IN SHIXING REGION, NORTHERN GUANGDONG |
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| YANG Xiaojun,FU Jianming,MA Liyan,LI Xiangneng,XU Deming,WEI Junqi.GEOLOGICAL CHARACTERISTICS AND MINERALIZATION AGE OF MEIZIWO TUNGSTEN-TIN DEPOSIT IN SHIXING REGION, NORTHERN GUANGDONG[J].Geotectonica et Metallogenia,2008,32(3). | |
| Authors: | YANG Xiaojun FU Jianming MA Liyan LI Xiangneng XU Deming WEI Junqi |
| Abstract: | Situated in the Shixing area, northern Guangdong Province and in the middle of the Nanling Mountains, the Meiziwo large tungsten-tin deposit shows a typical "five-storey" mineralization model. Magmatism in the orefield was very strong, and the tungsten-tin quartz veins were hosted in Cambrian-Ordovician epimetamorphic rocks and Indosinian granodiorites. Quartz Rb-Sr dating shows that the Meiziwo tungsten-tin quartz veins has an isochron age of 150±5Ma(95% confidence;MSWD=0.41),which accords with dating errors with those of molybdenite Re-Os ages(154~159Ma)carried out by predecessors of the shigushan W-Bi deposit and shirenzhang in the same region. It shows that the tungsten, tungsten-tin and tungsten-bismuth deposits in the Shixing area of middle Nanling Mountains were formed during 150~160Ma, belonging to products of the Mesozoic large-scale diagenetic mineralization peak in the Nanling region. |
| Keywords: | Meiziwo tungsten-tin deposit geological characteristics mineralization age Shixing northern Guangdong Province |
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