【引用本文】 黄新鹏, . 福建霞浦大湾钼铍矿区碱长花岗岩LA-ICP-MS锆石U-Pb测年研究[J]. 岩矿测试, 2018, 37(5): 572-579. doi: 10.15898/j.cnki.11-2131/td.201710160165
HUANG Xin-peng . LA-ICP-MS Zircon U-Pb Dating of Alkali-Feldspar Granites from the Dawan Mo-Beryllium Deposit, Xiapu, Fujian Province[J]. Rock and Mineral Analysis, 2018, 37(5): 572-579. doi: 10.15898/j.cnki.11-2131/td.201710160165

福建霞浦大湾钼铍矿区碱长花岗岩LA-ICP-MS锆石U-Pb测年研究

福建省地质调查研究院, 福建 福州 350013

收稿日期: 2017-10-16  修回日期: 2018-04-26 

基金项目: 中国地质调查局地质调查工作项目“华南重点矿集区稀有稀散和稀土矿产调查”(DD20160056)

作者简介: 黄新鹏,工程师,主要从事矿产地质勘查和研究工作。E-mail:353698794@qq.com。。

LA-ICP-MS Zircon U-Pb Dating of Alkali-Feldspar Granites from the Dawan Mo-Beryllium Deposit, Xiapu, Fujian Province

Institute of Geological Survey of Fujian Province, Fuzhou 350013, China

Received Date: 2017-10-16
Revised Date: 2018-04-26

摘要:福建霞浦大湾钼铍矿床产于火山岩区,但成矿作用可能与岩浆活动和裂隙构造关系密切。为查清矿区隐伏的钠长石化碱长花岗岩与钼铍矿成矿作用之间的关系,本文运用激光剥蚀电感耦合等离子体质谱法(LA-ICP-MS)对碱长花岗岩进行锆石U-Pb测年研究,获得年龄结果为93.0±0.6 Ma,与矿区的辉钼矿成矿年龄(92.2±1.3 Ma)一致,表明碱长花岗岩与钼铍矿成矿作用时空上具有密切的成因联系,岩浆活动可能为矿区钼铍矿的形成提供了成矿物质和成矿流体。结合区域上的成岩成矿年代学数据,认为福建省燕山期岩浆活动时代与钼铍矿成矿时代都具有从西向东逐渐变新的时空分布规律,钼铍矿的成矿地质构造背景为燕山期华南岩石圈伸展环境。

关键词: 大湾钼铍矿, 碱长花岗岩, 成岩时代, 时空联系, 地质背景

LA-ICP-MS Zircon U-Pb Dating of Alkali-Feldspar Granites from the Dawan Mo-Beryllium Deposit, Xiapu, Fujian Province

KEY WORDS: Dawan Mo-Be deposit, alkali feldspar granite, diagenetic age, space-time connection, geological background

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福建霞浦大湾钼铍矿区碱长花岗岩LA-ICP-MS锆石U-Pb测年研究

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