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有色金属(矿山部分):2019,71(2):39-43
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金鸿山铜钼矿床赋矿岩体锆石 LA-ICP-MS U-Pb年龄及意义
(1.(1. 西安西北有色物化探总队有限公司,西安 710068;2. 贵州有色金属和核工业地质勘查局物化探总队,贵州都匀 558000))
Zircon LA-ICP-MS U-Pb age of Jinhongshan porphyryassociated with Cu-Mo mineralization and its geological implication
(1.(1. Xi'an Northwest Nonferrous Geophysical-Geochemical Corps Ltd., Xi'an 710068, China;2. Geophysical Nonferrous Metals and Geochemical Survey, Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou, Duyun Guizhou 558000, China))
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中文摘要: 金鸿山铜钼矿床位于秦祁昆中央造山系的阿尔金构造带(Ⅱ)和柴达木—西秦岭微地块,柴达木地块与阿尔金构造带交界处,矿化主要产于石英闪长岩中。本文分析了赋矿岩体中锆石U-Pb年龄,赋矿岩体锆石Th/U比值为0.22~0.70,平均0.57,阴极发光(CL)具良好韵律环带,显示了岩浆锆石特征;赋矿岩体LA-ICP-MS U-Pb年龄为(475.1±2.3)Ma,属中奥陶世,据岩体中锆石U-Pb年龄,结合区内构造演化,我们认为含矿岩体岩浆活动与板块俯冲—碰撞的构造作用诱发的阿尔金走滑断裂活动有关。
Abstract:Jinhongshan copper molybdenum beds is located in Qinling-Qilian-Kulun central mountains of the altun tectonic belt (Ⅱ) and qaidam-west Qinling Micro plot, at the junction of qaidam block and aljin tectonic belt, mineralization mainly occurs in quartz diorite. In this paper, the U-Pb age of zircon in ore-bearing rocks was analyzed. The Th/U ratio of ore body zircons was between 0.22~0.70. Cathode luminescence (CL) had a good rhythm band, showing the characteristics of magmatic zircons. The age of LA-ICP-MS U-Pb was (475.4±2.3) Ma, belonging to middle ordovician. According to the U-Pb age of zircon in the rock mass, the tectonic evolution in the binding zone, it can believe that the magmatic activity of ore-bearing rock mass is related to the aljin strike-slip fault induced by the tectonic action of subduction-collision.
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基金项目:青海省茫崖镇大通沟南山地区矿产远景调查项目(1212011140094)
Author NameAffiliation
LIU Jun1 (1. Xi'an Northwest Nonferrous Geophysical-Geochemical Corps Ltd., Xi'an 710068, China
2. Geophysical Nonferrous Metals and Geochemical Survey, Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou, Duyun Guizhou 558000, China) 
YUAN Haichao1 (1. Xi'an Northwest Nonferrous Geophysical-Geochemical Corps Ltd., Xi'an 710068, China
2. Geophysical Nonferrous Metals and Geochemical Survey, Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou, Duyun Guizhou 558000, China) 
GUO Wenbo1 (1. Xi'an Northwest Nonferrous Geophysical-Geochemical Corps Ltd., Xi'an 710068, China
2. Geophysical Nonferrous Metals and Geochemical Survey, Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou, Duyun Guizhou 558000, China) 
LIU Min1 (1. Xi'an Northwest Nonferrous Geophysical-Geochemical Corps Ltd., Xi'an 710068, China
2. Geophysical Nonferrous Metals and Geochemical Survey, Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou, Duyun Guizhou 558000, China) 
HUANG Bo2 (1. Xi'an Northwest Nonferrous Geophysical-Geochemical Corps Ltd., Xi'an 710068, China
2. Geophysical Nonferrous Metals and Geochemical Survey, Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou, Duyun Guizhou 558000, China) 
LI Daji2 (1. Xi'an Northwest Nonferrous Geophysical-Geochemical Corps Ltd., Xi'an 710068, China
2. Geophysical Nonferrous Metals and Geochemical Survey, Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou, Duyun Guizhou 558000, China) 
SHI Mingke2 (1. Xi'an Northwest Nonferrous Geophysical-Geochemical Corps Ltd., Xi'an 710068, China
2. Geophysical Nonferrous Metals and Geochemical Survey, Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou, Duyun Guizhou 558000, China) 
引用文本:
刘 军1,袁海潮1,郭文波1,刘 敏1,黄 波2,李大吉2,石明科2.金鸿山铜钼矿床赋矿岩体锆石 LA-ICP-MS U-Pb年龄及意义[J].有色金属(矿山部分),2019,71(2):39-43.
LIU Jun1,YUAN Haichao1,GUO Wenbo1,LIU Min1,HUANG Bo2,LI Daji2,SHI Mingke2.Zircon LA-ICP-MS U-Pb age of Jinhongshan porphyryassociated with Cu-Mo mineralization and its geological implication[J].NONFERROUS METALS(Mining Section),2019,71(2):39-43.

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