|
|||||
|
|
| 河南大河铜矿床成矿时代探讨 | |
| 引用本文： | 蔡锦辉,张燕挥,徐遂勤,李铭.河南大河铜矿床成矿时代探讨[J].华南地质与矿产,2010(3):19-24. |
| 作者姓名： | 蔡锦辉 张燕挥 徐遂勤 李铭 |
| 作者单位： | 1. 武汉地质矿产研究所,武汉,430205 2. 中国地质科学院地质力学研究所,北京,100081 3. 河南省第一地质勘查院,河南,南阳,473056 |
| 基金项目： | 全国危机矿山项目办"河南省南阳大河铜矿矿产预测"项目 |
| 摘 要： | 大河铜矿自发现到矿山闭坑,矿床成因和成矿时代就存在很大的争议。为扩展找矿思路,寻求该矿区找矿突破,本文在充分整理大河铜矿的矿产资料情况下,开展了矿区野外地质调查和研究工作,测定了煌斑岩中花岗岩团块内的锆石,通过单颗粒锆石测定获得U-Pb加权平均年龄为(144±1)Ma。大河铜矿区下部有未出露的燕山期花岗岩证明该区存在燕山期岩浆岩活动,认为大河铜矿矿床形成于燕山期;提出大河铜矿区深部存在找矿希望。 |
| 关 键 词： | 成矿地质特征 煌斑岩 花岗岩团块 成矿时代 大河铜矿床 河南 |
On the Metallogenic Age of Dahe Copper Deposit, Tongbai Arae, Henan Province |
|
| CAI Jin-hui,ZHANG Yan-hui,XU Sui-qin,LI Ming.On the Metallogenic Age of Dahe Copper Deposit, Tongbai Arae, Henan Province[J].Geology and Mineral Resources of South China,2010(3):19-24. | |
| Authors: | CAI Jin-hui ZHANG Yan-hui XU Sui-qin LI Ming |
| Institution: | 1.Wuhan Institute of Geology and Mineral Resources,Wuhan 430205,China;2.Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China;3.No.1 Geological Exploration Institute of Henan Province,Nanyang 473000,China ) |
| Abstract: | The genesis and mineralization age of Dahe copper deposit,Henan province,is controversial from it＇s found to the mine closure.According to investigating the field geology and existing materials,this paper deals with the formation age of Dahe deposit.The U-Pb ages of zircons from granite enclave of lamprophyre in the ore district are measured and yields weighted average age of（144±1）Ma.This age indicates the existing of Yanshanian granite,which may be the source of Dahe copper deposit,and brings the great prospecting potential in the depth of Dahe deposit. |
| Keywords: | ore deposit geology characteristics lamprophyre granite enclave metallogenic age Tongbai area Henan province |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |