| 徐 明.大厂矿田铜坑-长坡锡石硫化物矿床铅
同位素特征及其地质意义[J].地质与勘探,2012,48(2):352-358 |
| 大厂矿田铜坑-长坡锡石硫化物矿床铅
同位素特征及其地质意义 |
| Lead Isotopic Characteristics of the Tongke-Changpo Cassiterite SulfideDeposit in the Dachang Oilfield, Guangxi Province and Their Geological Significance |
| 投稿时间：2010-11-25 修订日期：2011-07-06 |
| DOI： |
| 中文关键词: 铅同位素组成 矿石铅来源 矿床成因 铜坑-长坡矿床 大厂矿田 |
| 英文关键词: lead isotopic compositions, source of ore lead isotope, ore genesis, Tongkeng-Changpo deposit,Dachang ore field |
| 基金项目:广西大厂锡石硫化物型锡矿科学基地研究项目(编号200911007-13)、桂东-粤西地区典型矿床矿田构造研究项目(编号
20089946-3)联合资助 |
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| 中文摘要: |
| [摘 要] 铜坑 - 长坡锡石硫化物矿床是大厂矿田中规模最大、最具有代表性的矿床,本文通过该矿床大量铅同位素资料的系统分析,运用全方位对比法和△β- △ч示踪法对矿床成矿物质来源进行了研究,不管是层状矿体、细脉带矿体还是大脉带矿体,其成矿物质主体具有统一来源,主要来自岩浆岩、泥盆系及基底物质,但也有少量的幔源物质参与。铜坑-长坡矿床的形成可能经历了两个阶段,即:早期的基性岩脉阶段和晚期的燕山期岩体阶段。 |
| 英文摘要: |
| Abstract:The Tongkeng-Changpo cassiterite sulfide deposit is the largest and most representative deposit in the Dachang orefield, Guangxi Province.
This paper made a systematic analysis on characteristics of ore lead isotopes from this deposit and studies the source of mineralization materials of the deposit coupled using the whole-orientation comparison method and △β- △чtrace method.The result indicates that the ore-forming materials are mainly
from magma rocks, Devonian strata and the basement, and partly from mantle.Mineralization process of the deposit has undergone two periods, i.e., the
early mineralization stage related to basic magmatic activity (mantle source), and the later stage related to acidic magmatic activity (mixing source). |
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