摘要
通过对大瑶山区古里脑和龙头山金矿床地层、岩浆岩含矿性的分析,并进行断裂构造作用多期性的分析和岩浆期后断裂成矿作用的讨论,认为该区深部地层和岩体中的金元素在次火山—斑岩期后断裂构造热液的作用下逐步向上叠加、富集成矿;矿体与岩浆岩体在空间上具有密切的关系;构造-热液作用导致次火山岩、斑岩体或周围地层产生破碎,并使成矿热液沿裂隙充填和再充填而形成金矿体,区内凡构成工业富集的富矿体和含金石英脉或破碎带都与多期次活动的构造-热液作用有关。因此,多期活动的构造-热液作用在大瑶山区具有非常重要的找矿意义。
Based upon analysis on ore bearing characters of strata and magma rocks in Gulinao and Longtoushan gold deposit related to the postmagmatic faulting of sub-volcanic rock and porphyry in Dayaoshan region, multiperiodic characteristics of faulting, and discussion on mineralization from fault- hydrothermal fluid after magmatism, it is considered that gold element inside deeper strata and magma rocks are upward enriched by the faulting to form gold ore deposits. The ores are closely related to the magma rocks in space. Multi-phase faulting caused breakage of the sub-volcanic rocks and porphyry or their country rocks, and their fissures to be filled and refilled by gold mineralization. Therefore, all of the industrial ores, gold-bearing quartz vein or broken zone is closely related to the poly-stage faulting which is very significant for searching for gold deposit.
出处
《矿产与地质》
2006年第3期214-218,共5页
Mineral Resources and Geology
基金
广西自然科学基金项目"桂东南火山期后构造-热液作用与金矿成矿作用研究"(编号:桂科回0342025)资助
关键词
金矿床
成矿作用
断裂构造
多期性
次火山岩
斑岩
古里脑
龙头山
大瑶山
gold deposit, faulted structure, multiperiodic characteristics, subvolcanic rock, porphyry,Gulinao, Longtoushan, Dayaoshan
作者简介
朱桂田（1955-）,男,教授级高级工程师,主要从事矿床地质研究工作.guitianzhu@163.com.
