摘要
金山金矿床是中国西天山地区一个大型浅成低温热液型金矿,矿体产出主要受各种断裂构造控制。在多年勘探工作的基础上,通过野外填图和大量的勘探线剖面分析,笔者总结出断裂构造活动经历了成矿前、热液成矿期和成矿后3期。断裂控矿基本规律是:北西向断裂总体控制矿床的分布位置,南北向断裂晚期活动造成叠加富集成矿,北东向断裂早期伴随中酸性岩脉活动,成矿后活动造成矿体断开和升降,东西向-北西西断裂早期伴随火山喷发活动,成矿后活动切断南北向矿体。同时还总结了矿区的找矿评价标志。
The Jinshan gold deposit is a large-size epithermal deposit in Western Tianshan Mountains,whose gold ore bodies are mainly controlled by faults.The authors have reached the conclusion that faults evolved through three periods on the basis of recent years＇ field exploration and drilling section analysis,i.e.,pre-mineralization period,mineralization period and post-mineralazition period.The general regularity of fault control is as follows： the NW-trending faults controlled the locations of gold deposits,the NS-trending faults controlled the superimposition and enrichment of gold ore bodies during the activation in the late mineralization epoch,the NE-trending faults were associated with immediate-acidic dykes and intrusives during the early epoch and cut as well as lifted or lowered the ore bodies after the mineralization epoch,and the EW-trending faults cut the NS-trending ore bodies after the mineralization epoch.The authors have also summed up geological indicators for ore-prospecting.
出处
《中国地质》
CAS
CSCD
北大核心
2011年第1期109-118,共10页
Geology in China
基金
国家自然科学基金(40973035
40073019)
高等学校学科创新引智计划(B07011)
教育部长江学者和创新团队发展计划(IRT0755)项目资助
关键词
金山金矿床
浅成低温热液
勘探线剖面分析
断裂活动期
控矿规律
找矿标志
Jinshan gold deposit
epithermal deposit
analysis of drilling sections
fault activation period
tectonic control
prospecting indicator
