陕西镇旬地区金龙山式微细浸染型金矿床成矿远景预测  

Prospect Appraisal of the Jinlongshan Style Micrograined Disseminated Gold Deposits in Zhen’an-Xunyang Area,Shaanxi,China

作　　者：郭立宏 朱红周 李静 袁旭东 李新林 陈艳 

机构地区：[1]陕西省地质调查中心,西安710016

出　　处：《吉林大学学报（地球科学版）》2013年第4期1254-1261,1291,共9页Journal of Jilin University：Earth Science Edition

基　　金：中国地质调查局地质大调查项目(12120107338)

摘　　要：为了促进综合信息在资源远景分析和矿产勘查中的应用,以陕西镇旬地区金龙山式微细浸染型金矿床为例,通过典型矿床成矿规律研究,分析总结得出:本区含矿地层主要为中泥盆统古道岭组(D2g)、上泥盆统南羊山组(D3n)、星红铺组(D3x)和下石炭统袁家沟组(C1y);细碎屑岩是本区的主要赋矿岩石,碳酸盐岩次之;金矿体的分布、发育与断裂构造关系十分密切;Au、As、Hg、Sb组合直接指示金矿床的存在,其中Au、As异常吻合最好。将以上成矿控制因素作为区域预测要素,采用要素叠加分析法圈定成矿预测单元,在MARS软件中应用特征分析法对其进行优选,最终确定了6个金矿成矿远景区。The authors take the Jinlongshan style micrograined disseminated gold deposit in Zhen’an-Xunyang in Shaanxi as example and makes a through study of the metallogenic regularities of typical deposits.It is concluded that： the ore-bearing strata are mainly the Devonian Gudaoling Group（D2g）,Upper Devonian Nanyangshan Group（D3n）,Xinghongpu Group（D3x） and Lower Carboniferous Yuanjiagou Group（C1y）;the clastic rocks are the main,and the carbonates are minor ore-bearing rocks;the distribution and development of gold ore bodies are closely related to the faults structures;Au,As,Hg,Sb combination is direct indication of gold deposits and Au and As abnormalities are most closely fitted.Take above ore constrains as regional prognosis factors,use overlay analysis method to delineate metallogenic prediction units and employ characteristic analysis for optimization in the MARS software application,six gold metallogenetic prospective tracts are finally outlined.

关 键 词：镇旬地区 金龙山式 金矿床 成矿远景 

分 类 号：P624.6[天文地球—地质矿产勘探] P618.51[天文地球—地质学]