西藏格玛铅锌矿区地质特征及综合找矿模式  

Geolgoical Characteristics and Integrated Prospecting Mode in Gema Pb-Zn Mining Area,Tibet

作　　者：蔡仲明 杨骁 楚卢凯 杨瑞西 岳国利[2,4] Cai Zhongming;Yang Xiao;Chu Lukai;Yang Ruixi;Yue Guoli(Henan Institute of Geosciences,Zhengzhou 450001,China;Henan Key Laboratory for Metallogenic Geological Process of Metallic Minerals and Resource Utilization,Zhengzhou 450001,China;Henan Aero Geophysical Survey and Remote Sensing Center,Zhengzhou 450053,China;Henan Institute of Geological Survey,Zhengzhou 450001,China)

机构地区：[1]河南省地质科学研究所,河南郑州450001 [2]河南省金属矿产成矿地质过程与资源利用重点实验室,河南郑州450001 [3]河南省航空物探遥感中心,河南郑州450053 [4]河南省地质调查院,河南郑州450001

出　　处：《金属矿山》2020年第7期122-129,共8页Metal Mine

基　　金：中国地质调查局地质调查项目(编号:1212010818063)。

摘　　要：河南省地质调查院在国土资源大调查中,在西藏念青唐古拉山地区发现并评价了拉屋铜锌多金属矿、尤卡朗银铅矿、亚贵拉铅锌矿等一大批铜铅锌多金属矿(区)点。为扩大找矿成果,对格玛村附近1∶5万水系沉积物测量10-乙1铅锌银多金属异常进行了查证。通过土壤化探、磁法测量缩小找矿靶区;地质路线填图确定(推断)矿化体位置;激电中梯对隐伏矿体进行追索;地质槽探工程揭露矿体;垂直于矿化带布设激电测深剖面,确定极化体空间分布形态;最后进行地质钻孔验证,在研究区找出了一个中型铅锌银多金属矿床。总结了在自然条件恶劣的古露—尤卡乡铅锌银成矿带内,发现、评价铅锌银多金属矿床的找矿模式,对于类似区域找矿勘探研究具有一定的参考价值。In the great investigation of territorial resources,a large number of copper,lead and zinc polymetallic ore(area)points,such as Lawu copper-zinc polymetallic ore,Youqialang silver-lead ore and Yaguila lead-zinc ore etc..werefound and evaluated by Henan Institute of Geological Survey in Nyenchen Tanglha Mountain Area in Tibet.In order to ex-pand the prospecting achievements of the area,the 10-乙1 Pb-Zn-Ag polymetallic anomaly of 1∶500 00 stream sedimentssurvey around Gema Village was verified.The prospecting target area was reduced by soil geochemical and magnetic survey;the location of mineralized bodies was delineated(inferred)by geological route mapping;the hidden orebodies were trackedby IP intermediate gradient measurement method;the orebodies were revealed by exploration trenching engineering;the spa-tial distribution of polarized body was determined by arranging IP sounding section perpendicular to the mineralizationzones;finally,a medium-sized Pb-Zn polymetallic deposit was found in the study area by geological drilling verificaiton.Theprospecting mode of finding and evaluating Pb-Zn polymetallic deposit in Gulu-Youkaxiang Pb-Zn-Ag metallogenic belt withadverse natural conditions was summarized.It has certain reference value for the prospecting and exploraiton study in similarareas.

关 键 词：铅锌银多金属矿 水系沉积物测量 槽探 激电中梯 激电测深 找矿靶区 

分 类 号：P611[天文地球—矿床学] P612[天文地球—地质学]