摘要
承德地区是我国重要的金属矿化集中区之一,已发现内生金属矿床、矿(化)点300余处,以金、铜、磁铁矿为主,钒钛磁铁矿储量居全国第二位。数十年来其内生金属矿产开发利用程度较高,很多矿山可采储量已近枯竭。为了进一步寻找隐伏矿、盲矿和难识别矿,利用高精度航空伽马能谱数据、航空磁法测量数据、中-高分辨率多尺度遥感影像、重力和化探等资料,采用多源信息集成技术,对承德地区的深部及浅部构造特征、隐伏岩体分布及矿化蚀变信息等进行了分析研究,运用层次分析法建立了热液型、矽卡岩型和斑岩型隐伏矿(盲矿)综合地质信息预测模型,圈定了12个成矿远景区,并优选了西大山、水泉子等18个找矿靶区,在其中4处已发现明显矿化现象,樱桃沟门钼铅锌含量达到工业品位,取得了较好的找矿效果。
The Chengde area, Hebei is one of important metal ore concentration areas in China. More than 300 endogenous ore deposits, or mineral occurrences have been found in this area. Gold, copper and magnetite are its major mineral resources. The Fe Ti-V reserves ranked second in China. For decades, these mineral resources have been fully exploited and utilized. At present, many of the recoverable reserves of mine have been depleted. In order to search for concealed ores, we used gamma-ray spectrometric survey data, magnetic survey data ,gravity survey data, medium-high spatial resolution remote sensing image and geochemical data to study the deep and shallow structures, the spatial distribution of concealed rock mass and mineralization alteration based on the multi information integration technology. The integrated geological information prediction models of porphyry, skarn and hydrothermal types were established using analytic hierarchy process for Chengde area. Using the model, we completed the prediction of the ore prospecting area and target selection. We have determined 12 prospective districts, and selected 18 ore-finding target areas such as Xidashan, Shuiquanzi in Chengde area. In 4 of these target areas , mineralization is found , and Mo-Pb-Zn has reached production grade in Yingtaogoumen.
出处
《地质科技情报》
CSCD
北大核心
2017年第5期173-180,共8页
Geological Science and Technology Information
基金
河北省地质勘查专项基金项目"河北省丰宁-平泉地区1:25万隐伏矿(盲矿)能谱及多种方法综合调查"(JGTZK317)
关键词
物化遥综合信息
构造解译
隐伏岩体
蚀变信.息
成矿预测
comprehensive information of geophysical survey, geochemical survey, and remote sensing image
tectonic interpretation
concealed rock mass
alteration information
mineral prospecting
