摘要
本文通过对西藏冈底斯成矿带东段约2×104km2区域的地质、物探、化探、遥感资料的收集和分析,在区域地质条件和成矿规律研究的基础上,建立了该研究区斑岩型铜矿床的成矿模型,确定了成矿预测变量。并且,利用基于GIS的MRAS系统采用特征分析法进行成矿远景区预测,然后在此基础上利用数量化理论I方法进行资源潜力评价。结果显示,圈定的成矿预测区域包含有大部分已知大中型铜矿,并与该区域地质理论分析相吻合。资源潜力估算的结果表明,冈底斯东段仍具有良好的斑岩型铜矿找矿潜力。
Based on a complete collection and analysis of geological,ore deposits,remote sensing data,and geophysical and geochemical data of eastern Gangdise in Tibet about 200,000km2,we investigated the geologic conditions and metallogenic rules and established a porphyry copper deposit metallogenic model for this area.And then the indexes of metallogenic prognosis are summarized.Using the characteristic analysis method of mineral resource assessment system（MRAS）based on the geographic information system（GIS）,the metallogenic prospect has been predicted for porphyry copper polymetallic deposits.Following that,the copper reserves were estimated by the quantification theory typeⅠmethod.The result of metallogenic prognosis shows that the delimitaed area of metallogenic prognosis includes mostly known large and medium-sized copper deposits and is in accordance well with the geological analysis.The result of copper reserves estimated shows that there stil1 exists a great potential of porphyry copper deposits in the eastern section of Gangdise.
出处
《地质与勘探》
CAS
CSCD
北大核心
2011年第1期113-120,共8页
Geology and Exploration
基金
中国冶金地质总局科研项目"西藏冈底斯东段铜多金属资源评价与新方法技术研究"资助
关键词
GIS
多元信息
成矿预测
冈底斯东段
资源量预测
铜多金属
Geographic Information System
multi-source information
metallogenic prognosis
eastern section of Gandise
resource prediction
copper polymetallic
