摘要
在青海都兰—乌兰地区应用化探与遥感信息进行综合找矿预测,主要是运用迭代法、聚类分析和主因子分析等方法来确定地球化学背景值和快速提取化探异常信息,采用主成分分析、掩膜和图像彩色分割等方法直接从TM遥感图像中提取与金属矿化有关的蚀变信息。在对区域成矿地质条件的综合研究基础上,通过对化探和遥感异常信息与成矿的相关分析,圈定找矿靶区,取得了一定的实际应用效果。
The geochemical exploration and remote sensing information are applied to study ore prediction in Dulan-Wulan area, Qinghai province. In this paper, the methods of iteration and principal component analysis are mainly employed to determine the geochemical background value and to quickly extract geochemical anomaly. With the help of image processing methods such as principle component analysis, mask and image color segmentation, alteration information related with metal mineralization is directly extracted from TM remote sensing image. Based on the integrative study of the regional metallogenic geological condition, ore-prospecting targets are delineated by means of the correlation analysis between the metallogenic and the geochemical anomaly and alteration information.
出处
《地质与勘探》
CAS
CSCD
北大核心
2003年第6期42-45,共4页
Geology and Exploration
基金
国家"十五"科技攻关项目(编号:2001BA609A04)资助。
关键词
化探
遥感信息
找矿预测
地质异常
geological anomaly, geochemical anomaly information, remote-sensing alteration information , ore-prospecting prognosis
