Geochemical Anomaly Extraction Using Factor Analysis Method Based on Mapgis Digital Elevation Model
详细信息
- 责任者：Shi Wenjie (Faculty of Earth Resources ; China University of Geosciences ; Wuhan 430074 ; China) ; Wei Junhao
- 刊名：Geophysical and Geochemical Exploration
- 出版年：2012
- 卷期：36(1)
- 关键词：地球化学异常 ; geochemical anomaly ; 数字高程模型 ; digital elevation models ; 西北地区 ; North West China
- 页码：p.103-108
- 图表：5 illus., 2 tables, 28 refs.
- 分类号：1500
- 出版序号：20130462
- issnNo：ISSN1000-8918
- isbnNo：CN11-1906/P
摘要
This paper analyzed the 1∶50 000 rock-scrap data obtained from Northwest China,using the R-mode factor analysis method.Geochemical subdivisions were carried out with the extracted five representative factors from the data.Then, the authors decided factor F3(Cu-Zn-Ag) which was related to mineralization,in comparison with regional mineralization characteristics,geological conditions and mineralization in the study area.Geochemical anomalies were extracted with the factor analysis method based on MAPGIS digital elevation model.The result suggests that the anomalies are well consistent with 76% Cu mineralizations,raising the efficiency by 10% in comparison with the single element copper geochemical anomalies.
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