| 广东庞西垌地区地球化学组合异常识别与提取 |
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| 关键词:geochemical composite anomaly factor-kriging model fractal filtering techniques Pangxidong stream sediments |
| 基金项目:广东庞西垌地区矿产远景调查(编号: 1212010071012); 国家青年科学基金(编号: 41004051); 全国矿产资源潜力评价项目(编号: 国土资源部资[2007]038-01-18) |
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| The Recognition and Extraction of Geochemical Composite Anomalies: A Case Study of Pangxidong Area |
| In order to study the spatial combination distribution of geochemical elements, the authors used factor-kriging method to construct a combinational model for identifying combinations of geochemical anomalies, and employed fractal filtering technique to strengthen weak anomalies and separate anomaly and background. The composite anomaly model was combined with fractal filtering techniques for processing and analyzing geochemical data obtained from 1:50000 stream sediment geochemical survey at Pangxidong in the southern segment of Qinzhou-Hangzhou juncture zone, with the purpose of looking for ore-related anomalies and finding unknown deposits. The results show that composite anomalies from combinational variables are consistent with known mineralization of the study area. Although the composite anomalies can not fully reflect local anomalies, high anomaly areas can indicate direction for exploring unknown deposits and, on such a basis, anomaly and background separated from composite anomalies by using fractal filtering technique can provide guidance for further work. |
| ZHANG Yan,ZHOU Yong-zhang,WANG Zheng-hai,HUANG Rui,LÜ Wen-chao,WANG Lin-feng,LIANG Jin,ZENG Chang-yu.2011.The Recognition and Extraction of Geochemical Composite Anomalies: A Case Study of Pangxidong Area[J].Acta Geoscientica Sinica,32(5):533-540. |
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