基于晕状特征提取的化探异常信息识别及其在成矿预测中的应用

Abstract

Abstract: Geochemical anomaly identification using conventional methods are always based on the comparison of the observed value and a threshold. The conventional methods may be not suitable for geochemical data analysis because they are presented according to the classical theory of statistics and designed for normally distributed data, however, geochemical data is not follow normal distribution. Furthermore, most of the conventional methods will produced a threshold for the whole study area and pay no attention to the situation that the geological environment may be different everywhere. In this paper, a new method(named Halo feature extraction)is proposed to explore the distribution pattern of trace elements of gold deposits in the study area. The result shows that the Halo feature extraction method will identify gold deposits-related geochemical anomalies effectively when it was used to the geochemical data from Karamay and from east Xinjiang. The Halo feature extraction method is recommended to be used for geochemical anomaly identification and mineral exploration.

Key words: Halo feature extraction, geochemical anomaly, mineral exploration, GIS

CLC Number:

P627

ZHOU Shu-guang, ZHOU Ke-Fa, WANG Jin-Lin, WANG Wei, DING Jian-Li. Identifying of geochemical anomalies according to the Halo pattern of trace elements for mineral exploration[J]., 2015, 38(4): 763-769.

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Identifying of geochemical anomalies according to the Halo pattern of trace elements for mineral exploration

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