西南石油大学学报(自然科学版)

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Analysis of the Spatial Characteristics of Au Elements and Comparative#br# Studies on Anomaly Extraction Method

ZHANG Nannan1,2*, ZHOU Kefa1,2, CHENG Wanwen1,2   

  1. 1. Xinjiang Research Center for Mineral Resources,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi,Xiangjiang
    830011,China;2. Xinjiang Key Laboratory of Mineral Resources and Digital Geology,Urumqi,Xiangjiang 830011,China
  • Online:2016-06-01 Published:2016-06-01

Abstract:

Extraction of information in geochemical anomalies has long been geologists′concerns. In this paper,we use the
collected 1:20 millions of geochemical data of the western Junggar area to analyze spatial variability of the Au elements,and
interpolate it. By using the C-A model of fractal and the traditional method,we obtain different anomaly threshold values. We
compare the method of extracting geochemical anomalies information based on the traditional method and fractal technique.
The result proves that the spatial distribution of Au elements is characteristic of isotropic with medium correlation;the fractal
method is better than the traditional one. Fractal technology and known gold deposits agree better,as it can avoid the omission
of abnormal information. The result has certain guiding significance for further prospection works in this area.

Key words: Au elements, spatial variability, C A model, geochemical anomalies, anomaly extraction

CLC Number: