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Geoscience ›› 2018, Vol. 32 ›› Issue (05): 1074-1079.DOI: 10.19657/j.geoscience.1000-8527.2018.05.20

• Applied Geochemistry • Previous Articles     Next Articles

Significance of the Correction Parameters of Variation Coefficient in Regional Geological Evaluation

LIU Mingyi1,2(), ZHANG Jing1, MENG Guanglu1, HU Li3   

  1. 1. Xi’an Center of Geological Survey, China Geological Survey, Xi’an, Shaanxi 710054, China
    2. Department of Geology,Northwestern University,Xi’an, Shaanxi 710069, China
    3. Shaanxi Geological Exploration Institute of Geology and Mine Bureau, Xi’an, Shaanxi 710075,China
  • Received:2018-01-02 Revised:2018-05-23 Online:2018-10-10 Published:2018-11-04

Abstract:

By summarizing and studying the data of geochemical divisions in the west Tianshan of Xinjiang,China, the enrichment coefficients of 12 common ore-forming elements are calculated;the correction coefficients formula is put forward, and variation coefficients are reasonably corrected and sorted.Combining with the case deposit and mineralized points,the validity and applicability of correction coefficients is confirmed and the restrictive relationship between enrichment coefficients and variation coefficients in ore-forming process is summarized. By this way, it is possible to compare the ore conditions among different ore-forming elements and the applicability of geochemical parameters is broadened.Besides,the study improves the accuracy of geochemical evaluation methods in low exploration degree areas and provides scientific basis for geochemical evaluation.

Key words: correction parameter, variation coefficient, geochemical method, geochemical division, west Tianshan mountain of Xinjiang

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