Evaluation of soil geochemistry data of Canca Area (Gümüşhane, Turkey) by means of Inverse Distance Weighting (IDW) and Kriging methods-preliminary findings

Yıl 2019, Cilt: 158 Sayı: 158, 195 - 216, 25.04.2019

Alaaddin Vural

https://doi.org/10.19111/bulletinofmre.430531

Öz

The purpose of this
study is to assess soil geochemical data of the Canca alteration area (Gümüşhane-
Turkey) using statistical methods and investigate potential gold mineralizations
of the area. With this purpose, 288 soil samples were collected and analyzed
for gold and associated pathfinder elements. The concentrations ranged (Au and Hg:
in μg/kg, others in mg/kg) between 0,68-19,20; 0,02-28,97; 2-314; 7-857; 2,1-394;
4-199,5; 0,59-49,29; 5-89; 0,04-37; 0,52-16,30; 1,25-91,9 for Au, Ag, Cu, Pb, Zn,
As, Sb, Bi, Mo, Sn and Hg respectively. According to Sperman’s rho correlation coefficients,
although not very strong, correlation was observed between Cu and Au; Zn and Cu;
Sb and Pb and As; Mo and Pb and As and Sb; Sn and As; Sb and Mo. The threshold
values of the elements were obtained by median+2 the median absolute deviation.
The prediction maps of the elements were formed by using the Inverse Distance Weighting
and Kriging methods. According to prediction maps; especially in the western part
of the study area and also related to tectonic lines, elemental enrichments, (gold
and silver) were determined. Therefore, it is suggested to give importance to the
west of the area in exploration drilling, geophysics, etc. Since the element prediction
maps produced by the Inverse Distance Weighting method has higher resolution in
anomaly contrast, it is suggested that maps produced with this method can preferably
be used to give an idea at first sight in soil geochemistry studies.

Anahtar Kelimeler

Soil geochemistry, Gümüşhane, inverse distance weighting (IDW), kriging

Kaynakça

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