Study of dispersion of radioactive elements uranium, thorium and potassium in the region Hashtrood using airborne radiometric data

Subject Areas :

Ali  Nouhi ¹ (باشگاه پژوهشگران جوان و نخبگان، واحد لاهیجان، دانشگاه آزاد اسلامی، لاهیجان، ایران)
Afshar  Zia Zarifi ² (استادیار گروه مهندسی معدن، عضو هیئت علمی دانشگاه آزاد اسلامی واحد لاهیجان)

Received: 2016-12-05 Accepted : 2016-12-05 Published : 2016-02-20

Keywords: radioactive elements, fractal method, Correlation coefficients, Ternary map,

Abstract :

Nowadays geophysical airborne data have high importance for radioactive mineral exploration. In fact these data is major base for radioactive elements exploration. In this study by airborne radiometric data interpretation collected from Hashtrod  1:100000 sheet  no. 5464 situated in north Iran expectation areas for uranium, thorium and potassium were recognized. Firstly, statistical parameters were calculated and radiometric elements' histograms of the area were drawn using conventional statistics. Moreover, promising maps were drawn based on the dispersion around the mean. Then, concentration- area full logarithm plots were drawn by using fractal method and digit data collected in the area. Next, plots associated uranium, thorium and potassium anomalous areas were prepared after step separation of different environments (background, threshold, anomaly) had been done based on C-A angular coefficient curve. The correlation coefficients between These elements were determined after some tables of data scattering were drawn. The image Ternary radioelement map color space GRB earns in the region and finally to process the images and extract the most important forms of uranium anomalies identified hot area and the introduction of promising deposits of radioactive minerals indexes were examined for discovery proceedings