Writers : Moradzadeh, Ali; Ariafar, Ahmad; Shiva, Mohammad
Refference : 9th symposium of geological society of Iran, Tehran, Teacher Training university
Publishing Year : 1384

Abstract :
R-mode factor analysis is one of the multivariate methods that is used for interpretation of stream sediment geochemical data. In this method the relationship among M variables with P uncorrelated factors is investigated.
In this study, 175 geochemical samples of the Khusf region, which is located in 35 km west of Birjand city, are analyzed for 20 elements to define their distribution. To achieve the goal, first the correlation coefficient matrix computed and the eigenvalues extracted. According to the eigenvalues grater than and cumulative variance more than 75percent, three factors have been extracted and then factor-loading matrix has been rotated. With regard to the minimum factor loadings of 0.8 the main three factors (Zn, Ni, Cu, Fe, Mn), (Cr, Sc, Co, V Ti), and (Pb, As, Sr, Cd) were resulted. At last, using the calculated factor scores, their maps have been prepared and the anomalous areas were then detected.
Subject List : , Geochemistry