Geoquímica de suelos y su relación con la litología de la zona Alamala-Catamayo.

Abstract

Abstract: In the Alamala-Catamayo area during 2017, soil sampling was carried out every 1000 meters for the purpose of determining geochemical concentrations. The proposal For this investigation it consisted of sampling every 250 meters. in which Data were taken from 196 sampling points, determining types of lithologies at each point. such as Andesitic Porphyry, Weathered Andesite, Silicate Andesite, Granodiorite, Conglomerate, Limolites. As quantitative variables, 17 chemical elements were obtained with a varied concentration of Al2O3, SiO2, S, K2O, CaO, Fe2O3, Cu, Zn, Rb, Sr, Ba, Ce, W, Pb, As, Mg and Na. With the two types of variables, we have a predictive map according to the results carried out through Maching Learning, in which a matrix of correlation, principal component analysis and discriminant analysis using the tree decision with the Chaid algorithm with an accuracy of 99.09%, in which a point determined in the field as a Porphyry Andesite becomes Weathered Andesite with the multivariate analysis.