Localização e descrição de várias jazidas de solos lateríticos do Norte e Nordeste do Brasil.

Abstract

This study deals with the location and description of several deposits of lateritic soils in the North and Northeast of Brazil. This description refers to its geological, pedological and climatological characteristics. Several deposits were selected based on a theoretical study and visits to several selected areas. THE geological, pedological and climatological description was made using the DNPM maps and publications (1973,1974, 1975,1976), SUDENE (1972,1974) and ONER (1976,1977). The results obtained allowed to conclude that the deposits belong to 14 geological formations, peculiar to each region with a higher frequency of lateritic soils originated from the "Itapecuru" and Barreiras "formations (54.03%) and a predominance of 4btb, 4cth and 4d th (92.7%). It was also concluded that the same type of soil has to rig various geological formations and various types of soils have the same geological origin.