%0 Journal Article
%4 dpi.inpe.br/plutao/2012/11.28.16.43.26
%2 dpi.inpe.br/plutao/2012/11.28.16.43.27
%@issn 0102-261X
%F lattes: 8310549809410820 1 HartwigCabo:2012:DELADE
%T Detection of lateritic deposits using tm landsat images in order to support the caraj´as railway duplication project, north and northeastern brazil
%D 2012
%A Hartwig, Marcos Eduardo,
%A Caboclo, Fabio Di Giaimo,
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@electronicmailaddress meh@dsr.inpe.br
%B Revista Brasileira de Geofísica
%V 30
%N 1
%P 41-49
%K duricrust, TM Landsat, Crosta technique, construction material, Carajrás Railway.
%X The aim of this study was to map iron duricrust in order to subsidize the Caraj´as Railway duplication project, in a tract of approximately 200 km, located between the states of Pará and Maranhão, north and northeast regions of Brazil. The vegetation is constituted of crop areas and grassland. The methodology is based on the Cr´osta technique applied to six and four bands of the TM Landsat 5. The results showed that the application of the technique to four bands was more effective to detect iron oxides. In the center-north to northeast of the study area, where a wide dissected plateau occurs, potential iron oxide concentrations are observed, which are coincident with the main duricrust registered occurrences and roughly with the lateritic deposits located in the geological map.
%@language pt
%U http://sys2.sbgf.org.br/revista/index.php/rbgf/article/view/67