TY  - SER
AU  - Neufeldt, Henry
AU  - Schneider, Marilena de Oliveira
AU  - Zech, Wolfgang
TI  - Oxisol development along a compound catena of the Araguari river, Central Brazil
AV  - S 623 .S977 
KW  - Brazil
KW  - Soil genetics
KW  - Palaeosols
KW  - Brasil
KW  - Ferralsols
KW  - Génesis del suelo
KW  - Ferralsoles
KW  - Paleosoles
KW  - CIAT Externos
KW  - Book chapters
KW  - Capítulos de libros
KW  - Clasificación y génesis del suelo
KW  - Soil classification and genesis
KW  - Serial book chapters
N2  - Several Oxisols, containing different parental materials, were studied along a compound catena of the Araguari River, central Brazil. Their development, age, and genetic features were analyzed by morphological, chemical, and mineralogical methods. Results indicated continuously decreasing weathering from tableland (also known as chapada) to valley floor. Soils on the chapada probably developed during middle and upper Tertiary, and are considered relict. Their different types of quartz sand clearly show that they derive from preweathered sediments of distinct locations, suggesting a polygenetic origin that may reach as far back as the Cretaceous. Soils on the pediment, inserted into the slope toward the Araguari River, developed in situ and may have been formed at the beginning of Pleistocene but still indicate ongoing ferralitization. A ferralitized paleosol that developed in situ near the river's present base level is apparently from late Pleistocene. Recent pedological processes are characterized by strong leaching and hillwash
UR  - http://ciat-library.ciat.cgiar.org/Articulos_Ciat/biblioteca/Sustainable_land_management_for_the_oxis.pdf#page=19
ER  -