Redoximorphic Characteristics in the Colombian Andes

Abstract

It was stablished that deposited materials configured the present morphology of Fusagasuga. These were transported from the Upper region of Pasca, with characteristics of a diluvial flow clear; whose thickness varies up to 420 m., the Chinauta sector is the main quaternary deposit area for the late Pleistocene. The objective of the research focuses on the assessment of pedagogical evolution of the fan using as tracers of pedogenesis of the mineralogy of the sands and types of clay. The physicochemical characterization and the micromorphology of soils to determine which relationships may exist between Genesis, mineralogy, micromorphology and soil fertility in the diluvial fan of Fusagasugá. The studied soils belong to the following major taxonomic groups: Melanudands, Paleudults, Paleudalfs and Haplustalfs; differences in climate, parent materials and landforms as modal profiles ,each single sample was taken for chemical, physical and mineralogical analysis and selected in situ to undisturbed samples for micromorphological studies. The dynamics of this system are determined by the flows of matter and energy through hydrological processes (vertical movement in the soil), which depend on the alternation of contrasting climatic conditions high rainfall and dry periods, conditions very different from today. The oxidation-reduction processes, which define the conditions related with redoximorphic marked evidence of hydromorphism in soils clearly indicate that certain stages of its formation occurred in different environmental conditions.