Tropical soils are recognized by hold lateritic mineral produced by tropical weathering on different rocks, and affected by landforms and paleoclimatic changes. The bioclimatic imbalance as a development of properties of hydromorphy, can lead structural, chemical and mineralogical changes in old soil covers, and create a suitable environment to concentrate aluminous clays, which have good potential to drag out. This process occurs in the flat plateau of Triângulo Mineiro whose hydromorphic soils developed in topographic depression on surface of plateaus, have shown iron depleted soil matrix with distinct contents of aluminous-clay material, used as refractory. However, the process that carries out the enrichment or lateral losses (enrichment content vary from 70 to 20% of Al, from upstream to downstream) are not yet realized, which justifies the advancement of research in the area.
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