Since the last century, the resultant layers sequence of rock decomposition is studied in Brazil. For the great importance that present in Geotechnical Engineering, these alteration profiles are objects of study of some authors, since then, mainly in countries of tropical climate, as Brazil. The different weathering types and degrees that occur in a residual soil profile affect the geotechnical behavior of the resultant materials. The knowledge detailed of its gênesis can contribute for the better agreement of its geomecanical behavior. The present dissertation aims at to contribute for a definition of bio- physical-chemicalmineralogical and micromorphological characterization that can serve as indicating of the evolution of weathering degree of a residual soil profile. This study is a part of required inquiries for development of a residual soil behavior model where it is possible to include effect of weathering degree. This investigation are being effected in the project PRONEX-Rio intitled Geotechnic Applied to the Evaluation, Prevention and Remediation of Ambient Problems, in development in the Nucleus of Environmental Geotechnic of DEC/PUC-Rio and it is in the research line of Environmental Geotechnic of the Sector DEC/PUC-Rio.