Características químicas e mineralogia de solos perférricos da Serra Sul de Carajás

摘要: The Serra Sul of Carajas located in the SE State Para Amazon is most extensive plateau mountain landscape de Carajas, possessing various ecosystems developed on ironstone formations with a high degree conservation. Were analyzing 13 representative soils from iron band formation. main types are: Petric Plinthosols, Oxisols and Haplic Organosols, strong association different vegetation pattern. Soils are generally acid, dystrophic, Fe level (30-50%) very low P levels, except areas affected by biogenic contributions (fauna). In crystalline forms predominated over less forms, or amorphous. isomorphic substitution for Al was variable, higher values goethite that hematite. Hematite predominates well-drained soil, opposite lowland soils. Among microelements, Mn showed highest levels variability between goethite, hematite maghemita predominant minerals clay fraction these We concluded Fe-rich parent material pedobioclimatic conditions drivers control diversity soil characteristics studied. All mineral fractions degradation crust.