
handle: 10261/36628
[ES] Se etudia la composición mineralógica y la evolución de la fracción arcilla de nueve suelos forestales de la Sierra de Gata, desarrollados sobre granitos, esquistos o granitos con aportaciones de equistos. La fracción <2p está constituida por caolín, ilita, clorita, interesvatificados ilita-vermiculita hidroxialuminosa, vermiculita hidroxialuminosa y gibsita. Ilita y dorita deben ser heredados y la transformación parcial de los mismos en medio ácido ha dado lugar a los minerales hidroxialuminosos. Caolín y gihsita son neoformados. La presencia y distribución a lo largo del perfil de los minerales bidroxialuminosos y de caolín y gibsita están relacionadas con la naturaleza de la vegetación y de la materia orgánica.
[EN] The mineralogical composition and evolution of thc clay fraction of nine forest soils belonging to the Sima de Gata have been studied. These soils are developed on granites, schists, or granites associated with schists. The <2p fraction consists of kaolin illite, chlorite, illite-aluminium hydroxy vermiculite intentratification, aluminum hydroxy vermiculite and gibbsite. Illite and chlorite must be inherited and they have partially solved in acid conditions towards aluminium hydroxy minerals. Kaolin and gibbsite arc neoformed. The presence and distribution of aluminum hydroxy, kaolin and gibbsite minerals along the profile are related to the nature of the vegetation and organic matter.
Peer reviewed
12 p.
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