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dc.contributor.authorRodríguez-Rodríguez, A.-
dc.contributor.authorTejedor-Salguero, M. L.-
dc.contributor.authorFernández-Caldas, E.-
dc.identifier.citationAnales de Edafología y Agrobiología 38(9-10): pp. 1625-1639 (1979)en_US
dc.description.abstractThe mineralogy of coarse and fine fractions of fersiallitic soils developed on volcanic-phonolitic ash, is studied. In the coarse fraction of the younger soils without argillic horizon, pyroxenes (augite) and amphiboles (hornblende) predominate. Olivines and micas are also present in lower quantities. In the evolutionated soils with argillic horizon, the coarse fraction show a high weathering degree. Iron oxides and hydroxides predominate. At the phonolitic levels, micas are present and traces of pyroxenes, amphiboles, titanite, etc. In the clay fraction, there is a mixture of 1:1 (hallosyte-metahallosyte, sometimes kaolinite) and 2:1 (open illite and montmorillonite) clay minerals. The ecological conditions and nature of parent material determine the prevailing kind of clay minerals.en_US
dc.format.extent291411 bytes-
dc.publisherCSIC - Instituto Nacional de Edafología y Agrobiología José María Albaredaen_US
dc.titleSuelos fersialíticos sobre cenizas volcánicas. II. Características mineralógicasen_US
dc.title.alternativeFersiallitic soils developed on volcanic ash. II. Mineralogical characteristicsen_US
dc.description.peerreviewedPeer revieweden_US
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