[A few aspects concerning the reddish brown soils of Romania]
1997
Parichi, M. | Taina, Ioana | Stanila, Anca Stanila | Mostoc, I. (Institutul de Cercetari pentru Pedologie si Agrochimie, Bucuresti (Romania)) | Staicu, Filuta (Sc. Generala, Calarasi Dolj (Romania))
There are many written reports concerning the formation and the distribution of reddish brown soils of Romania. In many cases it has been appreciated the fact that their presence would due to some specific condition, the stress being focused on the Mediterranean nuance of climate. Newer pedological studies show that these soils have a distribution area more restrained. In fact they appear within some narrow interfluves or marginal stripes of some well drained interfluves formed at their surface of loess or loessial deposits. A major role in their formation is that of soil climate expressed by a definitive hydric regime, probably an alterno-transpercolative one. The colour intensity seems to be influenced both by the hydration state of iron and of iron content of parent material. Iron hydroxide suffers a rapid dehydration under prolonged drought condition of soil, they turn into rusty sesquioxides of goethite type, hydrohematite and even of hematite type, inducing to the soil the reddish brown colour.
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