Abstract
Summary The soils of “rana” surfaces related to the “Sierra de las Villuercas” and the “Sierra de Altamira” (Western Spain) were studied with reference to vegetation cover and geomorphic position. These soils were highly weathered, with kaolinite dominant in the clay fraction and almost no weatherable minerals in the sand fraction. Iron oxides were segregated in some of the horizons giving a formation of “pseudoplinthite”. This high degree of weathering and the patina of their quartzite stones are comparable to those of soils developed on the oldest ran˜a surfaces studied in Central Spain. The soils classified as Palehumults and Palexerults are given, tentatively, a Middle-Upper Pliocene age.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
