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Revista de la Asociación Geológica Argentina
Print version ISSN 0004-4822
Abstract
SUVIRES, G.M.. Distribution of soils in relation to relief and neotectonic activity within the tectonic depression of the Tulum valley, in the south-eastern sector of San Juan province. Rev. Asoc. Geol. Argent. [online]. 2004, vol.59, n.3, pp.376-384. ISSN 0004-4822.
Soil-landscape-neotectonic relationships were studied in the south-eastern sector of San Juan province, Argentina, (31°30' S, 68°29' W). Three different area types were distinguished: A) alluvial fans, B) transitional area between A and C, and C) alluvial plain of San Juan river. As a result of the different landscape-relief features and parent materials, the three areas have different soil associations within the complexes, El Salado, Médano de Oro and Ramón Franco, respectively. Areas A and B are characterized by entisol order soils sequences, whereas area C has aridisol order soil. The neotectonic activity in the region has contributed favourably to the formation soils in the Médano de Oro Complex, of the Aquents suborder.
Keywords : Soils; Geomorphology; Parent material; Neotectonic activity.