Caracterización morfométrica y tipológica de conos aluviales en La Rioja y en el Pirineo aragonés
ISSN: 0213-4497
Datum der Publikation: 1996
Titel der Ausgabe: IV Reunión Nacional de Geomorfología
Nummer: 21
Seiten: 721-736
Art: Artikel
Andere Publikationen in: Cadernos do Laboratorio Xeolóxico de Laxe: Revista de xeoloxía galega e do hercínico peninsular
Zusammenfassung
This paper shows a model of distribution of alluvial fans in the Oja and Najerilla valleys, in the northwestern extreme of the Iberian System and the Ebro Depresion (The Rioja), and the Gallego valley, draining the eocen flysch band in the Central Pyrenees. The distribution was carried out with five groups of alluvial fans classified by Cluster Analysis, according to the area and slope, and basins lithology. Aftherwards, the residuals analysis between alluvial fans area and slope and basins area made it possible to establish a typology and to characterize these alluvial fans which are significantly different and at the same time more representative in different sectors of the study areas. The main differences come from aggradattion/dissection in the proximal and distal areas and the incision stage of alluvial fans; both changing according to the basins lithology.