Asunción Julián Andrés

Geomorphological map of the Alta Ribagorza (Central Pyrenees, Spain)

Abstract Please click here to download the map associated with this article. The 1:50,000 geomorphological map of the Pyrenean Alta Ribagorza is presented here. The Spanish Alta Ribargoza is located in the northern sector of the provinces of Huesca and Lérida, and includes the highest summit of the Pyrenean mountains (Pico de Aneto, 3404 m a.s.l.). The mapped sector measures approximate 700 km2. The basic source of information for the completion of the map was derived from the photointerpretation of two series of aerial photos (the 1981 “Pirineos Sur” ight, scale 1:30,000, black and white; and the 2006 PNOA ight, scale 1:5,000, colour), and field work. The map-legend includes 44 elements classified into six main sections, covering lithology and structure, processes and landforms of glacial, periglacial, nival, hillslope, karstic and uvial origin, and conventional symbols. The variety of the identi-ed processes and landforms demonstrates the geomorphological richness of this mid-latitude, high-mountain area, and the map constitutes a useful tool for land management.

Influencia del control altitudinal en la distribución de unidades morfodinámicas degradativas y agradativas en áreas de montaña: el circo del Taillon (valle de Gavarnie, Pirineo central francés)

En este trabajo se comprueba, de una forma cuantitativa, la existencia de un control altitudinal en el reparto espacial de las unidades morfodinamicas identificadas en el circo glaciar del taillon. La metodologia utilizada, que parte de la cartografia y posterior planimetrado de las distintas subunidades degradativas y agradativas definidas, permite establecer el grado de madurez del sector montanoso estudiado con notable precision.