Cronología de formas periglaciares relictas conservadas en la Cordillera Cantábrica central

  1. L. Rodríguez-Rodríguez 1
  2. V. Rinterknecht 2
  3. D. Bourlès 3
  4. G. Aumaître 3
  5. K. Keddadouche 3
  1. 1 Universidad de Cantabria
    info

    Universidad de Cantabria

    Santander, España

    ROR https://ror.org/046ffzj20

  2. 2 Centre National de la Recherche Scientifique
    info

    Centre National de la Recherche Scientifique

    París, Francia

    ROR https://ror.org/02feahw73

  3. 3 Centre Européen de Recherche et d’Enseignement des Géosciences de l’Environnement
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Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Año de publicación: 2021

Título del ejemplar: X Congreso Geológico de España

Número: 18

Páginas: 273

Tipo: Artículo

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Otras publicaciones en: Geotemas (Madrid)

Resumen

The central Cantabrian Mountains present numerous relict periglacial landforms, among which rock glaciers outstand (Gon- zález-Villar et al., 2011). Although some authors have tentatively dated their activity between 25–21 and 14–11 ka (Oliva et al., 2016), there are scarce absolute ages directly obtained from these records (Rodríguez-Rodríguez et al., 2017). Here we present 34 new surface exposure ages based on the in situ-produced cosmogenic nuclide 10Be that evidence the stabilization age of the frontal ridge or toe of six periglacial landforms. The studied landforms cover the altitudinal range 1466-1975 m a.s.l. and are linked to reliefs which maximum elevation ranges from 1884 m a.s.l. (Corteguerón peak) to 2141 m a.s.l. (Peña Agujas peak), developed in both north and south-facing slopes. Resultant ages (ca. 16–13 ka) are consistent with previous analysis carried out in the Monasterio and Porma valleys and provide a deeper understanding on past periglacial activity of this mountain setting.

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