Reconstrucción paleoambiental de los últimos 35000 años en el Noroeste de la Península Ibéricala Laguna de Villaseca (León)
- G. Jalut 1
- J.M. Belet 1
- A. García de Celis 2
- J.M. Redondo Vega 3
- L. Bonnet 1
- B. Valero Garcés 4
- A. Moreno 4
- L. Villar Pérez 4
- M. Fontugne 5
- J.J. Dedoubat 1
- P. González Sampériz 4
- L. Santos Fidalgo 6
- J.R. Vidal Romanì 6
- 1 Laboratoire Dynamique de la Biodiversité, UMR 5172 UPS/CNRS, Toulouse, France
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2
Universidad de Valladolid
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3
Universidad de León
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- 4 Instituto Pirenaico de Ecologia-CSIC
- 5 Laboratoire des Sciences du Climat et de l’Environnement (CNRS/CEA)
- 6 Departamento de Xeologia, Facultade de Ciencias, Campus de Zapatera, A Coruña
ISSN: 1576-5172
Year of publication: 2004
Issue Title: VI CONGRESO GEOLÓGICO DE ESPAÑA, ZARAGOZA, 12-15 JULIO, 2004
Issue: 6
Pages: 105-108
Type: Article
More publications in: Geotemas (Madrid)
Abstract
The déglaciation history o f the Bradas de Robles, Lumajo and Sosas valleys (Sil River headwaters,León province, N W Spain) was reconstructed on the basis of detailed geomorphological studies ofglacier deposits and sedimentological and palynological analyses of the Villaseca Lake sedimentsequence. The basal 14C date o f the glacial lake deposit sequence indicates that, the maximumextent of the glaciers during the last glaciation was before 35,000 years B.P. and predated the maximum advances o f the Scandinavian Ice Sheet and some Alpine glaciers. The early déglaciation alsooccurred in the Cantabrian mountains and in the Pyrenees and it suggests different regionalresponses to climatic forcing in southern Europe. Sedimentological and palinological proxies fromthe Villaseca record show a high-frequency ciclicity during the Lateglacial that could correlate withthe known millenial-scale variability described in the north Atlantic marine records.