RT Journal Article
T1 Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees
A1 Fernandes, M.
A1 Oliva, M.
A1 Vieira, G.
A1 Palacios Estremera, David
A1 Fernández Fernández, José María
A1 Garcia‐Oteyza, J.
A1 Schimmelpfennig, I.
A1 Team, Aster
A1 Antoniades, D.
AB The Upper Garonne Basin included the largest glacial system in the Pyrenees during the last glacial cycle. Within the long-term glacial retreat during Termination-1 (T-1), glacier fluctuations left geomorphic evidence in the area. However, the chronology of T-1 glacial oscillations on the northern slopes of the Central Pyrenees is still poorly constrained. Here, we introduce new geomorphological observations and a 12-sample dataset of 10Be cosmic-ray exposure ages from the Ruda Valley. This U-shaped valley, surrounded by peaks exceeding 2800 m a.s.l., includes a sequence of moraines and polished surfaces that enabled a reconstruction of the chronology of the last deglaciation. Following the maximum ice extent, warmer conditions prevailing at ~15–14 ka, during the Bølling–Allerød (B–A) Interstadial, favoured glacial retreat in the Ruda Valley. Within the B–A, glaciers experienced two phases of advance/stillstand with moraine formation at 13.5 and 13.0 ka. During the early Younger Dryas (YD), glacial retreat exposed the highest surfaces of the Saboredo Cirque (~2300–2350 m) at 12.7 ka. Small glaciers persisted only inside the highest cirques (~2470 m), such as in Sendrosa Cirque, with moraines stabilising at 12.6 ka. The results of this work present the most complete chronology for Pyrenean glacial oscillations from the B–A to the YD.
PB Wiley
SN 0267-8179
SN 1099-1417
YR 2022
FD 2022
LK https://hdl.handle.net/20.500.14352/123384
UL https://hdl.handle.net/20.500.14352/123384
LA eng
NO Fernandes, M., Oliva, M., Vieira, G., Palacios, D., Fernández-Fernández, J.M., Garcia-oteyza, J., Schimmelpfennig, I., Team, A. and Antoniades, D. (2022), Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees. J. Quaternary Sci, 37: 42-58
NO Ministerio de Economía y Competitividad (España)
NO Generalitat de Catalunya (España)
NO Fundação para a Ciência e Tecnologia (Portugal)
NO Centre National de la Recherche Scientifique (Francia)
NO Agence Nationale de la Recherche (Francia)
DS Docta Complutense
RD 9 sept 2025