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Rapid deglaciation of the La Vega gorge (Sierra de Gredos, Iberian Peninsula) at the end of the global Last Glacial Maximum
dc.contributor.author | Sanjurjo-Sánchez, Jorge | |
dc.contributor.author | Alcalá-Reygosa, J. | |
dc.contributor.author | Campos, Néstor | |
dc.contributor.author | Schimmelpfennig, Irene | |
dc.contributor.author | Léanni, Laetitia | |
dc.contributor.author | Zamorano, José Juan | |
dc.date.accessioned | 2024-08-02T07:42:58Z | |
dc.date.available | 2024-08-02T07:42:58Z | |
dc.date.issued | 2024 | |
dc.identifier.citation | Alcalá-Reygosa, J., Campos, N., Schimmelpfennig, I., Sanjurjo-Sánchez, J., Léanni, L., Zamorano, J.J., ASTER Team (2024), Rapid deglaciation of the La Vega gorge (Sierra de Gredos, Iberian Peninsula) at the end of the global Last Glacial Maximum. Journal of Quaternary Science, 39(2), 277-288. https://doi.org/10.1002/jqs.3584 | es_ES |
dc.identifier.uri | http://hdl.handle.net/2183/38358 | |
dc.description.abstract | [Abstract] Previous studies from the Iberian Central System and other mountains of the Iberian Peninsula and Europe suggest that deglaciation in this area occurred at the end or immediately after the global Last Glacial Maximum (LGM, 26.5–19 ka). In this research, we investigate the timing and speed of deglaciation of the palaeoglacier in La Vega gorge (Iberian Central system) since the global LGM, dating the outer moraines, glacially polished bedrock and glaciofluvial deposits by means of in situ cosmogenic 10Be and optically stimulated luminescence. The results show that one intermediate arc located at the outer frontal moraine system has an age of ~21 ka, being consistent with the global LGM. Deglaciation began at ~21–19 ka, speeding up at ~19 ka. We estimate that around 4–5 km of the palaeoglacier receded in ~1–2 kyrs since ~19 ka, leaving La Vega gorge probably ice-free at ~18 ka. Therefore, our data confirm that deglaciation in Sierra de Gredos began at the end of the global LGM, characterised by a rapid and massive retreat of glaciers. | es_ES |
dc.description.sponsorship | This research was supported by the Mountain Warming project CGL2015-65813-R funded by the Spanish Ministry of Economy and Competitiveness, and with the help of the High Mountain Physical Geography Research Group of the Complutense University of Madrid (Spain). We would like to thank to the editor and the anonymous reviewers for their useful comments and suggestions, which improved this manuscript. The 10Be measurements were performed at the ASTER AMS national facility (CEREGE, Aix-en-Provence) which is supported by the INSU/CNRS, the ANR through the ‘Projets thématiques d'excellence’ programme for the ‘Equipements d'excellence’ ASTER-CEREGE action and IRD. The first author dedicates this work with great affection to his father Felix Alcalá Pascual. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Wiley | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-65813-R/ES/EL CALENTAMIENTO DE LAS MONTAÑAS: GEOCRONOLOGIA Y EFECTOS AMBIENTALES DE LA DEGLACIACION DE LAS AREAS DE ALTA MONTAÑA | es_ES |
dc.relation.uri | https://doi.org/10.1002/jqs.3584 | es_ES |
dc.rights | Creative Commons Attribution‐NonCommercial‐NoDerivs License | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.subject | 10Be cosmic ray exposure | es_ES |
dc.subject | Deglaciation | es_ES |
dc.subject | Global Last Glacial Maximum | es_ES |
dc.subject | Optically stimulated luminescence | es_ES |
dc.title | Rapid deglaciation of the La Vega gorge (Sierra de Gredos, Iberian Peninsula) at the end of the global Last Glacial Maximum | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.access | info:eu-repo/semantics/openAccess | es_ES |
UDC.journalTitle | Journal of Quaternary Science | es_ES |
UDC.volume | 39 | es_ES |
UDC.issue | 2 | es_ES |
UDC.startPage | 277 | es_ES |
UDC.endPage | 288 | es_ES |
dc.identifier.doi | doi.org/10.1002/jqs.3584 |
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