Chronological and geomorphological investigation of fossil debris covered glaciers in relation to deglaciation processes: A case study in the Sierra de La Demanda, northern Spain

Fernández-Fernández, José M. et. al.- 18 páginas.- Ilustraciones.- © 2017 Elsevier Ltd. All rights reserved.

Detalhes bibliográficos
Autores: Fernández-Fernández, José M., García-Ruiz, José María, Léanni, Laëtitia
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2017
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/155252
Acesso em linha:http://hdl.handle.net/10261/155252
Access Level:acceso abierto
Palavra-chave:Debris-covered glacier
Oldest dryas
Cosmogenic exposure dating
Sierra de la Demanda
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spelling Chronological and geomorphological investigation of fossil debris covered glaciers in relation to deglaciation processes: A case study in the Sierra de La Demanda, northern SpainFernández-Fernández, José M.García-Ruiz, José MaríaLéanni, LaëtitiaDebris-covered glacierOldest dryasCosmogenic exposure datingSierra de la DemandaFernández-Fernández, José M. et. al.- 18 páginas.- Ilustraciones.- © 2017 Elsevier Ltd. All rights reserved.In this study, fossil debris-covered glaciers are investigated and dated in the Sierra de la Demanda, northern Spain. They are located in glacial valleys of approximately 1 km in length, where several moraines represent distinct phases of the deglaciation period. Several boulders in the moraines and fossil debris-covered glaciers were selected for analysis of Be-10 surface exposure dating. A minimum age of 17.8 +/- 2.2 ka was obtained for the outermost moraine in the San Lorenzo cirque, and was attributed to the global Last Glacial Maximum (LGM) or earlier glacial stages, based on deglaciation dates determined in other mountain areas of northern Spain. The youngest moraines were dated to approximately 16.7 +/- 1.4 ka, and hence correspond to the GS-2a stadial (Oldest Dryas). Given that the debris-covered glaciers fossilize intermediate moraines, it was deduced that they developed between the LGM and the Oldest Dryas, coinciding with a period of extensive deglaciation. During this deglaciation phase, the cirque headwalls likely discharged large quantities of boulders and blocks that covered the residual ice masses. The resulting debris-covered glaciers evolved slowly because the debris mantle preserved the ice core from rapid ablation, and consequently they remained active until the end of the Late Glacial or the beginning of the Holocene (for the San Lorenzo cirque) and the Holocene Thermal Maximum (for the Mencilla cirque). The north-facing part of the Mencilla cirque ensured longer preservation of the ice core. (C) 2017 Elsevier Ltd. All rights reserved.Support for this research was provided by the projects ESPAS (CGL2015-65569-R) (MINECO/FEDER), MOUNTAIN WARMING (CGL2015-65813-R) (Spanish Ministry of Economy and Competitiveness). The study was assisted by the High Mountain Physical Geography research group (Complutense University of Madrid) and the research group on Geomorphology and Global Change, which is supported by the Aragon Government and the European Social Fund. The 10Be measurements were performed at the ASTER AMS national facility (CEREGE, Aix en Provence, France), which is supported by the INSU, CNRS and the ANR through the "Projets thematiques d'excellence" program for the "Equipements d'excellence" ASTER-CEREGE action and IRD. Jose M. Fernandez-Fernandez received a grant from the FPU programme (FPU14/0650) (Spanish Ministry of Education, Culture and Sport).Peer reviewedElsevierMinisterio de Economía y Competitividad (España)Universidad Complutense de MadridGobierno de AragónEuropean CommissionMinisterio de Educación, Cultura y Deporte (España)Institut national des sciences de l'Univers (France)Centre National de la Recherche Scientifique (France)Agence Nationale de la Recherche (France)Institut de Recherche pour le Développement (France)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201720172017info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/155252reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-65569-Rinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-65813-Rhttp://dx.doi.org/10.1016/j.quascirev.2017.06.034Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1552522026-05-22T06:33:51Z
dc.title.none.fl_str_mv Chronological and geomorphological investigation of fossil debris covered glaciers in relation to deglaciation processes: A case study in the Sierra de La Demanda, northern Spain
title Chronological and geomorphological investigation of fossil debris covered glaciers in relation to deglaciation processes: A case study in the Sierra de La Demanda, northern Spain
spellingShingle Chronological and geomorphological investigation of fossil debris covered glaciers in relation to deglaciation processes: A case study in the Sierra de La Demanda, northern Spain
Fernández-Fernández, José M.
Debris-covered glacier
Oldest dryas
Cosmogenic exposure dating
Sierra de la Demanda
title_short Chronological and geomorphological investigation of fossil debris covered glaciers in relation to deglaciation processes: A case study in the Sierra de La Demanda, northern Spain
title_full Chronological and geomorphological investigation of fossil debris covered glaciers in relation to deglaciation processes: A case study in the Sierra de La Demanda, northern Spain
title_fullStr Chronological and geomorphological investigation of fossil debris covered glaciers in relation to deglaciation processes: A case study in the Sierra de La Demanda, northern Spain
title_full_unstemmed Chronological and geomorphological investigation of fossil debris covered glaciers in relation to deglaciation processes: A case study in the Sierra de La Demanda, northern Spain
title_sort Chronological and geomorphological investigation of fossil debris covered glaciers in relation to deglaciation processes: A case study in the Sierra de La Demanda, northern Spain
dc.creator.none.fl_str_mv Fernández-Fernández, José M.
García-Ruiz, José María
Léanni, Laëtitia
author Fernández-Fernández, José M.
author_facet Fernández-Fernández, José M.
García-Ruiz, José María
Léanni, Laëtitia
author_role author
author2 García-Ruiz, José María
Léanni, Laëtitia
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Universidad Complutense de Madrid
Gobierno de Aragón
European Commission
Ministerio de Educación, Cultura y Deporte (España)
Institut national des sciences de l'Univers (France)
Centre National de la Recherche Scientifique (France)
Agence Nationale de la Recherche (France)
Institut de Recherche pour le Développement (France)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Debris-covered glacier
Oldest dryas
Cosmogenic exposure dating
Sierra de la Demanda
topic Debris-covered glacier
Oldest dryas
Cosmogenic exposure dating
Sierra de la Demanda
description Fernández-Fernández, José M. et. al.- 18 páginas.- Ilustraciones.- © 2017 Elsevier Ltd. All rights reserved.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/155252
url http://hdl.handle.net/10261/155252
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-65569-R
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-65813-R
http://dx.doi.org/10.1016/j.quascirev.2017.06.034
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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