Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10451/51552 |
Resumo: | The Upper Garonne Basin included the largest glacial system in the Pyrenees during the last glacialcycle. Within the long‐term glacial retreat during Termination‐1(T‐1), glacier fluctuations left geomorphic evidencein the area. However, the chronology of T‐1 glacial oscillations on the northern slopes of the Central Pyrenees is stillpoorly constrained. Here, we introduce new geomorphological observations and a 12‐sample dataset of10Becosmic‐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 lastdeglaciation. Following the maximum ice extent, warmer conditions prevailing at ~15–14 ka, during theBølling–Allerød (B–A) Interstadial, favoured glacial retreat in the Ruda Valley. Within the B–A, glaciers experiencedtwo 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 glacierspersisted 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 theYD |
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Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central PyreneesBølling–AllerødCentral PyreneesCosmic‐ray exposure datingDeglaciationYounger DryasThe Upper Garonne Basin included the largest glacial system in the Pyrenees during the last glacialcycle. Within the long‐term glacial retreat during Termination‐1(T‐1), glacier fluctuations left geomorphic evidencein the area. However, the chronology of T‐1 glacial oscillations on the northern slopes of the Central Pyrenees is stillpoorly constrained. Here, we introduce new geomorphological observations and a 12‐sample dataset of10Becosmic‐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 lastdeglaciation. Following the maximum ice extent, warmer conditions prevailing at ~15–14 ka, during theBølling–Allerød (B–A) Interstadial, favoured glacial retreat in the Ruda Valley. Within the B–A, glaciers experiencedtwo 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 glacierspersisted 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 theYDWilwyRepositório da Universidade de LisboaFernandes, MarceloOliva, MarcVieira, GonçaloPalacios, D.Fernández-Fernández, Jose M.Garcia‐oteyza, J.Schimmelpfennig, I.Team, AsterAntoniades, D.2022-02-28T16:09:45Z20212021-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10451/51552engFernandes, M., Oliva, M., Vieira, G., Palacios, D., Fernández-Fernández, J.M., Garcia-oteyza, J., Schimmelpfennig, I., Team, A. and Antoniades, D. (2021), Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees. J. Quaternary Sci. https://doi.org/10.1002/jqs.33790267-817910.1002/jqs.3379info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-08T16:56:20Zoai:repositorio.ul.pt:10451/51552Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:02:50.354726Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees |
title |
Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees |
spellingShingle |
Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees Fernandes, Marcelo Bølling–Allerød Central Pyrenees Cosmic‐ray exposure dating Deglaciation Younger Dryas |
title_short |
Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees |
title_full |
Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees |
title_fullStr |
Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees |
title_full_unstemmed |
Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees |
title_sort |
Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees |
author |
Fernandes, Marcelo |
author_facet |
Fernandes, Marcelo Oliva, Marc Vieira, Gonçalo Palacios, D. Fernández-Fernández, Jose M. Garcia‐oteyza, J. Schimmelpfennig, I. Team, Aster Antoniades, D. |
author_role |
author |
author2 |
Oliva, Marc Vieira, Gonçalo Palacios, D. Fernández-Fernández, Jose M. Garcia‐oteyza, J. Schimmelpfennig, I. Team, Aster Antoniades, D. |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Fernandes, Marcelo Oliva, Marc Vieira, Gonçalo Palacios, D. Fernández-Fernández, Jose M. Garcia‐oteyza, J. Schimmelpfennig, I. Team, Aster Antoniades, D. |
dc.subject.por.fl_str_mv |
Bølling–Allerød Central Pyrenees Cosmic‐ray exposure dating Deglaciation Younger Dryas |
topic |
Bølling–Allerød Central Pyrenees Cosmic‐ray exposure dating Deglaciation Younger Dryas |
description |
The Upper Garonne Basin included the largest glacial system in the Pyrenees during the last glacialcycle. Within the long‐term glacial retreat during Termination‐1(T‐1), glacier fluctuations left geomorphic evidencein the area. However, the chronology of T‐1 glacial oscillations on the northern slopes of the Central Pyrenees is stillpoorly constrained. Here, we introduce new geomorphological observations and a 12‐sample dataset of10Becosmic‐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 lastdeglaciation. Following the maximum ice extent, warmer conditions prevailing at ~15–14 ka, during theBølling–Allerød (B–A) Interstadial, favoured glacial retreat in the Ruda Valley. Within the B–A, glaciers experiencedtwo 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 glacierspersisted 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 theYD |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021 2021-01-01T00:00:00Z 2022-02-28T16:09:45Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10451/51552 |
url |
http://hdl.handle.net/10451/51552 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Fernandes, M., Oliva, M., Vieira, G., Palacios, D., Fernández-Fernández, J.M., Garcia-oteyza, J., Schimmelpfennig, I., Team, A. and Antoniades, D. (2021), Glacial oscillations during the Bølling–Allerød Interstadial–Younger Dryas transition in the Ruda Valley, Central Pyrenees. J. Quaternary Sci. https://doi.org/10.1002/jqs.3379 0267-8179 10.1002/jqs.3379 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Wilwy |
publisher.none.fl_str_mv |
Wilwy |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799134578116395008 |