The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: a new study case from the Cantabrian Mountains (Spain)
Autor(a) principal: | |
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Data de Publicação: | 2022 |
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/10451/51443 |
Resumo: | During the Late Pleistocene, the main mountain ranges of the Iberian Peninsula were covered by small icefields and cirque and alpine glaciers. The deglaciation triggered paraglacial processes that generated landforms, mostly within the ice-free glacial cirques. In this research we analyse the deglaciation process in the Muxivén Cirque (42°15′N – 6°16′W), in the upper Sil River Basin, which includes some of the largest relict rock glaciers of the Cantabrian Mountains. We addressed this objective by means of accurate geomorphological reconstructions, sedimentological analysis, Schmidt-hammer surface weathering measurements and a dataset of 10 10Be Cosmic-Ray Exposure ages. Results reveal that after ~16 ka, glaciers retreated to the bottom of the cirques at the headwaters of the valley, leaving the walls free of ice and triggering rock avalanches onto the remnants of these glaciers. This paraglacial process supplied debris to a small glacier within Muxivén Cirque, which transformed in two rock glaciers. These debris isolated the ice inside the rock glaciers only for a very short period of time and ended up melting completely before the Younger Dryas. The lower sector of the largest one stabilized at 14.5 ± 1.5 ka, while the upper sector remained active until 13.5 ± 0.8 ka. Previous to the stabilization of the lower sector of the northern rock glacier, at its margin a high-energy debris avalanche occurred at ~14.0 ± 0.9 ka. These data agree with previous research, corroborating the paraglacial origin of most Iberian rock glaciers during the Bølling-Allerød interstadial. |
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The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: a new study case from the Cantabrian Mountains (Spain)Rock glacierDeglaciationParaglacial processesCosmic-Ray Exposure datingBølling-Allerød interstadialCantabrian MountainsDuring the Late Pleistocene, the main mountain ranges of the Iberian Peninsula were covered by small icefields and cirque and alpine glaciers. The deglaciation triggered paraglacial processes that generated landforms, mostly within the ice-free glacial cirques. In this research we analyse the deglaciation process in the Muxivén Cirque (42°15′N – 6°16′W), in the upper Sil River Basin, which includes some of the largest relict rock glaciers of the Cantabrian Mountains. We addressed this objective by means of accurate geomorphological reconstructions, sedimentological analysis, Schmidt-hammer surface weathering measurements and a dataset of 10 10Be Cosmic-Ray Exposure ages. Results reveal that after ~16 ka, glaciers retreated to the bottom of the cirques at the headwaters of the valley, leaving the walls free of ice and triggering rock avalanches onto the remnants of these glaciers. This paraglacial process supplied debris to a small glacier within Muxivén Cirque, which transformed in two rock glaciers. These debris isolated the ice inside the rock glaciers only for a very short period of time and ended up melting completely before the Younger Dryas. The lower sector of the largest one stabilized at 14.5 ± 1.5 ka, while the upper sector remained active until 13.5 ± 0.8 ka. Previous to the stabilization of the lower sector of the northern rock glacier, at its margin a high-energy debris avalanche occurred at ~14.0 ± 0.9 ka. These data agree with previous research, corroborating the paraglacial origin of most Iberian rock glaciers during the Bølling-Allerød interstadial.ElsevierRepositório da Universidade de LisboaSantos-González, JavierGonzález-Gutiérrez, Rosa BlancaRedondo-Vega, José MaríaGómez-Villar, AmeliaJomelli, VincentFernández-Fernández, Jose M.Andrés, NuriaGarcía-Ruiz, José M.Peña-Pérez, Sergio AlbertoMelón-Nava, AdriánOliva, MarcÁlvarez-Martínez, JavierCharton, JoannaPalacios, David2022-02-22T10:31:05Z20222022-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10451/51443engSantos-González, J., González-Gutiérrez, R. B., Redondo-Vega, J. M., Gómez-Villar, A., Jomelli, V., Fernández-Fernández, J. M., Andrés, N., García-Ruiz, J. M., Peña-Pérez, S. A., Melón-Nava, A., Oliva, M., Álvarez-Martínez, J., Charton, J., & Palacios, D. (2022). The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: A new study case from the Cantabrian Mountains (Spain). Geomorphology, 401, 108112. https://doi.org/10.1016/j.geomorph.2022.1081120169-555X10.1016/j.geomorph.2022.108112info: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:RCAAP2023-11-08T16:56:08Zoai:repositorio.ul.pt:10451/51443Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:02:44.090523Repositório 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 |
The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: a new study case from the Cantabrian Mountains (Spain) |
title |
The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: a new study case from the Cantabrian Mountains (Spain) |
spellingShingle |
The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: a new study case from the Cantabrian Mountains (Spain) Santos-González, Javier Rock glacier Deglaciation Paraglacial processes Cosmic-Ray Exposure dating Bølling-Allerød interstadial Cantabrian Mountains |
title_short |
The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: a new study case from the Cantabrian Mountains (Spain) |
title_full |
The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: a new study case from the Cantabrian Mountains (Spain) |
title_fullStr |
The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: a new study case from the Cantabrian Mountains (Spain) |
title_full_unstemmed |
The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: a new study case from the Cantabrian Mountains (Spain) |
title_sort |
The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: a new study case from the Cantabrian Mountains (Spain) |
author |
Santos-González, Javier |
author_facet |
Santos-González, Javier González-Gutiérrez, Rosa Blanca Redondo-Vega, José María Gómez-Villar, Amelia Jomelli, Vincent Fernández-Fernández, Jose M. Andrés, Nuria García-Ruiz, José M. Peña-Pérez, Sergio Alberto Melón-Nava, Adrián Oliva, Marc Álvarez-Martínez, Javier Charton, Joanna Palacios, David |
author_role |
author |
author2 |
González-Gutiérrez, Rosa Blanca Redondo-Vega, José María Gómez-Villar, Amelia Jomelli, Vincent Fernández-Fernández, Jose M. Andrés, Nuria García-Ruiz, José M. Peña-Pérez, Sergio Alberto Melón-Nava, Adrián Oliva, Marc Álvarez-Martínez, Javier Charton, Joanna Palacios, David |
author2_role |
author author author author author 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 |
Santos-González, Javier González-Gutiérrez, Rosa Blanca Redondo-Vega, José María Gómez-Villar, Amelia Jomelli, Vincent Fernández-Fernández, Jose M. Andrés, Nuria García-Ruiz, José M. Peña-Pérez, Sergio Alberto Melón-Nava, Adrián Oliva, Marc Álvarez-Martínez, Javier Charton, Joanna Palacios, David |
dc.subject.por.fl_str_mv |
Rock glacier Deglaciation Paraglacial processes Cosmic-Ray Exposure dating Bølling-Allerød interstadial Cantabrian Mountains |
topic |
Rock glacier Deglaciation Paraglacial processes Cosmic-Ray Exposure dating Bølling-Allerød interstadial Cantabrian Mountains |
description |
During the Late Pleistocene, the main mountain ranges of the Iberian Peninsula were covered by small icefields and cirque and alpine glaciers. The deglaciation triggered paraglacial processes that generated landforms, mostly within the ice-free glacial cirques. In this research we analyse the deglaciation process in the Muxivén Cirque (42°15′N – 6°16′W), in the upper Sil River Basin, which includes some of the largest relict rock glaciers of the Cantabrian Mountains. We addressed this objective by means of accurate geomorphological reconstructions, sedimentological analysis, Schmidt-hammer surface weathering measurements and a dataset of 10 10Be Cosmic-Ray Exposure ages. Results reveal that after ~16 ka, glaciers retreated to the bottom of the cirques at the headwaters of the valley, leaving the walls free of ice and triggering rock avalanches onto the remnants of these glaciers. This paraglacial process supplied debris to a small glacier within Muxivén Cirque, which transformed in two rock glaciers. These debris isolated the ice inside the rock glaciers only for a very short period of time and ended up melting completely before the Younger Dryas. The lower sector of the largest one stabilized at 14.5 ± 1.5 ka, while the upper sector remained active until 13.5 ± 0.8 ka. Previous to the stabilization of the lower sector of the northern rock glacier, at its margin a high-energy debris avalanche occurred at ~14.0 ± 0.9 ka. These data agree with previous research, corroborating the paraglacial origin of most Iberian rock glaciers during the Bølling-Allerød interstadial. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-02-22T10:31:05Z 2022 2022-01-01T00:00:00Z |
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/10451/51443 |
url |
http://hdl.handle.net/10451/51443 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Santos-González, J., González-Gutiérrez, R. B., Redondo-Vega, J. M., Gómez-Villar, A., Jomelli, V., Fernández-Fernández, J. M., Andrés, N., García-Ruiz, J. M., Peña-Pérez, S. A., Melón-Nava, A., Oliva, M., Álvarez-Martínez, J., Charton, J., & Palacios, D. (2022). The origin and collapse of rock glaciers during the Bølling-Allerød interstadial: A new study case from the Cantabrian Mountains (Spain). Geomorphology, 401, 108112. https://doi.org/10.1016/j.geomorph.2022.108112 0169-555X 10.1016/j.geomorph.2022.108112 |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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 |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799134577124442112 |