Exposure age chronology of the last glaciation in the eastern Pyrenees
We present a chronology of ice recession in the eastern Pyrenees based on in situ -produced 10 Be data obtained from the Têt paleoglacier complex. The sampling strategy is based on the relative chronology provided by a detailed geomorphological map of glacial landforms. Results indicate that the las...
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crcambridgeupr:10.1016/j.yqres.2007.11.004 2024-06-23T07:53:21+00:00 Exposure age chronology of the last glaciation in the eastern Pyrenees Delmas, Magali Gunnell, Yanni Braucher, Régis Calvet, Marc Bourlès, Didier 2008 http://dx.doi.org/10.1016/j.yqres.2007.11.004 http://api.elsevier.com/content/article/PII:S003358940800015X?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S003358940800015X?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400014459 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 69, issue 2, page 231-241 ISSN 0033-5894 1096-0287 journal-article 2008 crcambridgeupr https://doi.org/10.1016/j.yqres.2007.11.004 2024-06-05T04:03:31Z We present a chronology of ice recession in the eastern Pyrenees based on in situ -produced 10 Be data obtained from the Têt paleoglacier complex. The sampling strategy is based on the relative chronology provided by a detailed geomorphological map of glacial landforms. Results indicate that the last maximum ice advance occurred late (i.e., during Marine Isotope Stage 2) compared to the chronology currently established for the rest of the Pyrenees. Despite debatable evidence for a glacial readvance during the Oldest Dryas stade, ice-cap melt-out was rapid, residual cirque glaciers having disappeared by the Allerød interstade. This is consistent both with North Atlantic excursions established by the Greenland ice cores and paleoenvironmental data for the region. The rapid response of the east-Pyrenean ice cap to temperature variations is primarily linked to its small size compared to larger Pyrenean ice fields, to the dry Mediterranean climate, and to topography-related nonlinearities in which a small vertical rise in equilibrium line altitude generates a large change in ice mass. Possible sources of age uncertainty are discussed in the context of sampling design for single-nuclide ( 10 Be) dating of landform sequences in formerly glaciated landscapes. Article in Journal/Newspaper Greenland Greenland ice cores Ice cap North Atlantic Cambridge University Press Greenland Quaternary Research 69 2 231 241 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
We present a chronology of ice recession in the eastern Pyrenees based on in situ -produced 10 Be data obtained from the Têt paleoglacier complex. The sampling strategy is based on the relative chronology provided by a detailed geomorphological map of glacial landforms. Results indicate that the last maximum ice advance occurred late (i.e., during Marine Isotope Stage 2) compared to the chronology currently established for the rest of the Pyrenees. Despite debatable evidence for a glacial readvance during the Oldest Dryas stade, ice-cap melt-out was rapid, residual cirque glaciers having disappeared by the Allerød interstade. This is consistent both with North Atlantic excursions established by the Greenland ice cores and paleoenvironmental data for the region. The rapid response of the east-Pyrenean ice cap to temperature variations is primarily linked to its small size compared to larger Pyrenean ice fields, to the dry Mediterranean climate, and to topography-related nonlinearities in which a small vertical rise in equilibrium line altitude generates a large change in ice mass. Possible sources of age uncertainty are discussed in the context of sampling design for single-nuclide ( 10 Be) dating of landform sequences in formerly glaciated landscapes. |
format |
Article in Journal/Newspaper |
author |
Delmas, Magali Gunnell, Yanni Braucher, Régis Calvet, Marc Bourlès, Didier |
spellingShingle |
Delmas, Magali Gunnell, Yanni Braucher, Régis Calvet, Marc Bourlès, Didier Exposure age chronology of the last glaciation in the eastern Pyrenees |
author_facet |
Delmas, Magali Gunnell, Yanni Braucher, Régis Calvet, Marc Bourlès, Didier |
author_sort |
Delmas, Magali |
title |
Exposure age chronology of the last glaciation in the eastern Pyrenees |
title_short |
Exposure age chronology of the last glaciation in the eastern Pyrenees |
title_full |
Exposure age chronology of the last glaciation in the eastern Pyrenees |
title_fullStr |
Exposure age chronology of the last glaciation in the eastern Pyrenees |
title_full_unstemmed |
Exposure age chronology of the last glaciation in the eastern Pyrenees |
title_sort |
exposure age chronology of the last glaciation in the eastern pyrenees |
publisher |
Cambridge University Press (CUP) |
publishDate |
2008 |
url |
http://dx.doi.org/10.1016/j.yqres.2007.11.004 http://api.elsevier.com/content/article/PII:S003358940800015X?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S003358940800015X?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400014459 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores Ice cap North Atlantic |
genre_facet |
Greenland Greenland ice cores Ice cap North Atlantic |
op_source |
Quaternary Research volume 69, issue 2, page 231-241 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/j.yqres.2007.11.004 |
container_title |
Quaternary Research |
container_volume |
69 |
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2 |
container_start_page |
231 |
op_container_end_page |
241 |
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1802644953316196352 |