Last Local Glacial Maximum and deglaciation of the Andean Central Volcanic Zone: the case of Hualcahualca volcano and Patapampa Altiplano (Southern Peru)El caso del volcán HualcaHualca y del altiplano de Patapampa (Sur de Perú)
The aim of this study is to constrain the timing of the deglaciation process since the Last Local Glacial Maximum in HualcaHualca volcano and Patapampa Altiplano, located in the Andean Central Volcanic Zone. Nine 36Cl cosmogenic surface exposure dating of moraine boulders as well as polished and str...
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Format: | Article in Journal/Newspaper |
Language: | English |
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2017
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Online Access: | https://dialnet.unirioja.es/servlet/oaiart?codigo=6122891 |
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ftdialnet:oai:dialnet.unirioja.es:ART0001315484 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Dialnet - Portada de revistas (Universidad de La Rioja) |
op_collection_id |
ftdialnet |
language |
English |
topic |
Cosmogenic Surface Exposure dating Tropical Glaciation Last Glacial Maximum Younger Dryas Antarctic Cold Reversal Holocene Andean Central Volcanic Zone Southern Peru Datación de superficies por exposición a la radiación cósmica Glaciación en los Trópicos Último Máximo Glacial Holoceno Zona Volcánica Centroandina Sur de Perú |
spellingShingle |
Cosmogenic Surface Exposure dating Tropical Glaciation Last Glacial Maximum Younger Dryas Antarctic Cold Reversal Holocene Andean Central Volcanic Zone Southern Peru Datación de superficies por exposición a la radiación cósmica Glaciación en los Trópicos Último Máximo Glacial Holoceno Zona Volcánica Centroandina Sur de Perú Alcalá Reygosa, Jesús Last Local Glacial Maximum and deglaciation of the Andean Central Volcanic Zone: the case of Hualcahualca volcano and Patapampa Altiplano (Southern Peru)El caso del volcán HualcaHualca y del altiplano de Patapampa (Sur de Perú) |
topic_facet |
Cosmogenic Surface Exposure dating Tropical Glaciation Last Glacial Maximum Younger Dryas Antarctic Cold Reversal Holocene Andean Central Volcanic Zone Southern Peru Datación de superficies por exposición a la radiación cósmica Glaciación en los Trópicos Último Máximo Glacial Holoceno Zona Volcánica Centroandina Sur de Perú |
description |
The aim of this study is to constrain the timing of the deglaciation process since the Last Local Glacial Maximum in HualcaHualca volcano and Patapampa Altiplano, located in the Andean Central Volcanic Zone. Nine 36Cl cosmogenic surface exposure dating of moraine boulders as well as polished and striated bedrock surfaces are presented. The 36Cl cosmogenic exposure ages indicate that the glaciers reached their maximum extent at ~ 17 - 16 ka on the HualcaHualca volcano during the Heinrich 1 event and the Tauca paleolake cycle. Since then glaciers began to retreat until ~ 12 ka, when they went through a phase of readvance or stillstand. The deglaciation of HualcaHualca was constant since ~ 11.5 ka, coinciding with the disappearance of the ice cap from the Patapampa Altiplano. These glacial ages do not corroborate a Last Local Glacial Maximum prior to the global Last Glacial Maximum but they indicate a sensitive reaction of the glacier system to precipitation fluctuations. According to the analysis of cosmogenic exposure ages reported from HualcaHualca, Sajama and Tunupa volcanoes, the onset of deglaciation since Last Local Glacial Maximum occurred at the end of the Heinrich 1 event and the Tauca paleolake cycle in the Andean Central Volcanic Zone. However, the glacier retreat was not continuous because at least one significant readvance or stillstand phase has been reported in most of the volcanoes studied in this region although the ages cannot be clearly related to the Younger Dryas and/or the Antarctic Cold Reversal cold events. After this readvance or stillstand, the glaciers of the Central Volcanic Zone retreated, but at least three clear minor readvances evidence a not homogeneous warm and/or dry climate during the Holocene. Even though in situ cosmogenic exposure provides important glacial chronological data, it is difficult to establish a consistent regional glacial reconstruction and clear connections with the main Late Pleistocene cold episodes due to limitations associated with in situ cosmogenic ... |
format |
Article in Journal/Newspaper |
author |
Alcalá Reygosa, Jesús |
author_facet |
Alcalá Reygosa, Jesús |
author_sort |
Alcalá Reygosa, Jesús |
title |
Last Local Glacial Maximum and deglaciation of the Andean Central Volcanic Zone: the case of Hualcahualca volcano and Patapampa Altiplano (Southern Peru)El caso del volcán HualcaHualca y del altiplano de Patapampa (Sur de Perú) |
title_short |
Last Local Glacial Maximum and deglaciation of the Andean Central Volcanic Zone: the case of Hualcahualca volcano and Patapampa Altiplano (Southern Peru)El caso del volcán HualcaHualca y del altiplano de Patapampa (Sur de Perú) |
title_full |
Last Local Glacial Maximum and deglaciation of the Andean Central Volcanic Zone: the case of Hualcahualca volcano and Patapampa Altiplano (Southern Peru)El caso del volcán HualcaHualca y del altiplano de Patapampa (Sur de Perú) |
title_fullStr |
Last Local Glacial Maximum and deglaciation of the Andean Central Volcanic Zone: the case of Hualcahualca volcano and Patapampa Altiplano (Southern Peru)El caso del volcán HualcaHualca y del altiplano de Patapampa (Sur de Perú) |
title_full_unstemmed |
Last Local Glacial Maximum and deglaciation of the Andean Central Volcanic Zone: the case of Hualcahualca volcano and Patapampa Altiplano (Southern Peru)El caso del volcán HualcaHualca y del altiplano de Patapampa (Sur de Perú) |
title_sort |
last local glacial maximum and deglaciation of the andean central volcanic zone: the case of hualcahualca volcano and patapampa altiplano (southern peru)el caso del volcán hualcahualca y del altiplano de patapampa (sur de perú) |
publishDate |
2017 |
url |
https://dialnet.unirioja.es/servlet/oaiart?codigo=6122891 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice cap |
genre_facet |
Antarc* Antarctic Ice cap |
op_source |
Cuadernos de investigación geográfica / Geographical Research Letters, ISSN 0211-6820, Nº. 43, 2, 2017, pags. 649-666 |
op_relation |
https://dialnet.unirioja.es/servlet/oaiart?codigo=6122891 (Revista) ISSN 0211-6820 |
op_rights |
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ftdialnet:oai:dialnet.unirioja.es:ART0001315484 2023-05-15T13:33:23+02:00 Last Local Glacial Maximum and deglaciation of the Andean Central Volcanic Zone: the case of Hualcahualca volcano and Patapampa Altiplano (Southern Peru)El caso del volcán HualcaHualca y del altiplano de Patapampa (Sur de Perú) Alcalá Reygosa, Jesús 2017 application/pdf https://dialnet.unirioja.es/servlet/oaiart?codigo=6122891 eng eng https://dialnet.unirioja.es/servlet/oaiart?codigo=6122891 (Revista) ISSN 0211-6820 LICENCIA DE USO: Los documentos a texto completo incluidos en Dialnet son de acceso libre y propiedad de sus autores y/o editores. Por tanto, cualquier acto de reproducción, distribución, comunicación pública y/o transformación total o parcial requiere el consentimiento expreso y escrito de aquéllos. Cualquier enlace al texto completo de estos documentos deberá hacerse a través de la URL oficial de éstos en Dialnet. Más información: https://dialnet.unirioja.es/info/derechosOAI | INTELLECTUAL PROPERTY RIGHTS STATEMENT: Full text documents hosted by Dialnet are protected by copyright and/or related rights. This digital object is accessible without charge, but its use is subject to the licensing conditions set by its authors or editors. Unless expressly stated otherwise in the licensing conditions, you are free to linking, browsing, printing and making a copy for your own personal purposes. All other acts of reproduction and communication to the public are subject to the licensing conditions expressed by editors and authors and require consent from them. Any link to this document should be made using its official URL in Dialnet. More info: https://dialnet.unirioja.es/info/derechosOAI Cuadernos de investigación geográfica / Geographical Research Letters, ISSN 0211-6820, Nº. 43, 2, 2017, pags. 649-666 Cosmogenic Surface Exposure dating Tropical Glaciation Last Glacial Maximum Younger Dryas Antarctic Cold Reversal Holocene Andean Central Volcanic Zone Southern Peru Datación de superficies por exposición a la radiación cósmica Glaciación en los Trópicos Último Máximo Glacial Holoceno Zona Volcánica Centroandina Sur de Perú text (article) 2017 ftdialnet 2019-08-29T12:12:23Z The aim of this study is to constrain the timing of the deglaciation process since the Last Local Glacial Maximum in HualcaHualca volcano and Patapampa Altiplano, located in the Andean Central Volcanic Zone. Nine 36Cl cosmogenic surface exposure dating of moraine boulders as well as polished and striated bedrock surfaces are presented. The 36Cl cosmogenic exposure ages indicate that the glaciers reached their maximum extent at ~ 17 - 16 ka on the HualcaHualca volcano during the Heinrich 1 event and the Tauca paleolake cycle. Since then glaciers began to retreat until ~ 12 ka, when they went through a phase of readvance or stillstand. The deglaciation of HualcaHualca was constant since ~ 11.5 ka, coinciding with the disappearance of the ice cap from the Patapampa Altiplano. These glacial ages do not corroborate a Last Local Glacial Maximum prior to the global Last Glacial Maximum but they indicate a sensitive reaction of the glacier system to precipitation fluctuations. According to the analysis of cosmogenic exposure ages reported from HualcaHualca, Sajama and Tunupa volcanoes, the onset of deglaciation since Last Local Glacial Maximum occurred at the end of the Heinrich 1 event and the Tauca paleolake cycle in the Andean Central Volcanic Zone. However, the glacier retreat was not continuous because at least one significant readvance or stillstand phase has been reported in most of the volcanoes studied in this region although the ages cannot be clearly related to the Younger Dryas and/or the Antarctic Cold Reversal cold events. After this readvance or stillstand, the glaciers of the Central Volcanic Zone retreated, but at least three clear minor readvances evidence a not homogeneous warm and/or dry climate during the Holocene. Even though in situ cosmogenic exposure provides important glacial chronological data, it is difficult to establish a consistent regional glacial reconstruction and clear connections with the main Late Pleistocene cold episodes due to limitations associated with in situ cosmogenic ... Article in Journal/Newspaper Antarc* Antarctic Ice cap Dialnet - Portada de revistas (Universidad de La Rioja) Antarctic The Antarctic |