Chronology of the last glaciation in central Strait of Magellan and Bahia Inutil, southernmost South America
Glacier fluctuations in the Strait of Magellan tell of the climatic changes that affected southern latitudes at c. 53–55°S during the Last Glacial Maximum (LGM) and Late-glacial/Holocene transition. Here we present a revised chronology based on cosmogenic isotope analysis, amino acid racemisation an...
Published in: | Geografiska Annaler: Series A, Physical Geography |
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Online Access: | http://hdl.handle.net/1893/17732 https://doi.org/10.1111/j.0435-3676.2005.00260.x http://dspace.stir.ac.uk/bitstream/1893/17732/1/McCulloch%20et%20al%20289.pdf |
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ftunivstirling:oai:dspace.stir.ac.uk:1893/17732 2023-05-15T13:48:07+02:00 Chronology of the last glaciation in central Strait of Magellan and Bahia Inutil, southernmost South America McCulloch, Robert Fogwill, Chris Sugden, David E Bentley, Michael J Kubik, Peter Biological and Environmental Sciences University of Sydney University of Edinburgh Durham University ETH Zurich orcid:0000-0001-5542-3703 2005-06 application/pdf http://hdl.handle.net/1893/17732 https://doi.org/10.1111/j.0435-3676.2005.00260.x http://dspace.stir.ac.uk/bitstream/1893/17732/1/McCulloch%20et%20al%20289.pdf en eng Wiley-Blackwell McCulloch R, Fogwill C, Sugden DE, Bentley MJ & Kubik P (2005) Chronology of the last glaciation in central Strait of Magellan and Bahia Inutil, southernmost South America. Geografiska Annaler: Series A, Physical Geography, 87 (2), pp. 289-312. https://doi.org/10.1111/j.0435-3676.2005.00260.x http://hdl.handle.net/1893/17732 doi:10.1111/j.0435-3676.2005.00260.x WOS:000230361200003 2-s2.0-21344437065 716617 http://dspace.stir.ac.uk/bitstream/1893/17732/1/McCulloch%20et%20al%20289.pdf The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. http://www.rioxx.net/licenses/under-embargo-all-rights-reserved 2999-12-31 [McCulloch et al 289.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work. Environmental Geography Environmental Change Journal Article VoR - Version of Record 2005 ftunivstirling https://doi.org/10.1111/j.0435-3676.2005.00260.x 2022-06-13T18:45:28Z Glacier fluctuations in the Strait of Magellan tell of the climatic changes that affected southern latitudes at c. 53–55°S during the Last Glacial Maximum (LGM) and Late-glacial/Holocene transition. Here we present a revised chronology based on cosmogenic isotope analysis, amino acid racemisation and tephrochronology. We unpick the effect of bedrock-derived lignite which has affected many new and revised dates that constrain five glacier advances (A to E). Advance A is prior to the LGM. LGM is represented by Advance B that reached and largely formed the arcuate peninsula Juan Mazia. Carbon-14 and 10Be dating show it occurred after 31 250 cal yrs BP and culminated at 25 200–23 100 cal yrs BP and was then followed by the slightly less extensive advance C sometime before 22 400–20 300 cal yrs BP. This pattern of an early maximum is found elsewhere in South America and more widely. Stage D, considerably less extensive, culminated sometime before 17 700–17 600 cal yrs BP and was followed by rapid and widespread glacier retreat. Advance E, which dammed a lake, spanned 15 500–11 770 cal yrs BPoverlaps the Bølling–Allerød interstadials and the glacier retreat occurs during the peak of the Younger Dryas stadial in the northern hemisphere. However, the stage E advance coincides with the Antarctic Cold Reversal (c. 14 800–12 700 cal yrs BP) and may indicate that some millennial-scale climatic fluctuations in the Late-glacial period are out of phase between the northern and southern hemispheres. Article in Journal/Newspaper Antarc* Antarctic University of Stirling: Stirling Digital Research Repository Antarctic The Antarctic Geografiska Annaler: Series A, Physical Geography 87 2 289 312 |
institution |
Open Polar |
collection |
University of Stirling: Stirling Digital Research Repository |
op_collection_id |
ftunivstirling |
language |
English |
topic |
Environmental Geography Environmental Change |
spellingShingle |
Environmental Geography Environmental Change McCulloch, Robert Fogwill, Chris Sugden, David E Bentley, Michael J Kubik, Peter Chronology of the last glaciation in central Strait of Magellan and Bahia Inutil, southernmost South America |
topic_facet |
Environmental Geography Environmental Change |
description |
Glacier fluctuations in the Strait of Magellan tell of the climatic changes that affected southern latitudes at c. 53–55°S during the Last Glacial Maximum (LGM) and Late-glacial/Holocene transition. Here we present a revised chronology based on cosmogenic isotope analysis, amino acid racemisation and tephrochronology. We unpick the effect of bedrock-derived lignite which has affected many new and revised dates that constrain five glacier advances (A to E). Advance A is prior to the LGM. LGM is represented by Advance B that reached and largely formed the arcuate peninsula Juan Mazia. Carbon-14 and 10Be dating show it occurred after 31 250 cal yrs BP and culminated at 25 200–23 100 cal yrs BP and was then followed by the slightly less extensive advance C sometime before 22 400–20 300 cal yrs BP. This pattern of an early maximum is found elsewhere in South America and more widely. Stage D, considerably less extensive, culminated sometime before 17 700–17 600 cal yrs BP and was followed by rapid and widespread glacier retreat. Advance E, which dammed a lake, spanned 15 500–11 770 cal yrs BPoverlaps the Bølling–Allerød interstadials and the glacier retreat occurs during the peak of the Younger Dryas stadial in the northern hemisphere. However, the stage E advance coincides with the Antarctic Cold Reversal (c. 14 800–12 700 cal yrs BP) and may indicate that some millennial-scale climatic fluctuations in the Late-glacial period are out of phase between the northern and southern hemispheres. |
author2 |
Biological and Environmental Sciences University of Sydney University of Edinburgh Durham University ETH Zurich orcid:0000-0001-5542-3703 |
format |
Article in Journal/Newspaper |
author |
McCulloch, Robert Fogwill, Chris Sugden, David E Bentley, Michael J Kubik, Peter |
author_facet |
McCulloch, Robert Fogwill, Chris Sugden, David E Bentley, Michael J Kubik, Peter |
author_sort |
McCulloch, Robert |
title |
Chronology of the last glaciation in central Strait of Magellan and Bahia Inutil, southernmost South America |
title_short |
Chronology of the last glaciation in central Strait of Magellan and Bahia Inutil, southernmost South America |
title_full |
Chronology of the last glaciation in central Strait of Magellan and Bahia Inutil, southernmost South America |
title_fullStr |
Chronology of the last glaciation in central Strait of Magellan and Bahia Inutil, southernmost South America |
title_full_unstemmed |
Chronology of the last glaciation in central Strait of Magellan and Bahia Inutil, southernmost South America |
title_sort |
chronology of the last glaciation in central strait of magellan and bahia inutil, southernmost south america |
publisher |
Wiley-Blackwell |
publishDate |
2005 |
url |
http://hdl.handle.net/1893/17732 https://doi.org/10.1111/j.0435-3676.2005.00260.x http://dspace.stir.ac.uk/bitstream/1893/17732/1/McCulloch%20et%20al%20289.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
McCulloch R, Fogwill C, Sugden DE, Bentley MJ & Kubik P (2005) Chronology of the last glaciation in central Strait of Magellan and Bahia Inutil, southernmost South America. Geografiska Annaler: Series A, Physical Geography, 87 (2), pp. 289-312. https://doi.org/10.1111/j.0435-3676.2005.00260.x http://hdl.handle.net/1893/17732 doi:10.1111/j.0435-3676.2005.00260.x WOS:000230361200003 2-s2.0-21344437065 716617 http://dspace.stir.ac.uk/bitstream/1893/17732/1/McCulloch%20et%20al%20289.pdf |
op_rights |
The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. http://www.rioxx.net/licenses/under-embargo-all-rights-reserved 2999-12-31 [McCulloch et al 289.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work. |
op_doi |
https://doi.org/10.1111/j.0435-3676.2005.00260.x |
container_title |
Geografiska Annaler: Series A, Physical Geography |
container_volume |
87 |
container_issue |
2 |
container_start_page |
289 |
op_container_end_page |
312 |
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1766248600688394240 |