Characteristics and sources of tephra layers in the EPICA-Dome C ice record (East Antarctica): Implications for past atmospheric circulation and ice core stratigraphic correlations
Thirteen discrete air-fall tephra layers were identified in the last 200,000-yr section of the EPICA-Dome C ice record drilled in the East Antarctic plateau (75°06′S, 123°21′E). Quantitative grain size, glass particle morphology, and the grain-discrete major element composition of the glass fraction...
Published in: | Earth and Planetary Science Letters |
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Online Access: | http://hdl.handle.net/10281/17863 https://doi.org/10.1016/j.epsl.2005.09.005 |
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ftunivmilanobic:oai:boa.unimib.it:10281/17863 2024-04-21T07:49:59+00:00 Characteristics and sources of tephra layers in the EPICA-Dome C ice record (East Antarctica): Implications for past atmospheric circulation and ice core stratigraphic correlations Narcisi, B Petit, J Basile Doelsch, I DELMONTE, BARBARA MAGGI, VALTER Narcisi, B Petit, J Delmonte, B Basile Doelsch, I Maggi, V 2005 http://hdl.handle.net/10281/17863 https://doi.org/10.1016/j.epsl.2005.09.005 eng eng Elsevier info:eu-repo/semantics/altIdentifier/wos/WOS:000233323400006 volume:239 issue:3-4 firstpage:253 lastpage:265 journal:EARTH AND PLANETARY SCIENCE LETTERS http://hdl.handle.net/10281/17863 doi:10.1016/j.epsl.2005.09.005 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-27744452895 Antarctica ice core synchronization vocanic activity info:eu-repo/semantics/article 2005 ftunivmilanobic https://doi.org/10.1016/j.epsl.2005.09.005 2024-03-28T01:02:31Z Thirteen discrete air-fall tephra layers were identified in the last 200,000-yr section of the EPICA-Dome C ice record drilled in the East Antarctic plateau (75°06′S, 123°21′E). Quantitative grain size, glass particle morphology, and the grain-discrete major element composition of the glass fraction of these layers were investigated. Through comparison with literature data on the rock composition of Quaternary volcanic centres located within and around Antarctica, five tephra layers were attributed to South Sandwich volcanoes in the South Atlantic Ocean, two to South Shetland volcanoes (northern Antarctic Peninsula), two to Andean volcanoes, and four to Antarctic (Marie Byrd Land and Melbourne) provinces. The abundance of layers originating in the southern part of the Atlantic confirms that westerly atmospheric circulation spiralling towards East Antarctica prevailed over the last 200 ka. Moreover, the record of events from Antarctic centres suggests that atmospheric trajectories from West to East Antarctica can also be significant. A few ash layers are geochemically distinct and appear equivalent to levels from Vostok and Dome Fuji deep ice records, located ca. 600 km and ca. 2000 km, respectively, from Dome C on the Antarctic plateau. These layers provide unambiguous markers for future correlation with other Antarctic ice cores and circumpolar marine climatic records. They also provide reliable constraints to get a common timescale by glaciological modelling, and represent a first step towards absolute ice core dating. © 2005 Published by Elsevier B.V. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica EPICA ice core Marie Byrd Land South Atlantic Ocean Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) Earth and Planetary Science Letters 239 3-4 253 265 |
institution |
Open Polar |
collection |
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
op_collection_id |
ftunivmilanobic |
language |
English |
topic |
Antarctica ice core synchronization vocanic activity |
spellingShingle |
Antarctica ice core synchronization vocanic activity Narcisi, B Petit, J Basile Doelsch, I DELMONTE, BARBARA MAGGI, VALTER Characteristics and sources of tephra layers in the EPICA-Dome C ice record (East Antarctica): Implications for past atmospheric circulation and ice core stratigraphic correlations |
topic_facet |
Antarctica ice core synchronization vocanic activity |
description |
Thirteen discrete air-fall tephra layers were identified in the last 200,000-yr section of the EPICA-Dome C ice record drilled in the East Antarctic plateau (75°06′S, 123°21′E). Quantitative grain size, glass particle morphology, and the grain-discrete major element composition of the glass fraction of these layers were investigated. Through comparison with literature data on the rock composition of Quaternary volcanic centres located within and around Antarctica, five tephra layers were attributed to South Sandwich volcanoes in the South Atlantic Ocean, two to South Shetland volcanoes (northern Antarctic Peninsula), two to Andean volcanoes, and four to Antarctic (Marie Byrd Land and Melbourne) provinces. The abundance of layers originating in the southern part of the Atlantic confirms that westerly atmospheric circulation spiralling towards East Antarctica prevailed over the last 200 ka. Moreover, the record of events from Antarctic centres suggests that atmospheric trajectories from West to East Antarctica can also be significant. A few ash layers are geochemically distinct and appear equivalent to levels from Vostok and Dome Fuji deep ice records, located ca. 600 km and ca. 2000 km, respectively, from Dome C on the Antarctic plateau. These layers provide unambiguous markers for future correlation with other Antarctic ice cores and circumpolar marine climatic records. They also provide reliable constraints to get a common timescale by glaciological modelling, and represent a first step towards absolute ice core dating. © 2005 Published by Elsevier B.V. |
author2 |
Narcisi, B Petit, J Delmonte, B Basile Doelsch, I Maggi, V |
format |
Article in Journal/Newspaper |
author |
Narcisi, B Petit, J Basile Doelsch, I DELMONTE, BARBARA MAGGI, VALTER |
author_facet |
Narcisi, B Petit, J Basile Doelsch, I DELMONTE, BARBARA MAGGI, VALTER |
author_sort |
Narcisi, B |
title |
Characteristics and sources of tephra layers in the EPICA-Dome C ice record (East Antarctica): Implications for past atmospheric circulation and ice core stratigraphic correlations |
title_short |
Characteristics and sources of tephra layers in the EPICA-Dome C ice record (East Antarctica): Implications for past atmospheric circulation and ice core stratigraphic correlations |
title_full |
Characteristics and sources of tephra layers in the EPICA-Dome C ice record (East Antarctica): Implications for past atmospheric circulation and ice core stratigraphic correlations |
title_fullStr |
Characteristics and sources of tephra layers in the EPICA-Dome C ice record (East Antarctica): Implications for past atmospheric circulation and ice core stratigraphic correlations |
title_full_unstemmed |
Characteristics and sources of tephra layers in the EPICA-Dome C ice record (East Antarctica): Implications for past atmospheric circulation and ice core stratigraphic correlations |
title_sort |
characteristics and sources of tephra layers in the epica-dome c ice record (east antarctica): implications for past atmospheric circulation and ice core stratigraphic correlations |
publisher |
Elsevier |
publishDate |
2005 |
url |
http://hdl.handle.net/10281/17863 https://doi.org/10.1016/j.epsl.2005.09.005 |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica EPICA ice core Marie Byrd Land South Atlantic Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica EPICA ice core Marie Byrd Land South Atlantic Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000233323400006 volume:239 issue:3-4 firstpage:253 lastpage:265 journal:EARTH AND PLANETARY SCIENCE LETTERS http://hdl.handle.net/10281/17863 doi:10.1016/j.epsl.2005.09.005 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-27744452895 |
op_doi |
https://doi.org/10.1016/j.epsl.2005.09.005 |
container_title |
Earth and Planetary Science Letters |
container_volume |
239 |
container_issue |
3-4 |
container_start_page |
253 |
op_container_end_page |
265 |
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1796933887157338112 |