Defining the Geochemical composition of the EPICA Dome C ice core dust during the last glacial-interglacial cycle
The major element composition of the insoluble, windborne long-range dust archived in the European Project for Ice Coring in Antarctica Dome C ice core has been determined by Particle Induced X-ray Emission analyses. The geochemistry of dust from the last glacial maximum (LGM) and from the Holocene...
Published in: | Geochemistry, Geophysics, Geosystems |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
American Geophysical Union
|
Subjects: | |
Online Access: | http://hdl.handle.net/1885/26951 https://doi.org/10.1029/2008GC002023 https://openresearch-repository.anu.edu.au/bitstream/1885/26951/5/Marino.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/26951/7/01_Marino_Defining_the_Geochemical_2008.pdf.jpg |
id |
ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/26951 |
---|---|
record_format |
openpolar |
spelling |
ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/26951 2024-01-14T10:00:37+01:00 Defining the Geochemical composition of the EPICA Dome C ice core dust during the last glacial-interglacial cycle Marino, Federica Castellano, E. Ceccato, D. De Deckker, Patrick Delmonte, B. Ghermandi, G. Maggi, V Petit, J-R Revel-Rolland, M Udisti, R. http://hdl.handle.net/1885/26951 https://doi.org/10.1029/2008GC002023 https://openresearch-repository.anu.edu.au/bitstream/1885/26951/5/Marino.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/26951/7/01_Marino_Defining_the_Geochemical_2008.pdf.jpg unknown American Geophysical Union 1525-2027 http://hdl.handle.net/1885/26951 doi:10.1029/2008GC002023 https://openresearch-repository.anu.edu.au/bitstream/1885/26951/5/Marino.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/26951/7/01_Marino_Defining_the_Geochemical_2008.pdf.jpg Geochemistry, Geophysics, Geosystems. G3 Keywords: Aeolian dust Antarctica Dust sources Ice cores Major elements Paleoclimate Journal article ftanucanberra https://doi.org/10.1029/2008GC002023 2023-12-15T09:36:57Z The major element composition of the insoluble, windborne long-range dust archived in the European Project for Ice Coring in Antarctica Dome C ice core has been determined by Particle Induced X-ray Emission analyses. The geochemistry of dust from the last glacial maximum (LGM) and from the Holocene is discussed in terms of past environmental changes, throughout the last climatic cycle. Antarctic dust from glacial and interglacial climate clearly reveals different geochemical compositions. The weathered crustal-like signature of LGM dust is characterized by a low compositional variability, suggesting a dominant source under the glacial regime. The close correspondence between the major element composition of Antarctic glacial dust and the composition of southern South American sediments supports the hypothesis of a dominant role of this area as major dust supplier during cold conditions. Conversely, the major element composition of Holocene dust displays high variability and high Al content on average. This implies that an additional source could also play some role. Comparison with sizeselected sediments suggests that a contribution from Australia is likely during warm times, when a reduced glacial erosion decreases the primary dust production and a more intense hydrological cycle and larger vegetation cover inactivates dust mobility in a large part of southern South America, weakening its contribution as a massive dust supplier to Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica EPICA ice core Australian National University: ANU Digital Collections Antarctic Geochemistry, Geophysics, Geosystems 9 10 n/a n/a |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: Aeolian dust Antarctica Dust sources Ice cores Major elements Paleoclimate |
spellingShingle |
Keywords: Aeolian dust Antarctica Dust sources Ice cores Major elements Paleoclimate Marino, Federica Castellano, E. Ceccato, D. De Deckker, Patrick Delmonte, B. Ghermandi, G. Maggi, V Petit, J-R Revel-Rolland, M Udisti, R. Defining the Geochemical composition of the EPICA Dome C ice core dust during the last glacial-interglacial cycle |
topic_facet |
Keywords: Aeolian dust Antarctica Dust sources Ice cores Major elements Paleoclimate |
description |
The major element composition of the insoluble, windborne long-range dust archived in the European Project for Ice Coring in Antarctica Dome C ice core has been determined by Particle Induced X-ray Emission analyses. The geochemistry of dust from the last glacial maximum (LGM) and from the Holocene is discussed in terms of past environmental changes, throughout the last climatic cycle. Antarctic dust from glacial and interglacial climate clearly reveals different geochemical compositions. The weathered crustal-like signature of LGM dust is characterized by a low compositional variability, suggesting a dominant source under the glacial regime. The close correspondence between the major element composition of Antarctic glacial dust and the composition of southern South American sediments supports the hypothesis of a dominant role of this area as major dust supplier during cold conditions. Conversely, the major element composition of Holocene dust displays high variability and high Al content on average. This implies that an additional source could also play some role. Comparison with sizeselected sediments suggests that a contribution from Australia is likely during warm times, when a reduced glacial erosion decreases the primary dust production and a more intense hydrological cycle and larger vegetation cover inactivates dust mobility in a large part of southern South America, weakening its contribution as a massive dust supplier to Antarctica. |
format |
Article in Journal/Newspaper |
author |
Marino, Federica Castellano, E. Ceccato, D. De Deckker, Patrick Delmonte, B. Ghermandi, G. Maggi, V Petit, J-R Revel-Rolland, M Udisti, R. |
author_facet |
Marino, Federica Castellano, E. Ceccato, D. De Deckker, Patrick Delmonte, B. Ghermandi, G. Maggi, V Petit, J-R Revel-Rolland, M Udisti, R. |
author_sort |
Marino, Federica |
title |
Defining the Geochemical composition of the EPICA Dome C ice core dust during the last glacial-interglacial cycle |
title_short |
Defining the Geochemical composition of the EPICA Dome C ice core dust during the last glacial-interglacial cycle |
title_full |
Defining the Geochemical composition of the EPICA Dome C ice core dust during the last glacial-interglacial cycle |
title_fullStr |
Defining the Geochemical composition of the EPICA Dome C ice core dust during the last glacial-interglacial cycle |
title_full_unstemmed |
Defining the Geochemical composition of the EPICA Dome C ice core dust during the last glacial-interglacial cycle |
title_sort |
defining the geochemical composition of the epica dome c ice core dust during the last glacial-interglacial cycle |
publisher |
American Geophysical Union |
url |
http://hdl.handle.net/1885/26951 https://doi.org/10.1029/2008GC002023 https://openresearch-repository.anu.edu.au/bitstream/1885/26951/5/Marino.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/26951/7/01_Marino_Defining_the_Geochemical_2008.pdf.jpg |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core |
op_source |
Geochemistry, Geophysics, Geosystems. G3 |
op_relation |
1525-2027 http://hdl.handle.net/1885/26951 doi:10.1029/2008GC002023 https://openresearch-repository.anu.edu.au/bitstream/1885/26951/5/Marino.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/26951/7/01_Marino_Defining_the_Geochemical_2008.pdf.jpg |
op_doi |
https://doi.org/10.1029/2008GC002023 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
9 |
container_issue |
10 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1788066498036629504 |