Deep ice as a geochemical reactor: insights from iron speciation and mineralogy of dust in the Talos Dome ice core (East Antarctica)
Thanks to its insolubility, mineral dust is considered a stable proxy in polar ice cores. With this study we show that the Talos Dome ice core (TALDICE, Ross Sea sector of East Antarctica) displays evident and progressive signs of post-depositional processes affecting the mineral dust record below 1...
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Copernicus Publications
2021
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00058389 2023-05-15T13:37:33+02:00 Deep ice as a geochemical reactor: insights from iron speciation and mineralogy of dust in the Talos Dome ice core (East Antarctica) Baccolo, Giovanni Delmonte, Barbara Di Stefano, Elena Cibin, Giannantonio Crotti, Ilaria Frezzotti, Massimo Hampai, Dariush Iizuka, Yoshinori Marcelli, Augusto Maggi, Valter 2021-10 electronic https://doi.org/10.5194/tc-15-4807-2021 https://noa.gwlb.de/receive/cop_mods_00058389 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058034/tc-15-4807-2021.pdf https://tc.copernicus.org/articles/15/4807/2021/tc-15-4807-2021.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-15-4807-2021 https://noa.gwlb.de/receive/cop_mods_00058389 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058034/tc-15-4807-2021.pdf https://tc.copernicus.org/articles/15/4807/2021/tc-15-4807-2021.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2021 ftnonlinearchiv https://doi.org/10.5194/tc-15-4807-2021 2022-02-08T22:33:06Z Thanks to its insolubility, mineral dust is considered a stable proxy in polar ice cores. With this study we show that the Talos Dome ice core (TALDICE, Ross Sea sector of East Antarctica) displays evident and progressive signs of post-depositional processes affecting the mineral dust record below 1000 m deep. We apply a suite of established and cutting-edge techniques to investigate the properties of dust in TALDICE, ranging from concentration and grain size to elemental composition and Fe mineralogy. Results show that through acidic/oxidative weathering, the conditions of deep ice at Talos Dome promote the dissolution of specific minerals and the englacial formation of others, affecting primitive dust features. The expulsion of acidic atmospheric species from ice grains and their concentration in localized environments is likely the main process responsible for englacial reactions. Deep ice can be seen as a “geochemical reactor” capable of fostering complex reactions which involve both soluble and insoluble impurities. Fe-bearing minerals can efficiently help in exploring such transformations. Article in Journal/Newspaper Antarc* Antarctica East Antarctica ice core Ross Sea The Cryosphere Niedersächsisches Online-Archiv NOA East Antarctica Ross Sea Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) The Cryosphere 15 10 4807 4822 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Baccolo, Giovanni Delmonte, Barbara Di Stefano, Elena Cibin, Giannantonio Crotti, Ilaria Frezzotti, Massimo Hampai, Dariush Iizuka, Yoshinori Marcelli, Augusto Maggi, Valter Deep ice as a geochemical reactor: insights from iron speciation and mineralogy of dust in the Talos Dome ice core (East Antarctica) |
topic_facet |
article Verlagsveröffentlichung |
description |
Thanks to its insolubility, mineral dust is considered a stable proxy in polar ice cores. With this study we show that the Talos Dome ice core (TALDICE, Ross Sea sector of East Antarctica) displays evident and progressive signs of post-depositional processes affecting the mineral dust record below 1000 m deep. We apply a suite of established and cutting-edge techniques to investigate the properties of dust in TALDICE, ranging from concentration and grain size to elemental composition and Fe mineralogy. Results show that through acidic/oxidative weathering, the conditions of deep ice at Talos Dome promote the dissolution of specific minerals and the englacial formation of others, affecting primitive dust features. The expulsion of acidic atmospheric species from ice grains and their concentration in localized environments is likely the main process responsible for englacial reactions. Deep ice can be seen as a “geochemical reactor” capable of fostering complex reactions which involve both soluble and insoluble impurities. Fe-bearing minerals can efficiently help in exploring such transformations. |
format |
Article in Journal/Newspaper |
author |
Baccolo, Giovanni Delmonte, Barbara Di Stefano, Elena Cibin, Giannantonio Crotti, Ilaria Frezzotti, Massimo Hampai, Dariush Iizuka, Yoshinori Marcelli, Augusto Maggi, Valter |
author_facet |
Baccolo, Giovanni Delmonte, Barbara Di Stefano, Elena Cibin, Giannantonio Crotti, Ilaria Frezzotti, Massimo Hampai, Dariush Iizuka, Yoshinori Marcelli, Augusto Maggi, Valter |
author_sort |
Baccolo, Giovanni |
title |
Deep ice as a geochemical reactor: insights from iron speciation and mineralogy of dust in the Talos Dome ice core (East Antarctica) |
title_short |
Deep ice as a geochemical reactor: insights from iron speciation and mineralogy of dust in the Talos Dome ice core (East Antarctica) |
title_full |
Deep ice as a geochemical reactor: insights from iron speciation and mineralogy of dust in the Talos Dome ice core (East Antarctica) |
title_fullStr |
Deep ice as a geochemical reactor: insights from iron speciation and mineralogy of dust in the Talos Dome ice core (East Antarctica) |
title_full_unstemmed |
Deep ice as a geochemical reactor: insights from iron speciation and mineralogy of dust in the Talos Dome ice core (East Antarctica) |
title_sort |
deep ice as a geochemical reactor: insights from iron speciation and mineralogy of dust in the talos dome ice core (east antarctica) |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-4807-2021 https://noa.gwlb.de/receive/cop_mods_00058389 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058034/tc-15-4807-2021.pdf https://tc.copernicus.org/articles/15/4807/2021/tc-15-4807-2021.pdf |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
East Antarctica Ross Sea Talos Dome |
geographic_facet |
East Antarctica Ross Sea Talos Dome |
genre |
Antarc* Antarctica East Antarctica ice core Ross Sea The Cryosphere |
genre_facet |
Antarc* Antarctica East Antarctica ice core Ross Sea The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-15-4807-2021 https://noa.gwlb.de/receive/cop_mods_00058389 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058034/tc-15-4807-2021.pdf https://tc.copernicus.org/articles/15/4807/2021/tc-15-4807-2021.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-15-4807-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
10 |
container_start_page |
4807 |
op_container_end_page |
4822 |
_version_ |
1766093973590376448 |