Articles | Volume 15, issue 10
https://doi.org/10.5194/tc-15-4807-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-15-4807-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
| 
12 Oct 2021
Research article | Highlight paper |
| 12 Oct 2021
| 12 Oct 2021
Deep ice as a geochemical reactor: insights from iron speciation and mineralogy of dust in the Talos Dome ice core (East Antarctica)
Giovanni Baccolo
CORRESPONDING AUTHOR
Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, Italy
Milano-Bicocca Section, Istituto Nazionale di Fisica Nucleare,
Milan, Italy
Barbara Delmonte
Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, Italy
Elena Di Stefano
Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, Italy
Milano-Bicocca Section, Istituto Nazionale di Fisica Nucleare,
Milan, Italy
Department of Physical Sciences, Earth and Environment, University of Siena, Siena, Italy
Giannantonio Cibin
Diamond Light Source, Harwell Science and Innovation Campus, Didcot, UK
Ilaria Crotti
Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Venice, Italy
Laboratoire des Sciences du Climat et de l'Environnement
IPSL, CEA-CNRS-UVSQ, Gif-sur-Yvette, France
Massimo Frezzotti
Department of Science, Roma Tre University, Rome, Italy
Dariush Hampai
Laboratori Nazionali di
Frascati, Istituto Nazionale di Fisica Nucleare, Frascati, Italy
Yoshinori Iizuka
Institute of Low Temperature Science, Hokkaido University, Sapporo,
Japan
Augusto Marcelli
Laboratori Nazionali di
Frascati, Istituto Nazionale di Fisica Nucleare, Frascati, Italy
Rome International Center for Materials Science – Superstripes, Rome, Italy
Valter Maggi
Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, Italy
Milano-Bicocca Section, Istituto Nazionale di Fisica Nucleare,
Milan, Italy
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Filipe Gaudie Ley Lindau, Jefferson Cardia Simões, Rafael da Rocha Ribeiro, Patrick Ginot, Barbara Delmonte, Giovanni Baccolo, Stanislav Kutuzov, Valter Maggi, and Edson Ramirez
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Manuscript not accepted for further review
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Glaciers are important freshwater sources in the Tropical Andes. Their retreat has been accelerating since the 1980s. This exposes fresh glacial sediments and facilitates the transport of coarse dust particles to the Nevado Illimani summit. Both the glacial area of Illimani and its ice core record of coarse dust particles respond to warmer conditions across the southern tropical Andes, and drier conditions over the Amazon basin.
Cited articles
Albani, S., Delmonte, B., Maggi, V., Baroni, C., Petit, J.-R., Stenni, B., Mazzola, C., and Frezzotti, M.: Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales, Clim. Past, 8, 741–750, https://doi.org/10.5194/cp-8-741-2012, 2012a.
Albani, S., Mahowald, N. M., Delmonte, B.,Maggi, V., and Winckler, G.: Comparing modeled and observed changes in mineral dust transport and deposition to Antarctica between the Last Glacial Maximum and current
climates, Clim. Dynam., 38, 1731–1755, 2012b.
Aubry, L., Roperch, P., de Urreiztieta, M., Rossello, E., and Chauvin, A.:
Paleomagnetic study along the southeastern edge of the Altiplano- Puna Plateau: Neogene tectonic rotations, J. Geophys. Res.-Solid, 101, 17833–17899, 1996.
Baccolo, G., Cibin, G., Delmonte, B., Hampai, D., Marcelli, A., Di Stefano,
E., Macis, S., and Maggi, V.: The contribution of synchrotron light for the
characterization of atmospheric mineral dust in deep ice cores: preliminary
results from the talos dome ice core (east antarctica), Condens. Matter, 3,
25, https://doi.org/10.3390/condmat3030025, 2018a.
Baccolo, G., Delmonte, B., Albani, S., Baroni, C., Cibin, G., Frezzotti, M.,
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Short summary
As scientists are pushing efforts to recover deep ice cores to extend paleoclimatic reconstructions, it is now essential to explore deep ice. The latter was considered a relatively stable environment, but this view is changing. This study shows that the conditions of deep ice promote the interaction between soluble and insoluble impurities, favoring complex geochemical reactions that lead to the englacial dissolution and precipitation of specific minerals present in atmospheric mineral dust.
As scientists are pushing efforts to recover deep ice cores to extend paleoclimatic...
