LEAD ISOTOPIC COMPOSITIONS IN THE EPICA DOME C ICE CORE AND SOUTHERN HEMISPHERE POTENTIAL SOURCE AREAS
A record of Pb isotopic compositions and Pb and Ba concentrations are presented for the EPICA Dome C ice core covering the past 220 ky, indicating the characteristics of dust and volcanic Pb deposition in central East Antarctica. Lead isotopic compositions are also reported in a suite of soil and lo...
Published in: | Quaternary Science Reviews |
---|---|
Main Authors: | , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2010
|
Subjects: | |
Online Access: | http://hdl.handle.net/10278/30065 https://doi.org/10.1016/j.quascirev.2009.06.019 |
id |
ftuniveneziairis:oai:iris.unive.it:10278/30065 |
---|---|
record_format |
openpolar |
spelling |
ftuniveneziairis:oai:iris.unive.it:10278/30065 2024-04-14T08:04:04+00:00 LEAD ISOTOPIC COMPOSITIONS IN THE EPICA DOME C ICE CORE AND SOUTHERN HEMISPHERE POTENTIAL SOURCE AREAS P. VALLELONGA A. WEGNER C. DELMONTE G. BURTON F. VANHAECKE K. J. R. ROSMAN S. HONG C. F. BOUTRON GABRIELLI, PAOLO BALLIANA, Eleonora TURETTA, Clara CESCON, Paolo BARBANTE, Carlo P., Vallelonga Gabrielli, Paolo Balliana, Eleonora A., Wegner C., Delmonte Turetta, Clara G., Burton F., Vanhaecke K. J. R., Rosman S., Hong C. F., Boutron Cescon, Paolo Barbante, Carlo 2010 http://hdl.handle.net/10278/30065 https://doi.org/10.1016/j.quascirev.2009.06.019 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000274958000021 volume:29 firstpage:247 lastpage:255 numberofpages:9 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/10278/30065 doi:10.1016/j.quascirev.2009.06.019 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-73549106471 info:eu-repo/semantics/openAccess Settore CHIM/01 - Chimica Analitica info:eu-repo/semantics/article 2010 ftuniveneziairis https://doi.org/10.1016/j.quascirev.2009.06.019 2024-03-21T18:00:53Z A record of Pb isotopic compositions and Pb and Ba concentrations are presented for the EPICA Dome C ice core covering the past 220 ky, indicating the characteristics of dust and volcanic Pb deposition in central East Antarctica. Lead isotopic compositions are also reported in a suite of soil and loess samples from the Southern Hemisphere (Australia, Southern Africa, Southern South America, New Zealand, Antarctica) in order to evaluate the provenance of dust present in Antarctic ice. Lead isotopic compo-sitions in Dome C ice support the contention that Southern South America was an important source of dust in Antarctica during the last two glacial maxima, and furthermore suggest occasional dust contri-butions from local Antarctic sources. The isotopic signature of Pb in Antarctic ice is altered by the presence of volcanic Pb, inhibiting the evaluation of glacial–interglacial changes in dust sources and the evaluation of Australia as a source of dust to Antarctica. Consequently, an accurate evaluation of the predominant source(s) of Antarctic dust can only be obtained from glacial maxima, when dust-Pb concentrations were greatest. These data confirm that volcanic Pb is present throughout Antarctica and is emitted in a physical phase that is free from Ba, while dust Pb is transported within a matrix containing Ba and other crustal elements Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica EPICA ice core Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Antarctic East Antarctica New Zealand Quaternary Science Reviews 29 1-2 247 255 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
Settore CHIM/01 - Chimica Analitica |
spellingShingle |
Settore CHIM/01 - Chimica Analitica P. VALLELONGA A. WEGNER C. DELMONTE G. BURTON F. VANHAECKE K. J. R. ROSMAN S. HONG C. F. BOUTRON GABRIELLI, PAOLO BALLIANA, Eleonora TURETTA, Clara CESCON, Paolo BARBANTE, Carlo LEAD ISOTOPIC COMPOSITIONS IN THE EPICA DOME C ICE CORE AND SOUTHERN HEMISPHERE POTENTIAL SOURCE AREAS |
topic_facet |
Settore CHIM/01 - Chimica Analitica |
description |
A record of Pb isotopic compositions and Pb and Ba concentrations are presented for the EPICA Dome C ice core covering the past 220 ky, indicating the characteristics of dust and volcanic Pb deposition in central East Antarctica. Lead isotopic compositions are also reported in a suite of soil and loess samples from the Southern Hemisphere (Australia, Southern Africa, Southern South America, New Zealand, Antarctica) in order to evaluate the provenance of dust present in Antarctic ice. Lead isotopic compo-sitions in Dome C ice support the contention that Southern South America was an important source of dust in Antarctica during the last two glacial maxima, and furthermore suggest occasional dust contri-butions from local Antarctic sources. The isotopic signature of Pb in Antarctic ice is altered by the presence of volcanic Pb, inhibiting the evaluation of glacial–interglacial changes in dust sources and the evaluation of Australia as a source of dust to Antarctica. Consequently, an accurate evaluation of the predominant source(s) of Antarctic dust can only be obtained from glacial maxima, when dust-Pb concentrations were greatest. These data confirm that volcanic Pb is present throughout Antarctica and is emitted in a physical phase that is free from Ba, while dust Pb is transported within a matrix containing Ba and other crustal elements |
author2 |
P., Vallelonga Gabrielli, Paolo Balliana, Eleonora A., Wegner C., Delmonte Turetta, Clara G., Burton F., Vanhaecke K. J. R., Rosman S., Hong C. F., Boutron Cescon, Paolo Barbante, Carlo |
format |
Article in Journal/Newspaper |
author |
P. VALLELONGA A. WEGNER C. DELMONTE G. BURTON F. VANHAECKE K. J. R. ROSMAN S. HONG C. F. BOUTRON GABRIELLI, PAOLO BALLIANA, Eleonora TURETTA, Clara CESCON, Paolo BARBANTE, Carlo |
author_facet |
P. VALLELONGA A. WEGNER C. DELMONTE G. BURTON F. VANHAECKE K. J. R. ROSMAN S. HONG C. F. BOUTRON GABRIELLI, PAOLO BALLIANA, Eleonora TURETTA, Clara CESCON, Paolo BARBANTE, Carlo |
author_sort |
P. VALLELONGA |
title |
LEAD ISOTOPIC COMPOSITIONS IN THE EPICA DOME C ICE CORE AND SOUTHERN HEMISPHERE POTENTIAL SOURCE AREAS |
title_short |
LEAD ISOTOPIC COMPOSITIONS IN THE EPICA DOME C ICE CORE AND SOUTHERN HEMISPHERE POTENTIAL SOURCE AREAS |
title_full |
LEAD ISOTOPIC COMPOSITIONS IN THE EPICA DOME C ICE CORE AND SOUTHERN HEMISPHERE POTENTIAL SOURCE AREAS |
title_fullStr |
LEAD ISOTOPIC COMPOSITIONS IN THE EPICA DOME C ICE CORE AND SOUTHERN HEMISPHERE POTENTIAL SOURCE AREAS |
title_full_unstemmed |
LEAD ISOTOPIC COMPOSITIONS IN THE EPICA DOME C ICE CORE AND SOUTHERN HEMISPHERE POTENTIAL SOURCE AREAS |
title_sort |
lead isotopic compositions in the epica dome c ice core and southern hemisphere potential source areas |
publishDate |
2010 |
url |
http://hdl.handle.net/10278/30065 https://doi.org/10.1016/j.quascirev.2009.06.019 |
geographic |
Antarctic East Antarctica New Zealand |
geographic_facet |
Antarctic East Antarctica New Zealand |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000274958000021 volume:29 firstpage:247 lastpage:255 numberofpages:9 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/10278/30065 doi:10.1016/j.quascirev.2009.06.019 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-73549106471 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2009.06.019 |
container_title |
Quaternary Science Reviews |
container_volume |
29 |
container_issue |
1-2 |
container_start_page |
247 |
op_container_end_page |
255 |
_version_ |
1796300434370985984 |