Provenance of dust to Antarctica:  A lead isotopic perspective

Stefania Gili; Diego M. Gaiero; Steven L. Goldstein; Farid Chemale Jr; Edinei Koester; Jason Jweda; Paul Travis Vallelonga; Michael R. Kaplan

doi:10.1002/2016gl068244

Provenance of dust to Antarctica: A lead isotopic perspective

Stefania Gili, Diego M. Gaiero, Steven L. Goldstein, Farid Chemale Jr, Edinei Koester, Jason Jweda, Paul Travis Vallelonga, Michael R. Kaplan

Physics of Ice, Climate and Earth

25 Citations (Scopus)

Abstract

Antarctic ice preserves an ~800 kyr record of dust activity in the Southern Hemisphere. Major efforts have been dedicated to elucidate the origin of this material in order to gain greater insight into the atmospheric dust cycle. On the basis of Pb isotopes in Antarctic dust samples and potential sources, this contribution demonstrates for the first time that Patagonia is the main contributor of dust to Antarctica during interglacial periods as well as glacials, although the potential importance of Tierra del Fuego remains unclear because of its geochemical similarities to Patagonia. An important new finding is that the Puna-Altiplano sector of the continent is a second important dust source to eastern Antarctica during both glacials and interglacials, being more prominent during interglacials. The data indicate South America is the primary dust source to Antarctica during both glacials and interglacials.

Original language	English
Journal	Geophysical Research Letters
Volume	43
Pages (from-to)	2291-2298
ISSN	0094-8276
DOIs	https://doi.org/10.1002/2016gl068244
Publication status	Published - 16 Mar 2016

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Cite this

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title = "Provenance of dust to Antarctica: A lead isotopic perspective",

abstract = "Antarctic ice preserves an ~800 kyr record of dust activity in the Southern Hemisphere. Major efforts have been dedicated to elucidate the origin of this material in order to gain greater insight into the atmospheric dust cycle. On the basis of Pb isotopes in Antarctic dust samples and potential sources, this contribution demonstrates for the first time that Patagonia is the main contributor of dust to Antarctica during interglacial periods as well as glacials, although the potential importance of Tierra del Fuego remains unclear because of its geochemical similarities to Patagonia. An important new finding is that the Puna-Altiplano sector of the continent is a second important dust source to eastern Antarctica during both glacials and interglacials, being more prominent during interglacials. The data indicate South America is the primary dust source to Antarctica during both glacials and interglacials.",

author = "Stefania Gili and Gaiero, {Diego M.} and Goldstein, {Steven L.} and {Chemale Jr}, Farid and Edinei Koester and Jason Jweda and Vallelonga, {Paul Travis} and Kaplan, {Michael R.}",

year = "2016",

month = mar,

day = "16",

doi = "10.1002/2016gl068244",

language = "English",

volume = "43",

pages = "2291--2298",

journal = "Geophysical Research Letters",

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TY - JOUR

T1 - Provenance of dust to Antarctica

T2 - A lead isotopic perspective

AU - Gili, Stefania

AU - Gaiero, Diego M.

AU - Goldstein, Steven L.

AU - Chemale Jr, Farid

AU - Koester, Edinei

AU - Jweda, Jason

AU - Vallelonga, Paul Travis

AU - Kaplan, Michael R.

PY - 2016/3/16

Y1 - 2016/3/16

N2 - Antarctic ice preserves an ~800 kyr record of dust activity in the Southern Hemisphere. Major efforts have been dedicated to elucidate the origin of this material in order to gain greater insight into the atmospheric dust cycle. On the basis of Pb isotopes in Antarctic dust samples and potential sources, this contribution demonstrates for the first time that Patagonia is the main contributor of dust to Antarctica during interglacial periods as well as glacials, although the potential importance of Tierra del Fuego remains unclear because of its geochemical similarities to Patagonia. An important new finding is that the Puna-Altiplano sector of the continent is a second important dust source to eastern Antarctica during both glacials and interglacials, being more prominent during interglacials. The data indicate South America is the primary dust source to Antarctica during both glacials and interglacials.

AB - Antarctic ice preserves an ~800 kyr record of dust activity in the Southern Hemisphere. Major efforts have been dedicated to elucidate the origin of this material in order to gain greater insight into the atmospheric dust cycle. On the basis of Pb isotopes in Antarctic dust samples and potential sources, this contribution demonstrates for the first time that Patagonia is the main contributor of dust to Antarctica during interglacial periods as well as glacials, although the potential importance of Tierra del Fuego remains unclear because of its geochemical similarities to Patagonia. An important new finding is that the Puna-Altiplano sector of the continent is a second important dust source to eastern Antarctica during both glacials and interglacials, being more prominent during interglacials. The data indicate South America is the primary dust source to Antarctica during both glacials and interglacials.

U2 - 10.1002/2016gl068244

DO - 10.1002/2016gl068244

M3 - Journal article

SN - 0094-8276

VL - 43

SP - 2291

EP - 2298

JO - Geophysical Research Letters

JF - Geophysical Research Letters

ER -

Provenance of dust to Antarctica: A lead isotopic perspective

Abstract

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