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The occurrence of zinc in Antarctic ancient ice and recent snow

Boutron, Claude F. and Patterson, Clair C. and Barkov, N. I. (1990) The occurrence of zinc in Antarctic ancient ice and recent snow. Earth and Planetary Science Letters, 101 (2-4). pp. 248-259. ISSN 0012-821X. https://resolver.caltech.edu/CaltechAUTHORS:20140523-090114711

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Abstract

Concentrations of zinc (Zn) have been measured in various sections of the Dome C and Vostok deep Antarctic ice cores, whose ages range from 3850 to 155,000 years BP, and in several large-size surface Antarctic snow blocks collected in Adelie Land and at the geographic South Pole. All the samples were mechanically decontaminated, and detailed outside-inside variation profiles were drawn for most of them then allowing us to clearly establish the accuracy of the data obtained from the analysis of the most central parts of each individual core section or snow block. Natural Zn concentrations are found to have strongly varied in Antarctic ice during the past 155,000 years, the highest values (up to about 100 pg Zn/g) being observed during the Last Glacial Maximum and possibly during the end of the next to last ice age. Wind-blown dust from crustal rock and soil appears to be the main natural source of Zn during the glacial periods, especially the Last Glacial Maximum. Zn concentrations in present-day Antarctic snow from central East Antarctica, about 5 pg Zn/g, are found to be comparable with those in Holocene ice several thousand years old, which evidences that the Antarctic tropospheric cell is still little affected by anthropogenic Zn.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0012-821X(90)90157-SDOIArticle
http://www.sciencedirect.com/science/article/pii/0012821X9090157SPublisherArticle
Additional Information:© 1990 Elsevier Science Publishers B.V., Amsterdam. Received March 12, 1990; revised version accepted June 29, 1990. This work was supported in France by the Ministère de l'Environnement, the University of Grenoble, the Terres Australes et Antarctiques Françaises and the Expeditions Polaires Françaises, in the USA by the Division of Polar Programs of the US National Science Foundation (Grant DPP 840-3490), and in the USSR by the Soviet Antarctic Expeditions. We thank D. Settle for advice and help during samples decontamination, U. Görlach, M. Legrand and E. Silvente for performing the SO_4 measurements.
Funders:
Funding AgencyGrant Number
Ministère de l'EnvironnementUNSPECIFIED
University of GrenobleUNSPECIFIED
Terres Australes et Antarctiques FrançaisesUNSPECIFIED
Expéditions Polaires FrançaisesUNSPECIFIED
NSF Division of Polar ProgramsDPP 840-3490
Soviet Antarctic ExpeditionsUNSPECIFIED
Issue or Number:2-4
Record Number:CaltechAUTHORS:20140523-090114711
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140523-090114711
Official Citation:Claude F. Boutron, Clair C. Patterson, N.I. Barkov, The occurrence of zinc in Antarctic ancient ice and recent snow, Earth and Planetary Science Letters, Volume 101, Issues 2–4, December 1990, Pages 248-259, ISSN 0012-821X, http://dx.doi.org/10.1016/0012-821X(90)90157-S. (http://www.sciencedirect.com/science/article/pii/0012821X9090157S)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45895
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:27 May 2014 15:58
Last Modified:03 Oct 2019 06:37

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