Document Detail


The atmospheric lead record preserved in lagoon sediments at a remote equatorial Pacific location: Palmyra Atoll, northern Line Islands.
MedLine Citation:
PMID:  21094962     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Anthropogenic lead (Pb) inputs to the atmosphere increased greatly over the past century and now dominate Pb supply to the oceans. However, the Pb content of sediments across the equatorial Pacific region is relatively unknown, and data exist only for deep sea sites where Pb deposition lags surface water inputs by up to a century. Here we present ICP-MS analyses of Pb of a core from a lagoon at Palmyra Atoll, northern Line Islands, that spans approximately the past 160years. The non-bioturbated sediments of the euxinic lagoon, coupled with rapid rates of deposition, provide a unique fine-scale record of atmospheric Pb supply at a remote Pacific location. These first observations of historic Pb sedimentation in an atoll lagoon reveal a 63-fold increase in Pb flux to sediments during the past century and correlate directly with the North American consumption of leaded gasoline that began in 1926.
Authors:
John D Collen; Joel A Baker; Robert B Dunbar; Uwe Rieser; Jonathan P Gardner; David W Garton; Kylie J Christiansen
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2010-11-20
Journal Detail:
Title:  Marine pollution bulletin     Volume:  -     ISSN:  1879-3363     ISO Abbreviation:  Mar. Pollut. Bull.     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0260231     Medline TA:  Mar Pollut Bull     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Affiliation:
Centre for Marine Environmental and Economic Research, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand; School of Geography, Environment and Earth Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand.
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