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Varved sediments in the Kalix River estuary, northern Sweden
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
1994 (English)In: Aqua Fennica, ISSN 0356-7133, Vol. 24, no 2, p. 163-169Article in journal (Refereed) Published
Abstract [en]

Two virtually undisturbed cores collected by using the crust-freezing technique revealed the occurrence of varved sediments in the Kalix River estuary. Sedimentation rates were determined by super(137)Cs measurements, varve-counting and also by sediment traps. Each varve consists of a grey, predominantly clastic spring flood layer and a brown layer relatively rich in Fe (III) oxides, deposited during the rest of the year. The varve thickness is 5-13 mm, corresponding to a sedimentation rate of 96-227 mg dry sediment/cm super(2)/yr. Fall-out from the Chernobyl accident resulted in a 7-10 fold increase of super(137)Cs in the layer deposited during the summer and autumn of 1986. During the period 1975-1991, one or two major resuspension events occurred in the estuary

Place, publisher, year, edition, pages
1994. Vol. 24, no 2, p. 163-169
National Category
Geochemistry
Research subject
Applied Geology
Identifiers
URN: urn:nbn:se:ltu:diva-5085Local ID: 31b04390-b601-11dc-b7e3-000ea68e967bOAI: oai:DiVA.org:ltu-5085DiVA, id: diva2:977959
Note
Godkänd; 1994; 20071229 (anwi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Widerlund, Anders

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