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dc.contributor.authorAscough, P. L.
dc.contributor.authorCook, G. T.
dc.contributor.authorChurch, M. J.
dc.contributor.authorDunbar, E.
dc.contributor.authorEinarsson, Á.
dc.contributor.authorMcGovern, T. H.
dc.contributor.authorDugmore, A. J.
dc.contributor.authorPerdikaris, S.
dc.contributor.authorHastie, H.
dc.contributor.authorFriðoriksson, A.
dc.contributor.authorGestsdóttir, H.
dc.date.accessioned2021-02-11T21:23:20Z
dc.date.available2021-02-11T21:23:20Z
dc.date.issued2010-01-01
dc.identifier.citationAscough, P., Cook, G. T., Church, M. J., Dunbar, E., Einarsson, Á., McGovern, T. H., ... & Gestsdóttir, H. (2010). Temporal and spatial variations in freshwater 14C reservoir effects: Lake Mývatn, northern Iceland. Radiocarbon, 52(3), 1098-1112.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S003382220004618X
dc.identifier.urihttp://hdl.handle.net/10150/654343
dc.descriptionFrom the 20th International Radiocarbon Conference held in Kona, Hawaii, USA, May 31-June 3, 2009.
dc.description.abstractLake Mvatn is an interior highland lake in northern Iceland that forms a unique ecosystem of international scientific importance and is surrounded by a landscape rich in archaeological and paleoenvironmental sites. A significant freshwater reservoir effect (FRE) has been identified in carbon from the lake at some Viking (about AD 870-1000) archaeological sites in the wider region (Mvatnssveit). Previous accelerator mass spectrometry (AMS) measurements indicated this FRE was about 1500-1900 14C yr. Here, we present the results of a study using stable isotope and 14C measurements to quantify the Mvatn FRE for both the Viking and modern periods. This work has identified a temporally variable FRE that is greatly in excess of previous assessments. New, paired samples of contemporaneous bone from terrestrial herbivores and omnivores (including humans) from Viking sites demonstrate at least some omnivore diets incorporated sufficient freshwater resources to result in a herbivore-omnivore age offset of up to 400 14C yr. Modern samples of benthic detritus, aquatic plants, zooplankton, invertebrates, and freshwater fish indicate an FRE in excess of 5000 14C yr in some species. Likely geothermal mechanisms for this large FRE are discussed, along with implications for both chronological reconstruction and integrated investigation of stable and radioactive isotopes.
dc.language.isoen
dc.publisherDepartment of Geosciences, The University of Arizona
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © by the Arizona Board of Regents on behalf of the University of Arizona. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleTemporal and Spatial Variations in Freshwater 14C Reservoir Effects: Lake Mývatn, Northern Iceland
dc.typeProceedings
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.collectioninformationThe Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume52
dc.source.issue3
dc.source.beginpage1098
dc.source.endpage1112
refterms.dateFOA2021-02-11T21:23:20Z


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