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  • 1. Bonsall, Clive
    et al.
    Cook, Gordon
    Pickard, Catriona
    McSweeney, Kathleen
    Sayle, Kerry
    Bartosiewicz, Laszlo
    Stockholm University, Faculty of Humanities, Department of Archaeology and Classical Studies, Osteoarchaeological Research Laboratory.
    Radovanovic, Ivana
    Higham, Thomas
    Soficaru, Andrei
    Boroneant, Adina
    Food for Thought: Re-Assessing Mesolithic Diets in the Iron Gates2015In: Radiocarbon, ISSN 0033-8222, E-ISSN 1945-5755, Vol. 57, no 4, p. 689-699Article in journal (Refereed)
    Abstract [en]

    Stable isotope ratios of carbon, nitrogen, and sulfur in human bone collagen are used routinely to aid in the reconstruction of ancient diets. Isotopic analysis of human remains from sites in the Iron Gates section of the Lower Danube Valley has led to conflicting interpretations of Mesolithic diets in this key region of southeast Europe. One view (Bonsall et al. 1997, 2004) is that diets were based mainly on riverine resources throughout the Mesolithic. A competing hypothesis (Nehlich et al. 2010) argues that Mesolithic diets were more varied with at least one Early Mesolithic site showing an emphasis on terrestrial resources, and riverine resources only becoming dominant in the Later Mesolithic. The present article revisits this issue, discussing the stable isotope data in relation to archaeozoological and radiocarbon evidence.

  • 2.
    Dury, Jack P. R.
    et al.
    Stockholm University, Faculty of Humanities, Department of Archaeology and Classical Studies. University of Groningen, The Netherlands.
    Eriksson, Gunilla
    Stockholm University, Faculty of Humanities, Department of Archaeology and Classical Studies.
    Fjellström, Markus
    Stockholm University, Faculty of Humanities, Department of Archaeology and Classical Studies.
    Wallerström, Thomas
    Lidén, Kerstin
    Stockholm University, Faculty of Humanities, Department of Archaeology and Classical Studies.
    CONSIDERATION OF FRESHWATER AND MULTIPLE MARINE RESERVOIR EFFECTS: DATING OF INDIVIDUALS WITH MIXED DIETS FROM NORTHERN SWEDEN2018In: Radiocarbon, ISSN 0033-8222, E-ISSN 1945-5755, Vol. 60, no 5, p. 1561-1585Article in journal (Refereed)
    Abstract [en]

    Human burials from the cemetery at the Rounala church, northern Sweden, were radiocarbon (C-14) dated to shed light on the use of the cemetery. Carbon, nitrogen and sulfur stable isotope analysis of bone collagen from 19 distinct individuals indicated that these individuals had a mixed diet consisting of freshwater, marine and terrestrial resources. Dietary modeling using FRUITS was employed to calculate the contributions of the different resources for each individual. These data were then used to calculate individual Delta R values, taking into account freshwater and multiple marine reservoir effects, the latter caused by Baltic and Atlantic marine dietary inputs, respectively. C-14 dating of tissues from modern freshwater fish species demonstrate a lack of a freshwater reservoir effect in the area. Two OxCal models were used to provide endpoint age estimates. The calibrated data suggest that the site's cemetery was most likely in use already from the 14th century, and perhaps until at least the late 18th century.

  • 3. Szidat, S.
    et al.
    Bench, G.
    Bernardoni, V.
    Calzolai, G.
    Czimczik, C. I.
    Derendorp, L.
    Dusek, U.
    Elder, K.
    Fedi, M. E.
    Genberg, J.
    Gustafsson, Örjan
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Kirillova, Elena
    Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
    Kondo, M.
    McNichol, A. P.
    Perron, N.
    Santos, G. M.
    Stenstrom, K.
    Swietlicki, E.
    Uchida, M.
    Vecchi, R.
    Wacker, L.
    Zhang, Y. L.
    Prévôt, A. S. H.
    Intercomparison of 14C Analysis of Carbonaceous Aerosols: Exercise 20092013In: Radiocarbon, ISSN 0033-8222, E-ISSN 1945-5755, Vol. 55, no 2-3, p. 1496-1509Article in journal (Refereed)
    Abstract [en]

    Radiocarbon analysis of the carbonaceous aerosol allows an apportionment of fossil and non-fossil sources of airborne particulate matter (PM). A chemical separation of total carbon (TC) into its subfractions organic carbon (OC) and elemental carbon (EC) refines this powerful technique, as OC and EC originate from different sources and undergo different processes in the atmosphere. Although C-14 analysis of TC, EC, and OC has recently gained increasing attention, interlaboratory quality assurance measures have largely been missing, especially for the isolation of EC and OC. In this work, we present results from an intercomparison of 9 laboratories for C-14 analysis of carbonaceous aerosol samples on quartz fiber filters. Two ambient PM samples and 1 reference material (RM 8785) were provided with representative filter blanks. All laboratories performed C-14 determinations of TC and a subset of isolated EC and OC for isotopic measurement. In general, C-14 measurements of TC and OC agreed acceptably well between the laboratories, i.e. for TC within 0.015-0.025 (FC)-C-14 for the ambient filters and within 0.041 (FC)-C-14 for RM 8785. Due to inhomogeneous filter loading, RM 8785 demonstrated only limited applicability as a reference material for C-14 analysis of carbonaceous aerosols. C-14 analysis of EC revealed a large deviation between the laboratories of 28-79% as a consequence of different separation techniques. This result indicates a need for further discussion on optimal methods of EC isolation for C-14 analysis and a second stage of this intercomparison.

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