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  • 1.
    De Vleeschouwer, Francois
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Renson, Virginie
    Claeys, Philippe
    Nys, Karin
    Bindler, Richard
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Quantitative WD-XRF calibration for small ceramic samples and their source material2011In: Geoarchaeology, ISSN 0883-6353, E-ISSN 1520-6548, Vol. 26, no 3, p. 440-450Article in journal (Refereed)
    Abstract [en]

    A wavelength-dispersive X-ray fluorescence (WD-XRF) calibration is developed for small powdered samples (300 mg) with the purpose of analyzing ceramic artifacts that might be available only in limited quantity. This is compared to a conventional calibration using a larger sample mass (2 g). The comparison of elemental intensities obtained in both calibrations shows that the decrease in analyzed sample mass results in a linear decrease in measured intensity for the analyzed elements. This indicates that the small-and large-sample calibrations are comparable. Moreover, the elemental contents of four ceramic sherds and two potential clay sources fall well within the range of the certified reference materials that are the basis of the calibration curves. The advantage with the analytical method presented here is that it is rapid and requires only a small amount of sample that can easily be re-used for further analyses. This method has great potential in ceramic provenance studies. (C) 2011 Wiley Periodicals, Inc.

  • 2.
    Linderholm, Johan
    Umeå University, Faculty of Arts, Archaeology and Sami Studies. Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies, Environmental Archaeology Lab.
    Soil chemical surveying: A path to a deeper understanding of prehistoric sites and societies in Sweden2007In: Geoarchaeology, ISSN 0883-6353, E-ISSN 1520-6548, Vol. 22, no 4, p. 417-438Article in journal (Refereed)
  • 3.
    Linderholm, Johan
    et al.
    Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.
    Geladi, Paul
    Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences, Umeå, Sweden.
    Gorretta, Natalie
    UMR ITAP, IRSTEA, Centre de Montpellier, Montpellier, France.
    Bendoula, Ryad
    UMR ITAP, IRSTEA, Centre de Montpellier, Montpellier, France.
    Gobrecht, Alexia
    UMR ITAP, IRSTEA, Centre de Montpellier, Montpellier, France.
    Near infrared and hyperspectral studies of archaeological stratigraphy and statistical considerations2019In: Geoarchaeology, ISSN 0883-6353, E-ISSN 1520-6548, Vol. 34, no 3, p. 311-321Article in journal (Refereed)
    Abstract [en]

    The paper proposes a methodology based on near‐infrared (NIR) spectrometry for studying stratigraphy and depth profiles in archaeological excavations. The NIR spectra can be used to describe and complement the wet chemical analysis. Soil samples were collected from a 0.8 m deep stratigraphy of a Neolithic site that were analyzed by three different NIR instrumentations. Phosphate‐ and magnetic susceptibility and inductively‐coupled plasma mass spectrometry measurements were also conducted as reference analysis.

    Principal component analysis on the data from three different NIR instrumentations gave useful score plots that allowed grouping of the samples. The results from the lab spectrometer were most useful, although the hyperspectral NIR camera was the fastest method to obtain spectra of many samples from one image. The paper shows how the NIR spectral data can be used for multivariate analysis to get meaningful conclusions on archaeological soils and sediments, especially in terms of understanding site development/phases and soil formation.

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