The Neolithic Corded Ware Culture (CWC) complex spread across the Baltic Sea region ca. 2900/2800-2300/2000 BCE. Whether this cultural adaptation was driven by migration or diffusion remains widely debated. To gather evidence for contact and movement in the CWC material culture, grog-tempered CWC pots from 24 archaeological sites in southern Baltoscandia (Estonia and the southern regions of Finland and Sweden) were sampled for geochemical and micro-structural analyses. Scanning electron micro-scopy with energy dispersive spectrometry (SEM-EDS) and particle-induced X-ray emission (PIXE) were used for geochemical discrimination of the ceramic fabrics to identify regional CWC pottery-manufacturing traditions and ceramic exchange. Major and minor element concentrations in the ceramic body matrices of 163 individual vessels and grog temper (crushed pottery) present in the ceramic fabrics were measured by SEM-EDS. Furthermore, the high-sensitivity PIXE technique was applied for group confirmation. The combined pot and grog matrix data reveal eight geochemical clusters. At least five geochemical groups appeared to be associated with specific find locations and regional manufacturing traditions. The results indicated complex inter-site and cross-Baltic Sea pottery exchange patterns, which became more defined through the grog data, i.e., the previous generations of pots. The CWC pottery exhibited high technological standards at these latitudes, which, together with the identified exchange patterns and the existing evidence of mobility based on human remains elsewhere in the CWC complex, is indicative of the relocation of skilled potters, possibly through exogamy. An analytical protocol for the geochemical discrimination of grog-tempered pottery, and its challenges and possibilities, is presented. explore the life histories of individuals, and CWC cemeteries in Germany, for instance, have shown a high degree of individual mobility, especially for women (e.g. Sjögren et al., 2016). While these new analyses have provided an understanding of the general processes occurring in Europe at the time, the model is difficult to verify in Finland and Sweden due to the scarcity of well-preserved human CWC remains (Malmström et al., 2015). To reveal details about the regional and local processes that led to the establishment of the Corded Ware culture in southern Baltoscandia, we must combine the analysis of human remains with new ways of examining the material culture.

No abstract

The wetland find in Levänluhta (western Finland) consists of unburnt, mixed up remains from almost 100 human individuals along with artefacts and animal bones. This spring site, a small lake at the time of use (ad300–800), has been investigated archaeologically from the late nineteenth century onwards. An impressive array of finds, including precious artefacts, is on display at the National Museum of Finland. However, the material has not previously been subjected to systematic research to clarify who these people were, and why they were buried in a small lake at a time when cremation was the prevailing burial tradition. Here we present the results of a multidisciplinary study that includes new analyses and interpretations of the finds and the site. Prestigious artefacts, peripheral location, and the fact that only a few males were found suggest this unusual burial site was a cemetery for socially or ideologically deviant members of the society.

No abstract

Handheld portable energy-dispersive X-ray fluorescence (pXRF) spectrometry is used for non-destructive chemical characterization of archaeological ceramics. Portable XRF can provide adequate analytical sensitivity to discriminate geochemically distinct ceramic pastes, and to identify compositional clusters that correlate with data patterns acquired by NAA or other high sensitivity techniques. However, successful non-destructive analysis of unprepared inhomogeneous ceramic samples requires matrix-defined scientific protocols to control matrix effects which reduce the sensitivity and precision of the instrumentation. Quantification of the measured fluorescence intensities into absolute concentration values and detection of light elements is encumbered by the lack of matrix matched calibration and proper vacuum facilities. Nevertheless, semi-quantitative values for a limited range of high Z elements can be generated. Unstandardized results are difficult to validate by others, and decreased analytical resolution of non-destructive surface analysis may disadvantage site-specific sourcing, jeopardize correct group assignments, and lead to under-interpretation of ceramic craft and production systems.