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- Title
Valmarinniemen uudet radiohiiliajoitukset ja bayesilaiset ajoitusmallit.
- Authors
Ikäheimo, Janne
- Abstract
The article introduces thirteen new radiometric radiocarbon dates (Table 1, Figure 1) from the Valmarinniemi cemetery of the Medieval Kemi parish in northwest Lapland. While the main body of radiocarbon dates pertains to the 13th and 14th centuries, thus corroborating the previous archaeological and historical evidence, the information potential of this new data is further enhanced through Bayesian modeling. The main body of the article describes and discusses various types of a priori chronological data regarding the site and its incorporation into the model. This information includes the estimation of the post-glacial land-uplift rate in the Valmarinniemi area, the circulation time of silver coins found at the site, the inherent age of timber used for the construction, the six (AMS) radiocarbon dates from cremation burials discovered at the cemetery and the various terminus post quem dates given in historical sources. The preliminary exploration of the data was carried out by combining all the relevant radiocarbon dates together (Figure 3) and by performing a similar analysis on modeled coin dates from the site (Figure 4) Based on these preliminary results, the data was then modeled into a sequence (Appendix 1) consisting of three mutually exclusive chronological phases either limited by absolute dates given in historical sources or alternatively left open to be determined by Oxcal 4.2 -software used in modeling. The results of simulations carried out with various versions of the model (Table 2) confirm the synchronous use of cremation and inhumation burials at Valmarinniemi during the early 14th century, when the first church was most likely built at the site. This church that was most likely burnt down in the last decade of the same century or during the early 15th century might also be the only church ever built at Valmarinniemi, as the critical revaluation of the modeled radiocarbon dates (Table 3) as well as other data does not necessarily support the previously cherished view about the existence of two churches at the site.
- Publication
Faravid, 2017, Vol 43, p107
- ISSN
0356-5629
- Publication type
Article