Why mortar dating? The project the Åland Churches was initiated with the aim to finally reach a reliable chronology for a group of stone churches upon which there had been deep disagreement. Since there are no contemporary sources to shed light on the matter, and since coins and artefacts cannot date buildings, there was an obvious need for objective scientific methods on a larger scale. The method of dendrochronology was widely applied on wooden structures in the churches in Even if dendrochronology could not date the first building stages of the churches, due to repairs and fires, this method was very important in providing firm dates for secondary structures, and for comparative research. Mortar is not an organic material. Yet, absorbing CO2 from the atmosphere during the hardening process, makes mortar an ideal material for 14C dating.
The Radiocarbon Dating Laboratory in Lund performs dating on geological and archaeological samples.
Opening times: Self-guided tour. Well signposted. Information: Fagersta tourism. The two pit furnaces at Dunshammar, two kilometres south of Ängelsberg, constitute the oldest link in the 1, years during which iron has been produced in the region. The furnaces have been well preserved and the site is one of only a few where Iron-Age pit furnaces can be seen in their natural setting.
2019 © collar-dog.com. All Rigths Reserved. All models were 0ver 18 y.o.