RESEARCH REPORT: MAGNETIC INVESTIGATIONS AND THE AGE OF A MEDIEVAL KILN AT KUNGAHÄLLA (SOUTH-WEST SWEDEN)
Palaeomagnetic investigations of the remanent magnetization of 12 bricks from the kiln floor gave precise definitions of both the direction of the archaeomagnetic field [(Dm, Im) = (66.7°, 8.8°), k = 655, α95= 1.7°] and the palaeointensity [Bm= 69.0 ± 3.6 µT]. An archaeomagnetic date is obtained by comparing the direction of the archaeomagnetic field found in the kiln with a geocentral dipole-transformation of the British master-curve for secular variation. Of two possible archaeomagnetic dates (ad1280 ± 50 orad1480 ± 50), thead1280 ± 50 age is in good accordance with the C-14 ages and archaeological dates as well as with direct historical evidence, whereas a c. 100 years younger TL date appears to be too young.
Document Type: Research Article
Affiliations: 1: Department of Earth Sciences, Aarhus University, Finlandsgade 8, DK-8200 Århus N, Denmark. 2: Directorate for Cultural Heritage, District Office North, Kjøpmannsgata 25, N-7013 Trondheim, Norway
Publication date: November 1, 2003