Assessment of the reason for the vitrification of a wall at a hillfort. The example of Broborg in Sweden

Sjöblom, RolfLuleå tekniska universitet,Geovetenskap och miljöteknik (författare)

Validerad;2022;Nivå 2;2022-05-12 (johcin);Funder:United States Department of Energy (US DOE) Office of Environmental Management, International Programs; the US DOE Waste Treatment and Immobilization Plant Project.
It was discovered around 250 years ago that some of the rock material in the walls of some hillforts had been subjected to such high temperature that it had vitrified. This prompted a debate as to the reason for it that is still going on today: did the vitrification come about as a result of hostile action, by accident, or for the purpose of constructing the fort? The present paper is based on the recognition that hillforts are different, and therefore should be evaluated individually. All identifiable factors of interest should be included, and especially those that might disprove any alternative. Thus, incentives, competence and petrographic aspects were evaluated for the hillfort named Broborg (dated to the Migration Period, in Sweden A.D. 400–550), and it is concluded that the vitrification here came about for the purpose of constructing the fort.

Hjärthner-Holdar, EvaArkeologerna, Geoarchaeological Laboratory, National Historical Museums (SHMM), Hållnäsgatan 11, SE 752 28 Uppsala, Sweden(Swepub:ltu)evahja (författare)
Pearce, Carolyn I.Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99352, USA (författare)
Weaver, Jamie L.National Institute of Standards and Technology, Gaithersburg, MD 20899, USA (författare)
Ogenhall, ErikArkeologerna, Geoarchaeological Laboratory, National Historical Museums (SHMM), Hållnäsgatan 11, SE 752 28 Uppsala, Sweden; Geoveta AB, Sjöängsvägen 2, 192 72 Sollentuna, Sweden (författare)
McCloy, John S.Washington State University, PO Box 642920, Pullman, WA 99164, USA (författare)
Marcial, JoséPacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99352, USA (författare)
Vicenzi, Edward P.Smithsonian Institution, Museum Conservation Institute, 4610 Silver Hill Road, Suitland, MD 20746, USA (författare)
Schweiger, Michael J.Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99352, USA (författare)
Kruger, Albert A.US Department of Energy, Office of River Protection, Richland, WA 99352, USA (författare)
Luleå tekniska universitetGeovetenskap och miljöteknik (creator_code:org_t)

Av författaren/redakt...: Sjöblom, Rolf; Hjärthner-Holdar ...; Pearce, Carolyn ...; Weaver, Jamie L.; Ogenhall, Erik; McCloy, John S.; visa fler...; Marcial, José; Vicenzi, Edward ...; Schweiger, Micha ...; Kruger, Albert A ...; visa färre...

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