Preparation and Dating of Mortar Samples—Mortar Dating Inter-Comparison Study (MODIS). Issue 6 (10th November 2017)

• Record Type: Journal Article
• Authors: Hajdas, Irka; Lindroos, Alf; Heinemeier, Jan; Ringbom, Åsa; Marzaioli, Fabio; Terrasi, Filippo; Passariello, Isabella; Capano, Manuela; Artioli, Gilberto; Addis, Anna; Secco, Michele; Michalska, Danuta; Czernik, Justyna; Goslar, Tomasz; Hayen, Roald; Van Strydonck, Mark; Fontaine, Laurent; Boudin, Mathieu; Maspero, Francesco; Panzeri, Laura; Galli, Anna; Urbanová, Petra; Guibert, Pierre
• Editors: Cook, Gordon; Hamilton, Derek
• Is Part Of: Radiocarbon. Volume 59:Issue 6(2017)
• Page Start: 1845
• Page End: 1858
• Publication Date: 2017-11-10
• Subjects: 14C, -- intercomparison, -- MODIS, -- mortar, -- OSL; Radiocarbon dating -- Periodicals; 930.1028505
• DOI: 10.1017/RDC.2017.112
• Languages: English
• ISSNs: 0033-8222

Abstract

Abstract: Seven radiocarbon laboratories: Åbo/Aarhus, CIRCE, CIRCe, ETHZ, Poznań, RICH, and Milano-Bicocca performed separation of carbonaceous fractions suitable for 14 C dating of four mortar samples selected for the MOrtar Dating Inter-comparison Study (MODIS). In addition, optically stimulated luminescence (OSL) analyses were completed by Milano-Bicocca and IRAMAT-CRP2A Bordeaux. Each laboratory performed separation according to laboratory protocol. Results of this first intercomparison show that even though consistent 14 C ages were obtained by different laboratories, two mortars yielded ages different than expected from the archaeological context.