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14C Mortar Dating: The Case of the Medieval Shayzar Citadel, Syria

Published online by Cambridge University Press:  09 February 2016

Sara Nonni*
Affiliation:
University of Rome La Sapienza, Department of Earth Sciences, 000185 Rome, Italy Centre for Isotopic Research on Cultural and Environmental Heritage, INNOVA, 81020 San Nicola La Strada, Caserta, Italy
Fabio Marzaioli
Affiliation:
Centre for Isotopic Research on Cultural and Environmental Heritage, INNOVA, 81020 San Nicola La Strada, Caserta, Italy Second University of Naples, Department of Mathematics and Physics, 81100 Caserta, Italy
Michele Secco
Affiliation:
University of Padua, Department of Geosciences, 35131 Padua, Italy
Isabella Passariello
Affiliation:
Centre for Isotopic Research on Cultural and Environmental Heritage, INNOVA, 81020 San Nicola La Strada, Caserta, Italy
Manuela Capano
Affiliation:
Centre for Isotopic Research on Cultural and Environmental Heritage, INNOVA, 81020 San Nicola La Strada, Caserta, Italy Second University of Naples, Department of Letters and Cultural Heritage, 81055 Santa Maria Capua Vetere, Caserta, Italy
Carmine Lubritto
Affiliation:
Centre for Isotopic Research on Cultural and Environmental Heritage, INNOVA, 81020 San Nicola La Strada, Caserta, Italy Second University of Naples, Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, 81100 Caserta, Italy
Silvano Mignardi
Affiliation:
University of Rome La Sapienza, Department of Earth Sciences, 000185 Rome, Italy
Cristina Tonghini
Affiliation:
University of Venice Ca'Foscari, Department of Studies on Asia and Mediterranean Africa, 30125 Venice, Italy
Filippo Terrasi
Affiliation:
University of Rome La Sapienza, Department of Earth Sciences, 000185 Rome, Italy Centre for Isotopic Research on Cultural and Environmental Heritage, INNOVA, 81020 San Nicola La Strada, Caserta, Italy
*
3Corresponding author. Email: sara.nonni@uniroma1.it.

Abstract

This paper reports the results from applying the Cryo2SoniC (Cryobreaking, Sonication, Centrifugation) protocol to some lime mortars sampled from the citadel of Shayzar (Syria). The overall aims of this project are 1) to use the properties offered by high-precision accelerator mass spectrometry (AMS) radiocarbon dating for the evaluation of absolute chronology with its typical robust time constraints (i.e. 25 14C yr), and 2) to apply the dating directly to the citadel structures in order to prevent possible biasing effects potentially affecting indirect 14C dating on organic materials found at the study site. The analyses presented in this paper have been mainly performed as a preliminary check of the Cryo2SoniC methodology in order to assess its applicability to this study site by comparing observed mortar results with archaeological expectations about the citadel development phasing and charcoals found encased in mortars. Petrographic and mineralogical thin-section analyses by optical microscopy (TSOM), X-ray powder diffraction (XRD), and scanning electron microscopy plus energy dispersive spectroscopy (SEM/EDS) investigations were carried out for characterization of the mortar samples to verify the occurrence of some features, related to their production technology, which may introduce dating offsets. The resulting 14C calibrated ages were in agreement with the archaeological expectations based on type and stratigraphic site reconstructions, in situ inscriptions, and written sources. Such results showed also a general (with 1 exception) statistical agreement among the charcoals and the analyzed mortars simultaneously, confirming the archaeological expectations for the Shayzar citadel. Results presented in this paper indicate good accuracy for the applied procedure for chronology reconstruction and highlight the capability of Cryo2SoniC to further characterize the Shayzar site.

Type
Articles
Copyright
Copyright © 2013 by the Arizona Board of Regents on behalf of the University of Arizona 

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References

Al-Bashaireh, K, Hodgins, GWL. 2011. AMS 14C dating of organic inclusions of plaster and mortar from different structures at Petra-Jordan. Journal of Archaeological Science 38(3):485–91.Google Scholar
Ambers, J. 1987. Stable carbon isotope ratios and their relevance to the determination of accurate radiocarbon dates for lime mortars. Journal of Archaeological Science 14(6):569–76.Google Scholar
Baxter, MS, Walton, A. 1970. Radiocarbon dating of mortars. Nature 225(5236):937–8.Google Scholar
Berger, R. 1992. 14C dating mortar in Ireland. Radiocarbon 34(3):880–9.Google Scholar
Bowman, S. 1990. Radiocarbon Dating. Berkeley: University of California Press: 51.Google Scholar
Cherf, J. 1984. Lime mortar C14 dating and the Late Roman fortification of Thermopylai. Journal of Archaeology 88(4):594–8.Google Scholar
Delibrias, G, Labeyrie, J. 1964. Dating of old mortars by the carbon-14 method. Nature 201(4920):742.Google Scholar
Folk, RL, Valastro, S Jr. 1976. Successful technique for dating of lime mortar by carbon-14. Journal of Field Archaeology 3(2):203–8.Google Scholar
Goslar, T, Nawrocka, D, Czernik, J. 2009. Foraminiferous limestone in 14C dating of mortar. Radiocarbon 51(3):987–93.Google Scholar
Hale, J, Heinemeier, J, Lancaster, L, Lindroos, A, Ringbom, Å. 2003. Dating ancient mortar. American Scientist 91(2):130–7.Google Scholar
Heinemeier, J, Jungner, H, Lindroos, A, Ringbom, Å, Von Konow, T, Rud, N. 1997. AMS 14C dating of lime mortar. Nuclear Instruments and Methods in Physics Research B 123(1–4):487–95.Google Scholar
Heinemeier, J, Ringbom, Å, Lindroos, A, Sveinbjörnsdóttir, ÁE. 2010. Successful AMS 14C dating of non-hydraulic lime mortars from the Medieval churches of the Åland Islands, Finland. Radiocarbon 52(1):171–204.Google Scholar
Lindroos, A, Heinemeier, J, Ringbom, Å, Braskén, M, Sveinbjörnsdóttir, Á. 2007. Mortar dating using AMS 14C and sequential dissolution: examples from Medieval, non-hydraulic lime mortars from the Åland Islands, SW Finland. Radiocarbon 49(1):4767.Google Scholar
Lindroos, A, Regev, L, Oinonen, M, Ringbom, A, Heinemeier, J. 2012. 14C dating of fire-damaged mortars from Medieval Finland. Radiocarbon 54(3–4):117.Google Scholar
Marzaioli, F, Borriello, G, Passariello, I, Lubritto, C, De Cesare, N, D'Onofrio, A, Terrasi, F. 2008. Zinc reduction as an alternative method for AMS radiocarbon dating: process optimization at CIRCE. Radiocarbon 50(1):139–49.Google Scholar
Marzaioli, F, Lubritto, C, Nonni, S, Passariello, I, Capano, M, Terrasi, F. 2011. Mortar radiocarbon dating: preliminary accuracy evaluation of a novel methodology. Analytical Chemistry 83(6):2038–45.Google Scholar
Marzaioli, F, Nonni, S, Passariello, I, Capano, M, Ricci, P, Lubritto, C, De Cesare, N, Eramo, G, Castillo, JAQ, Terrasi, F. 2013. Accelerator mass spectrometry 14C dating of lime mortars: methodological aspects and field study applications at CIRCE (Italy). Nuclear Instruments and Methods in Physics Research B 294:246–51.Google Scholar
Mathews, JP. 2001. Radiocarbon dating of architectural mortar: a case study in the Maya region, Quintana Roo, Mexico. Journal of Field Archaeology 28(3–4):395–400.Google Scholar
McCrea, JMJ. 1950. Isotopic chemistry of carbonates and a paleo-temperature scale. Journal of Chemical Physics 18:849–57.Google Scholar
Nawrocka, D, Czernik, J, Goslar, T. 2009. 14C dating of carbonate mortars from Polish and Israeli sites. Radiocarbon 51(2):857–66.Google Scholar
Nawrocka, DM, Michczyńska, DJ, Pazdur, A, Czernik, J. 2007. Radiocarbon chronology of the ancient settlement in the Golan Heights area, Israel. Radiocarbon 49(2):625–37.Google Scholar
Nawrocka, DM, Michniewicz, J, Pawlyta, J, Pazdur, A. 2005. Application of radiocarbon method for dating of lime mortars. Geochronometria 24:109–15.Google Scholar
Ortega, LA, Zuluaga, MC, Alonso-Olazaba, A, Murelaga, X, Insausti, M, Ibañez-Etxeberria, A. 2012. Historic lime-mortar 14C dating of Santa Maria la Real (Zarautz, northern Spain): extraction of suitable grain size for reliable 14C dating. Radiocarbon 54(1):2336.Google Scholar
Passariello, I, Marzaioli, F, Lubritto, C, Rubino, M, D'Onofrio, A, De Cesare, N, Borriello, G, Casa, G, Palmieri, A, Rogalla, D, Sabbarese, C, Terrasi, F. 2007. Radiocarbon sample preparation at the CIRCE AMS Laboratory in Caserta, Italy. Radiocarbon 49(2):225–32.Google Scholar
Rech, JA. 2004. New uses for old laboratory techniques. Near Eastern Archaeology 67(4):212–9.Google Scholar
Reimer, PJ, Baillie, MGL, Bard, E, Bayliss, A, Beck, JW, Blackwell, PG, Bronk Ramsey, C, Buck, CE, Burr, GS, Edwards, RL, Friedrich, M, Grootes, PM, Guilderson, TP, Hajdas, I, Heaton, T, Hogg, AG, Hughen, KA, Kaiser, KF, Kromer, B, McCormac, FG, Manning, SW, Reimer, RW, Richards, DA, Southon, JR, Talamo, S, Turney, CSM, van der Plicht, J, Weyhenmeyer, CE. 2009. IntCal09 and Marine09 radiocarbon age calibration curves, 0–50,000 years cal BP. Radiocarbon 51(4):1111–50.Google Scholar
Rozanski, K, Stichler, W, Gonfiantini, R, Scott, EM, Beukens, RP, Kromer, B, Van der Plicht, J. 1992. The IAEA 14C intercomparison exercise 1990. Radiocarbon 34(3):506–19.Google Scholar
Sonninen, E, Jungner, H. 2001. An improvement in preparation of mortar for radiocarbon dating. Radiocarbon 43(2A):271–3.Google Scholar
Stuiver, M, Polach, HA. 1977. Discussion: reporting of 14C data. Radiocarbon 19(3):355–63.Google Scholar
Stuiver, M, Reimer, PJ. 1993. Extended 14C data base and revised CALIB 3.0 14C age calibration program. Radiocarbon 35(1):215–30.Google Scholar
Stuiver, M, Smith, CS. 1965. Radiocarbon dating of ancient mortar and plaster. In: 6th International Conference on Radiocarbon and Tritium Dating. Pullman, Washington, USA. p 338–43.Google Scholar
Terrasi, F, De Cesare, N, D'Onofrio, A, Lubritto, C, Marzaioli, F, Passariello, I, Rogalla, D, Sabbarese, C, Borriello, G, Casa, G, Palmieri, A. 2008. High precision 14C AMS at CIRCE. Nuclear Instruments and Methods in Physics Research B 266(10):2221–4.Google Scholar
Tonghini, C. 2012. Shayzar I: the fortification of the citadel. In: DeVries, K, France, J, Neiberg, MS, Schneid, F, editors. History of Warfare 71. Leiden: Brill.Google Scholar
Tonghini, C, Montevecchi, N. 2006. Muslim military architecture in greater Syria from the coming of Islam to the Ottoman Empire. In: Kennedy, H, editor. History of Warfare 35. Leiden: Brill. p 201–24.Google Scholar
Tonghini, C, Donato, E, Montevecchi, N, Nucciotti, M. 2003. The evolution of masonry technique in Islamic military architecture: the evidence from Shayzar. Levant 35:179–212.Google Scholar
Tonghini, C, Montevecchi, N, Finocchietti, L, Tavernari, C, Vezzoli, V. 2005. Il castello musulmano di Shayzar, Siria: nuovi dati dalla campagna 2004 di indagini archeologiche e analisi degli alzati. Archeologia Medioevale 32:209–234.Google Scholar
Tubbs, LE, Kinder, TN. 1990. The use of AMS for the dating of lime mortars. Nuclear Instruments and Methods in Physics Research B 52(3–4):438–41.Google Scholar
Van Strydonck, M, Dupas, M, Dauchotdehon, M, Pachiaudi, C, Marechal, J. 1986. The influence of contaminating (fossil) carbonate and the variations of δ13C in mortar dating. Radiocarbon 28(2A):702–10.Google Scholar
Van Strydonck, M, Van der Borg, K, De Jong, A, Keppens, E. 1992. Radiocarbon dating of lime fractions and material from buildings. Radiocarbon 34(3):873–9.Google Scholar
Wyrwa, A, Goslar, T, Czernik, J. 2009. AMS 14C dating of Romanesque rotunda and stone buildings of a Medieval monastery in Łekno, Poland. Radiocarbon 51(2):471–80.Google Scholar