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Radiocarbon Dating of Historical Parchments

  • Fiona Brock (a1)


A range of pretreatment methods was applied to 6 known-age historical parchments to investigate the most suitable methods for effectively removing contamination and ensuring accurate radiocarbon dates while minimizing unnecessary destruction of potentially valuable historical documents. The methods tested included an acid wash, different concentrations of acid-base-acid (ABA) pretreatments, the current routine ABA method applied at the Oxford Radiocarbon Accelerator Unit (ORAU) that includes an additional bleach treatment, and extraction of collagen. The C:N atomic weight ratio of the untreated and pretreated parchment fractions was observed to be a useful indicator of the presence or successful removal of contaminants. The pretreatment methods that produced the most accurate 14C dates and acceptable C:N ratios were found to be ABA protocols (without bleach) and collagen extraction; solvent washes and acid pretreatments alone were not sufficient to remove all contaminants and produce reliable 14C dates. The inclusion of a base wash did not affect the 14C dates of the samples, but did favorably influence the C:N ratio of the final product.



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Ambrose, SH. 1990. Preparation and characterization of bone and tooth collagen for isotopic analysis. Journal of Archaeological Science 17(4):431–51.
Badea, E, Miu, E, Budrugeac, P, Giurginca, M, Masic, A, Badea, N, Delia Gatta, G. 2008. Study of deterioration of historical parchments by various thermal analysis techniques complemented by SEM, FTIR, UV-VIS-NIR and unilateral NMR investigations. Journal of Thermal Analysis and Calorimetry 91(1):1727.
Berger, R, Evans, N, Abell, JM, Resnik, MA. 1972. Radiocarbon dating of parchment. Nature 235(5334):160–1.
Bonani, G, Ivy, S, Wölfli, W, Broshi, M, Carmi, I, Strugnell, J. 1992. Radiocarbon dating of fourteen Dead Sea Scrolls. Radiocarbon 34(3):843–9.
Brock, F, Higham, T, Ditchfield, P, Bronk Ramsey, C. 2010. Current pretreatment methods for AMS radiocarbon dating at the Oxford Radiocarbon Accelerator Unit (ORAU). Radiocarbon 52(1):103–12.
Bronk Ramsey, C. 2009. Bayesian analysis of radiocarbon dates. Radiocarbon 51(1):337–60.
Carmi, I. 2002. Are the 14C dates of the Dead Sea Scrolls affected by castor oil contamination? Radiocarbon 44(1):213–6.
Donahue, DJ, Olin, JS, Harbottle, G. 2002. Determination of the radiocarbon age of parchment of the Vinland Map. Radiocarbon 44(1):4552.
Edwards, HGM, Farwell, DW, Newton, EM, Rull Perez, F, Jorge Villar, S. 2001. Application of FT-Raman spectroscopy to the characterisation of parchment and vellum, I; novel information for palaeographic and historiated manuscript studies. Spectrochimica Acta Part A 57(6):1223–34.
Ghioni, C, Hiller, JC, Kennedy, CJ, Aliev, AE, Odlyha, M, Boulton, M, Wess, TJ. 2005. Evidence of a distinct lipid fraction in historical parchments: a potential role in degradation. Journal of Lipid Research 46(12):2726–34.
Hedges, REM, Law, IA, Bronk, CR, Housley, RA. 1989. The Oxford accelerator mass spectrometry facility: technical developments in routine dating. Archaeometry 31(2):99113.
Jull, AJT, Donahue, DJ, Broshi, M, Tov, E. 1995. Radiocarbon dating of scrolls and linen fragments from the Judean Desert. Radiocarbon 37(1):11–9.
Kennedy, CJ, Wess, TJ. 2003. The structure of collagen within parchment – a review. Restaurator 24(2):6180.
Kennedy, CJ, Hiller, JC, Lammie, D, Drakopoulos, M, Vest, M, Cooper, M, Adderley, WP, Wess, TJ. 2004a. Microfocus X-ray diffraction of historical parchment reveals variations in structural features through parchment cross sections. Nano Letters 4(8):1373–80.
Kennedy, CJ, Vest, M, Cooper, M, Wess, TJ. 2004b. Laser cleaning of parchment: structural, thermal and biochemical studies into the effect of wavelength and fluence. Applied Surface Science 227(1–4):151–63.
Rasmussen, KL, van der Plicht, J, Cryer, FH, Doudna, G, Cross, FM, Strugnell, J. 2001. The effects of possible contamination on the radiocarbon dating of the Dead Sea Scrolls I: castor oil. Radiocarbon 43(1):127–32.
Rasmussen, KL, van der Plicht, J, Doudna, G, Cross, FM, Strugnell, J. 2003. Reply to Israel Carmi: “Are the 14C dates of the Dead Sea Scrolls affected by castor oil contamination?” Radiocarbon 45(3):497–9.
Rasmussen, KL, van der Plicht, J, Doudna, G, Nielsen, F, Højrup, P, Stenby, EH, Pederson, CT. 2009. The effects of possible contamination on the radiocarbon dating of the Dead Sea Scrolls II: empirical methods to remove castor oil and suggestions for redating. Radiocarbon 51(3):1005–22.
Reed, R. 1972. Ancient Skins, Parchments and Leather. New York: Seminar Press.
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.
Santos, FJ, Gómez-Martínez, I, García-León, M. 2010. Radiocarbon dating of medieval manuscripts from the University of Seville. Nuclear Instruments and Methods in Physics Research B 268(7–8):1038–40.
Strlič, M, Cigić, IK, Rabin, I, Kolar, J, Pihlar, B, Cassar, M. 2009. Autoxidation of lipids in parchment. Polymer Degradation and Stability 94(6):886–90.
Thompson, DV. 1956. The Materials and Techniques of Medieval Painting. New York: Dover Publications.
van Klinken, GJ. 1999. Bone collagen quality indicators for palaeodietary and radiocarbon measurements. Journal of Archaeological Science 26(6):687–95.
Weiner, S, Kustanovich, Z, Gil-Av, E, Traub, W. 1980. Dead Sea Scroll parchments: unfolding of the collagen molecules and racemization of aspartic acid. Nature 287(5785):820–3.

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Radiocarbon Dating of Historical Parchments

  • Fiona Brock (a1)


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