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A Bayesian Approach to the Use of 14C Dates in the Estimation of the Age of Peat

Published online by Cambridge University Press:  18 July 2016

J. A. Christen
Affiliation:
Institute de Matemáticas, Unidad Morelia, UNAM Nicolás Romero 150, Centro 58000 Morelia, Michoacán, Mexico
R. S. Clymo
Affiliation:
School of Biological Sciences, Queen Mary and Westfield College, London, E1 4NS, England
C. D. Litton
Affiliation:
Department of Mathematics, University of Nottingham, University Park, Nottingham, NG7 2RD, England
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Abstract

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Peatlands occupy a significant portion of the land surface of the Earth and form a large carbon store. Most peat-forming systems have two layers. The upper layer, the acrotelm, fixes carbon by photosynthesis, loses some of it by decay and passes the remainder on to the lower layer, the catotelm. In the catotelm, decay continues at a slower rate. Mathematical models of the growth of the catotelm have been proposed which relate the cumulative mass of peat above a particular depth to calendar age of the peat at that depth. We demonstrate how 14C dating and the Bayesian approach to data analysis can be used to make inferences about the relation between calendar age and cumulative mass, and to estimate the accumulation and decay rates.

Type
III. Calibration of the 14C Time Scale
Copyright
Copyright © the Department of Geosciences, The University of Arizona 

References

Buck, C. E., Cavanagh, W. G. and Litton, C. D. 1996 The Bayesian Approach to Interpreting Archaeological Data. Chichester, John Wiley & Sons, Inc., in press.Google Scholar
Christen, J. A. (ms.) 1994 Bayesian Interpretation of Radiocarbon Results. Ph.D. dissertation, Department of Mathematics, University of Nottingham: 276 p.Google Scholar
Clymo, R. S. 1984 The limits to peat bog growth. Philosophical Transactions of the Royal Society of London B 303: 605654.Google Scholar
Clymo, R. S. 1991 Peat growth. In Shane, L. C. K. and Cushing, E. J., eds., Quaternary Landscapes. Minneapolis, University of Minnesota Press: 76112.Google Scholar
Clymo, R. S. 1992 Models of peat growth. Suo 43: 127136.Google Scholar
Clymo, R. S., Oldfield, F., Appleby, P. G., Pearson, G. W., Ratnesar, P. and Richardson, N. 1990 The record of atmospheric deposition on a rainwater-dependent peatland. Philosophical Transactions of the Royal Society of London B 327: 331338.Google Scholar
Ingram, H. A. P. 1978 Soil layers in mires: Function and terminology. Journal of Soil Science 29: 224227.CrossRefGoogle Scholar
Litton, C. D. and Buck, C. E. 1994 The Bayesian approach to the interpretation of archaeological data. Archaeometry 37(1): 124.CrossRefGoogle Scholar
Nelder, J. A. and Mead, R. 1965 A simplex method for function minimization. Computer Journal 7: 308313.CrossRefGoogle Scholar
Pearson, G. W. 1986 Precise calendrical dating of known growth-period samples using a ‘curve fitting’ technique. In Stuiver, M. and Kra, R. S., eds., Proceedings of the 12th International 14C Conference. Radiocarbon 28(2A): 292299.CrossRefGoogle Scholar
Pearson, G. W. and Stuiver, M. 1986 High-precision calibration of the 14C time scale, 500–2500 bc. In Stuiver, M. and Kra, R. S., eds., Proceedings of the 12th International 14C Conference. Radiocarbon 28(2B): 839862.CrossRefGoogle Scholar
Stuiver, M. and Pearson, G. W. 1986 High-precision calibration of the 14C time scale, ad 1950–500 bc. In Stuiver, M. and Kra, R. S., eds., Proceedings of the 12th International 14C Conference. Radiocarbon 28 (2B): 805838.CrossRefGoogle Scholar
Warner, B. G., Tolonen, K. and Tolonen, M. 1991 A postglacial history of vegetation and bog formation at Point Escuminac, New Brunswick. Canadian Journal of Earth Sciences 28: 15721582.CrossRefGoogle Scholar
Warner, B. G., Clymo, R. S. and Tolonen, K. 1993 Implications of peat accumulation at Point Escuminac, New Brunswick. Quaternary Research 39: 245248.CrossRefGoogle Scholar