Journal
JOURNAL OF ARCHAEOLOGICAL SCIENCE
Volume 53, Issue -, Pages 133-147Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jas.2014.10.013
Keywords
Archaeological demography; Paleontology; Temporal frequency analysis; Radiocarbon age estimation; Monte Carlo simulation
Funding
- Directorate For Geosciences
- Office of Polar Programs (OPP) [1417609] Funding Source: National Science Foundation
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Archaeologists are increasingly concerned that the non-linear relationship between the calendric and radiocarbon timelines may introduce anomalous structures into radiocarbon-supported temporal frequency distributions (tfds) - time series data describing temporal fluctuations in the frequency of archaeological, paleontological, or other geological deposits. This concern emphasizes a need for improved middle range theory on Yd formation, addressing the interaction between several stochastic processes. This paper outlines a Monte Carlo simulation designed to explore the influence of several variables on tfd morphology, including the nonlinear calendric-to-radiocarbon age relationship. The results indicate that this non-linear relationship entails greater variance between identically generated tfds over some temporal intervals than others but does not predictably lead to tfd peaks over these intervals as previously suggested. Additional variance between identically generated tfds results from small sample sizes and high values in the underlying TFD. Smoothing the tfd is a solution not only to calibration curve interference but also to sample size-dependent sampling error. (C) 2014 Elsevier Ltd. All rights reserved.
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