Bayesian analysis of radiocarbon dates
TLDR
An overview of the main model components used in chronological analysis, their mathematical formulation, and examples of how such analyses can be performed using the latest version of the OxCal software (v4) are given.Abstract:
If radiocarbon measurements are to be used at all for chronological purposes, we have to use statistical methods for calibration. The most widely used method of calibration can be seen as a simple application of Bayesian statistics, which uses both the information from the new measurement and information from the 14C calibration curve. In most dating applications, however, we have larger numbers of 14C measurements and we wish to relate those to events in the past. Bayesian statistics provides a coherent framework in which such analysis can be performed and is becoming a core element in many 14C dating projects. This article gives an overview of the main model components used in chronological analysis, their mathematical formulation, and examples of how such analyses can be performed using the latest version of the OxCal software (v4). Many such models can be put together, in a modular fashion, from simple elements, with defined constraints and groupings. In other cases, the commonly used "uniform phase" models might not be appropriate, and ramped, exponential, or normal distributions of events might be more useful. When considering analyses of these kinds, it is useful to be able run simulations on synthetic data. Methods for performing such tests are discussed here along with other methods of diagnosing possible problems with statistical models of this kind.read more
Citations
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Sediment accumulation rates in subarctic lakes: insights into age-depth modeling from 22 dated lake records from the Northwest Territories, Canada.
Carley Crann,R. Timothy Patterson,Andrew L. Macumber,Jennifer M. Galloway,Helen Roe,Maarten Blaauw,Graeme T. Swindles,Hendrik Falck +7 more
TL;DR: In this article, the average sediment accumulation rates (represented as deposition times, DT, in yr/cm) for lakes in an Arctic setting, and the variability across space (intra-and inter-lake) and time (late Holocene).
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Reconsidering the MSA to LSA transition at Taforalt Cave (Morocco) in the light of new multi-proxy dating evidence
R.N.E. Barton,Abdeljalil Bouzouggar,S.N. Collcutt,Y. Carrión Marco,Laine Clark-Balzan,Laine Clark-Balzan,Nick Debenham,Jacob Morales,Jacob Morales +8 more
TL;DR: In this paper, the authors describe the results of new work at Taforalt and suggest that considerable variation exists across the region, in comparison with sites like the Haua Fteah.
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On the timing of retreat of the Loch Lomond (‘Younger Dryas’) Readvance icefield in the SW Scottish Highlands and its wider significance
J. John Lowe,Ian Matthews,Roseanna Mayfield,Paul Lincoln,Adrian Palmer,Richard A. Staff,Rhys Timms +6 more
TL;DR: In this article, the authors present radiocarbon, tephrostratigraphical and pollen-stratigational evidence from one of the key sites on Rannoch Moor, the results of an experiment designed to test this hypothesis, which is fully compatible with other evidence from the SW Scottish Highlands that suggests that the LLR glaciers in this area continued to expand until towards the end of the Younger Dryas period, and may have persisted in some places after the onset of the Holocene.
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Paleolithic Hunting in a Southern Moravian Landscape: The Case of Milovice IV, Czech Republic
Jiří Svoboda,Jiří Svoboda,Zbigniew M. Bocheńnski,Věra Čulíková,Alena Dohnalová,Šárka Hladilová,Martin Hložek,Ivan Horáček,Martin Ivanov,Miroslav Králík,Martin Novák,Alexander J.E. Pryor,Sandra Sázelová,Rhiannon E. Stevens,Jarosław Wilczyńnski,Piotr Wojtal +15 more
TL;DR: In 2009, a road collapsed into deserted cellars inside the village of Milovice and revealed a complex of archaeological layers deep within loess, at an elevation of only 175 m asl as mentioned in this paper.
Journal ArticleDOI
A multiproxy study of Younger Dryas and Early Holocene climatic conditions from the Grabia River paleo-oxbow lake (central Poland)
Dominik Pawłowski,Mateusz Płóciennik,Stephen J. Brooks,Tomi P. Luoto,Tomi P. Luoto,Krystyna Milecka,Liisa Nevalainen,Odile Peyron,Angela Self,Tomasz Zieliński +9 more
TL;DR: In this article, a multi-proxy reconstruction of water depth, temperature and precipitation inferred from Cladocera, Chironomidae and pollen assemblages has been obtained from Świerczyna paleo-oxbow (central Poland) during the Younger Dryas (YD) and Early Holocene.
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