Convergence de la typologie de céramiques et de trois méthodes chronométriques pour la datation d'un four de potier à Lezoux (Puy-de-Dôme)

Mennessier-Jouannet, Christine; Bucur, Iliana; Evin, Jacques; Lanos, Philippe; Miallier, Didier

doi:10.3406/arsci.1995.926

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…The aim is to date the last firing of a medieval potter's kiln recovered at the Maison-de-Retraite-Publique site (Mennessier-Jouannet et al, 1995), in Lezoux (Auvergne, France). The target event corresponds to the last firing of the kiln that corresponds to the last use of the kiln (i.e.…”

Section: Applicationsmentioning

confidence: 99%

Event date model: a robust Bayesian tool for chronology building

Lanos

Philippe

2018

CSAM

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We propose a robust event date model to estimate the date of a target event by a combination of individual dates obtained from archaeological artifacts assumed to be contemporaneous. These dates are affected by errors of different types: laboratory and calibration curve errors, irreducible errors related to contaminations, and taphonomic disturbances, hence the possible presence of outliers. Modeling based on a hierarchical Bayesian statistical approach provides a simple way to automatically penalize outlying data without having to remove them from the dataset. Prior information on individual irreducible errors is introduced using a uniform shrinkage density with minimal assumptions about Bayesian parameters. We show that the event date model is more robust than models implemented in BCal or OxCal, although it generally yields less precise credibility intervals. The model is extended in the case of stratigraphic sequences that involve several events with temporal order constraints (relative dating), or with duration, hiatus constraints. Calculations are based on Markov chain Monte Carlo (MCMC) numerical techniques and can be performed using ChronoModel software which is freeware, open source and cross-platform. Features of the software are presented in Vibet et al. (ChronoModel v1.5 user's manual, 2016). We finally compare our prior on event dates implemented in the ChronoModel with the prior in BCal and OxCal which involves supplementary parameters defined as boundaries to phases or sequences.

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Section: Applicationsmentioning

confidence: 99%

Event date model: a robust Bayesian tool for chronology building

Lanos

Philippe

2018

CSAM

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Archaeomagnetism, Methodology and Applications: Implentation and Practice of the Archeomagneiic Method in France and Bulgaria

Lanos

Kovacheva

Chauvin³

1999

European Journal of Archaeology

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Archaeomagnetism, Methodology and Applications: Implementation and Practice of the Archaeomagnetic Method in France and Bulgaria

1999

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Recent improvements in archaeomagnetism applied to archaeological baked clay, in France and Bulgaria, are presented in this paper. After reviewing the historical development of the method in France and Bulgaria, and the principles of the method, we present sampling techniques for in situ structures (kilns and hearths) and sets of displaced materials (bricks or tiles). In the analysis protocol, we stress the importance of correcting the magnetic anisotropic effects especially for bricks. We also show how the problem of brittle specimens can be solved by induration. After a review of the published archaeomagnetic data currently available for France and Bulgaria, we present different smoothing techniques applied to data obtained in these countries. Finally, we present the usage of the variation curves of the geomagnetic elements in the past to calculate the archaeomagnetic dates. One of these techniques is based on a Bayesian approach, similar to the case of the dendro-chronological calibration of radiocarbon ages. The main goal of the paper is to highlight for the archaeologists the possibilities of archaeomagnetism for dating purposes and for other problems in archaeology, on the basis of the experience of the laboratories in France and Bulgaria. The developments of selected archaeomagnetic studies in other European countries are quoted and referenced.

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Convergence de la typologie de céramiques et de trois méthodes chronométriques pour la datation d'un four de potier à Lezoux (Puy-de-Dôme)

Cited by 4 publications

References 6 publications

Event date model: a robust Bayesian tool for chronology building

Event date model: a robust Bayesian tool for chronology building

Archaeomagnetism, Methodology and Applications: Implentation and Practice of the Archeomagneiic Method in France and Bulgaria

Archaeomagnetism, Methodology and Applications: Implementation and Practice of the Archaeomagnetic Method in France and Bulgaria

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