Pierre Guibert

Pierre Guibert
French National Centre for Scientific Research | CNRS · Institut des Sciences humaines et sociales (INSHS)

Dr HDR

About

199
Publications
35,346
Reads
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Citations
Introduction
Since 2012, I have been conducting a collaborative and interdisciplinary research project on lime - mortar dating by single grain OSL using the quartz grains of the aggregate. First results of an exploratory stage of this research were published (see Petra Urbanova, PhD defence 27th nov. 2015 at UBM). A new 3 year programme is actually in progress with the study of historical buildings of the Aquitaine region that present sequences of construction from the roman period to the end of middle ages.
Additional affiliations
January 2006 - present
Université Bordeaux Montaigne
Position
  • Head of Department
October 1986 - present
French National Centre for Scientific Research
Position
  • Engineer
Education
September 1981 - July 1983
Université Bordeaux Montaigne
Field of study
  • Archaeometry, archaeological sciences
September 1979 - June 1980
Université Bordeaux 1
Field of study
  • Archaeometry, archaeological sciences
September 1977 - June 1978
Université Bordeaux 1
Field of study
  • Physics and chemistry

Publications

Publications (199)
Preprint
In order to successfully understand the complex evolution of prehistoric societies, archaeologists require absolute dating tools, which are not only accurate but also widely applicable. Thermoluminescence (TL) dating is one such approach that has been successfully used to establish a general chronological framework for prehistoric sites and is part...
Article
Full-text available
Statistical analysis has become increasingly important in optically stimulated luminescence (OSL) dating since it has become possible to measure signals at the single-grain scale. The accuracy of large chronological datasets can benefit from the inclusion, in chronological modelling, of stratigraphic constraints and shared systematic errors. Recent...
Preprint
Full-text available
Statistical analysis has become increasingly important in the field of OSL dating since it has become possible to measure signals at the single grain scale. The accuracy of large chronological datasets can benefit from the inclusion, in chronological modelling, of stratigraphic constraints and shared systematic errors. Recently, a number of Bayesia...
Article
Preface from the Guest Editors - Volume 62 Issue 3 - Michael Toffolo, Elisabetta Boaretto, Rémy Chapoulie, Pierre Guibert
Article
Dating lime mortar shows great potential for establishing the chronology of a construction. The basic premise of mortar dating by optically stimulated luminescence (OSL) is that quartz in the sand used for making mortar has been optically zeroed during the preparation process (optical bleaching). The moment to be dated is the last exposure of sand...
Chapter
Full-text available
Présentation du contexte temporel et des aspects méthodologiques liés à la réalisation de datations radiométriques dans la grotte Chauvet
Article
Full-text available
La datation par luminescence repose sur la capacité des minéraux à stocker l’énergie provenant des particules émises par la radioactivité naturelle. Il est ainsi possible de dater la dernière exposition à la lumière d’un minéral ou encore son dernier chauffage. Nous présentons ici les bases physiques et les récents développements de cette méthode d...
Technical Report
Full-text available
Le programme collectif de recherche, « Réseau de lithothèques en Nouvelle-Aquitaine » existe depuis 3 ans. Il joue un rôle important dans la consolidation d’une structure coopérative de recherche à l’échelle régionale et nationale. Le présent rapport expose un état de l’art des activités menées à bien en 2018 pour participer de façon efficace à la...
Technical Report
Full-text available
Le programme collectif de recherche réseau de lithothèques en Auvergne-Rhône-Alpes existe depuis 12 ans. Il est à l’initiative d’une synergie désormais reconnue sur l’origine des matières premières. Sa fonction est essentielle dans la consolidation d’une structure coopérative de recherche aux échelles régionale et nationale. Démarche nécessaire, qu...
Chapter
The Bronze Age decorated cave of Les Fraux (Dordogne, France) combines cave art and evidence for domestic and symbolic activities. The interdisciplinary research which has been conducted on the site since 2007 attempts to untangle the interwoven uses of this cave for later prehistoric communities, during short but regular human visitations, by comb...
Article
Full-text available
This paper deals with new strategies for dating the construction of ancient monuments, one of the most topical issues in archaeology. Our approach is demonstrated by the study of an emblematic early medieval Basilica Saint Seurin in Bordeaux whose oldest building phases have never been well-understood and dated before due to the lack of written sou...
Article
Abstract : My main aim in this paper is to present how the dating methods in archaeology have evolved for the last decades. We attempt at bringing into the light the factors that are at the origin of this evolution. Their consequences on the practice and the use of dating methods will be discussed, and on the changes in the chronological questions...
Article
Full-text available
The Grotte Chauvet is world renowned for the quality and diversity of its Palaeolithic art. Fire was particularly important to the occupants, providing light and producing charcoal for use in motifs. Charcoal samples were taken systematically from features associated with the two main occupation phases (Aurignacian and Gravettian). Analysis showed...
Article
Full-text available
The Grotte Chauvet is world renowned for the quality and diversity of its Palaeolithic art. Fire was particularly important to the occupants, providing light and producing charcoal for use in motifs. Charcoal samples were taken systematically from features associated with the two main occupation phases (Aurignacian and Gravettian). Analysis showed...
Article
Absolute dating of mortars is crucial when trying to pin down construction phases of archaeological sites and historic stone buildings to a certain point in time or to confirm, but possibly also challenge, existing chronologies. To evaluate various sample preparation methods for radiocarbon ( ¹⁴ C) dating of mortars as well as to compare different...
Article
Full-text available
This paper presents a chronological framework for the site of Les Pradelles (Marillac-le-Franc, Charente, France). In the East locus of the site, four meters of sediments preserve late Middle Paleolithic archaeological materials with Quina Mousterian lithics associated with abundant reindeer-dominated faunal remains. During the most recent excavati...
Article
Full-text available
Seven radiocarbon laboratories: Åbo/Aarhus, CIRCE, CIRCe, ETHZ, Poznań, RICH, and Milano-Bicocca performed separation of carbonaceous fractions suitable for ¹⁴ C dating of four mortar samples selected for the MOrtar Dating Inter-comparison Study (MODIS). In addition, optically stimulated luminescence (OSL) analyses were completed by Milano-Bicocca...
Book
Monography updating the present state of knowledge of Saint-Seurin Basilica in Bordeaux in a interdisciplinary and diachronical approach.
Article
Numerous fire marks occur on the walls of the Chauvet-Pont d’Arc cave. Dating indicated that some of the fires were contemporary to the Aurignacian. Violent thermal shocks were observed in surprisingly narrow areas of the cave. This raises numerous archaeological questions about the function of the fires; the answers depend on the location of the h...
Article
The use of the single grain technique can overcome problems posed by incomplete and heterogeneous bleaching of quartz grains during the making of archaeological lime mortars. In the view of evaluating reliable archaeological doses, we have developed non-standard statistical tools that describe residual dose distributions. For these purposes, a mode...
Article
Full-text available
Optically Stimulated Luminescence (OSL) is commonly used to date the last exposure of grains extracted from sediments to sunlight. However, it is frequent that some of the measured grains were not sufficiently exposed to light before burial. Such samples are said to be poorly bleached. We propose a new statistical model based on a Bayesian approach...
Article
The paper presents a novel archaeometric approach to identify the re-use phenomena in architecture. It is based on dating of mortar by optically stimulated luminescence (OSL) which allows determining the last exposure of quartz aggregate in mortar to daylight. We exploit the fact that the mortar was optically zeroed during its fabrication. This new...
Article
Full-text available
The paper focuses on single grain OSL dating of quartz extracted from known age archaeo-logical mortars, potentially representing a new tool for dating the construction of historical buildings. Apart from SG-OSL measurements and annual dose rate determination, the samples are systematical-ly studied by means of optical microscopy, EDX-SEM cartograp...
Article
Luminescence ages are calculated by dividing an absorbed dose by the dose rate to which the natural dosimeter has been exposed. In practice, one measures an equivalent dose, De; in the absence of an alpha dose contribution, this should be indistinguishable from the dose absorbed in nature. Here we first review the relationship between absorbed dose...
Article
Full-text available
Depuis sa découverte en 1994, la grotte Chauvet-Pont d'Arc fait l'objet d'études portant sur les dispositifs pariétaux, la spéléogenèse, les spéléothèmes ainsi que sur la taphonomie des sols et des parois. Sur ces dernières, un faciès de thermo-altération a été identifié, se présentant sous la forme de colorations grise et rose de la paroi, mais au...
Article
Full-text available
The foundations of Grimaldi castle in Antibes belonged originally to a vast monumental edifice of an unknown origin. No historical records that would allow establishing precise chronological framework of this building exist. Therefore, four approaches were combined in order to date its construction: relative chronology from archaeology with “physic...
Article
Full-text available
A function named textitanalyse_baSAR() was written using the statistical programming language textbfR and its code is now available within thetextbfR package 'Luminescence'. The function allows the application of the Bayesian hierarchical model 'baSAR' proposed by Combés et al. (2015) and comes with additional features to analyse luminescence data...
Conference Paper
Full-text available
Absolute dating of mortars is crucial when trying to pin down construction phases of archaeological sites and historic stone buildings to a certain point in time or to confirm, but possibly also challenge existing chronologies. It should become a standard tool for archaeometric research as it contributes considerably to the historical, artistic, so...
Conference Paper
Full-text available
The study shows how the unique combination of characterization techniques with the single grain OSL dating of mortar allows acquiring relatively complete information about the monument for which we miss the other, written or archaeological, source of information. Important differences in preparation technology of mortar are observed. The mortar app...
Article
Full-text available
Located in southwest France, Roc de Marsal is a cave with a rich Mousterian stratigraphic sequence. The lower part of the sequence (Layers 9–5) are characterized by assemblages dominated by Levallois lithic technology associated with composite faunal spectra (including red deer, roe deer and reindeer) that shows a gradual increase in the frequency...
Conference Paper
Absolute dating of construction materials represents one of indispensable means for building history. Recent researches [1] showed that in the Middle-Ages a re-use of bricks originating from older structures was a common phenomenon. Therefore, dating of bricks is not always representative for the erection of the masonry, the moment to be dated. Tha...
Article
n this study, we propose and implement a Bayesian model to estimate a central equivalent dose from a set of luminescence measurements. This model is based on assumptions similar to the ones used in the standard statistical pipeline (typically implemented in the Analyst software followed by a subsequent central equivalent dose analysis) but tackles...
Data
The Bergerac region of south-western France is well known for its wealth of Middle Palaeolithic open-air sites. However, their chronology remains poorly understood due to the complexity of the deposits and difficulties applying radiometric dating techniques. Combe Brune 2, excavated in 2006 and 2007 by the INRAP (Institut National de Recherches Arc...
Conference Paper
Full-text available
Absolute dating of construction materials represents one of indispensable means for building history, especially when combined with archaeological and historical sources of knowledge. The results of the interdisciplinary European research group “Ceramic Building Materials and New Dating Methods” showed that in the Middle-Ages a re-use of bricks ori...
Article
A novel approach to the intensity of archaeological fires is proposed, based on a combination of archaeological observations and analyses of sedimentary hearths with relevant proxies obtained from using experimental combustion structures. In this work, two different structures were built and monitored. They aimed at reproducing two types of archaeo...
Conference Paper
Full-text available
Des données chronologiques directes de la chauffe ancienne de parois de la Grotte Chauvet Pont-d’Arc ont été obtenues à la Galerie des Magacéros et dans l’Eboulis d’Entrée. Des fragments de calcaire rubéfié ont été extraits des parois et ont été étudiés par thermoluminescence (TL). Un nouveau protocole de mesure de la dose équivalente a été dévelop...
Article
Full-text available
Heated walls of the cave Chauvet-Pont d’Arc (Ardèche, France): characterization and chronology. Researches on the taphonomy of the rock art walls of the Chauvet-Pont d’Arc cave led to the identification and the detailed study of marks resulting from a heating process: pink and grey color of the rock, flakes due to the heat, and soot deposits. This...
Conference Paper
In this study, we focus on dating of archaeological mortars by Optically Stimulated Luminescence, the method that took, apart from its large use in geography and other related fields, a non-negligible position in archaeology. Current attempts in mortar dating focus especially on the radiocarbon method which use is conditioned either by the presence...
Article
Full-text available
In the cave of Les Fraux (Dordogne, France) numerous traces of fires are visible in the galleries. A multidisciplinary investigation was carried out to study these fires. This paper presents the methodology applied for the hearth study. It is based on the examination of the thermoluminescence (TL) of quartz and the magnetic susceptibility of iron o...
Article
Full-text available
The aim of the study presented here is to propose a new view on the chronology of early medieval buildings in Europe and on the related building modes. If several studies have proved the efficiency of this multidisciplinary process, the case of St. Irenee's church is very representative of the contributions of such an approach. This church is one o...
Article
Full-text available
Diversité des productions lithiques du Paléolithique moyen récent (OIS 4-OIS 3) : enquête sur le rôle des facteurs environnementaux, fonctionnels et culturels Résumé : Les avancées en technologie lithique et la mise en commun des données techno-économiques disponibles pour les industries lithiques du Paléo-lithique moyen récent mettent en évidence...