Chronological study of the chapel Saint-Jean-Baptiste de la Cité in Périgueux, France: contribution of mortar luminescence dating to building archaeology
| hal.structure.identifier | IRAMAT-Centre de recherche en physique appliquée à l’archéologie [IRAMAT-CRP2A] | |
| dc.contributor.author | JAVEL, Jean-Baptiste | |
| hal.structure.identifier | IRAMAT-Centre de recherche en physique appliquée à l’archéologie [IRAMAT-CRP2A] | |
| dc.contributor.author | URBANOVÁ, Petra | |
| hal.structure.identifier | IRAMAT-Centre de recherche en physique appliquée à l’archéologie [IRAMAT-CRP2A] | |
| dc.contributor.author | GUIBERT, Pierre | |
| hal.structure.identifier | Ausonius-Institut de recherche sur l'Antiquité et le Moyen âge | |
| dc.contributor.author | GAILLARD, Hervé | |
| dc.date.conference | 2018-05-20 | |
| dc.description.abstractEn | Saint-Jean-Baptiste de la Cité in Périgueux (Dordogne, France) is a historical monument that has been classifiedfor its high quality Renaissance style. Recent archaeological works (2008) had revealed seven states ofconstruction and transformation since the Gallo-Roman Antiquity until the present[1]. The oldest phase ofconstruction is dated to the end of the 3rd c. AD according to the coins that were found in layers in connectionwith the corresponding masonries. The reconstruction of the choir in the Renaissance style is precisely dated1521 AD by an inscription. This phase and the Gallo-Roman one are the only periods that are precisely known.Between them, two successive periods of construction were defined the dates of which were uncertain until now:i) a polygonal apse building associated with a cocciopesto floor (lime mortar with fragments of bricks), that isidentified as a possible element of the paleo Christian episcopal complex of Périgueux.ii) the square chevet of a medieval episcopal chapel.Our study aims at determining the absolute chronology of the building sequence and particularly these twoimprecisely dated phases. For that purpose, single grains OSL dating was used[2]. Numerous samples of mortarand sediments were sampled. The SG-OSL results on mortars and sediment taken from the well dated structuresare in agreement with the expected chronology. The SG-OSL results also indicate that the polygonal apse wasbuilt around the 4th – 5th c. AD. and made probably part of a larger primitive Christian complex. An earlymedieval structure built within the 7th-8th c. AD has also been identified. The plasters analyzed from theelevated parts interpreted as the remains of the medieval choir are related to the Romanesque period, between10th-12th c. AD. This wall could have been neither probed, nor sampled. At this point of the study we are notable to clarify if the wall made part of a Romanesque reconstruction, or if it is related to a repointing of theinternal early medieval building. Finally, the northern wall of the nave, initially assumed to be medieval, wasfound to be in fact a Gallo-Roman wall, integrated in the successive constructions. Our research on the chapel ofSaint-Jean-Baptiste is one of the first case studies that clearly illustrates the potential and relevance of the SGOSLmortar dating for building archaeology, in particular for deepening knowledge on many poorly knownearly medieval monuments.[1]GAILLARD H., 2015, Un nouvel élément dans la topographie chrétienne de Périgueux : la chapelle SaintJean-Baptiste à la Cité, in CARTRON I., HENRION F., SCUILLER C. (dir.) : Les sarcophages de l'Antiquitétardive et du haut Moyen Âge : fabrication, utilisation, diffusion, Actes des XXXe Journées internationalesd'archéologie mérovingienne, Bordeaux 2009.[2]URBANOVÁ P. & GUIBERT P., 2017. A methodological study on single grain OSL dating of mortars :comparison of five reference archaeological sites, « Geochronometria », 44, pp. 77-97. | |
| dc.language.iso | en | |
| dc.subject.en | Lime mortar | |
| dc.subject.en | building archaeology | |
| dc.subject.en | luminescence dating | |
| dc.subject.en | Late Roman Antiquity | |
| dc.subject.en | Middle Ages | |
| dc.title.en | Chronological study of the chapel Saint-Jean-Baptiste de la Cité in Périgueux, France: contribution of mortar luminescence dating to building archaeology | |
| dc.type | Autre communication scientifique (congrès sans actes - poster - séminaire...) | |
| dc.subject.hal | Sciences de l'Homme et Société/Archéologie et Préhistoire | |
| dc.subject.hal | Sciences de l'Homme et Société/Architecture, aménagement de l'espace | |
| dc.subject.hal | Sciences de l'Homme et Société/Histoire | |
| dc.subject.hal | Sciences de l'Homme et Société/Art et histoire de l'art | |
| bordeaux.country | MX | |
| bordeaux.title.proceeding | International Symposium of Archaeometry (ISA) | |
| bordeaux.conference.city | Merida | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02471974 | |
| hal.version | 1 | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02471974v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=JAVEL,%20Jean-Baptiste&URBANOV%C3%81,%20Petra&GUIBERT,%20Pierre&GAILLARD,%20Herv%C3%A9&rft.genre=conference |
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