A visual and instrumental multi-technique approach has been carried out on 10 geological samples collected from the fossiliferous limestone of the Villagreca Unit, in Nurallao (central Sardinia, Italy), in which the likely prehistoric quarry of Perda Tellada is located. Macroscopic examinations and chemical measurements by non destructive ED-XRF, ICP-OES and ICP-MS have been performed on the geological material. This study has allowed us to determine the geochemical intra-source variability of the lithic raw material. Furthermore, the mineralogical investigation by PXRD and the ICP-OES data on geological samples, have led us to define some technological properties of the local limestone. Conversely, on 13 eneolithic anthropomorphic limestone sculptures from the archaeological site of Aiodda-Nurallao (‘menhir statues’ of III millennium BC), nine without any scientific edition and five published, according to conservative requirements we have achieved only non destructive ED-XRF measurements and visual observations. Through the comparison between artifacts and lithological outcrop’s analytical data, we have been able to define the precise original source of the raw materials employed for the prehistoric megaliths, establishing spatial relationships between the stone sources and the sites where the sculptures had been found.

A preliminary archaeometric study of eneolithic anthropomorphic statues from Nurallao (central Sardinia, Italy)

SERRA, MARCO
Primo
Investigation
;
MAMELI, VALENTINA
Secondo
Investigation
;
CANNAS, CARLA
Ultimo
Supervision
2016-01-01

Abstract

A visual and instrumental multi-technique approach has been carried out on 10 geological samples collected from the fossiliferous limestone of the Villagreca Unit, in Nurallao (central Sardinia, Italy), in which the likely prehistoric quarry of Perda Tellada is located. Macroscopic examinations and chemical measurements by non destructive ED-XRF, ICP-OES and ICP-MS have been performed on the geological material. This study has allowed us to determine the geochemical intra-source variability of the lithic raw material. Furthermore, the mineralogical investigation by PXRD and the ICP-OES data on geological samples, have led us to define some technological properties of the local limestone. Conversely, on 13 eneolithic anthropomorphic limestone sculptures from the archaeological site of Aiodda-Nurallao (‘menhir statues’ of III millennium BC), nine without any scientific edition and five published, according to conservative requirements we have achieved only non destructive ED-XRF measurements and visual observations. Through the comparison between artifacts and lithological outcrop’s analytical data, we have been able to define the precise original source of the raw materials employed for the prehistoric megaliths, establishing spatial relationships between the stone sources and the sites where the sculptures had been found.
2016
978-1-78491-423-3
Une approche multi-technique, autoptique et instrumentale, a été effectuée sur 10 échantillons géologiques recueillies à partir du calcaire fossilifère de la formation de Villagreca, dans Nurallao (centre de la Sardaigne, Italie), dans lequel il y a la carrière de pierre probablement préhistorique de Perda Tellada. Sur le matériau géologique, ont été utilisés une étude macroscopique et des techniques d’analyses chimiques telles que ED-XRF par approche non destructive, ICP-OES et ICP-MS. Cette étude nous a permis de déterminer la variabilité géochimique de la matière première lithique. En outre, l’investigation de minéralogie par PXRD et les données ICP-OES sur des échantillons géologiques, nous ont conduits à une définition de certaines propriétés technologiques de calcaire local. Sur 13 sculptures anthropomorphes chalcolithique de calcaire du site archéologique de Aiodda-Nurallao (‘statues-menhirs’ du III millénaire a. J.C.), neuf sans aucune édition scientifique et cinq publié, selon les exigences conservatrices nous avons obtenu que des mesures de fluorescence non destructifs et observations autoptiques. Grâce à la comparaison entre les artefacts et les donnés analytiques des affleurements lithologiques, nous avons été en mesure de définir la source d’origine précise des matières premières utilisées pour les mégalithes préhistoriques et d’établir des relations spatiales entre les sources de pierre et les sites où les sculptures avaient été trouvés.
Sardinia; Copper Age; Menhir; Provenance study; Technological properties
Sardaigne; Chalcolithique; Menhir; Etude de la provenance; Propriétés technologiques
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/178332
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