Archaeometric characterisation of coarse and painted fine ware from Posta Crusta (Foggia, Italy): technology and provenance

摘要

Coarse and painted fine wares from the Late Antique residential complex of Posta Crusta (Lucera, Foggia, Italy) have been here investigated. The ceramic characterisation was our main concern; even so, the provenance and the production technology have been further investigated, focusing on both ceramic bodies and coatings. Optical microscopy, scanning electron microscopy and a set of bulk chemical analyses (inductively coupled plasma optical emission spectrometry, inductively coupled plasma mass spectrometry, instrumental neutron activation and X-ray fluorescence) were used for the characterisation of 44 samples. Chemical and mineralogical data here obtained were compared with results previously achieved on San Giusto local production, in order to distinguish production areas and identify possible exchanges. As for coarse wares, the characterisation of Posta Crusta pottery shed new light for the reconstruction of the production/distribution framework of this part of northern Apulia. The following trends can be identified: (1) pots from Posta Crusta and San Giusto settlement that can be referred to a single production site, likely located in the nearby territory of one of this two sites; (2) pots from San Giusto kiln exported to Posta Crusta; (3) pots of unknown origin but compatible with the northern Apulian area. Furthermore, it was possible to verify that all Posta Crusta ceramics used the alluvial deposits widely outcropping in northern Apulia as received. As for painted fine wares, Posta Crusta samples enucleated a distinct and homogenous group, including six samples from San Giusto. This result is highly encouraging as it provides the clear evidence of a production group, although it is not possible to refer it to a precise locality. The marine deposits outcropping in northern Apulia can have been surely exploited for raw materials supply. Coatings texture seems to suggest two different ways of application: immersion and painting.