Production and circulation of thin walled pottery from the Roman port of Neapolis, Campania (Italy)

Seventeen samples of thin walled pottery from the Roman port of Neapolis (late II century BC - early III century AD) were studied in order to ascertain the type of clay and temper utilised, and their provenance. Seven samples of thin walled pottery from a homogeneous group (based on mineralogical and chemical characteristics) represent a local production of this ceramic class within the Neapolis area. This group was manufactured with a low-CaO clay, that probably derived from a weathered or alluvial deposit, together with reworked pyroclastic material (e.g., Sorrento area or Sebeto River plain) and volcanic sand from the Neapolitan area, containing both Somma-Vesuvius and Phlegraean Fields products. Two other fragments could be attributed to different Campanian production areas, such as the Pozzuoli area. Eight outlier fragments found in the port of Neapolis probably originate from extra regional production sites (e.g., southern Tuscany or the Arno valley)