Five ancient shipwrecks have been found in the sea off Croton, in southern Italy, each carrying a marble cargo composed of massive blocks, column shafts, and smaller artifacts. Three of them were located while surveying the seafloor with a multibeam sonar, and the remaining two with the help of divers, in the summers of 2005 and 2006. Two of the marble carriers are located in the bay of Punta Scifo and, therefore, are identified as the Punta Scifo A and Punta Scifo B shipwrecks, the remaining three take their names from the closest promontories: Punta Cicala, Capo Cimiti, and Capo Bianco. The Punta Scifo A shipwreck was chosen as the main focus of this work because it contains a unique assemblage of marble artifacts; including 13 basins, 15 stands decorated with lions’ paws, 16 column shafts, 14 blocks, 6 statue pedestals, and one statuette of Eros and Psyche. Moreover, because the original discovery dates back to 1908, and in 1915 salvors raised 150 tons of marble artifacts, much information was in danger of being lost. Consular inscriptions on the Punta Scifo A’s marble blocks and column shafts date the shipwreck to the early third century A.D. The merchantman was ca. 30 m long and 10 m wide, with a cargo of marble items weighting ca. 200 tons. The merchantman was loaded with its marble cargo in Asia Minor: all the items carried on board came from the quarries of Proconnesus and Docimium. The most likely point of departure was either Epheus or Miletus. While sailing toward the Strait of Messina, it is likely that a Grecale or Levante storm broke, and the helmsman was forced to look for shelter in the protected bay of Punta Scifo. Due to a change in wind direction a southerly Scirocco storm caused the ship to sink. Since the entire coastline south of Croton is totally unprotected to the south, there was no way for the crew to save their ship. Where the Punta Scifo A merchantman was destined remains unknown, although Rome appears to be a likely candidate.

This thesis aims to study the commercial mechanism of Ravenna in the Late Antiquity from the point of view of the amount, type and provenance of the imported stone artefacts (fragments of architectural decoration, revetments slabs, opus sectile, sarcophagi), based on the study of archaeological material from the site of the basilica and the monastery of San Severo in Classe (Ravenna). Ravenna represented an important administrative and cultural center in the 5th and 6th century, connecting western and eastern artistic influences and focusing herself on trade and production. Determination of the stone artefacts from the San Severo locality was principally based on the archaeometric methods and on the combination of archaeologic and geologic approach as well. Specific archaeometric methods (macroscopic, geochemical and mineralogical-petrographic analyses) together with a quantitative evaluation were applied. Many scientific works, dedicated till this time to the art history of late antique Ravenna and dealing also the argument of ravennate "marbles" presumed the prevailing provenance from Proconnesos and usual commercial relations between Ravenna and Constantinople as well. Constantinople played a role of a mediator of oriental localities and Ravenna. The hypothesis concerning the provenance of the...