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Geoarchaeology confirms location of the ancient harbour basin of Ostia (Italy) (Articolo in rivista)

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Geoarchaeology confirms location of the ancient harbour basin of Ostia (Italy) (Articolo in rivista) (literal)

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Goiran, Jean-Philippe; Salomon, Ferreol; Mazzini, Ilaria; Bravard, Jean-Paul; Pleuger, Elisa; Vittori, Cecile; Boetto, Giulia; Christiansen, Jonatan; Arnaud, Pascal; Pellegrino, Angelo; Pepe, Caterina; Sadori, Laura (2014)
Geoarchaeology confirms location of the ancient harbour basin of Ostia (Italy)
in Journal of archaeological science
(literal)

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Goiran, Jean-Philippe; Salomon, Ferreol; Mazzini, Ilaria; Bravard, Jean-Paul; Pleuger, Elisa; Vittori, Cecile; Boetto, Giulia; Christiansen, Jonatan; Arnaud, Pascal; Pellegrino, Angelo; Pepe, Caterina; Sadori, Laura (literal)

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Centre National de la Recherche Scientifique (CNRS); Centre National de la Recherche Scientifique (CNRS); Roma Tre University; Centre National de la Recherche Scientifique (CNRS); Centre National de la Recherche Scientifique (CNRS); Soprintendenza Spectate & Beni Archeol Roma; Sapienza University Rome; Sapienza University Rome (literal)

Titolo

Geoarchaeology confirms location of the ancient harbour basin of Ostia (Italy) (literal)

Abstract

To the northwest of the ancient city of Ostia, the analysis of cores revealed a stratigraphic sequence, which we interpret as the filling of a harbour basin. This basin, located at the west of the so-called \"Palazzo Imperiale\" presents seven characteristics: (1) The maximum depth is 6 m below the Roman sea level. This depth allowed any type of ship (even heavy tonnage) to access the harbour. (2) A chronostratigraphic gap at -6 m below Roman sea level suggests digging operations in the basin (or subsequent dredging) that have caused the loss of sedimentary archives. (3) The filling consists of dark clays typical of a quiet environment but open to marine and river influences. (4) The dates at the base of this sequence give a range between the 4th and the 2nd century BC. (5) In the harbour sequence, a fades change at -2.5 m under the Roman sea level involves a change in the processes of sedimentation and/or operation. (6) No later than the beginning of the 1st century AD, the thickness of the water column in the basin is less than 50 cm and seems to be caused by a massive siltation following a succession of floods of the Tiber. (7) This basin was thus already abandoned during the start-up of Portus. (C) 2013 Elsevier Ltd. All rights reserved. (literal)

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