Geoarchaeological evaluation of the Roman topography and accessibility by sea of ancient Osor (Cres Island, Croatia)

Author(s)
Erich Draganits, Susanne Gier, Nives Doneus, Michael Doneus
Abstract

We combine geoarchaeological investigations with high-resolution airborne laser scanning (ALS) topographic and airborne laser bathymetric (ALB) measurements to reassess the topography of the Roman city of Apsorus (modern Osor, northeastern Adriatic Sea, Croatia), which has generally been interpreted as important nodal point of Roman maritime traffic. Apsorus is located at the isthmus connecting Cres and Lošinj islands, which is 90 m wide at the narrowest part and dissected by a canal of supposed Roman age. A conspicuous low-lying wetland north of the city has been suggested to be a former sea passage and harbour area. Geoarchaeological coring, sedimentological analysis and radiocarbon dating suggest that this depression was already silted up with terrestrial sediments some 6,000 years ago and, especially in combination with the lower sea-level at that time, could not have been a Roman harbour. The combination of the ALS/ALB topographic data with lower sea-levels reconstructed for the Roman period challenges the traditional view which places ancient Osor on a small island and allows for new interpretations of the accessibility of Osor by sea.

Organisation(s)
Department of Evolutionary Biology, Department of Geology, Department of Prehistoric and Historical Archaeology, Department of Geography and Regional Research
External organisation(s)
Österreichische Akademie der Wissenschaften (ÖAW)
Journal
Austrian Journal of Earth Sciences
Volume
112
Pages
1-19
No. of pages
19
ISSN
2072-7151
DOI
https://doi.org/10.17738/ajes.2019.0001
Publication date
2019
Peer reviewed
Yes
Austrian Fields of Science 2012
105101 General geology, 601003 Archaeology, 207402 Remote sensing
Keywords
ASJC Scopus subject areas
Geology, Palaeontology, Stratigraphy
Portal url
https://ucrisportal.univie.ac.at/en/publications/27216614-3adb-4948-8bbf-6634a79ab1d9