Geoarchaeological evidence of late and post-Antiquity (5th-9th c. AD) climate changes recorded at the Roman site in Plemići Bay (Zadar region, Croatia)

Abstract

Remains of a vast Roman pottery production complex were found on the shore of the Plemi ć i Bay (Op ć ina Ražanac, Zadar county) in 2012, and confirmed by geophysical survey. Ground-penetrating radar measurements revealed outline of a rectangular building that finds analogies with Roman storehouses ( horreum ). The area occupied by remains of the Roman pottery workshop was covered by immense soil-debris flows. Three geological exposures located to the north of the remains of the Roman building were documented using lithological and malacological analysis, and magnetic susceptibility measurements. The profiles revealed at least three generations of slope sediments, formed in result of intensive soil or debris flows in a dry climate, most probably in 5 th c. AD. In the next, wet phase sediments were transported downslope and deposited on the Roman structures after 5 th c. AD. Environmental conditions at Pelmi ć i were supply with paleoclimate evidence from the Adriatic region. At ca. 1.5 cal. BP lake levels in the eastern Adriatic area were drastically reduced, probably because of strong decrease in humidity, correlated with the so-called North Atlantic Bond event 3. The drought was followed by a humid episode, also attested at the Plemi ć i archaeological site.