Geoarchaeology at the marine waterfront of a coastal urban center: Human activities and sea-land interface processes on the Late Bronze and early Iron Age coast of Tel Dor, Israel

Geoarchaeological research at coastal urban sites in the Levant focused until recently on two research directions: the identification of ancient harbors and the study of occupation deposits in settlement portions that are located well above sea level (i.e., 'dry' excavations). Here we present a geoarchaeological study of the southern maritime waterfront of Tel Dor following a coastal excavation at an elevation that is close to current sea level. The research addresses stratigraphic relationships between underwater, coastal and fully terrestrial architectural features (wall remains) and these provide the context for deposits found within the site's perimeter. These coastal deposits were then studied using sediment micromorphology as well as stable carbon and oxygen isotope analysis. Three depositional units have been identified. The lower was found to be coastal deposits earlier than the Iron Age IB (Ir1b, 11-10th c. BCE). The middle unit is an ash deposit containing pottery and bone refuse dating to the Ir1b, probably a town dump, that became indurated due to sea level rise and resembles beachrock. The upper unit is composed of tell occupation deposits, including phytolith-rich layers and evidence for wood ash and compacted livestock dung as in stabling deposits. The latter, dated to the Ir1b – Ir2a (i.e. up-to and including the 9th c. BCE), reflects dumped refuse and livestock keeping in a terrestrial (i.e. non-marine) environment. Overall, this study provides initial insights into site formation processes and human activities at Dor's maritime interface during the Iron Age.