
Hydroclimate variability and sediment provenance in the Dead Sea Basin during the Holocene
Abraham O. (1), Kiro Y. (1), Torfstein A. (2) (3)
(1) Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 7610001, Israel
(2) The Fredy and Nadine Herrmann Institute of Earth Sciences, The Hebrew University of Jerusalem, Israel
(3) Interuniversity Institute for Marine Sciences, Eilat 88103, Israel
Recent climate change projections for the Levant indicate a long-term drying trend accompanied by an increase in extreme precipitation events. Placing these trends in a longer-term context requires high resolution paleoclimate records from climate-sensitive regions. The Dead Sea basin, located at the interface between Mediterranean and desert climate systems, provides a unique archive of regional hydroclimatic variability.
This study presents high resolution radiogenic isotope data from detrital sediments recovered by the Dead Sea Deep Drilling Project (DSDDP) within the framework of the Intercontinental Scientific Drilling Program (ICDP), over the past 220 ka. The sedimentary sequence is independently constrained by radiocarbon and U–Th dating, enabling robust temporal interpretation of geochemical variability. We analyze Pb, Sr, and Nd isotopic compositions, together with major and trace element geochemistry, of grain-size–separated fine detrital material preserved in the deep-basin record, allowing improved discrimination between distinct sediment and dust sources and transport processes.
Variations in detrital provenance reflect changes in dust and sediment sources, atmospheric circulation patterns, and hydrological processes within the Dead Sea drainage area. These shifts document broader changes in Levantine environmental conditions during the current interglacial period, highlighting the sensitivity of sediment supply pathways to climate variability. By linking detrital source variability to regional and global climate drivers, this study contributes to a better understanding of Levantine hydroclimate sensitivity under changing climate and offers valuable context for evaluating future climate change in the region.



