Late Holocene geomorphodynamics in the vicinity of Göbekli Tepe, SE Turkey

•Sediments in the close vicinity of Göbekli Tepe show Bronze Age to Byzantine ages.•Buried Bronze Age paleosols provide evidence for enhanced geomorphodynamics.•Enhanced geomorphodynamics coincide with human impact and climatic aridization. This study traces the geomorphological development in the environs of the Pre-Pottery Neolithic site Göbekli Tepe by means of radiocarbon dated sediment profiles from its close vicinity. Based on facies interpretation we identify different depositional environments and discuss the involved process dynamics. Our results show that the sediments from the foot slopes are characterized by soil creep and slope wash. Further downstream, in the proximal piedmont zone, fluvial deposition prevails forming a channel and an overbank facies. The sediments at the foot slopes were mainly deposited during Roman and Byzantine times, while those from the proximal piedmont zone cover the period from the Bronze Age to the Roman times. Phases of geomorphological activity and stability can be distinguished in the course of the later Holocene, where organic rich topsoils were buried at c. 4750, 4200, and 3650 cal. a BP documenting phases of landscape stability followed by enhanced geomorphodynamics. These phases fall into the Bronze Age in Anatolia and coincide with an increasing population, pronounced human impact, and climatic aridization that occurred in Turkey around 5.3–4.1 ka BP. Our findings provide among the first insights into the environmental development including the involved process dynamics in the vicinity of the UNESCO World Heritage site of Göbekli Tepe during the later Holocene, also allowing to further develop hypotheses for the period of its occupation.