Geoarchaeological investigations around Kültepe (Kayseri)

Ömeroğlu, Işıl
The purpose of this study is to investigate the effect of geology on ancient Kültepe settlement located in a tectonically active area, namely Sarımsaklı basin, shaped by Central Anatolian Fault Zone. Four main data sources used in this study are geological map, digital elevation model (DEM), slip plane and the borehole data. Geological maps are used for the determination of key horizons and the faults shaping the basin. Slip data measured in the field are used to identify the nature of the faults. Borehole data are used for the preparation of Quaternary thickness map and the borehole-to-borehole sections across the basin. Morphology of the area is investigated using the DEM with a particular emphasis on the drainage characteristics of the basin. The analyses have shown that the faults shaping the basin are still active suggesting vertical movements today as well as during the historical period. According to morphological analysis, the basin is drained by a single channel (Karasu river) which is controlled by the western segment of the fault zone. If the fault activates, the channel is elevated resulting in the formation of a lake behind the channel. Accordingly, the present morphological configuration suggests that a water level elevated for 70 m will totally bury Kültepe.