The radiocarbon dates of trench ABO and AB4 all fall within a very short time range between 9660 cal. BC and 9320 cal. BC. However, in both dated sequences the upper layers of the first main occupation period [CH 2B; CH 21] were much younger, dating between 9450 cal. BC and 9320 cal. BC. 
The older phases down to -300 cm largely overlap. They match the course of the calibration curve and correspond to a plateau. The calibrated dates are therefore lengthened, and it is impossible to decide whether they document a very short occupation period or in fact correspond to about 150-250 years. Wiggle matehing suggests very short gaps of probably one generation or less between the different phases. The dates precisely fit the time range calculated for the Early PPNA at other sites. The oldest radiocarbon dated Phase Vl suggests a date of 9620 cal. BC right at the transition from the Younger Dryas (YD) to the Early Holocene. Though Phase Vll, the oldest excavated so far, has not yet been dated, it is likely that a settlement had already been established on the site during the last phase of the YD. 
The architectural remains and the material assemblage recovered at Körtik Tepe present a picture parallel to those other contemporary sites of the Upper Tigris Valley, Hallan Cemi being first in line. from the testimony of the finds recovered in the dwellings and in the graves as burial gifts, faunal analyses, and all the other evidence, Körtik Tepe shows us without any doubt that it is a site of the Pre-Pottery Neolithic A period. Previously, depending on the then available C14 dates, we had been considering the earlier parts of the 10th millennium BC as the beginning stage of the site; however, as noted above, the new radiocarbon dates have now pushed the earliest horizon of Körtik Tepe to the firsthalf of the 11th millennium BC, thus making it one of the oldest known Settlements in Anatolia. Here it is worth noting that there are some finds, such as the microliths of Epi-Paleolithic tradition with parallels at Hallan Cemi and the macro points with inverted backs, which hint at the possibility of still an earlier occupation layer at Körtik Tepe.