In this study, the date of the Holocene sediments of Kulakçayırı Lake was determined and the
sedimentation rates were calculated. The determined sedimentation rates provide important clues about
the climatic and ecological characteristics of the study area. Especially in aquatic environments, it is
important to date sediment processes in order to monitor the time-dependent changes in the pollution
processes of sediments. In this context, radiocarbon (14C) analysis was performed in order to date the
sediments. Liquid scintillation spectrometry was used to find the radioactivity of the 14C isotope. Three
drilling samples were taken from the study area (Kulakçayırı Lake / Istanbul) for 14C analysis.
According to the results of 14C analysis of the samples taken; Sediment deposition in SK-1 sample took
place in 5599 years, in SK-2 in 7596 years and in SK-3 in 8060 years. Sedimentation rates are; SK-1>
SK-2> SK-3. From the data obtained, it was observed that the sedimentation rate has different rates at
different points of the lake. There is no stream bringing material to the lake. Therefore, it can be said
that a slow storage dominates the lake in general.