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pek OLSUN, Demet BLTEKN, Georg Johannes SCHWAMBORN
 


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PALEOCLIMATIC CHANGES OF LAKE AKGL (TERME, SAMSUN, TRKIYE) DURING THE LATE HOLOCENE
 
In this study, we investigated the paleoclimatic and geochemical changes in the Late Holocene period in Lake Akgl (Terme), located in Samsun, Black Sea. Approximately 19% of the lagoons in the coastal regions of Turkey are located on the Black Sea coast. Among these lagoons, Akgl Lake is a lagoon lake located in the east of Yeilrmak Delta. Water areas called lagoons or coastal barrier lakes are special ecosystems that are mostly ecologically important, extending parallel to the coast, their connection with the sea is provided by one or more narrow openings. Since coastal barrier lakes are very sensitive to environmental effects, it is clear that they have been exposed to limnological and climatic changes in the past. Using the core drilling, we retrieved a gravity sediment core, Akgl-02 from the sediment on the bottom of the Akgl which provides a high-resolution record of environmental change. The purpose of this study is to examine paleoenvironmental changes that impact the region of the Black Sea, therefore, we analysed a 193-cm-long sediment core using multi-proxy analyses with high resolution to demonstrate the paleoclimatologic and paleoenvironmental changes in Akgl sediment in Terme (Samsun, Trkiye) during the last 2600 years. The preliminary results of the multi-proxy analysis (XRD, XRF, grain size) suggest that the climate of the region was cooler/drier in during 2600 cal yr BP. This study was granted by stanbul Technical University (TU) Scientific Research Projects (BAP) with project number MYL-2022-43649.

Anahtar Kelimeler: Lake Akgl, XRD, XRF analysis, Late Holocene, Paleoclimate