Chronology and environmental changes from a sediment core spanning the last 487 kafrom Lake Acıgöl (SW Anatolia)

This study details the construction of an age-depth model for the uppermost 128 meters of the 600 m long Acıgöl2009-B03 sediment core, retrieved from hypersaline Lake Acıgöl in southwestern Anatolia. The model matches the arboreal pollen record from Acıgöl2009-B03 with the LR04 benthic δ18O stack marine oxygen isotope record. Initial correlation employs the Dynamic Time Warping algorithm, refined through manual tuning. Validation of the model's accuracy incorporates multiple chronological constraints, including three radiocarbon dates, three U/Th dates, and the Kos Plateau Tuff, dated at 161.3 ± 0.1 ka. According to this model, the upper 128 meters of the Acıgöl2009-B03 sequence spans approximately the last 487,000 years, encompassing Marine Isotope Stages (MIS) 1 to 12 and part of MIS 13. Our model serves as an update to the previously published, linearly constructed, age model as being used more anchor point and an efficient algorithm for similarity measurements which lies on a robust statistical foundation. In this period, arboreal pollen data suggest increasing (decreasing) arboreal vegetation input during interglacial (glacial) periods.