Research article E&G Quaternary Sci. J., 69, 139–160, 2020 https://doi.org/10.5194/egqsj-69-139-2020 © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License. A 2600-year high-resolution climate record from Lake Trichonida (SW Greece) Joana Seguin1, Pavlos Avramidis2, Walter Dörfler3, Alexandros Emmanouilidis2, and Ingmar Unkel1 1Institute for Ecosystem Research, Christian-Albrechts-Universität, Olshausenstraße 75, 24118 Kiel, Germany 2Department of Geology, University of Patras, Rio, 26504 Patras, Greece 3Institute of Pre- and Protohistoric Archaeology, Christian-Albrechts-Universität, Johanna-Mestorf-Straße 2–6, 24118 Kiel, Germany Correspondence: Joana Seguin (
[email protected]) Relevant dates: Received: 8 January 2020 – Revised: 30 June 2020 – Accepted: 28 July 2020 – Published: 8 October 2020 How to cite: Seguin, J., Avramidis, P., Dörfler, W., Emmanouilidis, A., and Unkel, I.: A 2600-year high- resolution climate record from Lake Trichonida (SW Greece), E&G Quaternary Sci. J., 69, 139–160, https://doi.org/10.5194/egqsj-69-139-2020, 2020. Abstract: This paper aims at reconstructing the palaeoclimatic changes during the last 2600 years in southern Greece based on a proxy record from Lake Trichonida. For the first time, we provide a reliable age- depth model and continuous geochemical data for the largest and deepest lake in Greece. We use X-ray fluorescence (XRF) geochemical data supported by discrete mineral analysis based on X-ray diffraction (XRD), grain size distribution, and organic matter content to investigate changes in the lake sedimentary system and identify the major forcing mechanisms. A principal component analysis based on the XRF geochemical composition identifies the variation between carbonate-rich material, precipitating predominantly under drier and/or warmer conditions, and terrigenous sediment input, with it being more prominent during wetter and/or colder conditions.