## 4 Results  
### Core Description  
The Vouliagmeni core is characterized by a complex stratigraphy, with alternating laminated and non-laminated deposits (Figure 2). Sediment color (RGB) presented in % of all spectrums, has the highest values in the white (CaCO\({}_{3}\)) laminations and lowest values in the non-laminated deposits (Figure 2). The 8-bit image used for the grayscale analysis also displays the maximum values (\(\sim\)200) in the same regions. Laminated sediments occur throughout the sediment core but present a higher frequency from 220 to 430 cm. The mean thickness of the laminated sections in the core is around 9 cm.  
\begin{table}
\begin{tabular}{c c c c c c} \hline
**Lab no.** & **Sample Name** & **Sample Type** & **\({}^{14}\)C date** & **Error** & **cal BP** \\ \hline Poz-106723 & VOUL\_0.79 & Charcoal & 455 & 30 & 514 \\ Poz-106910 & VOUL\_1.85 & Charcoal & 1905 & 30 & 1841 \\ Poz-106912 & VOUL\_2.67 & Wood & 2440 & 30 & 2667 \\ Poz-107143 & VOUL\_2.92 * & Shell & 2890 & 35 & 3026 * \\ Poz-111943 & VOUL\_3.88 & Organic Sediment & 4700 & 35 & 5431 \\ Beta-543038 & VOUL\_4.18 & Organic Sediment & 5720 & 30 & 6444 \\ Poz-107144 & VOUL\_4.72 * & Shell & 7770 & 40 & 8460 * \\ Beta-543039 & VOUL\_5.20 & Organic Sediment & 8360 & 30 & 9406 \\ Poz-107146 & VOUL\_5.72 * & Shell & 9910 & 50 & 11,244 * \\ Poz-107047 & VOUL\_5.91 * & Shell & 10,260 & 60 & 11,832 * \\ \hline \end{tabular}
\end{table}
Table 1: List of radiocarbon samples from Lake Vouliagmeni core. Calibrated ages are presented in median values and were determined using IntCal13 calibration dataset [92]. * = Marine reservoir correction as suggested by [91].  
Grain size does not present significant variations in the sediment sequence, with silt and clay fractions ranging from 55 to 70% and 35 to 50%, respectively (Figure 2). Sand fraction was only recorded in the upper part of the sediment core (50-150 cm) ranging from 1 to 10% (Figure 2). The mineralogical composition of the non-laminated sections shows high variability, with quartz, calcite, halite, aragonite, albite and clay minerals displaying the highest compound. Quartz and calcite comprise the main mineralogical facies through the sequence and generally follow the same trend (Figure 2). Lower values of both minerals occur in sections 120-140, 320-330 and 450-470 cm. Halite values range from \(\sim\)0 to 10%, except for a single sample at 130 cm with a value of 60%. Aragonite and albite range from \(\sim\)0 to 8% and \(\sim\)0 to 7%, respectively, with no significant changes in the sequence. Clay minerals range from \(\sim\)1 to 20% with a mean value of 12%.  
The CaCO\({}_{3}\) content measured in the non-laminated parts ranges from \(\sim\)0 to 45%, with the highest values recorded at 320 and 380 cm (Figure 2). Carbonate precipitation seems to be constant in the system, as indicated by most measurements conducted on the core, but continuously altering regarding crystallization process. Samples examined for micro and macrofauna remains were all barren, except for five samples at 85, 290, 470, 570 and 590 cm, where minor assemblages of intact juvenile _Cerastoderma glaucum_ shells were recognized and used for radiocarbon dating.  
Figure 2: Log profile of Vouliagmeni core presenting (from left to right): Line scan image of the core, RGB (%) profile, 8-bit grayscale image, grayscale analysis values, grain size distribution, mineralogical composition (%) (Qz: quartz, Ca: calcite, Ha: halite, Ar: aragonite, Al: albite, CM: clay minerals) and CaCO\({}_{3}\) content.