The data support the interpretation of varying sediment facies and the reconstruction of the Holocene alluvial fan dynamics on the Deliktaş catchment in the micro-region of an ancient city Pergamon, west Turkey (Yang et al., under review). This dataset of sediment analyses was collected through the field work in the Deliktaş alluvial fan and laboratory measurements in the Bergama excavation house on October 2021. It comprises the geochemical and element composition of the sediment samples from five sediment sequences (Del-2, Del-3, Del-4, Del-5, and Del-6). Bulk geochemical sediment analyses include pH and electrical conductivity (EC) by a TDS/EC/pH/TEMP meter, mass magnetic susceptibility of low frequency (XLF) by Bartington magnetic susceptibility system (MS2B or MS3 sensor), and loss on ignition on 550 °C (LOI550) by temperature-controlled furnace. In order to test the suitability of the LOI550 for estimating organic matter, we measured the samples of two profiles (AD29 and AD30) from the western lower Bakırçay plain in the sedimentary laboratory in Freie Universität Berlin. The element composition was analyzed using the p-XRF device. The data of sediment samples were recorded in Excel, calculated and illustrated in R software (R Core Team, 2021) and imported into Inkscape software. The sample's depth is simplified by its middle depth. For the XLF measurement, the confidence intervals of the median are estimated by simple quantile bootstrapping (B = 1,000) in R. The sediment parameters of each sediment unit in this study are summarized in median and median absolute deviation (MAD, in brackets) which was calculated in R and they are descripted into 5 classes based on Yang et al. (2023).

The data contains 24 files, including 1 excel file of meta information, 1 excel file of calculated/summarized data, 5 csv files of Deliktaş fan sediment profile raw data, 2 csv files of AD profiles, 7 csv files of simplified data, 5 csv files of sediment unit boundary, 3 csv files of pXRF data.1. includes the information of event level, study area coverage, parameters.2. is the results calculated and summarized median values according the unit boundary. The R code refer to Yang et al. (2023).3. includes the raw data from Del-2 with the sampling range (upper and lower boundary), the mass weight of fine and coarse component, pH, electrical conductivity (EC, us cm-1), the measurement weight of loss on ignition, low frequency of magnetic susceptibility, and elemental ratios of Ca/Ti and K/Si.4. includes the raw data from Del-3 with the sampling range (upper and lower boundary), the mass weight of fine and coarse component, pH, electrical conductivity (EC, us cm-1), the measurement weight of loss on ignition, low frequency of magnetic susceptibility, and elemental ratios of Ca/Ti and K/Si.5. includes the raw data from Del-4 with the sampling range (upper and lower boundary), the mass weight of fine and coarse component, pH, electrical conductivity (EC, us cm-1), the measurement weight of loss on ignition, low frequency of magnetic susceptibility.6. includes the raw data from Del-5with the sampling range (upper and lower boundary), the mass weight of fine and coarse component, pH, electrical conductivity (EC, us cm-1), the measurement weight of loss on ignition, low frequency of magnetic susceptibility, and elemental ratios of Ca/Ti and K/Si.7. includes the raw data from Del-6 with the sampling range (upper and lower boundary), the mass weight of fine and coarse component, pH, electrical conductivity (EC, us cm-1), the measurement weight of loss on ignition, low frequency of magnetic susceptibility.8. includes the raw data from AD29 with the sampling range (upper and lower boundary), the values of LOI550, LOI900, TOC, and TIC.9. includes the raw data from AD30 with the sampling range (upper and lower boundary), the values of LOI550, LOI900, TOC, and TIC.10-16 files are the simplified data which are calculated from the raw data according to the corresponding equations.17-21 files are the sediment unit boundary based on the sediment features.22-24 files are the raw data of sediment profile of Del-2, Del-3, Del-5 exported from a portable energy-dispersive X-ray fluorescence spectrometer (p-ED-XRF; Thermo Fisher Scientific NITON XL3t) in the manufacture's "Mining Cu/Zn" mode with main, high, low, and light filters (50, 50, 15/20, and 8 kV, respectively) in a total of 120 seconds.