Chronological and sedimentological data from surveyed sites in Tadjoura (Djibouti) of the field seasons 2023 and 2024

We present data from two geoarchaeological/ethnohistorical field campaigns carried out in Tadjoura (Djibouti) in 2023 and 2024. It accompanies the paper Hardt et al. (submitted to Archäologische Forschungen in Afrika in March 2025): Ancient routes of interaction in the historical sultanate of Tadjoura - results of two geoarcheological and ethnohistorical research seasons in 2023 and 2024 The data published here come from sediments sampled within archaeological structures and are used for their detailed description and dating. For radiocarbon dating, charcoal or other organic fragments were extracted from the sediment by floatation. The dating was carried out at the Poznan Radiocarbon Lab via AMS. The sedimentological parameters include grain size distribution curves based on laser diffraction measurements (3 measurements per sample; Beckman Coulter LS 13320) and raw data of the elemental composition obtained by a portable energy-dispersive X-ray fluorescence (XRF) spectrometer (Thermoscientific Niton XLt3). Sedimentological works were carried out in the laboratory for Physical Geography at Freie Universität Berlin. The preparation steps followed the standard laboratory procedure (cf. Hardt et al., 2023; doi.org/10.5194/egqsj-72-37-2023). The raw XRF data include measurements of the following standard material that can be used for calibration: RF25 => NCS DC 73325 Soil, China National Analysis Center for Iron and Steel (2008) RF87 => NCS DC 73387 Soil, China National Analysis Center for Iron and Steel (2008) RF89 => NCS DC 73389 Soil, China National Analysis Center for Iron and Steel (2008)