Granulometric and colorimetric data of the Crvenka-At Early Upper Paleolithic Site, Serbia

These datasets contain the color and grain size data for trenches 3, 3A, and 5 of the At site described in Nett et al. (2021). Sampling depths and laboratory numbers are given. Grain size was measured with a Laser Diffraction Particle Size Analyzer (Beckman Coulter LS 13 320) calculating the percentaged size frequency of 116 classes within a size range of 0.04–2000.00 µm (2% uncertainty). The measurement accuracy was increased by measuring each sample four times in two different concentrations. The grain size distributions were determined using the Mie theory (ISO International Standard 13320, 2009; Fluid RI: 1.33; Sample RI: 1.55; Imaginary RI: 0.1; Özer et al., 2010; cf. Schulte et al., 2016). The colorimetric properties of the sediments were determined as described in e.g. Eckmeier et al. (2013) and Vlaminck et al. (2016) using a Konica Minolta CM-5 spectrophotometer after the samples were homogenized and dried. The L*a*b* values indicate the extinction of light, on a scale from L* 0 (absolute black) to L* 100 (absolute white) and express color as chromaticity coordinates on red-green (a*) and blue-yellow (b*) scales. References Eckmeier, E., Mavris, C., Krebs, R., Pichler, B., and Egli, M. (2013). Black carbon contributes to organic matter in young soils in the Morteratsch proglacial area (Switzerland). Biogeosciences 10, 1265–1274. doi:10.5194/bg-10-1265-2013. Nett, J.J., Chu, W., Fischer, P., Hambach, U., Klasen, N., Zeeden, C., Obreht, I., Obrocki, L., Pötter, S., Gavrilov, M.B., Vött, A., Mihailovic, D., Markovic, S.B., and Lehmkuhl, F. (2021). The Early Upper Paleolithic site Crvenka-At, Serbia - The First Aurignacian Lowland Occupation Site in the southern Carpathian Basin. Front. Earth Sci. 9: 599986. Doi: 10.3389/feart.2021.599986. Özer, M., Orhan, M., and Işik, N. S. (2010). Effect of particle optical properties on size distribution of soils obtained by laser diffraction. Environ. Eng. Geosci. 16, 163–173. Schulte, P., Lehmkuhl, F., Steininger, F., Loibl, D., Lockot, G., Protze, J., et al. (2016). Influence of HCl pretreatment and organo-mineral complexes on laser diffraction measurement of loess–paleosol-sequences. Catena 137, 392–405. doi:10.1016/j.catena.2015.10.015. Vlaminck, S., Kehl, M., Lauer, T., Shahriari, A., Sharifi, J., Eckmeier, E., et al. (2016). Loess-soil sequence at Toshan (Northern Iran): Insights into Late Pleistocene climate change. Quat. Int. 399, 122–135. doi:10.1016/j.quaint.2015.04.028.