overbank silt-clay deposition sampling (4*4 km grid, Weiße Elster catchment, Salsitz-Trebnitz section)

We used stationary XRF spectrometry for analysing elemental composition of bank and streambed samples from Weiße Elster sub-basins (refined grids of 4*4 km). For XRF sample preparation freeze-dried catchment sediments (8 g) were seaved (2mm) to discard the gravel fraction and large organic matter. Further homogenization was undertaken by grinding the samples with a vibratory Retsch mill MM 200. We created uniform pellets by pressing the powdered samples with a carbon-based binding agent in a Vaneox press at 20 t for 2 min. We conducted elemental analyses in a He atmosphere using a Spectro Xepos energy dispersive XRF spectrometer. The XRF element data of the refined 4*4 km sampling grid of recent fluvial sediments in the direct proximity to the Salsitz transect are provided here. The data set has to be understood as a supplement or densification of the 8*8 km sampling grid of the Weiße Elster river catchment: doi:10.1594/PANGAEA.937926.

本研究采用固定式X射线荧光光谱法（X-ray Fluorescence, XRF），对白埃尔斯特河（Weiße Elster）子流域的4km×4km加密采样网格对应的岸堤与河床样品开展元素组成分析。样品前处理流程如下：称取8g冻干的流域沉积物，以2mm孔径筛进行筛分，剔除砾石组分与大粒径有机质；随后采用莱驰Retsch MM 200型振动研磨仪对样品进行研磨，以实现进一步均质化；以碳基粘结剂为助剂，在Vaneox压片机中以20吨压力压制2分钟，制备得到均匀压片。本研究在氦气氛围下，使用斯派克Spectro Xepos型能量色散X射线荧光光谱仪完成元素分析。本文提供的数据集包含萨尔齐茨断面Salsitz transect周边紧邻区域内现代河流沉积物的4km×4km加密采样网格的XRF元素数据。本数据集可作为白埃尔斯特河流域原有8km×8km采样网格的补充与加密，其关联DOI为10.1594/PANGAEA.937926。