(Table 1) XRF element analysis on whole rock sample of sediment core CRP-1

Analytical uncertanties is always around 1% for major elements but MgO and Na2O that are determined with a lower accuracy, in the order of 20% and 5% respectively. Analytical precision is stimated to be better than 5% for trace element concentrations greater than 10 ppm. No correction on LOI for iron oxidation or CaCO3 presence is provided.主量元素（major elements）的分析不确定度（Analytical uncertainty）普遍约为1%，但氧化镁（MgO）与氧化钠（Na2O）的测定准确度较低，分别约为20%和5%。针对浓度大于10ppm的微量元素（trace elements），其分析精密度（Analytical precision）估算优于5%。本数据集未针对铁的氧化作用或碳酸钙（CaCO3）的存在对烧失量（Loss on Ignition，LOI）进行校正。