(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.