INAA study of the vertical distribution of some major and trace elements in lacustrine sediments of the Danube Delta

The vertical profiles of 4 major (Na, K, Ca and Fe) and 17 trace elements ( Rb, Cs, Ba, Sc, La, Ce, Sm, Eu, Tb, Yb, Lu, Th, U, Hf, Ta, Co and Cr) have been investigated in cores collected from three lakes: Lung, Mesteru and Fu rtuna, all of them situated in the Fluvio-lacustrine region of the Danube D elta. All profiles are characterized by a relatively uniform distribution o f these elements. The total rare earth elements to Sc correlation, as well as their concentrations normalized to the upper continental crust, determin e the continental origin of these sediments.