Accumulation of alkaline and alkaline-earth elements in subcolloidal fraction of bottom sediment at the river-sea geochemical barrier

Abstract

Data on the concentrations of alkaline (K, Li, Cs, Rb, Tl), alkaline-earth (Mg, Be), and other elements and humic acids in subcolloidal fraction of bottom sediment at river-sea geochemical barrier are given. Higher concentrations of Al and Mg is detected in river BS corresponding to the initial stage of water mixing. The increase in the concentrations of Li, Cs, and Rb is shown to best correspond to the accumulation of humic acids in marine deposits.