Unterschiede in den Chemischen und Physikalischen Eigenschaften von Fluviatilen, Brackischen und Marinen Sedimenten

Abstract

Publisher Summary The variable salinity and the different composition of salts dissolved in fresh water, brackish water, and sea water are, among the other things responsible for great differences in the cation adsorption in the particular sediments. In fresh water calcium ions are predominantly adsorbed, in brackish water magnesium ions, and in sea water sodium ions. Another factor of importance is the decrease of calcium carbonate deposition from the marine to the brackish water environments. The cation adsorption of fluviatile and brackish sediments is only insignificantly affected by soil forming processes. The variable salinity in fresh, brackish and marine waters influence the chemical properties of the sediments and the soils originating from there and, in consequence, also their physical properties. In fresh water the calcium adsorption leads to a certain flocculation, so that sediments and soils show a lower degree of compaction and a higher permeability.