Multiple alternating series of permeable and impermeable strata are one of the main characteristics of the Pleistocene alluvial deposits of the Sava River. This cyclical pattern is a result of climate changes in the Pleistocene and interchanging warm and cold stages. The origin and properties of the Pleistocene alluvial sediments determine aquifer capacity and groundwater extraction conditions, as well as those that affect sustainable development and conservation of groundwater sources that tap alluvial aquifers. To understand the processes that lead to well ageing and capacity decline, it is of the essence to delineate and define the lithostratigraphic units (alluvial sedimentation cycles) and determine their hydrogeological properties and genesis conditions. The paper describes a method used for investigating polycyclic alluvial sediments at Belgrade Groundwater Source, presents their main lithological and hydrogeological characteristics, and discusses groundwater extraction issues from the perspective of their genesis.
Key words: Pleistocene, alluvial sediments, lithostratigraphic units, hydrogeological characteristics, Belgrade Groundwater Source
Topic: GEOLOGY