Stratigraphic characteristics of quaternary deposits on the left bank of the Sava River near Belgrade

Slobodan Knezevic,Jelena Zaric,Katarina Bogicevic,Drazenko Nenadic,Barbara Radulovic

doi:10.2298/gabp1879021k

Slobodan Knezevic, Jelena Zaric + Show 3 more

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https://doi.org/10.2298/gabp1879021k

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Quaternary deposits on the banks of the Sava River in the Belgrade area have a significant thickness and they are represented by genetically different formations. The data about these sediments were obtained by exploration of two relatively shallow boreholes, RB 47/P-1 and RB 53/P-1, located on the left bank of the Sava River. Two genetic entities are distinguished: the lacustrine-palustrine deposits of Plio-Pleistocene age and alluvial deposits of Pleistocene and Holocene age. Deposits of the Plio-Pleistocene are clearly different, both lithologically and palaeontologically, from the overlying alluvial deposits. Lithologically similar fluvial deposits of the Pleistocene and Holocene age were distinguished according to their palaeontological characteristics, particulary by the presence of bivalve genera Corbicula and Dreissena.

Highlights

The Sava River separates the administrative areas of New Belgrade and the old part of Belgrade, which, from geographic and geotectonic standpoints, represent the lowland areas of the Pannonian Plain (Pannonian Basin) and hilly areas of the Balkan Peninsula, respectively.On the left bank of the Sava River, in the Belgrade area, the thickness of Quaternary sediments is about 30 m
Data from the existing boreholes and water wells situated on the banks of the Sava River, and in the areas of Ada Ciganlija, New Belgrade and Zemun, it is concluded that, in addition to significant thickness, the Quaternary sediments are characterized by extensive spatial distribution
A more complete picture of stratigraphic characteristics of Quaternary sediments was attained using the data obtained from the boreholes RB47/P-1 and RB 53/P-1, which were bored along the left bank of the Sava River in 2016/17

Summary

Introduction

The Sava River separates the administrative areas of New Belgrade and the old part of Belgrade, which, from geographic and geotectonic standpoints, represent the lowland areas of the Pannonian Plain (Pannonian Basin) and hilly areas of the Balkan Peninsula, respectively. In the Sava River valley in Makiš, on Ada Ciganlija and along the lef bank of the river in New Belgrade, these deposits discordantly overlie the Miocene sediments of the Paratethys (mostly marls of Pannonian age), while in the area of Zemun, they lie over lacustrine deposits of Pliocene age (KNEŽEVIĆ et al, 1998; NENADIĆ, 1997, 2001, 2003; NENADIĆ et al, 2009, 2010, 2011, 2015, 2016) The age of these sediments cannot be precisely determined due to the lack of palaeontological evidence. The percentage of coarser material is larger around the river itself (investigated boreholes), especially on the right riverbank, and it decreases northwards, below the Srem loess Plateau in the direction of Zemun Polje and Batajnica (KNEŽEVIĆ et al, 1988; NENADIĆ, 2003; NENADIĆ et al, 2001, 2009, 2015, 2016) In these deposits in the wider area of southeastern Srem, two cycles of alluvial sedimentation are observed: the older cycle, in which sands and gravels predominate (polycyclic phase) and the younger cycle, made up primarily of silts (fluvial-palustrine deposits). Recent alluvial deposits are underlain by anthropogenic sands, whose thickness varies between 1.0 and 5.9 m (according to data from boreholes)

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