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Geochronological investigation of the Danube Djerdap Lake sediments (Serbia): sedimentology and inorganic composition

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2019
Authors
Kašanin-Grubin, Milica
Hagemann, Lukas
Gajica, Gordana
Štrbac, Snežana
Jovančićević, Branimir
Vasić, Nebojša
Šajnović, Aleksandra
Đogo Mračević, Svetlana
Schwarzbauer, Jan
Article (Published version)
,
Springer
Metadata
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Abstract
The objective of this study is geochronological investigation of sedimentological and inorganic composition, in the Danube Djerdap Lake sediments in order to obtain reliable information about former pollution. Eleven samples were taken from the 135-cm-deep sediment core drilled at the Orlova location. Since the core represents sediments deposited during 1972–2016, the sedimentation rate of ~ 3 cm year−1 was estimated. Grain size, mineralogical and geochemical composition was determined. Sediments are sandy silts and clayey silts, and only the deepest and shallowest layers contain > 30% of sand-size fraction. The highest concentrations of minor elements are found in the oldest sediment (1972–1977) as a consequence of the high flux of the material from variable sources. During the sedimentation period (1975–1990), the concentrations of analyzed elements are generally decreasing until the beginning of 1990s. After this period, there are two distinct decreases and two distinct increases in... concentrations of elements. The fluctuations in minor element concentrations are a consequence of both natural and anthropogenic sources. Granitic rocks situated south are source of minerals that carry minor elements. Enrichment Factor, Geoaccumulation Index, Contamination Factor and Pollution Load Index indicate that concentrations of certain minor elements at specific depositional periods have anthropogenic source.

Keywords:
Danube Djerdap Lake / Geochronological investigation / Minor elements / Pollution indices
Source:
Environmental Geochemistry and Health, 2019
Publisher:
  • Springer Science and Business Media LLC
Projects:
  • Geochemical investigations of sedimentary rocks - fossil fuels and environmental pollutants (RS-176006)
  • Petrogenesis and mineral resources of the carpatho-balkanides and their importance in environmental protection (RS-176019)
  • Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden (RS-43009)

DOI: 10.1007/s10653-019-00403-6

ISSN: 0269-4042; 1573-2983

WoS: 000515328200025

Scopus: 2-s2.0-85071416968
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/3374
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