The Lithological Composition of the Bed Sediments Collected Along the Sf. Gheorghe Branch (km 85 - km 15) (Streams, Artificial Canals, Rectified Meanders, Including Lateral Channels and Lakes), Danube Delta, Romania

• Autorzy: Catianis Irina , Dutu Florin , Pavel Ana-Bianca , Borzan Ovidiu

Identyfikatory

DOI

10.29227/IM-2024-02-32

Warianty tytułu

PL

Skład litologiczny osadów dennych zebranych wzdłuż odnogi Sf. Gheorghe (km 85 – km 15) (strumienie, sztuczne kanały, prostowane meandry, w tym kanały boczne i jeziora), Delta Dunaju, Rumunia

• Konferencja: 9th World Multidisciplinary Congress on Civil Engineering, Architecture, and Urban Planning - WMCCAU 2024 : 2-6.09.2024
• Języki publikacji: EN

Abstrakty

EN

The Sf. Gheorghe distributary (the oldest branch of the Danube River) is subject to different hydro-sedimentary impacts due to the anthropogenic meander cut-off plans undertaken in the last decades for navigational purposes. This study aimed to determine the contents of the main lithological levels (i.e., organic matter – TOM%, carbonates – CAR% and siliciclastics – SIL%) in the bed sediments, using the LOI (Loss in Ignition) method. In this sense, a field sediment investigation has been conducted in 58 sampling sites located on the Sf. Gheorghe Arm (km 85 – km 15) (rivers, artificial channels, rectified meanders, including side channels and lakes), during May 2024. The distribution of the organic matter, carbonates and siliciclastics showed a significant spatial variability. The implemented analyses made it possible to distinguish mineral-rich sediments (>15-30%SIL) found especially in river sections, while organic-rich sediments (>15-30%TOM) were mainly identified in lakes. From these outcomes, it seems reasonable to conclude that the sediment deposition and accumulation are strongly influenced by the local hydrodynamic conditions (fluvial and lacustrine environments) which allow the accumulation of a mixture of different sediments. This study enables quantitative evidence related to the main lithological components of the bed sediments within the Sf. Gheorghe Arm (km 85 – km 15), and present a database for future sustainable ecosystem restoration and management measures, to protect and maintain wildlife habitat and biodiversity on the Danube Delta edifice.

Słowa kluczowe

EN

bed sediments; Danube River distributary; lithology; meander; organic matter

PL

osady denne; dopływ Dunaju; litologia; meander; materia organiczna

• Wydawca: Polskie Towarzystwo Przeróbki Kopalin
• Czasopismo: Inżynieria Mineralna
• Rocznik: 2024
• Tom: Vol. 1, no. 2
• Strony: art. no. 32
• Opis fizyczny: Bibliogr. 24 poz., tab., wykr., zdj.

Twórcy

autor

Catianis Irina

• National Research and Development Institute for Marine Geology and Geoecology, GeoEcoMar, Romania; 23-25 Dimitrie Onciul Street 024053, Bucharest, Romania

• https://orcid.org/0000-0001-8120-7369

autor

Dutu Florin

• National Research and Development Institute for Marine Geology and Geoecology, GeoEcoMar, Romania; 23-25 Dimitrie Onciul Street 024053, Bucharest, Romania

• https://orcid.org/0000-0002-5393-3125

autor

Pavel Ana-Bianca

• National Research and Development Institute for Marine Geology and Geoecology, GeoEcoMar, Romania; 23-25 Dimitrie Onciul Street 024053, Bucharest, Romania

• https://orcid.org/0000-0003-0518-1659

autor

Borzan Ovidiu

• National Research and Development Institute for Marine Geology and Geoecology, GeoEcoMar, Romania; 23-25 Dimitrie Onciul Street 024053, Bucharest, Romania

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki i promocja sportu (2025).