SEDIMENTOLOGICAL INVESTIGATIONS ON ST. GEORGE DISTRIBUTARY, DANUBE DELTA, ROMANIA

Pojar, I.; Ispas, B.; Dutu, L.; Briceag, A.; Dutu, F.
Abstract:
Taking into account the sedimentation features since the last 5 decades, considerable anthropic modifications on the Danube channel are present, as the debris composition varies concerning the proportion of terrigenous minerals, lithoclasts, bioclasts and organic matter. Since the 7th decade of the last century, marked by the construction of most hydrological power plants on the Danube, Olt, Jiu, Cerna and other major rivers, a significant change of the sedimentary volume brought downstream by the Danube is assumed. This study aims comparing new data obtained by in situ observations and laboratory analysis with older data describing volumes and sedimentary features last decades. Our evaluations regarding the superficial sediments sampled from the St. George cut-off channel and meanders reveal average percentages of 72.4% consisting of siliciclastic fraction (SIL), 17.5% belonging to total organic matter (TOM) and 10% carbonates (CAR). Therefore, the studied sediments were assigned to the mineral non-carbonate / low carbonate category, with low amount of shell and shell fragments and low carbonate minerals.
SGEM Research areas:
Year:
2021
Type of Publication:
In Proceedings
Keywords:
sedimentological conditions; bottom-sediments; organic matter; grain-size analysis; St. George Branch
Editor:
• Prof. DSc. Oleksandr Trofymchuk, UKRAINE • Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Volume:
21
SGEM Book title:
21st International Multidisciplinary Scientific GeoConference SGEM 2021
Book number:
1.1
SGEM Series:
SGEM International Multidisciplinary Scientific GeoConference
Pages:
99-106
Publisher address:
51 Al. Malinov blvd, Sofia, 1712, Bulgaria
SGEM supporters:
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
Period:
16 - 22 August, 2021
ISBN:
978-619-7603-20-0
ISSN:
1314-2704
Conference:
21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
DOI:
10.5593/sgem2021/1.1/s01.017
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