The Distribution of Elements in the Vertical Section of Bottom Sediments in the Black Sea

The microelement composition of the vertical section of bottom sediments in the Black Sea has been studied. The analysis of the calculated enrichment factors relative to the mean composition of the Earth’s crust has shown that the lithogenic source dominates for most microelements. We revealed a sig...

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Bibliographic Details
Published inMoscow University geology bulletin Vol. 75; no. 2; pp. 168 - 176
Main Authors Nemchenko, E. I., Lipatnikova, O. A., Demina, L. L., Kravchishina, M. D., Lubkova, T. N.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.03.2020
Springer Nature B.V
Subjects
Bioaccumulation
Bottom sediments
Bottom water
Composition
Earth and Environmental Science
Earth Sciences
Geology
Hydrogen sulfide
Hydrogen sulphide
Iron
Manganese
Mud volcanoes
Oxidation
Oxidation-reduction potential
Ratios
Sediment
Sediments
Sulphides
Transport
Volcanoes
Black Sea
enrichment factors
microelements
bottom sediments
indicator ratios
Black Sea
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Summary:The microelement composition of the vertical section of bottom sediments in the Black Sea has been studied. The analysis of the calculated enrichment factors relative to the mean composition of the Earth’s crust has shown that the lithogenic source dominates for most microelements. We revealed a significant enrichment with Ca and Sr (due to bioaccumulation) and with S, As, and Mo (as a result of hydrogen sulfide contamination and the effect of mud volcanoes). The calculated indicator ratios of elements allow evaluation of the presence of exhalation components in sediments (Fe + Mn/Ti) and of the transportation distance of terrigenous material (Ti/Zr). Paleoreconstruction of salinity (C org /S) and oxidation-reduction conditions in the bottom water layer (Mn/Fe, Mo/Mn, V/(V + Ni), and V/Mn) was performed.
ISSN:0145-8752
1934-8436
DOI:10.3103/S0145875220020064