scholarly journals Heavy metals in the geological-ecological system of the bottom sediments of the continental slope of the Black sea

2018 ◽  
pp. 105-113
Author(s):  
V. YEMELIANOV ◽  
S. DOVBYSH ◽  
Y. NASEDKIN ◽  
K. TSYMBALIUK
Keyword(s):  
Heavy Metals ◽  
Continental Slope ◽  
Black Sea ◽  
Bottom Sediments ◽  
Ecological System ◽  
The Black Sea

Heavy metals in sinking particles and bottom sediments from the eastern Turkish coast of the Black Sea

2008 ◽  
Vol 78 (2) ◽  
pp. 396-402 ◽  
Author(s):  
H.A. Ergül ◽  
S. Topcuoğlu ◽  
E. Ölmez ◽  
Ç. Kırbaşoğlu
Keyword(s):  
Heavy Metals ◽  
Black Sea ◽  
Bottom Sediments ◽  
The Black Sea ◽  
Sinking Particles

ASSESSMENT OF TOXICITY AND POLLUTION OF BOTTOM SEDIMENTS IN THE NORTHWESTERN PART OF THE BLACK SEA WITH HEAVY METALS

2017 ◽  
Vol 22 (2(41)) ◽  
pp. 41-51
Author(s):  
С. Е. Дятлов ◽  
А. В Кошелев ◽  
С. А. Запорожец ◽  
Е. А. Лукьянова
Keyword(s):  
Heavy Metals ◽  
Black Sea ◽  
Bottom Sediments ◽  
The Black Sea ◽  
Northwestern Part

Specific features of the distribution of heavy metals in bottom sediments in the Northeast part of the Black Sea

2011 ◽  
Vol 21 (1) ◽  
pp. 63-73
Author(s):  
A. I. Ryabinin ◽  
S. A. Shibaeva ◽  
E. A. Danilova
Keyword(s):  
Heavy Metals ◽  
Black Sea ◽  
Bottom Sediments ◽  
The Black Sea

scholarly journals BIOGENIC SILICA SEDIMENTATION ON THE SHELF AND CONTINENTAL SLOPE OF THE BLACK SEA

2021 ◽  
pp. 79-89
Author(s):  
O.P. Olshtynska ◽  
G.M. Ivanova ◽  
I.I. Pustovoit
Keyword(s):  
Continental Slope ◽  
Black Sea ◽  
Bottom Sediments ◽  
Practical Importance ◽  
Water Area ◽  
The Black Sea ◽  
Formation Processes ◽  
Marine Geology ◽  
Wide Range ◽  
Material Input

Investigation of the marine sediments processes, regularities of their accumulation in the inland seas is one of the main tasks of marine geology and sedimentology. Biogenic sedimentation is extremely important in the general sediment deposition cycle in the Black Sea basin. This article provides an overview of the literature and analysis of our own research of the distribution of biogenic siliceous deposits in Holocene bottom sediments on the shelf and continental slope of the Black Sea. The composition and conditions of biosilicates formation, their relationship with coccolithic silts and sapropels in sedimentary strata, sources and forms of siliceous biogenic matter input, the dynamics of transformation of modern bottom sediments, as well as the influence of various environmental factors on the process of sedimentary accumulation of silica in the Black Sea basin in the late quarter are considered. The relevance of the topic is caused by insufficient coverage of a number of issues regarding the sources of mobilization and the nature of material input, the features of the origin and deposition of silicate biogenic matter in the basin, paleogeoecological factors that influenced on sedimentogenesis in the late Quarter. The study of the formation processes of modern bottom sediments in a wide range of facies conditions is of undoubted practical importance for diverse geological, sedimentological and facies research, both fundamental and applied, related to prospecting, exploration and exploitation of minerals, as well as for using the results obtained in the development of marine water area.

scholarly journals Heavy metals in the bottom sediments of the Tendrivska bay

2020 ◽  
Vol 16 (3) ◽  
pp. 53-63
Author(s):  
V.O. YEMELIANOV ◽  
Ye.I. NASEDKIN
Keyword(s):  
Heavy Metals ◽  
Particle Size ◽  
Black Sea ◽  
Bottom Sediments ◽  
Biosphere Reserve ◽  
Water Area ◽  
Coastal Sediments ◽  
Hydrodynamic Characteristics ◽  
The Black Sea ◽  
Water Supply Systems

The article describes several research results of geoecological direction, which included field sampling of bottom sediments, soils, coastal sediments at different sites within the territory of the Black Sea Biosphere Reserve NAS of Ukraine, in particular, the Tendrivska and Yahorlitska bays. The complex of the laboratory works included determination of chemical, microelement, particle size distribution composition of samples and study of their material characteristics on a scanning electron microscope. The study of the ecological state of the Reserve’s bottom sediments, as well as comparison of pollutant content in sediments of various parts of the protected water area was based, in particular, on determining the concentrations a few heavy metals (copper, nickel, zinc, lead, tin). The choice of research objects was determined by the peculiarities of the organization of agricultural activities within the arable lands bordering the boundaries of this reserve. The results obtained showed a significant impact of the geomorphological structure of the area and hydrodynamic characteristics of certain areas of the water area within it on the distribution of the material component of bottom sediments. The mineral and particle-size composition of bottom sediments should be considered the main factor in the uneven distribution of microelement concentrations, which in turn is determined by the location of zones of coastal erosion and sediment accumulation. Insignificant relative excesses of the copper content in the surface layer of the bottom sediments of the water area, fixed in the northern part of the Tendrivska Bay, can be connected with the discharge of fresh water from the network of canals, which is part of the agro complexes for rice cultivation, as well as “tailings” of water from the water supply systems of the Krasnoznam’yanska irrigation system. Studies have also shown that the content of most heavy metals in the upper layer of bottom sediments in the Black Sea Biosphere Reserve is lower than the average figures for modern Black Sea bottom sediments presented in literature sources.

scholarly journals On conditions of hyperhaline basins of the Taman’ coast of the Black Sea

2016 ◽  
Vol 1 (4) ◽  
pp. 40-43
Author(s):  
Zh. P. Selifonova ◽  
V. K. Chasovnikov
Keyword(s):  
Heavy Metals ◽  
Black Sea ◽  
Bottom Sediments ◽  
Maximum Allowable Concentration ◽  
Oil Products ◽  
The Black Sea ◽  
Guideline Values ◽  
First Time ◽  
Natural Territory

The researches of hydrochemistry of water and bottom sediments on pollutants and plankton in hypersalinic Solenoe Lake and Gor’kiy Liman were carried out for the first time. In July 2010 the waters of these basins were characterized by excess of maximum allowable concentration for heavy metals, phenols, biological consumption of oxygen, the bottom sediments — in excess of soil guideline values for heavy metals and oil products. The bloom by the euglenoid Eutreptia sp. was noted in Gor’kiy Liman. Using the parameters of density of the halophilic crustacean Artemia (from 35 to 126 thousand ind./m3, on average 72.7 thousand ind./m3) and of curative property of a brine (166–199 ‰), the ultrahalinic lake Solenoe can be assigned to the group of reservoirs having important regional value. This basin should be included in the specially-protected natural territory “Anapa Spit”.

Significance of Mineralogical and Lithologic-Petrographical Rank in the Ranking of Geological Information

2020 ◽  
Vol 42 (4) ◽  
pp. 33-49
Author(s):  
O.V. CHEPIZHKO ◽  
V.V. YANKO ◽  
V.M. KADURIN ◽  
I.M. NAUMKO ◽  
S.M. SHATALIN
Keyword(s):  
Fluid Flow ◽  
Black Sea ◽  
Bottom Sediments ◽  
Oil And Gas ◽  
Sedimentary Cover ◽  
Geochemical Characteristics ◽  
The Black Sea ◽  
Flow Parameters ◽  
Geochemical Parameters ◽  
Geological Information

For the first time the importance of mineralogical and lithological-petrographical ranks in the line of geological information ranks is substantiated for implementation of long-term forecasts, standard and non-standard approaches to research of physical and geochemical parameters as a basis of creation of complex system of forecast criteria and prospecting indicators of hydrocarbons within the sedimentary cover of Black sea based on the theory of global fluid-flows derivation. These criteria have different sensitivity to the object (hydrocarbon deposits) and are therefore ranked. The ranking determined the following parameters: 1) seismic data within the object, obtained by the method of deep seismic sounding, RWM SDP; 2) parameters of tectono-geodynamic structures; 3) the main characteristics of sedimentary cover and bedrock; 4) geochemical characteristics; 5) parameters of mineral complexes and fluid inclusions in mineral neoformations; 6) the value of the distribution of meiobenthos. Based on modern views of oil and gas geology, structural-tectonic and lithological-facies criteria are among the main ones. The study of the mineralogical component of sediments is made with using mineralogical, thermobarogeochemical and X-ray spectral methods. Fixation of anomalies of fluid flow at the bottom of the Black Sea as to the distribution of abiotic parameters in order to assess the prospects of oil and gas is determined by structural and tectonic features and high permeability of fluid flow; parameters of mineral complexes (minerals, facies) and genetic connections; heterogeneity of geochemical characteristics of bottom sediments; the presence of hydrocarbon inclusions in authigenic minerals of bottom sediments.

Anthropogenic Impact on the Lithodynamics of the Coastal Zone of the Southern and Western Black Sea Coast (Review)

2021 ◽  
Author(s):  
T. V. Efremova ◽  
Yu. N. Goryachkin ◽  
◽  
Keyword(s):  
Coastal Zone ◽  
Black Sea ◽  
Bottom Sediments ◽  
Anthropogenic Impact ◽  
River Flow ◽  
The Black Sea ◽  
Negative Consequences ◽  
Coastal Zones ◽  
Natural Dynamics ◽  
The Impact

Anthropogenic impact on lithodynamics of the coastal zone changes the natural dynamics of bottom sediments, which leads to increased abrasion and swelling of beaches, activation of landslide processes creating a threat of destruction of the coastal infrastructure. The article aims at providing an overview of the scientific literature on the anthropogenic impact on lithodynamics of the coastal zone of the southern and western coasts of the Black Sea (shores of Romania, Bulgaria and Turkey). The work shows that with all the differences in the natural conditions of the coastal zones of these countries the types of anthropogenic effects they undergo are almost the same. These include: hydrotechnical construction without regard to the impact on the neighbouring coast sections; reduction of solid river flow due to river regulation by reservoirs; construction of capital facilities directly on the beaches; illegal extraction of sand from beaches and river beds; dredging with sale of the extracted material to construction companies; covering of cliffs by various structures; destruction of coastal dunes, etc. The main negative consequences of these actions are reflected in disruption of natural dynamics and shortages of bottom sediments, changes in the coastline, reduced aesthetic attractiveness and accessibility of shores, destruction of coastal ecosystems. The article also provides information on the legislation of these countries regarding environmental management in the coastal zone

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