Organic carbon accumulation in the Holocene sapropel of the Black Sea

Geology ◽  
1998 ◽  
Vol 26 (2) ◽  
pp. 107 ◽  
Author(s):  
S. E. Calvert ◽  
R. E. Karlin
Keyword(s):  
Organic Carbon ◽  
Black Sea ◽  
Carbon Accumulation ◽  
The Black Sea ◽  
The Holocene

Varve calibrated records of carbonate and organic carbon accumulation over the last 2000 years in the Black Sea

1994 ◽  
Vol 8 (2) ◽  
pp. 195-217 ◽  
Author(s):  
Michael A. Arthur ◽  
Walter E. Dean ◽  
Eric D. Neff ◽  
Bernward J. Hay ◽  
John King ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Black Sea ◽  
Carbon Accumulation ◽  
The Black Sea

scholarly journals Organic Carbon and Particle-Size Distribution in the Littoral Bottom Sediments of the Laspi Bay (the Black Sea)

2020 ◽  
Vol 27 (3) ◽  
Author(s):  
N. A. Orekhova ◽  
E. I. Ovsyany ◽  
◽  
Keyword(s):  
Organic Carbon ◽  
Black Sea ◽  
Bottom Sediments ◽  
Carbon Accumulation ◽  
Shelf Zone ◽  
The Black Sea ◽  
Geochemical Background ◽  
Anthropogenic Pressure ◽  
Lateral Migration ◽  
Two Samples

Purpose. The work is aimed at estimating the organic carbon abundance in the bottom sediments of the littoral zone in connection with the state of macrozoobenthos in the Sevastopol region coastal waters with different levels of the anthropogenic pressure (by the example of the Laspi Bay). Methods and Results. The samples were taken in the dynamically active coastal-shelf zone (up to the depths ~ 20 m) of the Laspi Bay in September, 2017. Two samples were taken during the 103rd cruise of R/V "Professor Vodyanitsky" (September, 2018). The geochemical composition of bottom sediments was investigated. The bottom sediments of natural humidity were analyzed in accordance with the requirements of the regulatory documents. In the sediments containing the aleurite fraction in the central part of the Laspi Bay (station 4), the organic carbon content (Сorg) increased its natural course up to 0.46 %, but did not exceed its maximum values characteristic of the similar lithological sediments in the shallow-water part of the Crimea Southern Coast (1.14 %). In the deep part of the bay occupied with the aleurite-pelitic silt, the Сorg content exceeded 2 %. Absence of the Сorg accumulation within the depths under study is conditioned primarily by the grain-size composition of the bottom sediments, the hydrodynamic factor and the morphometric features of this coastal site. Presence of a small portion of the aleurite-pelitic fraction in the bottom sediments also does not promote the organic carbon accumulation. Thus, spatial distribution of the carbon organic and inorganic forms is conditioned by the features of the matters’ lateral migration, which, in its turn, is governed by dependence of the bottom sediments’ chemical and dispersion structure upon the environmental morphodynamic conditions. Conclusions. The littoral sediments were found to be characterized by a low organic content (Сorg = 0.16 %) not exceeding the geochemical background values of the surface bottom sediments in the Black Sea shelf zones. At present, the organic matter accumulation is determined by the features of the environmental morphodynamic conditions (transition of fine particles to the deep zones) and by the dispersed composition of the bottom sediments.

CORRELATION OF THE BLACK, MARMARA AND AEGEAN SEAS DURING THE HOLOCENE

2017 ◽  
Author(s):  
Nikolay Esin ◽  
Nikolay Esin ◽  
Vladimir Ocherednik ◽  
Vladimir Ocherednik
Keyword(s):  
Mathematical Model ◽  
Sea Level ◽  
Black Sea ◽  
Aegean Sea ◽  
The Black Sea ◽  
Sea Level Changes ◽  
The Holocene

A mathematical model describing the change in the Black Sea level depending on the Aegean Sea level changes is presented in the article. Calculations have shown that the level of the Black Sea has been repeating the course of the Aegean Sea level for the last at least 6,000 years. And the level of the Black Sea above the Aegean Sea level in the tens of centimeters for this period of time.

scholarly journals Level of relics in high-mountain flora of isolated Fisht-Oshten Massif and Chernomorskaya Chain

2019 ◽  
pp. 21-29
Author(s):  
I. N. Timukhin ◽  
B. S. Tuniyev
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
High Mountain ◽  
The West ◽  
The Caucasus ◽  
The Holocene ◽  
Alpine Species ◽  
High Level ◽  
First Time ◽  
Relic Species

For the first time the level of relics of the high-mountain flora of the northwestern edge of the highlands of the Caucasus has been established. The Fisht-Oshten Massif and the Black Sea Chain have a uniquely high level of relics - 51.0% (617 species), with a predominance of Tertiary-relic species - Rt - 41.2% (498 species). The second largest representation is a group of Holocene relics - Rx - 7.3% (88 species), the minimum represented Pleistocene relics - Rg - 2.5% (31 species). The relic level of alpine species is one of the highest in the Caucasus and is 52.8% (338 species). Alpine species also have predominance of Pliocene relics - 46.7% (299 species), the number of glacial relics is 2.5% (16 species), the share of xerothermic relics - 3.6% (23 species). In the preservation of relic species revealed general trends, depending on the remoteness of local flora from the main diaspora on the Fisht-Oshten Massif and the modern area of the meadow belt. These trends persist in Tertiary relics, while other patterns are observed for glacial and Holocene relics. The number of glacial relics fades to the west, most clearly it can be seen in alpine species. The number of Holocene relics as much as possible on the edge areas (Fisht-Oshten Massif and Mt. Semashkho) and minimally on the central peaks of the Black Sea Chain, where the Holocene expansion of xerophyte plants was insignificant.

Was the Black Sea Catastrophically Flooded during the Holocene?

2011 ◽  
pp. 245-262 ◽  
Author(s):  
Valentina Yanko-Hombach ◽  
Peta Mudie ◽  
Allan S. Gilbert
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
The Holocene

scholarly journals The catastrophic landslide on the Black Sea coast which destroyed the Roman town of Bisonе (south of Kavarna town)

2021 ◽  
Vol 82 (2) ◽  
pp. 3-25
Author(s):  
Dimcho Evstatiev ◽  
Yordan Evlogiev ◽  
Mariana Nedelcheva
Keyword(s):  
Sea Level ◽  
Black Sea ◽  
The Black Sea ◽  
Front Part ◽  
The Holocene ◽  
Black Sea Coast ◽  
Geological Conditions ◽  
Coastal Shelf ◽  
The Rich ◽  
Sea Coast

In the second half of the Ist century BC seismogenic landslide/rockfall tore off the front part of the Chirakman Cape in the western part of the Kavarna Bay. The rich quarters of the Roman city of Bisone slid down into the sea. According to data from underwater archaeology artifacts and walls of the settlement are found up to 80 m inside the sea. The paper considers the tectonic conditions, the geological-geomorphological structure of the landslide, the paleogeography of the coastal shelf during the Holocene and the hydrogeological and engineering geological conditions in the area. A reconstruction of the coastline and sea-level position during the catastrophic landslide has been developed. Stability analyses have been performed too.

scholarly journals Net removal of dissolved organic carbon in the anoxic waters of the Black Sea

2016 ◽  
Vol 183 ◽  
pp. 13-24 ◽  
Author(s):  
Andrew R. Margolin ◽  
Loes J.A. Gerringa ◽  
Dennis A. Hansell ◽  
Micha J.A. Rijkenberg
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Black Sea ◽  
The Black Sea ◽  
Anoxic Waters
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