scholarly journals In search of marine terraces from Central Dobrogea (Casimcea Plateau, Western Black Sea). Preliminary inquires on distribution, extension and vertical crustal movements

2020 ◽  
Vol 22 (1) ◽  
pp. 87-97
Author(s):  
Alexandru BERBECARIU ◽  
Alfred VESPREMEANU-STROE
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Altitude Range ◽  
Crustal Movements ◽  
Paleoenvironmental Changes ◽  
Marine Terraces ◽  
Elevation Difference ◽  
Study Sites ◽  
Vertical Crustal Movements ◽  
Northern Sector

Casimcea Plateau is an uplifted (exhumated) peneplain cut in Proterozoic green–schists and one of the oldest tec­tonic units around the Black Sea. Despite its overall monotonous physiognomy, the plateau is crossed by Casimcea Valley and presents a seaward façade to the east which preserves (sub)horizontal surfaces as testimonies of the paleoenvironmental changes (sea level and climate). This research aims to identify the marine and fluvio–marine terraces and to define their vertical distribution based on the morphometric analysis of two study sites (north – Ceamurlia; south – Tașaul Lake) using EU-DEM. 6 levels were identified as possible marine terraces within the 2–50 m altitude range and also some inferences were made concerning the age of the lower three levels. Also, the present work highlights a differential (stronger) uplift of the northern sector between Peceneaga – Camena and Ostrov – Sinoe faults reflected by both the elevation difference of 5–6 m between the terraces staircases identified at the two sites and by the elevation gaps analysed on an array of cross-fault transects carried on over Ostrov – Sinoe fault.  

Climatostratigraphic Scheme of the Black Sea Pleistocene and its Correlation with the Oxygen-Isotope Scale and Glacial Events

1988 ◽  
Vol 29 (1) ◽  
pp. 1-24 ◽  
Author(s):  
V.A. Zubakov
Keyword(s):  
Black Sea ◽  
Saline Water ◽  
Magnetic Polarity ◽  
The Black Sea ◽  
The Caspian Sea ◽  
Black Sea Region ◽  
Marine Terraces ◽  
Molluscan Fauna ◽  
New Evidence ◽  
A New Species

New evidence from the Asov Sea-Black Sea region shows that after the Cobb Mountain magnetic event (1.1 myr) there were 8 saline water events, with Mediterranean molluscs penetrating into the Asov Sea (five times farther than the western Manych Strait), and 7 or 10 cold freshwater events. During the freshening phase, the Caspian Sea molluscan fauna penetrated into the Black Sea; each time the Caspian mollusc assemblage was characterized by a new species of Didacna. Thus, some 18–20 bioclimatostratigraphic units can be distinguished in the Asov Sea-Black Sea section for the last 1 myr. Their numerical age is estimated by some dozen thermoluminescence dates and 12 magnetic-polarity datum planes. The Karangatian s. lato corresponds to the interval 300,000–50,000 yr, the Uzunlarian to 580,000–300,000 yr, and the Chaudian to 1,100,000–600,000 yr. The Karangatian and Tyrrhenian marine terraces correspond to marine isotope stages 5 and 7, the Uzunlarian and Milazzian to stages 11–15, and the Chaudian and Sicilian to stages 16–28. The number and ages of glacial-interglacial cycles in continental Europe are identical to the climatic cycles in the Black Sea and Mediterranean.

scholarly journals Holocene biostratigraphy and paleoenvironmental changes in the Black Sea based on calcareous nannoplankton

2007 ◽  
Vol 63 (1-2) ◽  
pp. 91-110 ◽  
Author(s):  
Simona Giunta ◽  
Caterina Morigi ◽  
Alessandra Negri ◽  
Francois Guichard ◽  
Gilles Lericolais
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Calcareous Nannoplankton ◽  
Paleoenvironmental Changes

MÖSSBAUER AND CHEMICAL ANALYSES OF SOME SEDIMENTS FROM THE ROMANIAN SHORE OF THE BLACK SEA

1979 ◽  
Vol 40 (C2) ◽  
pp. C2-445-C2-448
Author(s):  
D. Barb ◽  
L. Diamandescu ◽  
M. Morariu ◽  
I. I. Georgescu
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Chemical Analyses

Modeling of ecological conditions in the Euxine Basin in the Sarmatian and Maeotian by methods of diatom analysis

2019 ◽  
pp. 257-261
Author(s):  
Eleonora P. Radionova
Keyword(s):  
Black Sea ◽  
Late Miocene ◽  
The Black Sea ◽  
Subtidal Zone ◽  
Diatom Analysis ◽  
Diatom Flora ◽  
North West ◽  
Ecological Conditions ◽  
The North

The associations and ecological conditions of the existence of modern diatoms of the North-West (Pridneprovsky), Prikerchensky and Eastern regions of the subtidal zone of the Black Sea are considered. Based on the unity of the composition of the Present and Sarmatian-Meotian diatom flora, an attempt has been made to model some of the ecological c situation of the Late Miocene Euxinian basin.

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