The northwestern Black Sea: climatic and sea-level changes in the Late Quaternary

Panin, Nicolae; Popescu, Irina

doi:10.1007/978-1-4020-5302-3_16

Cited by 24 publications

(38 citation statements)

References 13 publications

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“…Based on marine isotope stage (MIS) records (Chappell and Shackleton, 1986), these ages suggest that dune sands were deposited during the early phase of the marine isotope stage 5e period (MIS 5e) or transition stage from MIS 6 to MIS 5e, when accuracy values are considered. Considering sea-level changes occurring in the Black Sea before and during deposition of eolianite components, available data has attested an increasing trend in the Black Sea's hydrologic budget during the Karangatian transgression, coinciding with so-called Eemian (Mikulinian) interglacial which spanned 125 ka to 65 ka (Panin and Popescu, 2007), during which the sea-level was 6e8 m higher than the present (Federov, 1978;Chepalyga, 1984;Svitoch et al, 2000). This highstand, allowing a connection with the Mediterranean via the Bosphorus and Dardanelles, could be of great importance for the production of connective calcium carbonate cement in shallow shelf plains.…”

Section: Osl Ages and Implications For Late Pleistocene Sea-levelsmentioning

confidence: 96%

Age, composition and paleoenvironmental significance of a Late Pleistocene eolianite from the western Black Sea coast of Turkey

Ergi̇nal

Kıyak

Ekinci

et al. 2013

Quaternary International

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Section: Osl Ages and Implications For Late Pleistocene Sea-levelsmentioning

confidence: 96%

Age, composition and paleoenvironmental significance of a Late Pleistocene eolianite from the western Black Sea coast of Turkey

Ergi̇nal

Kıyak

Ekinci

et al. 2013

Quaternary International

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“…During this systematic exploration of the Black Sea shelf by Soviet and other eastern country researchers (Popp, 1969;Muratov et al, 1974;Shopov et al, 1986;Shimkus et al, 1987;Arkhipov et al, 1995;Evsylekov and Shimkus, 1995) paleo-incised valleys crossing the continental shelf were recognized. In the 1990's, the systematic survey of the Romanian shelf conducted by the GeoEcoMar Institute established the presence of ancient river valleys crossing the shelf and extensive down-cutting of the Danube (Viteaz) canyon Panin and Popescu, 2007;Lericolais et al, 2007a). This last observation leads us to propose the hypothesis of a major water-level drop of the Black Sea after the LGM and supports the interpretation made by Ostrovskiy et al (1977b) and Shimkus et al (1980) regarding the stratigraphy of Pleistocene marine terraces recognized on the shelf break off the Caucasus and KerchTaman region.…”

Section: Black Sea Paleo-shorelinesmentioning

confidence: 99%

High frequency sea level fluctuations recorded in the Black Sea since the LGM

Lericolais

Bulois

Gillet

et al. 2009

Global and Planetary Change

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This paper presents a 3D geometric interpretation of very high resolution seismic Chirp profiles acquired on the Romanian shelf during ASSEMBLAGE European Project. The results provide a solid record of the Black Sea Last Glacial Maximum (LGM) water level fluctuations. This pseudo-3D seismic interpretation shows that the Black Sea lacustrine shelf deposits form a significant basinward-prograding wedge system. On top of these prograding sequences is a set of sand dunes that delineates a wave cut-terrace like feature around the isobath −100 m. Landward of this dune field are small depressions containing barkhan-like bodies. The upper part of the last prograding sequence is incised by anastomosed channels which end in the Danube (Viteaz) canyon which are also built on the lacustrine prograding wedge. Ten stratigraphic units were distinguished and correlated with analyses of cores retrieved from this area. The results demonstrate that the first eight sequences represent lacustrine prograding wedges, the ninth sequence is the dune system itself and the tenth is a marine mud drape which covers the entire continental shelf. The lacustrine prograding wedges represent a lowstand deposit characterised by forced regression-like reflectors mapped from the pseudo-3D seismic data. Their hinge point corresponds to the wave erosion surface mapped around −100 m isobath on the multibeam mosaic. Dated cores give age control on this lowstand period, which lasted from 11 to 8.5 kyr 14 C BP as implied by: (1) the continuously dry climatic conditions in the region inferred by high percentages of herbs and steppe elements determined from ASSEMBLAGE cores and, (2) the formation of dunes between 10 and 8.5 kyr 14 C BP on the desiccated north-western Black Sea shelf at −100 m and (3) all of these covered by a marine mud drape confirming that the dune system is no longer active. The buried, anastomosed fluvial channels that suddenly disappear below 90 m depth, and a unique wave-cut terrace between 95 and 100 mbsl on the outer shelf are also consistent with a major lowstand base-level at around −100 m water depth. Preservation of sand dunes and the occurrence of small, buried incised valleys mark a rapid transgression within less than a century during which ravinement processes related to the water level rise had no time to significantly erode the seafloor.

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“…In a broad sense, marine transgressions occurred during the interglacials, whereas during the glacial periods, the basin became a flowthrough, brackish water body (Algan et al, 2007). During the Quaternary glaciations and delectation, the induced sea-level fluctuations endowed the restricted channels of the Bosphorus and Dardanelle with the power to control the Black Sea's connection to the Mediterranean Sea (Panin and Popescu, 2007). When global sea level dropped below the Bosphorus sill, the water level in the Black Sea varied according to regional conditions, independent of those in the World Ocean (Panin and Popescu, 2007).…”

Section: Quaternary Sea-level History Of the Black Seamentioning

confidence: 98%

“…Throughout geological time, the Black Sea experienced major sea-level changes, accompanied by environmental modifications, such as geomorphological reshaping (Panin and Popescu, 2007).…”

Section: Quaternary Sea-level History Of the Black Seamentioning

confidence: 99%

“…During the Quaternary glaciations and delectation, the induced sea-level fluctuations endowed the restricted channels of the Bosphorus and Dardanelle with the power to control the Black Sea's connection to the Mediterranean Sea (Panin and Popescu, 2007). When global sea level dropped below the Bosphorus sill, the water level in the Black Sea varied according to regional conditions, independent of those in the World Ocean (Panin and Popescu, 2007). One important consequence of these lowstands was the interruption of Mediterranean inflow to the Black Sea, which, lacking any saline contribution gradually became a giant brackish to freshwater lake (Panin and Popescu, 2007).…”

Section: Quaternary Sea-level History Of the Black Seamentioning

confidence: 99%

See 1 more Smart Citation

Coastal Uplift along the Eastern Black Sea Coast: New Marine Terrace Data from Eastern Pontides, Trabzon (Turkey) and a Review

Keskin

Pedoja

Bektaş

2011

Journal of Coastal Research

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International audienceAn emerged, Quaternary, marine terrace sequence has been investigated near Trabzon, Turkey, along a 20-km-long stretch of the coast of the southeastern Black Sea. The sequence includes seven principal marine terraces. The terraces are frequently compound and include up to three second-order marine terraces. The upper shoreline angles of the main terraces were found at the following maximum elevations above mean sea level: 3 ± 0.5 m (TH), 12 ± 3 m (T1), 36 ± 2 m (T2), 79 ± 9 m (T3), 120 ± 3 m (T4), 138 ± 10 m (T5), and 260 ± 25 m (T6). Fossil bivalves and gastropods from the TH, T1, T2, and T3 deposits have been dated by Electron Spin Resonance (ESR). The results show that the ages of the deposits from the TH, T1, T2, and T3 terraces are 5.141 ± 0.294 ka, 124.8 ± 26.0 ka, 292.5 ± 49.8 ka, and 407.998 ± 67.475 ka, respectively. Consequently, we correlate TH, T1, T2, and T3 to marine isotope stage (MIS) 1, 5e, 9, and 11, which correspond to 5, 123, 321, and 400 ka highstands, respectively. Estimated uplift rates deduced from the elevations of T1, T2, and T3 are 0.07 ± 0.05, 0.10 ± 0.02, 0.17 ± 0.03 mm/y or m/ka. These results show nonsteady, long-term uplift rates. Extrapolation of the oldest uplift rate (i.e., determined on the highest dated terrace) shows that in the region of Trabzon, Turkey, coastal, positive, vertical deformations are recorded at 2 Ma, which corresponds to the extrapolated age of the highest terrace in the sequence. Comparison with other sequences on the Black Sea coast reveals a rather weak uplift in this zone, which can be considered significative for the recent uplift of the Eastern Pontides

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The northwestern Black Sea: climatic and sea-level changes in the Late Quaternary

Cited by 24 publications

References 13 publications

Age, composition and paleoenvironmental significance of a Late Pleistocene eolianite from the western Black Sea coast of Turkey

Age, composition and paleoenvironmental significance of a Late Pleistocene eolianite from the western Black Sea coast of Turkey

High frequency sea level fluctuations recorded in the Black Sea since the LGM

Coastal Uplift along the Eastern Black Sea Coast: New Marine Terrace Data from Eastern Pontides, Trabzon (Turkey) and a Review

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