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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Asia
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Central Asia
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Kazakhstan
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Karachaganak Field (1)
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Tengiz Field (1)
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Middle East
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Turkey
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Pontic Mountains (1)
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Patom Plateau (1)
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Siberian Platform
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Angara-Lena Basin (1)
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Vilyuy Syneclise (1)
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Tunguska Basin (1)
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Caspian Basin (1)
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Commonwealth of Independent States
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Dnieper Basin (3)
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Kazakhstan
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Karachaganak Field (1)
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Tengiz Field (1)
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Pripet Basin (1)
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Russian Federation
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Patom Plateau (1)
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Siberian Platform
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Angara-Lena Basin (1)
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Vilyuy Syneclise (1)
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Timan-Pechora region (1)
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Tunguska Basin (1)
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Volga-Ural region (1)
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Europe
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Dnieper Basin (3)
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Pripet Basin (1)
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Timan-Pechora region (1)
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Mediterranean Sea
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East Mediterranean
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Russian Platform (1)
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commodities
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oil and gas fields (1)
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petroleum
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natural gas (1)
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geologic age
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Cenozoic
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Quaternary
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Mesozoic
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Jurassic (1)
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Paleozoic (1)
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Primary terms
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Asia
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Central Asia
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Kazakhstan
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Karachaganak Field (1)
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Tengiz Field (1)
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-
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Middle East
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Turkey
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Pontic Mountains (1)
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-
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Patom Plateau (1)
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Siberian Platform
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Angara-Lena Basin (1)
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Vilyuy Syneclise (1)
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Tunguska Basin (1)
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Cenozoic
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Quaternary
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Holocene (1)
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upper Pleistocene (1)
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continental shelf (1)
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faults (1)
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Mediterranean Sea
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East Mediterranean
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Black Sea (1)
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Jurassic (1)
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Triassic (1)
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oil and gas fields (1)
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paleogeography (1)
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petroleum
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reefs (1)
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sea-level changes (1)
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sediments
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sedimentary rocks
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sedimentary rocks
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carbonate rocks (1)
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sedimentary structures
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sedimentary structures
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biogenic structures
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bioherms (1)
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sediments
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sediments
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marine sediments (1)
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Dnieper Basin
Paleogeography of the Pontic Lowland and northwestern Black Sea shelf for the past 25 k.y.
Analyses of marine sediment lithology, paleorelief, and depositional environments on the northwestern Black Sea shelf were used for paleogeographic reconstructions reflecting the time periods of 30–25 ka, 15.5–15 ka, 11–10 ka, 9 ka, and 4 ka. The landscape of 25 ka, when sea level was 87 m below present, consisted of three geomorphic elements: (1) a denudation plain incised by numerous rivers and uniformly dipping southward, (2) a late Pleistocene alluvial terrace plain, within which the valleys of the Dnieper, Dniester, and Danube formed a common alluvial plain, and (3) a low coastal delta plain. The subsequent sea-level rise of the Neoeuxinian sea-lake to −55 m (15.5–15 ka) and −37 m (11–10 ka) resulted in the flooding of deltaic lowlands and a large portion of the alluvial terrace plain containing the deeply embayed Dniester and Dnieper limans. After the Drevnechernomorian transgressive phase at 9 ka, the sea flooded almost the entire late Pleistocene alluvial terrace plain, and the Dniester and Dnieper limans were converted to open marine embayments. Through Kalamitian time (4 ka), the entire Chilia section of the Danube delta was flooded. A large tract of land existed in the region of the Tendra Spit and Odessa bank. Around 25 ka, forest landscapes were common for the highlands and valley slopes of rivers and gullies. A steppe zone occupied the alluvial plain, which dominated the landscape to the south. This study demonstrates that paleogeographic reconstructions may serve as a basis for (1) locating submerged ancient settlements and (2) constraining possible migration routes.