Slump structures in quaternary slope sediments of the northern Derbent Basin (Caspian Sea)

Verzhbitskii, V. E.; Лобковский, Л. И.; Roslyakov, A. G.; Merklin, L. R.; Polyakov, A. S.; Левченко, О. В.; Ковачев, С. А.; Зверев, А. С.; Гарагаш, И. А.; Mar, G. N.; Mutovkin, A. D.; Putans, V. A.; Libina, N. V.; Soltanovskii, I. I.; Slobodyan, V. Yu.; Gontarev, S. V.

doi:10.1134/s0001437009030126

Cited by 3 publications

(5 citation statements)

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“…The profiles show a good range of downslope features. According to previous research [10,11], uplifts in the upper part of the western slope of the Derbent Basin do not represent individual slump bodies moving along the seafloor; nevertheless, the internal structure of the Neopleistocene sequence in this area suggests the presence of numerous intraformational slump duplexes. In the steepest part of the slope, clear indications of the disintegration of bottom deposits and collapsing and slumping processes were revealed.…”

Section: Hydrological Settingsmentioning

confidence: 78%

“…These new seismic reflection data made it possible to reveal the structure of the upper sedimentary layer of the western slope of the Derbent Basin in greater detail. Areas with a chaotic pattern of the acoustic record are marked here, which are interpreted as a set of separate slump and landslide blocks [11]. They appear to have moved in the recent geologic past (Late Quaternary) down a relatively steep slope.…”

Section: Eastern Slopementioning

confidence: 87%

“…They appear to have moved in the recent geologic past (Late Quaternary) down a relatively steep slope. These landslide deformations and gravitational features were previously considered [10,11]; therefore, in this paper, we focus on the description of turbidite features and, mostly, contourite ones.…”

Section: Eastern Slopementioning

confidence: 99%

“…This fact should be considered in the designation of engineering structures within the petroliferous Yalama-Samur structure (Figure 18). This issue is especially important because of the substantial thickness (more than 200 m) deposits west of the studied area [10,11].…”

Section: Geohazardsmentioning

confidence: 99%

“…Thus, any pipeline construction will face issues, making it necessary to obtain more data regarding the current picture and the bottom relief. It should be noted that the gravitational folding and faulting on the northern slope of the Derbent Basin were most intense precisely in the Holocene [11].…”

Section: Geohazardsmentioning

confidence: 99%

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Contourite and Turbidite Features in the Middle Caspian Sea and Their Connection to Geohazards Derived from High-Resolution Seismic Data

Yutsis

Левченко

Putans

2022

JMSE

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High fluvial input combined with specific topographic and oceanographic settings in the Caspian Sea create favorable conditions for contourite deposition. For the first time in its middle portion, contourite deposits have been observed in high-resolution seismic profiles. Various types of contourite drifts and mixed depositional systems have been revealed on the lower slope and in the adjacent basin, some of which are accompanied by sediment wave fields. The deposition of contourites or turbidites and their lateral distribution is controlled by sea-floor topography and oceanographic processes, as well as the modern activity of gravity flows downslope on the western Caucasian slope and in the channel system on the Mangyshlak Sill. The contourite drifts and sediment wave fields form several contourite depositional systems, which seem to merge in the Caspian contourite depositional complex. This occurs near the foot of slopes of the Derbent Basin and is related to the counterclockwise circum-Caspian current in the Middle Caspian Sea. The fact that the Caspian Sea is the largest lake in the world makes this region a significant area for research into the “lake contourites” issue. The Caspian Sea is an important oil-producing area, and sedimentary processes related to the contourite and turbidite can be a source of potential geohazards in the construction and exploitation of underwater engineering structures

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Section: Hydrological Settingsmentioning

confidence: 78%

Section: Eastern Slopementioning

confidence: 87%

Section: Eastern Slopementioning

confidence: 99%

Section: Geohazardsmentioning

confidence: 99%

Section: Geohazardsmentioning

confidence: 99%

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