Results 1 to 10 of about 88 (87)

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

open access: yesJournal of Marine Science and Engineering, 2022
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
Vsevolod Yutsis   +2 more
doaj   +1 more source

Carbonate contourite drifts in the southwest South China Sea: Sedimentary, paleoceanographic and economic implications

open access: yesFrontiers in Marine Science, 2022
Contourite drifts are significant sedimentary features and provide clues for the reconstruction of paleoceanography and paleoenvironment. Although they have been increasingly identified in the world’s ocean, shallow-water contourite drifts (< 300 m ...
Shan Liu   +8 more
doaj   +1 more source

Sedimentary processes in the bottom boundary layer of a contourite drift in the northern South China Sea

open access: yesFrontiers in Marine Science, 2023
Ocean dynamic processes in the bottom boundary layer (BBL) are crucial for sedimentation, such as deposition and resuspension of marine sediments. In this study, we conducted in-situ tripod observations of the sediment ridge of a contourite drift in the ...
Longwei Wu   +4 more
doaj   +1 more source

Hunting paleoceanographic archives of ice sheet-ocean interaction in the northwestern Ross Sea, Antarctica

open access: yesFrontiers in Earth Science, 2023
The analysis of sedimentary deposits influenced by bottom currents in glaciated continental margins provides crucial insights into paleo-depositional and oceanographic conditions.
Sookwan Kim   +15 more
doaj   +1 more source

IODP Expedition 339 in the Gulf of Cadiz and off West Iberia: decoding the environmental significance of the Mediterranean outflow water and its global influence [PDF]

open access: yesScientific Drilling, 2013
IODP Expedition 339 drilled five sites in the Gulf of Cadiz and two off the west Iberian margin (November 2011 to January 2012), and recovered 5.5 km of sediment cores with an average recovery of 86.4%.
F. J. Hernández-Molina   +3 more
doaj   +1 more source

Bottom Current Modification of Turbidite Lobe Complexes

open access: yesFrontiers in Earth Science, 2022
Submarine lobes form at the distal end of sediment gravity flow systems and are globally important sinks for sediment, anthropogenic pollutants and organic carbon, as well as forming hydrocarbon and CO2 reservoirs.
A. Fuhrmann   +4 more
doaj   +1 more source

Unveiling the contourite depositional system in the Vema Fracture Zone (Central Atlantic)

open access: yesScientific Reports, 2023
A combination of a high sediment input and intense bottom currents often leads to the formation of contourites (sediments deposited or significantly reworked by bottom currents). Both of these components are present in the Vema Fracture Zone valley which
Dmitrii G. Borisov   +6 more
doaj   +1 more source

Neodymium Isotopes in Glauconite for Palaeoceanographic Reconstructions at Continental Margins: A Preliminary Investigation From Demerara Rise

open access: yesFrontiers in Earth Science, 2021
Contourite sediment accumulations at continental margins are related to strong bottom water circulation, where intense winnowing can result in neoformation of authigenic grains of glauconite at the seafloor.
Pierre Giresse   +3 more
doaj   +1 more source

Lateral migration of large sedimentary bodies in a deep-marine system offshore of Argentina

open access: yesScientific Reports, 2021
Contourite features are increasingly identified in seismic data, but the mechanisms controlling their evolution remain poorly understood. Using 2D multichannel reflection seismic and well data, this study describes large Oligocene- to middle Miocene-aged
Adam Kirby   +2 more
doaj   +1 more source

Glacial-interglacial changes in oceanic conditions and depositional process in the continental rise in response to ice sheet (shelf) variation in Bellingshausen Sea, Antarctica

open access: yesFrontiers in Marine Science, 2023
Antarctic continental margin sediments are eroded from the shelf and transported to the slope/rise in association with changing ice sheet configuration.
Sunghan Kim   +9 more
doaj   +1 more source

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