Results 251 to 260 of about 6,228 (276)

Submarine Fans and Their Channels, Levees, and Lobes

2017
Submarine fans are complex morphological features that develop on the continental slope, rise and abyssal plain, normally at the mouths of submarine canyons. They are constructed principally from the deposits of sediment gravity flows (mainly turbidity currents and debris flows) as terrigenous and shallow marine sediment is redistributed into deeper ...
Mark E. Deptuck, Zoltán Sylvester
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Precession‐punctuated growth of a late Miocene submarine‐fan lobe on Gavdos (Greece)

Terra Nova, 1993
Sedimentary cycles in an upper Miocene succession of hemipelagic sediments (marls) and laminites (sapropels) were deposited in an outerarc basin and are related to the astronomical cycles of precession and eccentricity. Individual marl‐laminite couplets correspond with the cycle of precession which has a periodicity of about 22 kyr.
G. Postma, F. J. Hilgen, W. J. Zachariasse   +2 more
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Intrinsic controls on the range of volumes, morphologies, and dimensions of submarine lobes

Sedimentary Geology, 2010
Submarine lobe dimensions from six different systems are compared: 1) the exhumed Permian Fan 3 lobe complex of the Tanqua Karoo, South Africa; 2) the modern Amazon fan channel-mouth lobe complex, offshore Brazil; 3) a portion of the modern distal Zaïre fan, offshore Angola/Congo; 4) a Pleistocene fan of the Kutai basin, subsurface offshore Indonesia ...
Prélat A, Covault JA, Hodgson DM, Fildani A, Flint SS   +4 more
openaire   +3 more sources

Sedimentary architecture of submarine lobes affected by bottom currents: Insights from the Rovuma Basin offshore East Africa

Basin Research, 2023
Abstract The influence of bottom currents on submarine channels has been widely recognized, for instance, by the formation of asymmetric channel‐levee systems and drifts. In contrast, it is often considered that submarine lobes can be only reworked by strong bottom currents and are not affected by bottom currents during their ...
Mei Chen, Shenghe Wu, Ruifeng Wang, Jiajia Zhang, Pengfei Xie, Min Wang, Xiaofeng Wang, Qicong Xiong, Jitao Yu, Elda Miramontes   +9 more
openaire   +1 more source

The full range of turbidite bed thickness patterns in submarine lobes: controls and implications

Journal of the Geological Society, 2013
A widely misused criterion to interpret lobe deposits in submarine fan systems at outcrop, and in core and well logs, is a thickening and/or coarsening upward profile. Lobe deposits from the Laingsburg depocentre, SW Karoo Basin, demonstrate that a full range of bed thickness patterns exists within lobes.
Amandine Prélat, David M. Hodgson
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Sandy submarine canyon-mouth lobes on the western margin of Corsica and Sardinia, Mediterranean Sea

Marine Geology, 2002
Long-range, low-resolution and deep-towed, high-resolution side-scan sonar records, high-resolution seismic profiles and core samples were used to study the relatively small canyon fed turbidite systems west of Corsica and Sardinia. The margin west of Corsica is dissected by deep (up to 1500 m), straight canyons that have steep axial gradients (10 ...
Kenyon, Neil H., Klaucke, Ingo, Millington, John, Ivanov, Michael K.   +3 more
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Anatomy of a gas-bearing submarine channel-lobe system on a topographically complex slope (offshore Nile Delta, Egypt)

Marine Geology, 2021
Abstract The characterization and predictability of submarine channel-lobe systems on topographically complex slopes have proven challenging, due to the complex responses of such systems to interacting flows and seafloor topography, in terms of their temporal evolution and spatial changes in morphology and architecture.
Pan Li, Ben Kneller, Larissa Hansen
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Laterally contiguous, concave-up basal shear surfaces of submarine landslide deposits (Miocene), southern Cyprus: differential movement of sub-blocks within a single submarine landslide lobe

Geosciences Journal, 2007
Detailed analysis of submarine landslide deposits from extensive outcrops of a Miocene slope succession (southern Cyprus) reveals significant information on basal shear surfaces of the slides. The deposits, 3–25 m thick, occur as lobate beds in transverse section at two stratigraphic horizons. Each slide lobe shows a series of adjacent concave-up basal
Lee, S.H., Stow, D.A.V.
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Flow-Deposit Interaction in Submarine Lobes: Insights from Outcrop Observations and Realizations of a Process-Based Numerical Model

Journal of Sedimentary Research, 2010
Sediment gravity flows have a propensity to infill lows and build depositional relief, which influences subsequent flows. This flow-deposit interaction is intrinsic to the evolution of submarine fans at a range of scales. A novel approach is presented that assesses the interaction of turbidity currents with a subtle but evolving depositional topography.
Groenenberg, Remco M., Hodgson, David M., Prélat, Amandine, Luthi, Stefan M., Flint, Stephen S.   +4 more
openaire   +2 more sources

Outcrop characterization of a submarine channel-lobe complex: The Lower Mount Messenger Formation, Taranaki Basin, New Zealand

Marine and Petroleum Geology, 2016
Abstract The Upper Miocene Lower Mount Messenger Formation (LMMF) exposed in cliffs along the west coast of the North Island, New Zealand, includes 650 m of thick-bedded, fine-to very fine-grained sandstone, interbedded sandstone and mudstone, mudstone, and mass transport deposits.
Larisa U. Masalimova, Donald R. Lowe, Glenn R. Sharman, Peter R. King, Malcolm J. Arnot   +4 more
openaire   +1 more source