Seismic responses and controlling factors of Miocene deepwater gravity-flow deposits in Block A, Lower Congo Basin

Wang, Linlin; Wang, Zhenqi; Yu, Shui; Ngia, Ngong Roger

doi:10.1016/j.jafrearsci.2016.04.015

Cited by 9 publications

(2 citation statements)

References 39 publications

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“…The channel-fill seismic facies are believed to represent coarse sediments deposited by turbidity currents confined within the channels. Similar coarse deposits from turbidity currents within channels have been observed in other deep-water settings using drill-well data, e.g., Gulf of Mexico (Dixon and Weimer, 1998;Prather et al, 1998), and Congo basin (Wang et al, 2016).…”

Section: Interpretation Of Seismic Faciessupporting

confidence: 79%

Re-channelization of turbidity currents in South China Sea abyssal plain due to seamounts and ridges

et al. 2021

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Section: Interpretation Of Seismic Faciessupporting

confidence: 79%

Re-channelization of turbidity currents in South China Sea abyssal plain due to seamounts and ridges

et al. 2021

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“…Accordingly, the evolution of the different channel types can be explained by sea level fluctuations. During regressions, turbidity currents in the deep basin are dominated by higher density flows due to increased sediment supply (sediment load > energy of the flow), lower hydraulic pressures and abundance in coarser grain size sediments (Catuneanu, 2006;Wang et al, 2016). Submarine channels during lowstands are highly erosive, display lower sinuosity patterns, and comprise a higher sand/mud ratio (e.g., Shanley and McCabe, 1994;Tripsanas et al, 2006), which are represented by the V-shaped Type-1 channels (Fig.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Seismic geomorphology of submarine channel-belt complexes in the Pliocene of the Levant Basin, offshore central Israel

et al. 2018

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In this study, analyses of a high-resolution, three-dimensional seismic reflection dataset and well-log data were combined to characterise a distinct Pliocene interval in the Levant Basin offshore central Israel. This succession is characterised by moderate to high-amplitude, discontinuous to continuous seismic reflections between a mass transport deposit above and an undeformed basin series below. The studied interval contains two separate channelised subunits. Morphologically, the channels trend in a north to northwest direction, are incised <50 m, are ~50 m to 350 m wide and increase in number from base to top. A vertical variation in channel morphology style and stratigraphic organization is identified. The lower part of each subunit is dominated by coarser grained, narrow V-shaped channels (average width <120 m and low sinuosity, <1.06). In contrast, the upper part of each subunit is predominantly finegrained and U-shaped with relatively wide channels (average width >230 m and higher sinuosity, >1.1). The mechanisms that control the interplay between sedimentary processes and channel evolution show a cyclic pattern. Due to the cyclic occurrence of different channel types and the estimated age of the studied interval, formation and evolutionary processes of the submarine channels in the study area are likely to be controlled by relative sea level fluctuations and increased Nile River sediment supply, which is associated with rapid uplift of the Ethiopian plateau and increased African Monsoon rainfall during the Pliocene.

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Characterization of fossils and typomorphic minerals and its implications for source rocks in the Lower Congo Basin

Yang

Shi

et al. 2020

Arab J Geosci

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Seismic responses and controlling factors of Miocene deepwater gravity-flow deposits in Block A, Lower Congo Basin

Cited by 9 publications

References 39 publications

Re-channelization of turbidity currents in South China Sea abyssal plain due to seamounts and ridges

Re-channelization of turbidity currents in South China Sea abyssal plain due to seamounts and ridges

Seismic geomorphology of submarine channel-belt complexes in the Pliocene of the Levant Basin, offshore central Israel

Characterization of fossils and typomorphic minerals and its implications for source rocks in the Lower Congo Basin

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