Canyon-confined pockmarks on the western Niger Delta slope

Benjamin, Uzochukwu Kingsley; Huuse, Mads; Hodgetts, David

doi:10.1016/j.jafrearsci.2015.03.019

Cited by 25 publications

(15 citation statements)

References 56 publications

(72 reference statements)

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“…The 4.9 Ma we propose for this erosional surface (horizon A in Fig. 10B, C), disagrees with the late Miocene proposed by Benjamin et al (2015), who lacked biostratigraphic control. The occurrence of the A horizon just above the hemipelagic drape dated at 5.5 Ma, its erosional character (Fig.…”

Section: Sequence Stratigraphic Interpretation Of Msucontrasting

confidence: 98%

“…This hemipelagic drape (horizon P), like horizon M at the lower part of MSU 1, was inferred to have been deposited during an overall high relative-sea level (see Chima et al, 2019 and references therein). The assigned age (0.8-1.0 Ma) agrees with that attributed by Benjamin et al (2015), who suggested that this conformable seismic surface belonged to the middle Pleistocene. The repetitive motifs consisting of vertically stacked erosional submarine channels, infilled with aggrading/meandering channel levee complexes (CLCs) and MTDs (slides/slumps?…”

Section: Sequence Stratigraphic Interpretation Of Msusupporting

confidence: 89%

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Pliocene and Pleistocene stratigraphic evolution of the western Niger Delta intraslope basins: A record of glacio-eustatic sea-level and basin tectonic forcings

Chima

Gorini

Rabineau

et al. 2020

Global and Planetary Change

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Although climate proxy (δ 18 O) across the world ocean basins reveals that orbital forcing significantly controlled the Pliocene and the Pleistocene sediment deposition, and has been demonstrated in seismic and outcrop studies on the continental shelves of many margins, few or no seismic stratigraphic studies have investigated orbital forcing on deep-water sediment records.In this study, we combined detailed seismic stratigraphy and 3D geomorphological analysis of a high-resolution 3D seismic block in a detailed study of the stratigraphic evolution of the western Niger Delta intraslope basins over the last 5.5 Ma. Two mega seismic units named MSU 1 and MSU 2 were identified.

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Section: Sequence Stratigraphic Interpretation Of Msucontrasting

confidence: 98%

Section: Sequence Stratigraphic Interpretation Of Msusupporting

confidence: 89%

Pliocene and Pleistocene stratigraphic evolution of the western Niger Delta intraslope basins: A record of glacio-eustatic sea-level and basin tectonic forcings

Chima

Gorini

Rabineau

et al. 2020

Global and Planetary Change

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“…Several hydrocarbons studies were developed to rescue marine resources or something relating to an economic benefit (Benjamin et al, 2015;Isola et al, 2020). There has been an increase in the number of studies focused on hydrocarbon potential.…”

Section: Depositional Systemsmentioning

confidence: 99%

The South American Advances in Submarine Canyons Studies and Their Link to the Ocean Decade

Silva¹,

Araújo²

2021

Front. Mar. Sci.

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Submarine canyons have a relevant role in marine ecosystems. They are responsible for oceanographic conditions such as variability of temperature and salinity, sediment transport, nutrients, and even pollutants amongst marine areas. Submarine canyon studies have been growing and reaching prominence due to their importance in the Blue Economy. Initiatives to promote sustainable development for the ocean have been discussed in the Ocean Decade. Although canyons studies are increasing, how can we integrate these with the Ocean Decade outcomes? Thus, we aim to demonstrate an overview of the advances of submarine canyons studies and their link to the Ocean Decade for South America. We analyzed 160 studies divided into spatiotemporal analysis and study approaches according to the Ocean Decade outcomes. We discuss these articles, building a timeline and argumentative topics considering the advances, and discuss gaps to predict the future of submarine canyons studies in the Ocean Decade and Blue Economy context.

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“…Pockmarks are common, both in shallow and deep water, in deltas, estuaries, and even in some lakes [77]. The occurrence of pockmarks is an indication of shallow fluid flow activity, which constitutes a potential geohazard to hydrocarbon exploration and production activities [7,9,12]. According to [13], the presence of pockmarks should be taken into consideration when installing the anchors of drilling vessels and offshore platforms because pockmarks may indicate the presence of gas and may contain hard carbonate skins.…”

Section: Fluids Seepagementioning

confidence: 99%

“…Others generally do not cause direct damage to societies but can affect engineered structures. These include pockmarks, mud volcanoes, and mobile bedforms [6][7][8][9][10][11][12][13]. Some manifest themselves on the surface of the seafloor, while others are concerned with processes that occur in the subsurface.…”

Section: Introductionmentioning

confidence: 99%

Marine Geohazards: A Bibliometric-Based Review

et al. 2019

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Marine geohazard research has developed during recent decades, as human activities intensified towards deeper waters. Some recent disastrous events (e.g., the 2004 Indian Ocean and 2011 Japan tsunamis) highlighted geohazards socioeconomic impacts. Marine geohazards encompass an extensive list of features, processes, and events related to Marine Geology. In the scientific literature there are few systematic reviews concerning all of them. Using the search string ‘geohazard*’, this bibliometric-based review explored the scientific databases Web of Science and Scopus to analyze the evolution of peer-reviewed scientific publications and discuss trends and future challenges. The results revealed qualitative and quantitative aspects of 183 publications and indicated 12 categories of hazards, the categories more studied and the scientific advances. Interdisciplinary surveys focusing on the mapping and dating of past events, and the determination of triggers, frequencies, and current perspectives of occurrence (risk) are still scarce. Throughout the upcoming decade, the expansion and improvement of seafloor observatories’ networks, early warning systems, and mitigation plans are the main challenges. Hazardous marine geological events may occur at any time and the scientific community, marine industry, and governmental agencies must cooperate to better understand and monitor the processes involved in order to mitigate the resulting unpredictable damages.

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Canyon-confined pockmarks on the western Niger Delta slope

Cited by 25 publications

References 56 publications

Pliocene and Pleistocene stratigraphic evolution of the western Niger Delta intraslope basins: A record of glacio-eustatic sea-level and basin tectonic forcings

Pliocene and Pleistocene stratigraphic evolution of the western Niger Delta intraslope basins: A record of glacio-eustatic sea-level and basin tectonic forcings

The South American Advances in Submarine Canyons Studies and Their Link to the Ocean Decade

Marine Geohazards: A Bibliometric-Based Review

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