Sediment dynamics and palaeo-environmental context at key stages in the Challenger cold-water coral mound formation: Clues from sediment deposits at the mound base

Huvenne, Veerle A.I.; Rooij, David Van; Mol, Ben De; Thierens, Mieke; O’Donnell, Rory; Foubert, Anneleen

doi:10.1016/j.dsr.2009.08.003

Cited by 60 publications

(63 citation statements)

References 56 publications

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“…Wheeler et al (2011) propose that the process of merging of individual mounds and clusters of mounds through continued growth may result in the formation of coral carbonate mounds, thus like the Moira Mounds which may represent an early growth phase for carbonate mounds, the mini-mounds of this study may represent a short-lived period of mound building. The process of accretion of these larger mounds is not well understood although coring through the Challenger Mound by IODP Expedition 307 revealed gradual reef stacking over the course of 2.6 Ma but the record is discontinuous with glacially derived sediments often missing (Huvenne et al, 2009a andThierens et al, 2009). It is unknown at this point whether the CWC mini-mounds of the Dangeard and Explorer provinces are relict due to a change in environmental conditions and therefore unlikely to support new coral growth even if fishing pressure were to be removed, or if trawling damage is solely to blame for the coral rubble in the area. If conditions were right, it is possible that the mounds may return to a more active and healthy state if fishing pressure was removed as dead coral framework is believed to offer a suitable substrata for renewed growth (Roberts et al, 2006).…”

Section: Canyon and Mini-mound Faunamentioning

confidence: 99%

“…The process of accretion of these large mounds is not well understood although coring through the Challenger Mound by IODP Expedition 307 revealed gradual reef stacking over the course of 2.6 Ma. However, the record is discontinuous with glacially derived sediments often missing (Huvenne et al, 2009a andThierens et al, 2009). Smaller CWC mounds, often termed 'mini-mounds', are also documented, such as the Moira Mounds that are 20-35 m in diameter and 3-11 m high and form part of the Belgica Mound province (Wheeler et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Within the Porcupine Seabight numerous mound provinces exist, in which mounds vary in size up to giant mounds of up to 160 m high and up to 5 km in length: Hovland mounds, Magellan mounds and the Belgica mounds ( De Mol et al, 2002, Hovland et al, 1994, Huvenne et al, 2009a, Van Rooij et al, 2009and Wheeler et al, 2007. The process of accretion of these large mounds is not well understood although coring through the Challenger Mound by IODP Expedition 307 revealed gradual reef stacking over the course of 2.6 Ma.…”

Section: Introductionmentioning

confidence: 99%

“…The Moira Mounds may serve as an analogue for mini-mounds, up to 5 m high, observed on Odet Spur located between Odet Canyon and Guilvinec Canyon . The Moira Mounds have no sub-surface expression so are proposed as initiated during Holocene times and it is suggested that the coalescence of individual mounds, or clusters of mounds, may result in the formation of large coral carbonate mounds, examples of which are located nearby, such as the Challenger Mound ( Huvenne et al, 2009a, Thierens et al, 2009and Wheeler et al, 2011.…”

Section: Introductionmentioning

confidence: 99%

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The Dangeard and Explorer canyons, South Western Approaches UK: Geology, sedimentology and newly discovered cold-water coral mini-mounds

Stewart

Davies

Guinan

et al. 2014

Deep Sea Research Part II: Topical Studies in Oceanography

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The Celtic Margin is a complex area in terms of sedimentary dynamics and evolution, with a number of submarine canyons dissecting the continental slope and outer continental shelf. The complex terrain and diverse range of sea-bed sediments play a part in submarine canyons being described as areas of high habitat heterogeneity. This study has concentrated on the heads of two canyons: Dangeard (also known as Dangaard) and Explorer (first named here) located in UK territorial waters, in water depths between 138 and 1165 m. Multibeam echosounder, 2D reflection seismic and photographic ground-truthing data have been combined to map the sea-bed geomorphology, sedimentary features and canyon megafauna of these canyons. In addition, two previously unknown provinces of cold-water coral (CWC) mini-mounds were discovered on the interfluves of the Dangeard and Explorer canyons.The study area comprises a dendritic network of gullies feeding into the canyon thalwegs. Amphitheatre rims, where slope angles are commonly in excess of 20°, occur along the margins and heads of both canyons and are interpreted as drainage basins indicative of retrogressive mass-wasting in a shelfward direction.The CWC mini-mounds occur in water depths between 250 m and 410 m, with more than 400 mounds identified. They are up to 3 m in height and 50-150 m in diameter with no sub-surface expression, suggesting these mounds are, in geological terms, relatively young and possibly Holocene in age. Biological analyses revealed that the mounds form a habitat for ophiuroids and Munida associated with Lophelia pertusa coral rubble, suggesting these mini-mounds are not present-day living features.

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Section: Canyon and Mini-mound Faunamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Dangeard and Explorer canyons, South Western Approaches UK: Geology, sedimentology and newly discovered cold-water coral mini-mounds

Stewart

Davies

Guinan

et al. 2014

Deep Sea Research Part II: Topical Studies in Oceanography

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“…Recent carbonate mounds stand as natural laboratories to link the build-up history and architecture to high-resolution sequence stratigraphy. Several studies in recent years have described environmental parameters controlling the growth and development of cold-water coral carbonate mounds on the North-east Atlantic continental margin (De Mol et al, 2002;Dorschel et al, 2005;Rüggeberg et al, 2005;Dorschel et al, 2007;Rüggeberg et al, 2007;Van Rooij et al, 2007;Huvenne et al, 2009;Margreth et al, 2009;Mienis et al, 2009;Van Rooij et al, 2009, among others).…”

Section: Keys To Palaeoenvironmental Controlmentioning

confidence: 99%

Carbonate mounds in shallow and deep time

et al. 2011

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Over a decade of research on recent cold-water coral mounds in various oceans has set the stage for comparative studies between recent and ancient carbonate mound systems, with the aim to unravel generic processes and reveal the "red thread" in a fundamental strategy of Life building Geology -a strategy nearly as ancient as Life itself. Natural laboratories have been identified in the present ocean, which provide new insights in oceanographic controls on species migration and settlement, in the interaction of currents and carbonate build-up, in the earliest diagenesis which overprints environmental signals and shapes the template of compartmentalization of carbonate build-ups, and in so many other processes and factors ultimately shaping carbonate bodies, comparable in size and properties to the large-scale carbonate hydrocarbon reservoirs in the geological record. Ocean drilling and coring is an essential component of this research. Ideally, this process is a two-way avenue between Shallow and Deep Time, where fundamental and industrial knowledge about fossil carbonate mounds can drive further investigations and even experimentation in the present seas, while the discoveries and process studies on "live" systems can yield new insights in the architecture and evolution of ancient reservoir systems. This bridging exercise is the quintessence of COCARDE (Cold-Water Carbonate Reservoir Systems in Deep Environments), an international network under the auspices of IOC-UNESCO (http://www.cocarde.eu). COCARDE has organised two workshops in 2009, with a significant support of European programmes (e.g. ESF Magellan workshop series) and partner projects (e.g. ESF EuroDIVERSITY project MiCROSYSTEMS). This special issue groups 12 papers, all addressing observations which by their nature have the potential to provide keys to generic processes, of relevance for past carbonate systems. As COCARDE proceeds, it is the objective to "reciprocate" in near future with an equivalent grouping of contributions from the study of fossil studies, to guide further research in the present ocean. It is the purpose of COCARDE to strengthen such a reflux from the studies of fossil systems by stimulating relevant continental drilling exercises, with comparable sampling protocols, resolution and analytical procedureswhere relevant -to allow direct comparisons with records from ocean drilling. The papers in this special issue have been structured in four themes: (i) keys to palaeoenvironmental control, (ii) mound initiation, growth and demise, (iii) of microbes and mounds, and (iv) tracking organomineralsRecent and Ancient.

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Benthic foraminiferal faunas associated with cold‐water coral environments in the North Atlantic realm

Fentimen

Schmiedl

Rüggeberg

et al. 2021

The Depositional Record

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Sediment dynamics and palaeo-environmental context at key stages in the Challenger cold-water coral mound formation: Clues from sediment deposits at the mound base

Cited by 60 publications

References 56 publications

The Dangeard and Explorer canyons, South Western Approaches UK: Geology, sedimentology and newly discovered cold-water coral mini-mounds

The Dangeard and Explorer canyons, South Western Approaches UK: Geology, sedimentology and newly discovered cold-water coral mini-mounds

Carbonate mounds in shallow and deep time

Benthic foraminiferal faunas associated with cold‐water coral environments in the North Atlantic realm

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