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| Wheeler, A. J.; Kozachenko, M.; Henry, L. -a.; Foubert, A.; De Haas, H.; Huvenne, V. A. I.; Masson, D.c.; Olu, Karine. |
| This paper presents a comprehensive overview of the Moira Mounds in the Porcupine Seabight, combining a review of currently published material with new data and interpretations. The Moira Mounds are circular to ovoid-shaped individual or clustered coral banks (referred to as "scleractinian spaced cluster macroreefs") located in the Belgica (carbonate) mound province, Porcupine Seabight, west of Ireland. They are up to 10 m high and 20 to 35 m in diameter. For the first time, a map showing the complete extent and location of the Moira Mounds is published, revealing 256 examples grouped into four areas mainly between 800 and 1100 m water depth. ROV groundtruthing revealed the importance of bedload sand transport in Moira Mound formation and development... |
| Tipo: Text |
Palavras-chave: Cold-water coral; Coral carbonate mound; Benthic processes; Biogeological processes; Marine geology; NE Atlantic. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00035/14633/12050.pdf |
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| Dorschel, B.; Jensen, L.; Arndt, J. E.; Brummer, G. -j.; De Haas, H.; Fielies, A.; Franke, D.; Jokat, W.; Krocker, R.; Kroon, D.; Paetzold, J.; Schneider, R. R.; Spiess, V.; Stollhofen, H.; Uenzelmann-neben, G.; Watkeys, M.; Wiles, E.. |
| We present a comprehensive regional bathymetric data compilation for the southwest Indian Ocean (swIOBC) covering the area from 4°S to 40°S and 20°E to 45°E with a spatial resolution of 250 m. For this, we used multibeam and singlebeam data as well as data from global bathymetric data compilations. We generated the swIOBC using an iterative approach of manual data cleaning and gridding, accounting for different data qualities and seamless integration of all different kinds of data. In comparison to existing bathymetric charts of this region, the new swIOBC benefits from nearly four times as many data-constrained grid cells and a higher resolution, and thus reveals formerly unseen seabed features. In the central Mozambique Basin a surprising variety of... |
| Tipo: Text |
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| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00428/53985/55152.pdf |
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| Huvenne, Veerle A. I.; Bailey, W. R.; Shannon, P. M.; Naeth, J; Di Primio, R.; Henriet, J. P.; Horsfield, B.; De Haas, H.; Wheeler, A; Olu, Karine. |
| The Magellan mound province is one of the three known provinces of carbonate mounds or cold-water coral banks in the Porcupine Seabight, west of Ireland. It has been studied in detail using a large and varied data set: 2D and 3D seismic data, sidescan sonar imagery and video data collected during ROV deployment have been used to describe the mounds in terms of origin, growth processes and burial. The aim of this paper is to present the Magellan mounds and their setting in an integrated, holistic way. More than 1,000 densely spaced and mainly buried mounds have been identified in the area. They all seem to be rooted on one seismic reflection, suggesting a sudden mound start-up. Their size and spatial distribution characteristics are presented, together with... |
| Tipo: Text |
Palavras-chave: Numerical basin modelling; Fault analysis; Mound morphology; Spatial distribution; Porcupine Basin; Cold water corals; Carbonate mounds. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2312.pdf |
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| Van Rooij, D.; Huvenne, V. A. I.; Blamart, D.; Henriet, J.-p.; Wheeler, A.; De Haas, H.. |
| The genesis and evolution of cold-water coral banks along the Northeastern Atlantic margin is known to be influenced by several factors, among which the palaeotopography and nature of the coral settling surface, the presence of bottom currents and sediment supply. In this paper, a case study is presented of the Enya mound cluster, located in the southernmost tip of the Belgica mound province, west of Ireland. Below this mound cluster, seismic stratigraphy revealed a yet unmapped local unconformity RD1b, being part of a composite erosion event (RD1). As such, from the Late Miocene to Late Pliocene, at least two erosional events have incised the margin, ending with the final RD1a "moundbase" unconformity, acting as a base for the Enya mounds. During the... |
| Tipo: Text |
Palavras-chave: Cold-water coral banks; Contourite drift; Pockmarks; Unconformity; Seismic stratigraphy. |
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/00219/33075/31550.pdf |
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