| Titre | Along slope variations in mass failures and relationships to major Plio-Pleistocene morphological elements, SW Labrador Sea |
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| Auteur | Deptuck, M E; Mosher, D C ; Campbell, D C; Hughes-Clarke, J E;
Noseworthy, D |
| Source | Submarine mass movements and their consequences: 3rd International Symposium; par Lykousis, V (éd.); Sakellariou, D (éd.); Locat, J (éd.); Advances in Natural and Technological Hazards Research vol. 27,
2007 p. 37-45, https://doi.org/10.1007/978-1-4020-6512-5 5 |
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| Année | 2007 |
| Séries alt. | Secteur des sciences de la Terre, Contribution externe 20070251 |
| Éditeur | Springer Netherlands |
| Réunion | 3rd International Symposium "Submarine mass movements and their consequences"; Santorini; GR; Octobre 1-3, 2007 |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.1007/978-1-4020-6512-5 5 |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Province | Région extracotière de l'est |
| Région | Mer du Labrador; Flemish Cap; Flemish Pass; Hawke TroughHopedale Saddle; Notre Dame Channel; Trinity Trough; Cartwright Saddle |
| Lat/Long OENS | -60.0000 -44.0000 57.0000 46.0000 |
| Sujets | dépôts de pentes; glissements de pentes; stabilité des pentes; analyses de la stabilité des pentes; glissements de terrain; dépôts de glissement de terrain; levés sismiques; levés de reflexion sismiques;
bathymétrie; Pliocène; Pléistocène; fosses abyssales; géologie des dépôts meubles/géomorphologie; géologie marine; géophysique; Cénozoïque; Quaternaire |
| Illustrations | croquis cartographiques; profils; coupes transversales |
| Programme | Les géosciences à l'appui de la gestion des océans Aléas géologiques et contraintes à la mise en valeur des ressources extracôtières |
| Programme | Canada-Newfoundland and Labrador Offshore Petroleum Board
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| Programme | ArcticNet |
| Programme | Programme des Réseaux de centres d'excellence |
| Diffusé | 2007 01 01 |
| Résumé | (disponible en anglais seulement)
The slope along the SW Labrador Sea is a prospective exploration frontier with limited legacy data and geoscience knowledge. Newly acquired multibeam and airgun
seismic profiles provide a better understanding of major near-seafloor morphological elements and the mass failures that comprise or helped shape them. A semi-continuous seismic section along the upper slope from Flemish Pass to north of Ham-ilton
Spur shows an alternation of major morphological elements that include canyons and failure corridors, inter-canyon ridges, ice-outlet trough mouth fans (TMFs), and sedimentary spurs. Preliminary geohazard investigation shows a wide variety of
Plio-Pleistocene mass failure products including shallow detachment faults, head-scarps, creep folds, decollement surfaces, and a preponderance of mass transport deposits (MTDs) of various origins. Particularly noteworthy are two newly identified
fans (probable TMFs) outboard the Hawke Saddle and Notre Dame Channel, and a shal-low buried failure complex north of the Hamilton Spur, which contains hundreds of giant km-scale slide blocks dispersed over thousands of square kilometers. |
| GEOSCAN ID | 224270 |
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