Comparison of Mass Wasting Processes on the Slopes of the Rockall Trough, Northeast Atlantic

  • Aggeliki GeorgiopoulouEmail author
  • Sara Benetti
  • Patrick M. Shannon
  • Fabio Sacchetti
  • Peter D. W. Haughton
  • Laia Comas-Bru
  • Sebastian Krastel
Part of the Advances in Natural and Technological Hazards Research book series (NTHR, volume 37)


The deep-water, sediment-starved Rockall Trough separates the western Irish shelf from the Rockall Bank. Both margins have narrow, steep slopes that connect the continental shelf with the deeper basin but differ in their underlying geological controls and sediment transport processes. We compare and contrast the opposing margins of the Rockall Trough and review the size, depth distribution and degree of mass wasting processes and associated geohazard risk on each margin.

Rapid contourite buildup, shallow underlying abrupt basement topography and slope oversteepening due to erosion at the base of the western margin have led to large slope failures such as the Rockall Bank Slide Complex.

In contrast, the eastern margin of the Rockall Trough marked the westernmost extent of the British Irish Ice Sheet, reflected on the shelf by the presence of end moraines. Sediment was delivered by meltwater discharged from the ice sheet which locally reached the shelf edge. In conjunction with the effect of erosion from bottom currents and localised slope failures, the waning of the ice sheet led to the formation of numerous canyons incising this slope.

Slope failures on the eastern margin were relatively small and sediment was progressively evacuated towards the deeper basin through canyons. In contrast, mass wasting on the western margin involved larger sediment volumes. Processes resulting in mass wasting on the western margin are likely to be still active. In contrast, the eastern margin that was glacially nourished is likely to be less active with only minor mass wasting resulting from contour current scour and local canyon margin collapse.


Submarine landslide Slope failure Scarp Glacial environment Statistical comparison 



The UCD authors acknowledge funding from a Griffith Geoscience Research Award of the Irish Department of Communications, Energy and Natural Resources under the National Geoscience Programme 2007–2013 Ireland. We also thank the Petroleum Affairs Division of the Irish Department of Communications, Energy and Natural Resources for providing the seismic data used in the project and the Marine Institute (Ireland) and the Geological Survey of Ireland for access to the INSS dataset. We also acknowledge IHS for the license to use the KINGDOM software. The editor, Prof Michael Strasser, and the reviewers, Drs Jan Sverre Laberg and Lorena Moscardelli, are gratefully thanked for their comments and valuable input.


  1. Armishaw JE, Holmes RW, Stow DAV (1998) Morphology and sedimentation on the Hebrides Slope and Barra Fan, NW UK continental margin. Geol Soc Spec Publ 129(1):81–104CrossRefGoogle Scholar
  2. Benetti S, Dunlop P, Ó Cofaigh C (2010) Glacial and glacially-related features on the continental margin of northwest Ireland mapped from marine geophysical data. J Maps 6(1):14–29CrossRefGoogle Scholar
  3. Bull S, Cartwright J, Huuse M (2009) A review of kinematic indicators from mass-transport complexes using 3D seismic data. Mar Petrol Geol 26(7):1132–1151CrossRefGoogle Scholar
  4. Cronin BT, Akhmetzhanov AM, Mazzini A, Akhmanov G, Ivanov M, Kenyon NH, Shipboard Scientists TTR (2005) Morphology, evolution and fill: implications for sand and mud distribution in filling deep-water canyons and slope channel complexes. Sediment Geol 179(1–2):71–97CrossRefGoogle Scholar
  5. Dahlgren KIT, Vorren TO, Stoker MS, Nielsen T, Nygard A, Petter Sejrup H (2005) Late Cenozoic prograding wedges on the NW European continental margin: their formation and relationship to tectonics and climate. Mar Petrol Geol 22(9–10):1089–1110CrossRefGoogle Scholar
  6. Elliott GM, Shannon PM, Haughton PDW, Praeg D, O’Reilly B (2006) Mid- to Late Cenozoic canyon development on the eastern margin of the Rockall Trough, offshore Ireland. Mar Geol 229(3–4):113–132CrossRefGoogle Scholar
  7. Elliott GM, Shannon PM, Haughton PDW, Øvrebø LK (2010) The Rockall Bank Mass Flow: collapse of a moated contourite drift onlapping the eastern flank of Rockall Bank, west of Ireland. Mar Petrol Geol 27(1):92–107CrossRefGoogle Scholar
  8. Flood RD, Hollister CD, Lonsdale P (1979) Disruption of the Feni sediment drift by debris flows from Rockall Bank. Mar Geol 32(3–4):311–334CrossRefGoogle Scholar
  9. Frey Martinez J, Cartwright J, Hall B (2005) 3D seismic interpretation of slump complexes: examples from the continental margin of Israel. Basin Res 17(1):83–108CrossRefGoogle Scholar
  10. Georgiopoulou A, Benetti S, Shannon PM, Haughton PDW, McCarron S (2012) Gravity flow deposits in the deep Rockall Trough, Northeast Atlantic. In: Yamada Y et al (eds) Submarine mass movements and their consequences, Advances in natural and technological hazards research. Springer, Dordrecht/Heidelberg/London/New York, pp 695–707CrossRefGoogle Scholar
  11. Georgiopoulou A, Shannon PM, Sacchetti F, Haughton PDW, Benetti S (2013) Basement-controlled multiple slope collapses, Rockall Bank Slide Complex. NE Atlantic Mar Geol. doi: 10.1016/j.margeo.2012.12.003 Google Scholar
  12. Hühnerbach V, Masson DG, Participants of the COSTA-Project (2004) Landslides in the North Atlantic and its adjacent seas: an analysis of their morphology, setting and behaviour. Mar Geol 213:343–362CrossRefGoogle Scholar
  13. McAdoo BG, Pratson LF, Orange D (2000) Submarine landslide geomorphology, US continental margin. Mar Geol 169:103–136CrossRefGoogle Scholar
  14. Moscardelli L, Wood L, Mann P (2006) Mass-transport complexes and associated processes in the offshore area of Trinidad and Venezuela. AAPG Bull 90(7):1059–1088CrossRefGoogle Scholar
  15. Sacchetti F, Benetti S, Georgiopoulou A, Dunlop P, Quinn R (2011) Geomorphology of the Irish Rockall Trough, North Atlantic Ocean, mapped from multibeam bathymetric and backscatter data. J Maps 2011:60–81CrossRefGoogle Scholar
  16. Sacchetti F, Benetti S, Georgiopoulou A, Shannon PM, O’Reilly BM, Dunlop P, Quinn R, Ó Cofaigh C (2012) Deep-water geomorphology of the glaciated Irish margin from high-resolution marine geophysical data. Mar Geol 291–294(1):113–131CrossRefGoogle Scholar
  17. Sejrup HP, Hjelstuen BO, Dahlgren KIT, Haflidason H, Kuijpers A, Nygard A, Praeg D, Stoker MS, Vorren TO (2005) Pleistocene glacial history of the NW European continental margin. Mar Petrol Geol 22(9–10):1111–1129CrossRefGoogle Scholar
  18. Stoker MS, Praeg D, Hjelstuen BO, Laberg JS, Nielsen T, Shannon PM (2005) Neogene stratigraphy and the sedimentary and oceanographic development of the NW European Atlantic margin. Mar Petrol Geol 22(9–10):977–1005CrossRefGoogle Scholar
  19. Unnithan V, Shannon PM, McGrane K, Readman PW, Jacob AWB, Keary R, Kenyon NH (2001) Slope instability and sediment redistribution in the Rockall Trough: constraints from GLORIA. In: Shannon PM et al (eds) The petroleum exploration of Ireland’s offshore basins, vol 188, Geol Society special publication., pp 439–454Google Scholar
  20. Weaver PPE, Wynn RB, Kenyon NH, Evans J (2000) Continental margin sedimentation, with special reference to the north-east Atlantic margin. Sedimentology 47(suppl 1):239–256CrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Aggeliki Georgiopoulou
    • 1
    Email author
  • Sara Benetti
    • 2
  • Patrick M. Shannon
    • 3
  • Fabio Sacchetti
    • 2
  • Peter D. W. Haughton
    • 3
  • Laia Comas-Bru
    • 3
  • Sebastian Krastel
    • 4
  1. 1.Marine & Petroleum Geology Group, UCD School of Geological SciencesUniversity College DublinDublinIreland
  2. 2.School of Environmental SciencesUniversity of UlsterColeraineNorthern Ireland, UK
  3. 3.UCD School of Geological SciencesUniversity College DublinDublinIreland
  4. 4.Institute of GeosciencesChristian-Albrechts-Universität zu KielKielGermany

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