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Volume 26, Issue 4
  • E-ISSN: 1365-2117

Abstract

Abstract

Regionally extensive 3D seismic data from the Lower Congo Basin, offshore Angola, have been used to investigate the influence of salt‐related structures on the location, geometry and evolution of Miocene deep‐water depositional systems. Isochron variations and cross‐sectional lap‐out relationships have then been used to qualitatively reconstruct the syn‐depositional morphology of salt‐cored structures. Coherence and Red‐green‐blue‐blended spectral decomposition volumes, tied to cross‐sectional seismic facies, allow imaging of the main sediment transport pathways and the distribution of their component seismic facies. Major sediment transport pathways developed in an area of complex salt‐related structures comprising normal faults, isolated diapirs and elongate salt walls with intervening intraslope basins. Key structural controls on the location of the main sediment transport pathways and the local interaction between lobe‐channel‐levee systems and individual structures were the length and height of structures, the location and geometry of segment boundaries, the growth and linkage of individual structures, and the incidence angle between structural strike and flow direction. Where the regional flow direction was at a high angle to structural strike, transport pathways passed progressively through multiple intraslope basins in a fill and spill manner. Segment boundaries and structural lows between diapirs acted as spill points, focusing sediment transport between intraslope basins. Channel–lobe transitions are commonly associated with these spill points, where flows expanded and entered depocentres. Deflection of channel‐levee complexes around individual structures was mainly controlled by the length of structures and incidence angle. Where regional flow direction was at a low angle to structural strike, sediment transport pathways ran parallel to structure and were confined to individual intraslope basins for many tens of kilometres. Spill between intraslope basins was rare. The relative position of structures and their segment boundaries was fixed during the Miocene, which effectively pinned the locations where sediment spilled from one intraslope basin to the next. As a result, major sediment transport pathways were used repeatedly, giving rise to vertically stacked lobe‐channel‐levee complexes along the pathways. Shadow zones devoid of coarse clastics developed in areas that were either structurally isolated from the sediment transport pathways or bypassed as a result of channel diversion.

Basin Research © 2014 John Wiley & Sons Ltd, European Association of Geoscientists & Engineers and International Association of Sedimentologists © 2013 The Authors. Basin Research © 2013 John Wiley & Sons Ltd, European Association of Geoscientists & Engineers and International Association of Sedimentologists
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2014-03-05
2024-04-20

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References

  1. Albertão, G.A., Mulder, T. & Eschard, R. (2011) Impact of salt‐related palaeotopography on the distribution of turbidite reservoirs: evidence from well‐seismic analyses and structural restorations in the Brazilian offshore. Mar. Petrol. Geol., 28, 1023–1046.
     [Google Scholar]
  2. Alves, T.M. (2010) 3D Seismic examples of differential compaction in mass‐transport deposits and their effect on post‐failure strata. Mar. Geol., 271, 212–224.
     [Google Scholar]
  3. Anderson, J.E., Cartwright, J., Drysdall, S.J. & Vivian, N. (2000) Controls on turbidite sand deposition during gravity‐driven extension of a passive margin: examples from Miocene sediments in Block 4, Angola. Mar. Petrol. Geol., 17, 1165–1203.
     [Google Scholar]
  4. Brice, S.E., Cochran, M.D., Pardo, G. & Edwards, A.D. (1982) Tectonics and sedimentation of the South Atlantic rift sequence: Cabinda, Angola. Stud. Cont. Margin Geol., 34, 5–18.
     [Google Scholar]
  5. Broucke, O., Temple, F., Rouby, D., Robin, C., Calassou, S., Nalpas, T. & Guillocheau, F. (2004) The role of deformation processes on the geometry of mud‐dominated turbiditic systems, Oligocene and Lower‐Middle Miocene of the Lower Congo Basin (West African Margin). Mar. Petrol. Geol., 21, 327–348.
     [Google Scholar]
  6. Brun, J.P. & Fort, X. (2004) Compressional salt tectonics (Angolan margin). Tectonophysics, 382, 129–150.
     [Google Scholar]
  7. Brun, J.P. & Mauduit, T.P.O. (2008) Rollovers in salt tectonics: the inadequacy of the listric fault model. Tectonophysics, 457, 1–11.
     [Google Scholar]
  8. Clark, I.R. & Cartwright, J. (2009) Interactions between submarine channel systems and deformation in deepwater fold belts: examples from the Levant Basin, Eastern Mediterranean sea. Mar. Petrol. Geol., 26, 1465–1482.
     [Google Scholar]
  9. Clark, I.R. & Cartwright, J. (2011) Key controls on submarine channel development in structurally active settings. Mar. Petrol. Geol., 28, 1333–1349.
     [Google Scholar]
  10. Cronin, B.T. (1995) Structurally‐controlled deep sea channel courses: examples from the Miocene of southeast Spain and the Alboran Sea, southwest Mediterranean. In: Characterization of Deep Marine Clastic Systems (Ed. by A.J.Hartley & D.J.Prosser ), pp. 115–135. Geological Society, London.
     [Google Scholar]
  11. Deptuck, M.E., Sylvester, Z., Pirmez, C. & O'byrne, C. (2007) Migration‐aggradation history and 3‐D seismic geomorphology of submarine channels in the Pleistocene Benin‐major Canyon, western Niger Delta slope. Mar. Petrol. Geol., 24, 406–433.
     [Google Scholar]
  12. Dutton, D.M. & Trudgill, B.D. (2009) 4‐D analysis of the Sembo relay system, offshore Angola: implications for fault growth in salt detached settings. AAPG Bull., 93, 763–794.
     [Google Scholar]
  13. Duval, B., Cramez, C. & Jackson, M.P.A. (1992) Raft tectonics in the kwanza basin, Angola. Mar. Petrol. Geol., 9, 389–404.
     [Google Scholar]
  14. Fort, X., Brun, J.P. & Chauvel, F. (2004) Salt tectonics on the Angolan margin, synsedimentary deformation processes. AAPG Bull., 88, 1523–1544.
     [Google Scholar]
  15. Gamboa, D., Alves, T.M. & Cartwright, J. (2012) A submarine channel confluence classification for topographically confined slopes. Mar. Petrol. Geol., 35, 176–189.
     [Google Scholar]
  16. Gee, M.J.R. & Gawthorpe, R.L. (2006) Submarine channels controlled by salt tectonics: examples from 3D seismic data offshore Angola. Mar. Petrol. Geol., 23, 443–458.
     [Google Scholar]
  17. Gee, M.J.R. & Gawthorpe, R.L. (2007) Early evolution of submarine channels offshore Angola revealed by three‐dimensional seismic data. In: Seismic Geomorphology: Applications to Hydrocarbon Exploration and Production (Ed. by R.J.Davies , H.W.Posamentier , L.J.Wood & J.A.Cartwright ), pp. 223–235. Geological Society, London.
     [Google Scholar]
  18. Gradstein, F.M., Ogg, J.G., Schmitz, M.D. & Ogg, G.M., eds. (2012) The Geologic Time Scale 2012. Elsevier, 1144pp.
     [Google Scholar]
  19. Hadler‐Jacobsen, F., Johannessen, E.P., Ashton, N., Henriksen, S., Johnson, S.D. & Kristensen, J.B. (2005) Submarine Fan Morphology and Lithology Distribution. Petroleum Geology: North‐West Europe and Global Perspectives‐Proceedings of the 6th Petroleum Geology Conference. pp. 1121–1145. Geological Society, London.
     [Google Scholar]
  20. Hadler‐Jacobsen, F., Gardner, M.H. & Borer, J.M. (2007) Seismic stratigraphic and geomorphic analysis of deep‐marine deposition along the West African continental margin. In: Seismic Geomorphology: Applications to Hydrocarbon Exploration and Production (Ed. by R.J.Davies , H.W.Posamentier , L.J.Wood & J.A.Cartwright ), pp. 47–84. Geological Society, London.
     [Google Scholar]
  21. Haq, B.U., Hardenbol, J. & Vail, P.R. (1987) The chronology of fluctuating sea level since the Triassic. Science, 235, 1156–1167.
     [Google Scholar]
  22. Hay, D.C. (2012) Stratigraphic evolution of a tortuous corridor from the stepped slope of Angola. In: Application of the Principles of Seismic Geomorphology to Continental‐Slope and Base‐of‐Slope Systems: Case Studies from Seafloor and Near‐Seafloor Analogues (Ed. by E.Bradford , M.D.Prather , D.Mohrig , B.Van Hoorn & R.B.Wynn ) SEPM Spec. Publ., 99, 163–180.
     [Google Scholar]
  23. Henderson, J., Purves, S.J. & Leppard, C. (2007) Automated delineation of geological elements from 3D seismic data through analysis of multi‐ channel, volumetric spectral decomposition data. First Break, 25, 87–93.
     [Google Scholar]
  24. Hudec, M.R. & Jackson, M.P.A. (2004) Regional restoration across the Kwanza Basin, Angola: salt tectonics triggered by repeated uplift of a metastable passive margin. AAPG Bull., 88, 971–990.
     [Google Scholar]
  25. Hudec, M.R. & Jackson, M.P.A. (2007) Terra infirma: understanding salt tectonics. Earth‐Sci. Rev., 82, 1–28.
     [Google Scholar]
  26. Huismans, R.S. & Beaumont, C. (2011) Depth‐dependent extension, two‐stage breakup and cratonic underplating at rifted margins. Nature, 473, 74–78.
     [Google Scholar]
  27. Huyghe, P., Foata, M., Deville, E. & Mascle, G. (2004) Channel profiles through the active thrust front of the southern Barbados prism. Geology, 32, 429–432.
     [Google Scholar]
  28. Jackson, M.P.A., Cramez, C. & Fonck, J.M. (2000) Role of subaerial volcanic rocks and mantle plumes in creation of South Atlantic margins: implications for salt tectonics and source rocks. Mar. Petrol. Geol., 17, 477–498.
     [Google Scholar]
  29. Janocko, M., Nemec, W., Henriksen, S. & Warchol, M. (2012) The diversity of deep‐water sinuous channels and their architectural elements. Mar. Petrol. Geol., 41, 7–34.
     [Google Scholar]
  30. Kane, I.A., Catterall, V., McCaffrey, W.D. & Martinsen, O.J. (2010) Submarine channel response to intra‐basinal tectonics: the influence of lateral‐tilt. AAPG Bull., 94, 189–219.
     [Google Scholar]
  31. Kneller, B.C. (2003) The influence of flow parameters on turbidite channel slope architecture. Mar. Petrol. Geol., 20, 901–910.
     [Google Scholar]
  32. Lavier, L.L., Steckler, M.S. & Brigaud, F. (2001) Climatic and tectonic control on the Cenozoic evolution of the West African margin. Mar. Geol., 178, 63–80.
     [Google Scholar]
  33. Lomask, J., Francis, J.M., Rickett, J., Buursink, M.L., Gerber, T.P., Perlmutter, M. & Paola, C. (2009) New tools for seismic stratigraphic interpretation: stratal convergence and instantaneous isochron attribute cubes derived from volumetric flattening of experimental strata. AAPG Bull., 93(4), 453–459.
     [Google Scholar]
  34. Lunde, G., Aubert, K., Lauritzen, O. & Lorange, E. (1992) Tertiary uplift of the Kwanza Basin in Angola. In: Geologie Africaine, Compte Rendu De Colloques De Geologie De Libreville (Ed. by R.Curnelle ) Bull. Centre Rech. Explor. Prod. Elf Aquitaine., 13, 9–11.
     [Google Scholar]
  35. Lundin, E.R. (1992) Thin‐skinned extensional tectonics on a salt detachment, northern Kwanza Basin, Angola. Mar. Petrol. Geol., 9, 405–411.
     [Google Scholar]
  36. Marfurt, K. & Kirlin, R. (2001) Narrow‐band spectral analysis and thin‐bed tuning. Geophysics, 66, 1274–1283.
     [Google Scholar]
  37. Marsh, N., Imber, J., Holdsworth, R.E., Brockbank, W.P. & Ringrose, P. (2010) The structural evolution of the Halten Terrace, offshore mid‐Norway: extensional fault growth and strain localisation in amulti‐layer brittle‐ductile system. Basin Res., 22, 195–214.
     [Google Scholar]
  38. Marton, L.G., Tari, G.C. & Lehmann, C.T. (2000) Evolution of the Angolan passive margin, West Africa, with emphasis on post‐salt structural styles. In: Atlantic Rifts and Continental Margins (Ed. by W.Mohriak & M.Talwani ) Am. Geophys. Union Washington, 115, 129–149.
     [Google Scholar]
  39. Mayall, M., Jones, E. & Casey, M. (2006) Turbidite channel reservoirs – key elements in facies prediction and effective development. Mar. Petrol. Geol., 23, 821–841.
     [Google Scholar]
  40. Mayall, M., Lonergan, L., Bowman, A., James, S., Mills, K., Primmer, T., Pope, D., Rogers, L. & Skeene, R. (2010) The response of turbidite slope channels to growth induced seabed topography. AAPG Bull., 94, 1011–1030.
     [Google Scholar]
  41. Miller, K.G., Kominz, M.A., Browning, J.V., Wright, J.D., Mountain, G.S., Katz, M.E., Sugarman, P.J., Cramer, B.S., Christieblick, N. & Pekar, S.F. (2005) The Phanerozoic record of global sea‐level change. Science, 310, 1293.
     [Google Scholar]
  42. Mitchum, R.M.J., Vail, P.R. & Sangree, J.B., eds. (1977) Seismic stratigraphy and global changes of sea level, part 6: stratigraphic interpretation of seismic reflection patterns in depositional sequences. In: Seismic Stratigraphy – Applications to Hydrocarbon Exploration (Ed. by C.E.Payton ) AAPG Mem., 26, 117–133.
     [Google Scholar]
  43. Moulin, M., Aslanian, D., Olivet, J.‐L., Contrucci, I., L, M., L, G.E., F, K., Nouz′E, H., J‐P, R.E. & P, U. (2005) Geological constraints on the evolution of the Angolan margin based on reflection and refraction seismic data (ZaïAngo project). Geophys. J. Int., 162, 793–810.
     [Google Scholar]
  44. Partyka, G.J., Gridley, J. & Lopez, J. (1999) Interpretational applications of spectral decomposition in reservoir characterization. Lead. Edge, 18, 353–360.
     [Google Scholar]
  45. Peel, F.J., Travis, C.J. & Hossack, J.R. (1995) Genetic structural provinces and salt tectonics of the Cenozoic offshore U.S. Gulf of Mexico: a preliminary analysis. In: Salt Tectonics: A Global Perspective (Ed. by M.P.A.Jackson , D.G.Roberts & S.Snelson ) AAPG Mem., 65, 153–175.
     [Google Scholar]
  46. Posamentier, H.W. & Kolla, V. (2003) Seismic geomorphology and stratigraphy of depositional elements in deep‐water settings. J. Sed. Res., 73, 367–388.
     [Google Scholar]
  47. Prather, B.F. (2003) Controls on reservoir distribution, architecture and stratigraphic trapping in slope settings. Mar. Petrol. Geol., 20, 529–545.
     [Google Scholar]
  48. Prather, B.E., Booth, J.R., Steffens, G.S. & Craig, P.A. (1998) Classification, lithologic calibration and stratigraphic succession of seismic facies from intraslope basins, deep water Gulf of Mexico, USA. AAPG Bull., 82(5), 701–728.
     [Google Scholar]
  49. Rouby, D., Raillard, S., Guillocheau, F., Bouroullec, R. & Nalpas, T. (2002) Kinematics of a growth fault/raft system on the West African margin using 3‐D restoration. J. Struct. Geol., 24, 783–796.
     [Google Scholar]
  50. Rowan, M.G. & Vendeville, B. (2006) Foldbelts with early salt withdrawal and diapirism: physical model and examples from the northern Gulf of Mexico and the Flinders Ranges, Australia. Mari. Petrol. Geol., 23, 871–891.
     [Google Scholar]
  51. Rowan, M.G. & Weimer, P. (1998) Salt‐sediment interaction, northern Green canyon and Ewing Bank (offshore Louisiana), northern Gulf of Mexico. AAPG Bull., 82, 1055–1082.
     [Google Scholar]
  52. Sahagian, D. (1988) Epiorogenic motions of Africa as inferred from Cretaceous shoreline deposits. Tectonics, 7, 125–138.
     [Google Scholar]
  53. Seranne, M. & Anka, Z. (2005) South Atlantic continental margins of Africa: a comparison of the tectonic vs climate interplay on the evolution of equatorial west Africa and SW Africa margins. J. Afr. Earth Sci., 43, 283–300.
     [Google Scholar]
  54. Seranne, M., Seguret, M. & Fauchier, M. (1992) Seismic super‐units and post‐rift evaluation of the continental passive margin of southern Gabon. Bull. Soc. Geol. Fr., 163, 135–146.
     [Google Scholar]
  55. Sinclair, H.D. & Tomasso, M. (2002) Depositional evolution of confined turbidite basins. J. Sed. Res., 72, 451–456, doi: 410.1306/111501720451.
     [Google Scholar]
  56. Smith, R. (2004) Silled sub‐basins to connected tortuous corridors: sediment distribution systems on topographically complex sub‐aqueous slopes. In: Confined Turbidite Systems (Ed. by S.A.Lomas & P.Joseph ) Geol. Soc. London Spec. Publ., 222, 23–44.
     [Google Scholar]
  57. Spathopoulos, F. (1996) An insight on salt tectonics in the Angola Basin, south Atlantic. In: Salt Tectonics (Ed. by D.J.Blundell , G.I.Alsop & J.Davison ) Geol. Soc. London Spec. Publ., 100, 153–174.
     [Google Scholar]
  58. Stow, D.A.V. & Mayall, M. (2000) Deep‐water sedimentary systems: new models for the 21st century. Mar. Petrol. Geol., 17, 125–135.
     [Google Scholar]
  59. Stow, D.A.V. & Piper, D.J.W. (1984) Deep‐water fine‐grained sediments: facies models. Geol. Soc. London Spec. Publ., 15, 611–646.
     [Google Scholar]
  60. Straub, K.M. & Mohrig, D. (2009) Growth of constructional canyons via sheet flow turbidity currents: observations from offshore Brunei Darussalam. J. Sed. Res., 79, 24–39.
     [Google Scholar]
  61. Valle, P.J., Gjelberg, J.G. & Helland‐Hansen, W. (2001) Tectonostratigraphic development in the eastern Lower Congo Basin, offshore Angola, West Africa. Mar. Petrol. Geol., 18, 909–927.
     [Google Scholar]
  62. Warren, J. (1999) Evaporites: Their Evolution and Economics. Blackwell Science, Oxford.
     [Google Scholar]
  63. Wu, S. & Bally, A.W. (2000) Slope tectonics‐comparisons and contrasts of structural styles of salt and shale tectonics of the northern Gulf of Mexico with shale tectonics of offshore Nigeria in Gulf of Guinea. In: Atlantic Rifts and Continental Margins (Ed. by W.Mohriak & M.Talwani ) Am. Geophys. Union Geophys. Monogr., 115, 151–172. Washington
     [Google Scholar]
  64. Wynn, R.B., Masson, D.G., Stow, D.A.V. & Weaver, P.P.E. (2000) The Northwest African slope apron: a modern analogue for deep‐water systems with complex seafloor topography. Mar. Petrol. Geol., 17, 253–265.
     [Google Scholar]
  65. Wynn, R.B., Kenyon, N.H., Masson, D.G., Stow, D.A.V. & Weaver, P.P.E. (2002) Characterization and recognition of deep‐water channel‐lobe transition zones. AAPG Bull., 86, 1441–1462.
     [Google Scholar]
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Salt tectonic controls on deep‐water turbidite depositional systems: Miocene, southwestern Lower Congo Basin, offshore Angola
Basin Research 26, 597 (2014); https://doi.org/10.1111/bre.12051
/content/journals/10.1111/bre.12051
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