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Volume 32, Issue 5
  • E-ISSN: 1365-2117

Abstract

[Abstract

The East African Rift System (EARS) exerted a major influence on river drainage basins and regional climate of east Africa during the Cenozoic. Recent studies have highlighted an offshore branch of the EARS in the western Indian Ocean, where the Kerimbas Graben and the Davie Ridge represent its sea floor expression. To date, a clear picture of the impact and timing of this EARS offshore branch on the continental margin of the western Indian Ocean, and associated sediment dispersal pathways, is still missing. This study presents new evidence for four giant canyons along the northern portion of the Davie Ridge offshore Tanzania. Seismic and multibeam bathymetric data highlight that the southernmost three canyons are now inactive, supra‐elevated relative to the adjacent sea floor of the Kerimbas Graben and disconnected from the modern slope systems offshore the Rovuma and Rufiji River deltas. Regional correlation of dated seismic horizons, integrated with well data and sediment samples, proves that the tectonic activity driving the uplift of the Davie Ridge in this area has started during the middle‐upper Miocene and is still ongoing, as suggested by the presence of fault escarpments at the sea floor and by the location and magnitude of recent earthquakes. Our findings contribute to placing the Kerimbas Graben and the Davie Ridge offshore Tanzania in the regional geodynamic context of the western Indian Ocean and show how the tectonics of the offshore branch of the EARS modified the physiography of the margin, re‐routing the deep‐water drainage network since the middle Miocene. Future studies are needed to understand the influence of changing sea floor topography on the western Indian Ocean circulation and to evaluate the potential of the EARS offshore tectonics in generating tsunamigenic events.

,

This study presents the discovery of four giant canyons along the northern portion of the Davie Ridge (western Indian Ocean). Three canyons are now inactive, supra‐elevated relative to the adjacent sea floor and disconnected from the modern slope systems offshore the Rovuma and Rufiji River deltas. The chronological constraints available suggest that the tectonic activity driving the uplift of the Davie Ridge in this area has started during the middle‐upper Miocene. Our findings contribute to placing the Kerimbas Graben and the Davie Ridge offshore Tanzania in the regional geodynamic context of the western Indian Ocean and show how the tectonics of the offshore branch of the EARS modified the physiography of the margin, re‐routing the deep‐water drainage network.

]
Basin Research © 2020 John Wiley & Sons Ltd, European Association of Geoscientists & Engineers and International Association of Sedimentologists © 2019 The Authors. Basin Research © 2019 John Wiley & Sons Ltd, European Association of Geoscientists & Engineers and International Association of Sedimentologists
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2020-09-26
2024-04-27

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References

  1. Abreu, V., Sullivan, M., Pirmez, C., & Mohrig, D. (2003). Lateral accretion packages (LAPs): An important reservoir element in deep water sinuous channels. Marine and Petroleum Geology, 20, 631–648. https://doi.org/10.1016/j.marpetgeo.2003.08.003
     [Google Scholar]
  2. Boesiger, T. M., de Kaenel, E., Bergen, J. A., Browning, E., & Blair, S. A. (2017). Oligocene to Pleistocene taxonomy and stratigraphy of the genus Helicosphaera and other placolith taxa in the circum North Atlantic Basin. Journal of Nannoplankton Research, 37, 145–175.
     [Google Scholar]
  3. Bourget, J., Zaragosi, S., Garlan, T., Gabelotaud, I., Guyomard, P., Dennielou, B., … Schneider, J. L. (2008). Discovery of a giant deep‐sea valley in the Indian Ocean, off eastern Africa: The Tanzania channel. Marine Geology, 255, 179–185. https://doi.org/10.1016/j.margeo.2008.09.002
     [Google Scholar]
  4. Brown, A. R. (2004). Interpretation of three‐dimensional seismic data (5th ed., p. 514). Tulsa, OK: AAPG Memoir 42.
     [Google Scholar]
  5. Calais, E., Ebinger, C. J., Hartnady, C., & Nocquet, J. M. (2006). Kinematics of the East African rift from GPS and earthquake slip vector data. In G. Yirgu, C. J. Ebinger, & P. K. H. Maguire (Eds.), The Afar Volcanic Province within the East African Rift System. Geological Society Special Publication, 259, 9–22.
     [Google Scholar]
  6. Chen, C. T., & Millero, F. J. (1977). Speed of sound in seawater at high pressures. Journal of the Acoustic Society of America, 62, 1129–1135. https://doi.org/10.1121/1.381646
     [Google Scholar]
  7. Chen, Q., & Sidney, S. (1997). Seismic attribute technology for reservoir forecasting and monitoring. The Leading Edge, 16, 445–448. https://doi.org/10.1190/1.1437657
     [Google Scholar]
  8. Chorowitz, J. (2005). The East African Rift System. Journal African Earth Sciences, 43, 379–410. https://doi.org/10.1016/j.jafrearsci.2005.07.019
     [Google Scholar]
  9. Coffin, M. F., & Rabinowitz, P. D. (1982). A multichannel seismic transect of the Somalian Continental Margin. Houston, TX: Offshore Technology Conference.
     [Google Scholar]
  10. Coffin, M. F., & Rabinowitz, P. D. (1987). Reconstruction of Madagascar and Africa: Evidence from the Davie Fracture Zone and Western Somali Basin. Journal of Geophysical Research, 92, 9385–9406. https://doi.org/10.1029/JB092iB09p09385
     [Google Scholar]
  11. Coffin, M. F., & Rabinowitz, P. D. (1992). The Mesozoic East African and Madagascan conjugate continental margins; stratigraphy and tectonics. In J. S.Watkins, Z.Feng, & K. J.McMillen (Eds.), Geology and geophysics of continental margins (pp. 207–240). Tulsa, OK: AAPG Memoir 53.
     [Google Scholar]
  12. Cohen, A. S., Soreghan, M. J., & Scholz, C. A. (1993). Estimating the age of formation of lakes: An example of Lake Tanganyika, East African Rift System. Geology, 21, 511–514.
     [Google Scholar]
  13. Courgeon, S., Bachèlery, P., Jouet, G., Jorry, S. J., Bou, E., BouDagher‐Fadel, M. K., … Poli, E. (2018). The offshore east African rift system: New insights from the Sakalaves seamounts (Davie Ridge, SW Indian Ocean). Terra Nova, 30, 380–388. https://doi.org/10.1111/ter.12353
     [Google Scholar]
  14. Dorschel, D., Jensen, L., Arndt, J. E., Brummer, G.‐J., de Haas, H., Fielies, A., … Wiles, E. (2018). The Southwest Indian Ocean Bathymetric Compilation (swIOBC). Geochemistry, Geophysics, Geosystems, 19, 968–976. https://doi.org/10.1002/2017GC007274
     [Google Scholar]
  15. Ebinger, C. J., & Sleep, N. (1998). Cenozoic magmatism throughout East Africa resulting from impact of a single plume. Nature, 395, 788–791. https://doi.org/10.1038/27417
     [Google Scholar]
  16. Franke, D., Jokat, W., Ladage, S., Stollhofen, H., Klimke, J., Lutz, R., … Schreckenberger, B. (2015). The offshore East African Rift System: Structural framework at the toe of a juvenile rift. Tectonics, 34, 2086–2104. https://doi.org/10.1002/2015TC003922
     [Google Scholar]
  17. Frey‐Martínez, J. (2010). 3D seismic interpretation of mass transport deposits: Implications for basin analysis and geohazard evaluation. In D. C.Mosher, R. C.Shipp, L.Moscardelli, J. D.Chaytor, C. D. P.Baxter, H. J.Lee, & L.Urgeles (Eds.), Submarine mass movements and their consequences. Advances in natural and technological hazards research (Vol. 28, pp. 553–568). Dordrecht: Springer.
     [Google Scholar]
  18. Goudie, A. S. (2005). The drainage of Africa since the Cretaceous. Geomorphology, 67, 437–456. https://doi.org/10.1016/j.geomorph.2004.11.008
     [Google Scholar]
  19. Grimison, N. L., & Chen, W.‐P. (1988). Earthquakes in the Davie Ridge‐Madagascar region and the southern Nubian‐Somalian plate boundary. Journal of Geophysical Research, 93, 439–450. https://doi.org/10.1029/JB093iB09p10439
     [Google Scholar]
  20. Hampton, M. A., Lee, H. J., & Locat, J. (1996). Submarine landslides. Reviews of Geophysics, 34, 33–59. https://doi.org/10.1029/95RG03287
     [Google Scholar]
  21. Heirtzler, J. R., & Burroughs, R. H. (1971). Madagascar's paleoposition: New data from the Mozambique channel. Science, 174, 488–490. https://doi.org/10.1126/science.174.4008.488
     [Google Scholar]
  22. Kent, P. E., Hunt, J. A., & Johnstone, D. W. (1971). The geology and geophysics of coastal Tanzania (Institute of Geological Sciences Geophysical Paper No. 6). London: HMSO.
     [Google Scholar]
  23. Klimke, J., & Franke, D. (2016). Gondwana breakup: No evidence for a Davie Fracture Zone offshore northern Mozambique, Tanzania and Kenya. Terra Nova, 28, 233–244. https://doi.org/10.1111/ter.12214
     [Google Scholar]
  24. Kroon, D., & The Shipboard Scientific Party . (2010). Tropical temperature history during Paleogene Global Warming (GLOW) events (NIOZ Site Survey Cruise Report, R.V. Pelagia Cruise Number, 64PE303, p. 151).
  25. Leeder, M. R., & Jackson, J. A. (1993). The interaction between normal faulting and drainage in active extensional basins, with examples from the western United States and central Greece. Basin Research, 5, 79–102. https://doi.org/10.1111/j.1365-2117.1993.tb00059.x
     [Google Scholar]
  26. Liu, X., Rendle‐Bühring, R., & Henrich, R. (2016). Climate and sea‐level controls on turbidity current activity on the Tanzanian upper slope during the last deglaciation and the Holocene. Quaternary Science Reviews, 133, 15–27. https://doi.org/10.1016/j.quascirev.2015.12.002
     [Google Scholar]
  27. Macgregor, D. (2015). History of the development of the East African Rift System: A series of interpreted maps through time. Journal of African Earth Sciences, 101, 232–252. https://doi.org/10.1016/j.jafrearsci.2014.09.016
     [Google Scholar]
  28. Mahanjane, E. S. (2014). The Davie Fracture Zone and adjacent basins in the offshore Mozambique Margin – A new insights for the hydrocarbon potential. Marine and Petroleum Geology, 57, 561–571. https://doi.org/10.1016/j.marpetgeo.2014.06.015
     [Google Scholar]
  29. Maslin, M. M., Brierley, C. M., Milner, A. M., Shultz, S., Trauth, M. H., & Wilson, K. E. (2014). East African climate pulses and early human evolution. Quaternary Science Reviews, 101, 1–17. https://doi.org/10.1016/j.quascirev.2014.06.012
     [Google Scholar]
  30. McDonough, K.‐J., Bouanga, E., Pierard, C., Horn, B., Emmet, P., Gross, J., … Granath, J. (2013). Wheeler‐transformed 2D seismic data yield fan chronostratigraphy of offshore Tanzania. The Leading Edge, 32, 162–170. https://doi.org/10.1190/tle32020162.1
     [Google Scholar]
  31. Moucha, R., & Forte, A. M. (2011). Changes in African topography driven by mantle convection. Nature Geoscience, 4, 707–712. https://doi.org/10.1038/ngeo1235
     [Google Scholar]
  32. Mougenot, D., Recq, M., Virlogeux, P., & Lepvrier, C. (1986). Seaward extension of the East African Rift. Nature, 321, 599–603. https://doi.org/10.1038/321599a0
     [Google Scholar]
  33. Nicholas, C. J., Pearson, P. N., Bown, P. R., Dunkley Jones, T., Huber, B. T., Karega, A., … Wade, B. S. (2006). Stratigraphy and sedimentology of the Upper Cretaceous to Paleogene Kilwa Group, southern coastal Tanzania. Journal of African Earth Sciences, 45, 431–466. https://doi.org/10.1016/j.jafrearsci.2006.04.003
     [Google Scholar]
  34. Nicholas, C. J., Pearson, P. N., McMillan, I. K., Ditchfield, P. W., & Singano, J. M. (2007). Structural evolution of southern coastal Tanzania since the Jurassic. Journal of African Earth Sciences, 48, 273–297. https://doi.org/10.1016/j.jafrearsci.2007.04.003
     [Google Scholar]
  35. Nyblade, A., & Robinson, S. (1994). The African superswell. Geophysical Research Letters, 21, 765–768. https://doi.org/10.1029/94GL00631
     [Google Scholar]
  36. O’Sullivan, N. (2013). The geological evolution of the Southern Tanzanian continental margin (PhD Thesis). University of Dublin, Trinity College.
  37. Posamentier, H. W., & Kolla, V. (2003). Seismic geomorphology and stratigraphy of depositional elements in deep‐water settings. Journal of Sedimentary Research, 73, 367–388. https://doi.org/10.1306/111302730367
     [Google Scholar]
  38. Rabinowitz, P. D. (1971). Gravity anomalies across the East African Continental Margin. Journal of Geophysical Research, 76, 7107–7117. https://doi.org/10.1029/JB076i029p07107
     [Google Scholar]
  39. Raffi, I., Backman, J., Fornaciari, E., Palike, H., Rio, D., Lourens, L. J., & Hilgen, F. J. (2006). A review of calcareous nannofossil astrobiochronology encompassing the past 25 million years. Quaternary Science Reviews, 25, 3113–3137. https://doi.org/10.1016/j.quascirev.2006.07.007
     [Google Scholar]
  40. Reeves, C. V., & de Wit, M. J. (2000). Making ends meet in Gondwana: Retracing the transforms of the Indian Ocean and reconnecting continental shear zones. Terra Nova, 12(6), 272–280. https://doi.org/10.1046/j.1365-3121.2000.00309.x
     [Google Scholar]
  41. Reeves, C. V., Teasdale, J. P., & Mahanjane, E. S. (2016). Insight into the eastern margin of Africa from a new tectonic model of the Indian Ocean. Geological Society London, Special Publications, 431, 299–322. https://doi.org/10.1144/SP431.12
     [Google Scholar]
  42. Rijks, E. J. H., & Jauffred, J. C. E. M. (1991). Seismic interpretation 29; attribute extraction; an important application in any detailed 3‐D interpretation study. The Leading Edge, 10, 11–19. https://doi.org/10.1190/1.1436837
     [Google Scholar]
  43. Roberts, E. M., Stevens, N. J., O’Connor, P., Dirks, P. H. G. M., Gottfried, M. D., Clyde, W. C., … Hemming, S. (2012). Initiation of the Western Branch of the East African Rift coeval with the Eastern Branch. Nature Geoscience, 5, 289–294. https://doi.org/10.1038/ngeo1432
     [Google Scholar]
  44. Salman, G., & Abdula, I. (1995). Development of the Mozambique and Ruvuma sedimentary basins, offshore Mozambique. Sedimentary Geology, 96, 7–41. https://doi.org/10.1016/0037-0738(95)00125-R
     [Google Scholar]
  45. Sansom, P. (2017, November 7–9). A new stratigraphic model for Tanzania: Insights from deep water exploration. Presented at the Third EAGE Eastern Africa Petroleum Geoscience Forum. Maputo, Mozambique.
  46. Sansom, P. (2018). Hybrid turbidite‐contourite systems of the Tanzanian margin. Petroleum Geoscience, 24(3), 258–276. https://doi.org/10.1144/petgeo2018-044
     [Google Scholar]
  47. Schumm, S. A., Dumont, J. F., & Holbrook, J. M. (2000). Active tectonics and alluvial rivers (276 pp.). Cambridge, UK: Cambridge University Press.
     [Google Scholar]
  48. Scrutton, R. A. (1978). Davie fracture zone and the movement of Madagascar. Earth and Planetary Science Letters, 39, 84–88. https://doi.org/10.1016/0012-821X(78)90143-7
     [Google Scholar]
  49. Sepulchre, P., Ramstein, G., Fluteau, F., Schuster, M., Tiercelin, J.‐J., & Brunet, M. (2006). Tectonic uplift and Eastern Africa aridification. Science, 313, 1419–1423. https://doi.org/10.1126/science.1129158
     [Google Scholar]
  50. Sii, P., & Underhill, J. R. (2015). Role of punctuated subsidence and structural inversion in creating the East African Spice Islands. 77th EAGE Conference & Exhibition, IFEMA. Madrid, Spain.
     [Google Scholar]
  51. Stankiewicz, J., & de Wit, M. J. (2006). A proposed drainage evolution model for central Africa—Did the Congo flow east?Journal of African Earth Science, 44, 7–84. https://doi.org/10.1016/j.jafrearsci.2005.11.008
     [Google Scholar]
  52. van Aken, H. M., Ridderinkhof, H., & de Ruijter, W. P. M. (2004). North Atlantic deep water in the south‐western Indian Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 51, 755–776. https://doi.org/10.1016/j.dsr.2004.01.008
     [Google Scholar]
  53. Wade, B. S., Pearson, P. N., Berggren, W. A., & Pälike, H. (2011). Review and revision of Cenozoic tropical planktonic foraminiferal biostratigraphy and calibration to the Geomagnetic Polarity and Astronomical Time Scale. Earth Science Reviews, 104, 111–142. https://doi.org/10.1016/j.earscirev.2010.09.003
     [Google Scholar]
  54. Yang, Z., & Chen, W.‐P. (2010). Earthquakes along the East African Rift System: A multiscale, system‐wide perspective. Journal of Geophysical Research, 115, B12309. https://doi.org/10.1029/2009JB006779
     [Google Scholar]
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Impact of the East African Rift System on the routing of the deep‐water drainage network offshore Tanzania, western Indian Ocean
Basin Research 32, 789 (2020); https://doi.org/10.1111/bre.12398
/content/journals/10.1111/bre.12398
/content/journals/10.1111/bre.12398
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  • Article Type: Research Article
Keyword(s): Davie Ridge; East African Rift System; Indian Ocean; Sediment Routing System; Submarine Canyons; Tanzania

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