Advertisement

Records of Submarine Landslides in Subduction Input Recovered by IODP Expedition 322, Nankai Trough, Japan

  • Yujin KitamuraEmail author
  • Yuzuru Yamamoto
Conference paper
Part of the Advances in Natural and Technological Hazards Research book series (NTHR, volume 31)

Abstract

Submarine landslides in the active continental margin are the earliest tectonically-driven deformation for sediments underthrusting to the plate boundary. Asymmetric bathymetry across trenches results in the common occurrence of the large scarps related to the mass transport on the steeper accretionary prism surface. Gently tilted oceanic plates off trenches are, however, also sufficient for sliding. Within the framework of the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) of the Integrated Ocean Drilling Program (IODP), we drilled two sites (Sites C0011 and C0012) in the subduction input sediments and recovered samples with a specific feature of sliding in a very shallow depth. This feature is composed of fine-grained gouge-like material accompanied by sheared planar fabric. It is typically crosscut by bioturbation, which indicates its formation in a quite shallow depth. In the middle part of Hole C0012A, the bedding tilts significantly compared to the bedding in the hole above and below. This localized inclination indicates block sliding of the sediments. These observations suggest that the surface of the incoming oceanic plate into the Nankai Trough is quite active, as represented by sub-seafloor slidings in different scale. Our observation shows that the input sediments are already deformed before reaching the trench. The fact of the earlier deformation prior to subduction is important for understanding further deformation processes along plate boundaries in subduction zones.

Keywords

D/V Chikyu NanTroSEIZE Submarine landslide Subduction input 

Notes

Acknowledgments

We are grateful to the Expedition 322 Scientists and onboard laboratory technicians from Marine Works Japan Co. Ltd. for their hard work and discussions with us during the expedition. We would especially like to thank the co-chiefs, Mike Underwood and Sanny Saito and the Expedition Project Manager, Yusuke Kubo, for their dedication to the success of the expedition and Hajime Naruse for his onboard discussions and suggestions. The shipboard paleomagnetists, Hirokuni Oda, Xixi Zhao and Tomohiro Yamamoto, kindly provided paleomagnetic data for structural reconstruction. This research used samples and data provided by the Integrated Ocean Drilling Program (IODP). This work was partially supported by KAKENHI 19GS0211 and 21107001. We thank Gaku Kimura, Yoshitaka Hashimoto and the guest editor Yasuhiro Yamada for their thoughtful and careful reviews which have led to an improved version of this manuscript.

References

  1. Ando M (1975) Source mechanisms and tectonic significance of historical earthquakes along Nankai Trough, Japan. Tectonophysics 27:119–140CrossRefGoogle Scholar
  2. Expedition 333 Scientists (2011) NanTroSEIZE Stage 2: subduction inputs 2 and heat flow. IODP Preliminary Report 333, doi:10.2204/iodp.pr.333.2011Google Scholar
  3. Gennesseaux M, Mauffret A, Pautot G (1980) Submarine landslides on the continental-slope near Nice and the breaking of submarine cables in the Ligurian Sea (western Mediterranean). Comptes Rendus Hebdomadaires Des Seances De L’Academie Des Sciences Serie D 290:959–962Google Scholar
  4. Hampton MA, Lee HJ, Locat J (1996) Submarine landslides. Rev Geophys 34:33–59CrossRefGoogle Scholar
  5. Kimura G, Kitamura Y, Hashimoto Y, Yamaguchi A, Shibata T, Ujiie K, Okamoto S (2007) Transition of accretionary wedge structures around the up-dip limit of the seismogenic subduction zone. Earth and Planet Sci Lett 255:471–484CrossRefGoogle Scholar
  6. Kobayashi K (1995) Role of subducted lithospheric slab in uplift and subsidence of the northwestern Pacific margins. Mar Geol 127:119–144CrossRefGoogle Scholar
  7. Maltman AJ, Byrne T, Karig DE, Lallemant S, Knipe R, Prior D (1993) In: Hill IA, Taira, A., Firth, J.V., et al. (eds) Proceeding of the ODP, Scientific Results (Ocean Drilling Program), College Station p. 123–133Google Scholar
  8. Moore GF, Taira A, Klaus A, et al. (2001) Proceeding of the ODP, initial reports (Ocean Drilling Program), College StationGoogle Scholar
  9. Okino K, Shimakawa Y, Nagaoka S (1994) Evolution of the Shikoku basin. J Geomagn Geoelectr 46:463–479CrossRefGoogle Scholar
  10. Prior DB, Coleman JM (1978) Disintegrating retrogressive landslides on very-low-angle subaqueous slopes, Mississippi Delta. Mar Geotechnol 3:37–60CrossRefGoogle Scholar
  11. Saito S, Underwood MB, Kubo Y, Expedition 333 Scientists (2010) Proceeding of the IODP, Integrated Ocean Drilling Program management international, TokyoGoogle Scholar
  12. Talling PJ, Wynn RB, Masson DG, Frenz M, Cronin BT, Schiebel R, Akhmetzhanov AM, Dallmeier-Tiessen S, Benetti S, Weaver PPE, Georgiopoulou A, Zuhlsdorff C, Amy LA (2007) Onset of submarine debris flow deposition far from original giant landslide. Nature. doi: 10.1038/nature06313
  13. Teal LR, Bulling MT, Parker ER, Solan M (2008) Global patterns of bioturbation intensity and mixed depth of marine soft sediments. Aquatic Biology 2:207–218Google Scholar
  14. Tobin HJ, Kinoshita M (2006) Investigations of seismogenesis at the Nankai Trough, Japan. IODP Scientific Prospectus, NanTroSEIZE Stage 1:doi:10.2204/iodp.sp.nantroseize1.2006Google Scholar
  15. Ujiie K, Maltman AJ, Sanchez-Gomez M (2004) Origin of deformation bands in argillaceous sediments at the toe of the Nankai accretionary prism, southwest Japan. J Struct Geol 26:221–231CrossRefGoogle Scholar
  16. Yamada Y, Yamashita Y, Yamamoto Y (2010) Submarine landslides at subduction margins: insights from physical models. Tectonophysics. doi: 10.1016/j.tecto.2009.09.007
  17. Yamamoto Y, Mukoyoshi H, Ogawa Y (2005) Structural characteristics of an on land shallowly buried accretionary prism: rapidly uplifted Neogene accreted sediments on the Miura-Boso Peninsula, central Japan. Tectonics. doi: 1029/2005TC001823
  18. Yamamoto Y, Nidaira M, Ohta Y, Ogawa Y (2009) Formation of chaotic rock units during primary accretion processes: examples from the Miura-Boso accretionary complex, central Japan. Island Arc. doi: 10.1111/j.1440-1738.2009.00676.x
  19. Yamazaki T, Okamura Y (1989) Subducting seamounts and deformation of overriding forearc wedges around Japan. Tectonophysics 160:207–229CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Institute for Research on Earth EvolutionJapan Agency for Marine-Earth Science and TechnologyYokosukaJapan
  2. 2.Institute for Research on Earth EvolutionJapan Agency for Marine-Earth Science and TechnologyYokohamaJapan

Personalised recommendations