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Origin and evolution of a splay fault in the Nankai accretionary wedge

Nature Geoscience volume 2, pages 648–652 (2009)Cite this article

Abstract

Subduction zones are often characterized by wedge-shaped sedimentary complexes—called accretionary prisms—that form when sediments are scraped off the subducting plate and added to the overriding plate. Large, landward-dipping thrust faults can cut through such a prism: these faults, known as ‘megasplay faults’1,2, originate near the top of the subducting plate and terminate at the shallow, landward edge of the prism1,3,4,5,6. Megasplay faults have been the subject of numerous geological and geophysical studies4,5,6,7,8,9,10,11,12,13,14,15, but their initiation and evolution through time remains poorly constrained. Here we combine seismic reflection data from the Nankai accretionary wedge with geological data collected by the Integrated Ocean Drilling Program (IODP) and find that the splay fault cutting this wedge initiated ∼1.95 Million years (Myr) ago in the lower part of the prism as an out-of-sequence thrust (OOST). After an initial phase of high activity, the movement along the fault slowed down, but uplift and reactivation of the fault resumed about 1.55 Myr ago. The alternating periods of high and low activity along the splay fault that we document hint at episodic changes in the mechanical stability of accretionary prisms.

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Figure 1: Geological setting of the Nankai accretionary wedge.
Figure 2: Data compilation across the shallow megasplay system.
Figure 3: IODP Sites C0004 and C0008; core data.
Figure 4: Summary diagram showing the splay-fault origin and evolution in the Nankai accretionary wedge.

References

  1. Fukao, Y. Tsunami earthquakes and subduction processes near deep-sea trenches. J. Geophys. Res. 84, 2303–2314 (1979).

    Article  Google Scholar 

  2. Tobin, H. J. & Kinoshita, M. NanTroSEIZE: The IODP Nankai trough seismogenic zone experiment. Sci. Drill. 2, 23–27 (2006).

    Article  Google Scholar 

  3. Plafker, G. Alaskan earthquake of 1964 and Chilean earthquake of 1960: Implications for arc tectonics. J. Geophys. Res. 77, 901–925 (1972).

    Article  Google Scholar 

  4. Park, J.-O., Tsuru, T., Kodaira, S., Cummins, P. R. & Kaneda, Y. Splay fault branching along the Nankai subduction zone. Science 297, 1157–1160 (2002).

    Article  Google Scholar 

  5. Moore, G. F. et al. Three-dimensional splay fault geometry and implications for tsunami generation. Science 318, 1128–1131 (2007).

    Article  Google Scholar 

  6. Collot, J. Y., Agudelo, W., Ribodetti, A. & Marcailou, B. Origin of a crustal splay fault and its relation to the seismogenic zone and underplating at the erosional north Ecuador—south Colombia oceanic margin. J. Geophys. Res. 113, B12102 (2008).

    Article  Google Scholar 

  7. Bangs, N. L. et al. Broad, weak regions of the Nankai Megathrust and implications for shallow coseismic slip. Earth Planet. Sci. Lett. 284, 44–49 (2009).

    Article  Google Scholar 

  8. Kikuchi, M., Nakamura, M. & Yoshikawa, K. Source rupture processes of the 1944 Tonankai earthquake and the 1945 Mikawa earthquake derived from low-gain seismograms. Earth Planets Space 55, 159–172 (2003).

    Article  Google Scholar 

  9. Baba, T., Cummins, P. R., Hori, T. & Kaneda, Y. High precision slip distribution of the 1944 Tonankai earthquake inferred from tsunami waveforms: Possible slip on a splay fault. Tectonophysics 426, 119–134 (2006).

    Article  Google Scholar 

  10. Tanioka, Y. & Satake, K. Detailed coseismic slip distribution of the 1944 Tonankai earthquake estimated from tsunami waveforms. Geophys. Res. Lett. 28, 1075–1078 (2001).

    Article  Google Scholar 

  11. Katsumi, K. Out-of-sequence thrust of an accretionary complex. Mem. Geol. Soc. Jpn 50, 131–146 (1998).

    Google Scholar 

  12. Kimura, G. et al. Transition of accretionary wedge structures around the up-dip limit of the seismogenic subduction zone. Earth Planet. Sci. Lett. 255, 471–484 (2007).

    Article  Google Scholar 

  13. Morley, C. K. Out-of-sequence thrusts. Tectonics 7, 539–561 (1988).

    Article  Google Scholar 

  14. Gutscher, M.-A., Kukowski, N., Malavieille, J. & Lallemand, S. Cyclical behavior of thrust wedges: Insights from high basal friction sandbox experiments. Geology 24, 135–138 (1996).

    Article  Google Scholar 

  15. Wang, K. & Hu, Y. Accretionary prisms in subduction earthquake cycles: The theory of dynamic Coulomb wedge. J. Geophys. Res. 111, B06410 (2006).

    Google Scholar 

  16. Lay, T. et al. The great Sumatra–Andaman earthquake of 26 December 2004. Science 308, 1127–1133 (2005).

    Article  Google Scholar 

  17. Ando, M. Source mechanisms and tectonic significance of historical earthquakes along the Nankai trough, Japan. Tectonophysics 27, 119–140 (1975).

    Article  Google Scholar 

  18. Kame, N., Rice, J. R. & Dmowska, R. Effects of prestress state and rupture velocity on dynamic fault branching. J. Geophys. Res. 108, B5-2265 (2003).

    Article  Google Scholar 

  19. Moore, G. F. et al. in Structural and Seismic Stratigraphic Framework of the NanTroSEIZE Stage 1 Transect: Proc. IODP 314/315/316 (eds Kinoshita, M. et al.) (Integrated Ocean Drilling Program Management International, 2009).

    Book  Google Scholar 

  20. Kinoshita, M. et al. (eds) Expedition 316 Scientists. Expedition 316 Site C0004: Proc. IODP 314/315/316 (Integrated Ocean Drilling Program Management International, 2009).

  21. Kinoshita, M. et al. (eds) Expedition 316 Scientists. Expedition 316 Site C0008: Proc. IODP 314/315/316 (Integrated Ocean Drilling Program Management International, 2009).

  22. Van Andel, T. H. Mesozoic/Cenozoic calcite compensation depth and the global distribution of calcareous sediments. Earth Planet. Sci. Lett. 26, 187–194 (1975).

    Article  Google Scholar 

  23. Seno, T., Stein, S. & Gripp, A. E. A model for the motion of the Philippine sea plate consistent with Nuvel-1 and geological data. J. Geophys. Res. 98, 17941–17948 (1993).

    Article  Google Scholar 

  24. Miyazaki, S. I. & Heki, K. Crustal velocity field of southwest Japan: Subduction and arc–arc collision. J. Geophys. Res. 106, 4305–4326 (2001).

    Article  Google Scholar 

  25. Kinoshita, M. et al. (eds) Expedition 315 Scientists. Expedition 315 Site C0002: Proc. IODP 314/315/316 (Integrated Ocean Drilling Program Management International, 2009).

  26. Kodaira, S. et al. Cyclic ridge subduction at an inter-plate locked zone off central Japan. Geophys. Res. Lett. 30, 1339 (2003).

    Article  Google Scholar 

  27. Park, J.-O., Moore, G. F., Tsuru, T., Kodaira, S. & Kaneda, Y. A subducted oceanic ridge influencing the Nankai megathrust earthquake rupture. Earth Planet. Sci. Lett. 217, 77–84 (2003).

    Article  Google Scholar 

  28. Bangs, N. L. B., Gulick, S. P. S. & Shipley, T. H. Seamount subduction erosion in the Nankai Trough and its potential impact on the seismogenic zone. Geology 34, 701–704 (2006).

    Article  Google Scholar 

  29. Screaton, E. J., Saffer, D., Henry, P. & Kunze, S. Porosity loss within the underthrust sediment of the Nankai accretionary complex: Implications for overpressures. Geology 30, 19–22 (2002).

    Article  Google Scholar 

  30. Saffer, D. & Bekins, B. A. Hydrologic controls on the morphology and mechanics of accretionary wedges. Geology 30, 271–274 (2002).

    Article  Google Scholar 

Download references

Acknowledgements

This research used samples and data provided by the Integrated Ocean Drilling Program (IODP). This work was supported by fellowship grants from the Swiss National Science Foundation (Grant No PBEZ2-118865) and the DFG-Research Centre/Cluster of Excellence ‘The Ocean in the Earth System’ (to M.S.), the US National Science Foundation to the University of Hawaii (G.M.) and the Japanese Ministry of Education, Culture, Science, Sports, and Technology to JAMSTEC.

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Authors and Affiliations

  1. MARUM, Centre for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany

    Michael Strasser & Achim J. Kopf

  2. Department of Geology and Geophysics, University of Hawaii, Honolulu, Hawaii 96822, USA

    Gregory F. Moore

  3. Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science Technology, Kanazawa-ku, Yokohama, Kanagawa 2360001, Japan

    Gregory F. Moore, Gaku Kimura & Jin-Oh Park

  4. Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan

    Gaku Kimura

  5. IFM-GEOMAR, The Leibniz-Institute of Marine Sciences at University of Kiel, 24148 Kiel, Germany

    Yujin Kitamura

  6. Geosiences & Environment Cergy, University of Cergy-Pontoise, 95031 Cergy-Pontoise, France

    Siegfried Lallemant

  7. Ocean Research Institute, The University of Tokyo, Tokyo 164-8639, Japan

    Jin-Oh Park

  8. Department of Geology, University of Florida, Gainesville, Florida 32611, USA

    Elizabeth J. Screaton

  9. School of Marine Geosciences, China University of Geosciences, Beijing 100083, China

    Xin Su

  10. Department of Geological Sciences, University of Missouri, Columbia, Missouri 65211, USA

    Michael B. Underwood

  11. Department of Earth and Planetary Sciences, University of California, Santa Cruz, California 95064, USA

    Xixi Zhao

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  1. Michael Strasser
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Contributions

M.S., paper writing, lithostratigraphy, data integration, conceptual model; G.M., paper writing, seismic stratigraphy, conceptual model, project planning; G.K., E.J.S., project planning, data integration, J.-O.P., seismic data processing, conceptual model; A.J.K., S.L., conceptual model; Y.K., X.Z., magnetostratigraphy, X.S., biostratigraphy, M.B.U., lithostratigraphy, mineralogy, data integration.

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Correspondence to Michael Strasser.

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Strasser, M., Moore, G., Kimura, G. et al. Origin and evolution of a splay fault in the Nankai accretionary wedge. Nature Geosci 2, 648–652 (2009). https://doi.org/10.1038/ngeo609

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