Genesis of a new slab tear fault in the Indo-Australian plate, offshore northern Sumatra, Indian ocean

详细信息    查看全文

• 作者：Basab Mukhopadhyay (1)
  Sujit Dasgupta (2)
  
• 关键词：Slab ; tear fault ; New tear fault (NTF) ; Rupture ; Intra ; plate Oceanic environment ; Northern Sumatra ; 2012 Sumatra Earthquake (M 8.6) ; 2004 Great Sumatra Earthquake (M 9.2)
• 刊名：Journal of the Geological Society of India
• 出版年：2014
• 出版时间：May 2014
• 年：2014
• 卷：83
• 期：5
• 页码：493-500
• 全文大小：
• 参考文献：1. Applegate, J.D.R., Walker, J.D. and Hodges, K.V. (1992) Late Cretaceous extensional unroofing in the Funeral Mountains metamorphic core complex, California. Geology, v.20, no.6, pp.519-22. 10.1130/0091-7613(1992)020<0519:LCEUIT>2.3.CO;2" target="_blank" title="It opens in new window">CrossRef
  2. Curray, J.R., Moore, D.G., Lawver, L.A., Emmel, F.J., Raitt, R. W., Henry, M. and Kieckhefer, R. (1979) Tectonics of the Andaman Sea and Burma, / In: J. Watkins, L. Montadert, P.W. Dickerson (Eds.), Geological and Geophysical Investigations of Continental Margins. Amer. Assoc. Petrol. Geol. Mem., v.29, pp.189-98.
  3. Dasgupta, S. and Mukhopadhayay, M. , (1993) Seismicity and plate deformation below the Andaman arc. Tectonophysics, v.225, pp.529-42. 10.1016/0040-1951(93)90314-A" target="_blank" title="It opens in new window">CrossRef
  4. Dasgupta, S. and Nandy, D.R. (1995) Geological framework of the Indo-Burmese convergent margin with special reference to ophiolite emplacement. Indian Jour. Geol., v.67, pp.110-25.
  5. Dasgupta, S., Mukhopadhyay, M., Bhattacharya, A. and Jana, T. K. (2003) The geometry of the Burmese-Andaman subducting lithosphere. Jour. Seismo., v.7, pp.155-74. 10.1023/A:1023520105384" target="_blank" title="It opens in new window">CrossRef
  6. Delescluse, M., Chamot-rooke, N., Cattin, R., Fleitout, L., Trubienko, O. and Vigny, C. (2012) April 2012 intra-oceanic seismicity off Sumatra boosted by the Banda-Aceh megathrust. Nature, doi:10.1038/nature11520.
  7. Duputel, Z., Kanamori, H., Tsai, V. C., Rivera, L., Meng, L., Ampuero, J-P. and Stock, J. M. (2012) The 2012 Sumatra great earthquake sequence. Earth Planet. Sci. Lett., v.351-52, pp.247-57. 10.1016/j.epsl.2012.07.017" target="_blank" title="It opens in new window">CrossRef
  8. Engdahl, E.R., Villasen?r, A., Deshon, H.R. and Thurber, C.H. (2007) Teleseismic Relocation and Assessment of Seismicity (1918-005) in the Region of the 2004 / Mw 9.0 Sumatra-Andaman and 2005 / Mw 8.6 Nias Island Great Earthquakes. Bull. Seismo.Soc. Amer., v.97(1A), pp.S43–S61, doi: 10.1785/0120050614. 10.1785/0120050614" target="_blank" title="It opens in new window">CrossRef
  9. Franke, D., Schnabel, M., Ladage, S., Tappin, D.R., Neben, S., Djajadihdja, Y.S., MüLLER, C., Kopp, H. and Gaedicke, C. (2008) The great Sumatra-Andaman earthquakes -Imaging the boundary between the ruptures of the great 2004 and 2005 earthquakes. Earth Planet. Sci. Lett., v.269, pp.118-30. 10.1016/j.epsl.2008.01.047" target="_blank" title="It opens in new window">CrossRef
  10. Gasparon, M., Rosenbaum, G., Wijbrans, J. and Manetti, P. (2009) The transition from subduction arc to slab tearing: Evidence from Capraia Island, northern Tyrrhenian Sea. Jour. Geodyna, v.47, pp.30-8. 10.1016/j.jog.2008.06.004" target="_blank" title="It opens in new window">CrossRef
  11. Govers, R. and Wortel, M.J.R. (2005) Lithosphere tearing at STEP faults: Response to edges of subduction zones. Earth Planet. Sci. Lett., v.236, pp.505-23. 10.1016/j.epsl.2005.03.022" target="_blank" title="It opens in new window">CrossRef
  12. Hamilton, W. (1979) Tectonics of Indonesian Region. USGS Professional Paper no 1078, 345 p.
  13. Ishii, M., Kiser, E. and Geist, E.L. (2013) Mw 8.6 Sumatran earthquake of 11 April 2012: Rare seaward expression of oblique subduction. Geology, v.41(3), pp.319-22. 10.1130/G33783.1" target="_blank" title="It opens in new window">CrossRef
  14. Maurin, T. and Rangin, C. (2009) Impact of the 90°E ridge at the Indo-Burmese subduction zone imaged from deep seismic reflection data. Marine Geol., v.266(1-), pp.143-55. 10.1016/j.margeo.2009.07.015" target="_blank" title="It opens in new window">CrossRef
  15. Mcguire, J.J. and Beroza, G.C. (2012) A Rogue Earthquake Off Sumatra. Science, v.336, pp. 1118, DOI: 10.1126/science.1223983. 10.1126/science.1223983" target="_blank" title="It opens in new window">CrossRef
  16. Meng, L., Ampuero. J-P., Stock, J., Duputel, Z., Luo, Y. and Tsai, V.C. (2012) Earthquake in a Maze: Compressional Rupture Branching During the 2012 / M _w 8.6 Sumatra Earthquake. Science, v.337, pp. 724-26, DOI: 10.1126/science.1224030. 10.1126/science.1224030" target="_blank" title="It opens in new window">CrossRef
  17. Mitchell, A.H.G. (1985) Collision-related fore-arc and back-arc evolution of the Northern Sunda Arc. Tectonophysics, v.116, pp.323-34. 10.1016/0040-1951(85)90213-6" target="_blank" title="It opens in new window">CrossRef
  18. Mukhopadhyay, B., Acharyya, A., Bhattacharya, A., Dasgupta, S. and Sengupta, S.R. (2009) Revisiting the Andaman subduction lithosphere following the 26 December 2004 Sumatra earthquake. Indian Jour. Geosciences, v.63(1), pp.1-0.
  19. Pollitz, F.F., Stein, R.S., Sevilgen, V. and Bürgmann, R. (2012) The 11 April 2012 east Indian Ocean earthquake triggered large aftershocks worldwide. Nature, doi:10.1038/nature11504.
  20. Rosenbaum, G., Gasparon, M., Lucente, F.P., Peccerillo, A. and Miller, M.S. (2008) Kinematics of slab tear faults during subduction segmentation and implications for Italian magmatism. Tectonics, v.27, pp.TC2008, doi:10.1029/2007TC002143. 10.1029/2007TC002143" target="_blank" title="It opens in new window">CrossRef
  21. Satriano, C., Kiraly, E., Bernard, P. and Vilotte J.P. (2012) The 2012 Mw 8.6 Sumatra earthquake: Evidence of westward sequential seismic ruptures associated to the reactivation of a N-S ocean fabric. Geophys. Res. Lett., v.39, pp. L15302, doi:10.1029/2012GL052387. 10.1029/2012GL052387" target="_blank" title="It opens in new window">CrossRef
  22. Schellart, W.P., Lister, G.S. and Jessell, M.W. (2002) Analogue modeling of arc and backarc deformation in the New Hebrides Arc and North Fiji Basin. Geology, v.30, pp.311-14. 10.1130/0091-7613(2002)030<0311:AMOAAB>2.0.CO;2" target="_blank" title="It opens in new window">CrossRef
  23. Simons, W.J.F., Socquet, A., Vigny, C., Ambrosius, B.A.C., HAJI Abu, S., Promthong, C., Subraya, C., Sarsito, D.A., Matheussen, S., Morgan, P. and Spakman, W. (2007) A Decade of GPS In Southeast Asia: Resolving Sundaland Motion and boundaries. Journal of Geophysical Research, v.112, doi:10.1029/2005JB003868
  24. Sieh, K., Bock, Y. and Rais, J. (1991) Neotectonic and paleoseismic studies in west and north Sumatra. Eos Trans AGU, v.72(44), pp.460.
  25. Sieh, K. and Natawidjaja, D. (2000) Neotectonics of the Sumatran fault, Indonesia. Jour. Geophys. Res., v.105, pp.28295-8326. 10.1029/2000JB900120" target="_blank" title="It opens in new window">CrossRef
  26. Simoes, M., Avouac, J.P., Cattin, R. and Henry, P. (2004) The Sumatra subduction zone: a case for a locked fault zone extending into the mantle. Jour. Geophys. Res., v.109, pp. B10402, doi:10.1029/2003JB002958. 10.1029/2003JB002958" target="_blank" title="It opens in new window">CrossRef
  27. Smith, W.H.F. and Sandwell, D.T. (1997) Global seafloor topography from satellite altimetry and ship depth soundings. Science, v.277, pp.1957-962.
  28. Socquet, A., Vigny, C., Chamot-rooke, N., Simons, W., Rangin, C. and Ambrosius, B. (2006) India and Sunda plates motion and deformation along their boundary in Myanmar determined by GPS. Jour. Geophys. Res., v.111, pp. B05406, doi:10.1029/2005JB003877.
  29. Stork, A.L., Selby, N.D., Heyburn, R. and Searle, M.P. (2008) Accurate Relative Earthquake Hypocenters Reveal Structure of the Burma Subduction Zone. Bull. Seismo. Soc. Amer., v.98, pp.2815-827. 10.1785/0120080088" target="_blank" title="It opens in new window">CrossRef
  30. Subrahmanyam, C., Gireesh, R., Shyamchand, K.A., Raju, K. and Gopala Rao, D. (2008) Geophysical characteristics of the ninety east ridge-Andaman Island arc/trench convergent zone. Earth Planet. Sci. Lett., v.266(1-), pp.29-5. 10.1016/j.epsl.2007.10.016" target="_blank" title="It opens in new window">CrossRef
  31. Vigny, C., Socquet, A., Rangin, C., Chamot-rooke, N., Pubellier, M., Bouin, M.N., Bertrand, G. and Becker, M. (2003) Presentday crustal deformation around Sagaing fault, Myanmar. Jour. Geophys. Res., v.108(B11), pp.2533, doi:10.1029/2002JB001999. 10.1029/2002JB001999" target="_blank" title="It opens in new window">CrossRef
  32. Yue, H., Lay, T. and Koper, K.D. (2012) En échelon and orthogonal fault ruptures of the 11 April 2012 great intraplate earthquakes. Nature, doi:10.1038/nature11492.
  
• 作者单位：Basab Mukhopadhyay (1)
  Sujit Dasgupta (2)
  
  1. Geological Survey of India, 27 J. L. Nehru Road, Kolkata, 700016, India
  2. Ex. Geological Survey of India, 27 J. L. Nehru Road, Kolkata, 700016, India
  
• ISSN：0974-6889

文摘

Following the December 2004 and March 2005 major shallow foci inter-plate earthquakes in the north Sumatra region, a slab-tear fault located within the subducting Indian plate ruptured across the West Sunda Trench (WST) within the marginal intra-plate region. Trend, length and movement pattern of this New Tear Fault (NTF) segment is almost identical to another such slab-tear fault mapped previously by Hamilton (1979), located around 160 km south of NTF. Seismic activity along the NTF remained quasi-stable till the end of the year 2011, when an earthquake of magnitude 7.2 occurred on 10.01.2012 just at the tip of NTF, only around ?00 km within the intra-plate domain west of WST. The NTF rupture propagated further towards SSW with the generation of two more large earthquakes on 11.04.2012. The foreshock (10.01.12; M7.2) -mainshock (11.04.12; M 8.6) -aftershock (11.04.12; M 8.2) sequence along with numerous smaller magnitude aftershocks unmistakably define the extension of NTF, a slab-tear fault that results tectonic segmentation of the convergent plate margin. Within the intra-plate domain most earthquakes display consistent left-lateral strike slip mechanism along NNE trending fault plane.