Discontinuous low-velocity zones in southern Tibet question the viability of the channel flow model

Geological Society Special Publication

Volumn 353, Issue , 2011, Pages 99-108

  Hétenyi, György ^a,b   Vergne, Jérôme ^b,c   Bollinger, Laurent ^d   Cattin, Rodolphe ^b,e  

^a ETH ZURICH   (Switzerland)

^b LABORATOIRE DE GÉOLOGIE   (France)

^c UNIVERSITÉ DE STRASBOURG EOST   (France)

^d CEA DIF   (France)

^e UNIVERSITÉ MONTPELLIER 2   (France)

Author keywords

[No Author keywords available]

Indexed keywords

AMPLITUDE; CHANNEL FLOW; GRABEN; LOW VELOCITY ZONE; NUMERICAL MODEL; PARTIAL MELTING; SEISMIC MIGRATION; SEISMOLOGY; SPATIAL DISTRIBUTION;

CHINA; XIZANG;

EID: 79953085229     PISSN: 03058719     EISSN: None     Source Type: Book Series    
DOI: 10.1144/SP353.6     Document Type: Article

References (46)

1. Ammon, C. J., Randall, G. E. & Zandt, G. 1990. On the non-uniqueness of receiver function inversions. Journal of Geophysical Research, 95, 15 303-15 318.
2. Armijo, R., Tapponnier, P., Mercier, J. L. & Han, T. L. 1986. Quaternary extension in southern Tibet: field observations and tectonic implications. Journal of Geophysical Research, 91, 13803-13872.
3. Avouac, J.-P. & Tapponnier, P. 1993. Kinematic model of active deformation in Central Asia. Geophysics Research Letters, 20, 895-898.
4. Beaumont, C., Jamieson, R. A., Nguyen, M. H. & Lee, B. 2001. Himalayan tectonics explained by extrusion of a low-viscosity crustal channel coupled to focused surface denudation. Nature, 414, 738-742.
5. Brown, L. D., Zhao, W. J. et al. 1996. Bright spots, structure, and magmatism in southern Tibet from INDEPTH seismic reflection profiling. Science, 274, 1688-1690.
6. Chen, L., Booker, J. R., Jones, A. G., Wu, N., Unsworth, M. J., We i, W. & Ta n, H. 1996. Electrically conductive crust in Southern Tibet from INDEPTH magnetotelluric surveying. Science, 274, 1694-1695.
7. Clark, M. K. & Royden, L. H. 2000. Topographic ooze: building of Tibet by lower crustal flow. Geology, 28, 703-706.
8. Clark, M. K., Bush, J. W. M. & Royden, L. H. 2005. Dynamic topography produced by lower crustal flow against rheological strength heterogeneities bordering the Tibetan Plateau. Geophysical Journal International, 162, 575-590.
9. Dueker, K. & Sheehan, A. 1997. Mantle discontinuity structure from midpoint stacks of converted P to S waves across the Yellowstone hotspot track. Journal of Geophysical Research, 102, 8313-8327.
10. England, P. & Molnar, P. 1997. Active deformation of Asia: from kinematics to dynamics. Science, 278, 647-650.
11. Haines, S. S., Klemperer, S. L. et al. 2003. INDEPTH III seismic data: from surface observations to deep crustal processes in Tibet. Tectonics, 22, 1001, doi: 10.1029/2001TC001305, 2003.
12. Hetényi, G. 2007. Evolution of deformation of the Himalayan prism: from imaging to modelling. PhD thesis, École Normale Supérieure, Université Paris-Sud XI.
13. Hetényi, G., Cattin, R., Brunet, F., Vergne, J., Bollinger, L., Nábêlek, J. L. & Diament, M. 2007. Density distribution of the India plate beneath the Tibetan Plateau: geophysical and petrological constraints on the kinetics of lower-crustal eclogitization. Earth and Planetary Science Letters, 264, 226-244, doi: 10.1016/j.epsl.2007.09.036.
14. Hetényi, G., Cattin, R. & Vergne, J. 2010. Geodynamics of Tibet and the Himalayas - Geophysical advances from imaging and modelling. LAP Lambert Academy Publisher, Saarbrucken. ISBN 978-3-8383-2353-4, 1-408.
15. Houseman, G. & England, P. 1993. Crustal thickening v. lateral expulsion in the Indian-Asian continental collision. Journal of Geophysical Research, 98, 12233-12249.
16. Hyndman, R. D. & Shearer, P. M. 1989. Water in the lower continental-crust: modeling magnetotelluric and seismic-reflection results. Geophysical Journal International, 98, 343-365.
17. Jamieson, R. A., Beaumont, C., Medvedev, S. & Nguyen, M. H. 2004. Crustal channel flows: 2. Numerical models with implications for metamorphism in the Himalayan-Tibetan orogen. Journal of Geophysical Research, 109, B06407.
18. Kennett, B. L. N. & Engdahl, E. R. 1991. Travel-times for global earthquake location and phase identification. Geophysical Journal International, 105, 429-465.
19. Kind, R., Ni, J. et al. 1996. Evidence from earthquake data for partially molten crustal layer in southern Tibet. Science, 274, 1692-1694.
20. Langston, C. 1977. Corvallis, oregon, crustal and upper mantle receiver structure from teleseismic P-waves and S-waves. Bulletin of the Seismological Society of America, 67, 713-724.
21. Li, S. H., Unsworth, M. J., Booker, J. R., Wei, W. B., Tan, H. D. & Jones, A. G. 2003. Partial melt or aqueous fluid in the mid-crust of southern Tibet? Constraints from INDEPTH magnetotelluric data. Geophysical Journal International, 153, 289-304.
22. Makovsky, Y. & Klemperer, S. L. 1999. Measuring the seismic properties of the Tibetan bright spots: evidence for free aqueous fluids in the Tibetan middle crust. Journal of Geophysical Research, 104, 10795-10825.
23. Makovsky, Y., Klemperer, S. L., Ratschbacher, L., Brown, L. D., Li, M., Zhao, W. J. & Meng, F. L. 1996. INDEPTH wide-angle reflection observation of P-wave-to-S-wave conversion from crustal bright spots in Tibet. Science, 274, 1690-1691.
24. Masek, J. G., Isacks, B. L., Gubbels, T. L., Fielding, E. J. & Browaeys, J. 1994. Erosion and tectonics at the margins of continental plateaus. Journal of Geophysical Research, 99, 13941-13956.
25. Mitra, S., Priestley, K., Bhattacharyya, A. K. & Gaur, V. K. 2005. Crustal structure and earthquake focal depths beneath northeastern India and southern Tibet. Geophysical Journal International, 160, 227-248.
26. Molnar, P. & Stock, J. M. 2009. Slowing of India's convergence with Eurasia since 20 Ma and its implications for Tibetan mantle dynamics. Tectonics, 28, TC3001, doi: 10.1029/2008TC002271.
27. Molnar, P. & Tapponnier, P. 1975. Cenozoic tectonics of Asia - effects of a continental collision. Science, 189, 419-426.
28. Molnar, P., Fitch, T. J. & Wu, F. T. 1973. Fault plane solutions of shallow earthquakes and contemporary tectonics in Asia. Earth and Planetary Science Letters, 19, 101-112.
29. Nábělek,J.,Hetényi,G. et al.&THEHI-CLIMBTEAM 2009. Underplating in the Himalaya-Tibet collision zone revealed by the Hi-CLIMB experiment. Science, 325, 1371-1374, doi: 10.1126/science.1167719.
30. Nelson, K. D., Zhao, W. J. et al. 1996. Partially molten middle crust beneath southern Tibet: synthesis of project INDEPTH results. Science, 274, 1684-1688.
31. Patriat, P. & Achache, J. 1984. India-Eurasia collision chronology has implications for crustal shortening and driving mechanism of plates. Nature, 311, 615-621.
32. Pollack, H. N., Hurter, S. J. & Johnson, J. R. 1993. Heat flow from the Earth's interior: analysis of the global data set. Reviews of Geophysics, 31, 267-280.
33. Royden, L. 1996. Coupling and decoupling of crust and mantle in convergent orogens: implications for strain partitioning in the crust. Journal of Geophysical Research, 101, 17679-17705.
34. Sambridge, M. 1999. Geophysical inversion with a neighbourhood algorithm - I. Searching a parameter space. Geophysical Journal International, 138, 479-494.
35. Shen, F., Royden, L. H. & Burchfiel, B. C. 2001. Large-scale crustal deformation of the Tibetan Plateau. Journal of Geophysical Research, 106, 6793-6816.
36. Thatcher, W. 2007. Microplate model for the present-day deformation of Tibet. Journal of Geophysical Research, 112, B01401, doi: 10.1029/2005JB004244.
37. Unsworth, M. J., Jones, A. G., Wei, W., Marquis, G., Gokarn, S. G. & Spratt, J. E. 2005. Crustal rheology of the Himalaya and southern Tibet inferred from magnetotelluric data. Nature, 438, 78-81.
38. Watanabe, T. 1993. Effects of water and melt on seismic velocities and their application to characterization of seismic reflectors. Geophysical Research Letters, 20, 2933-2936.
39. Wei, W. B., Unsworth, M. et al. 2001. Detection of widespread fluids in the Tibetan crust by magnetotelluric studies. Science, 292, 716-718.
40. Wessel, P. & Smith, W. 1991. Free software helps map and display data. EoS Transactions American Geophysical Union, 72, 441 and 445-446.
41. Wittlinger, G., Farra, V., Hetényi, G., Vergne, J. & Nábělek, J. 2009. Seismic velocities in Southern Tibet lower crust. A receiver function approach for eclogite detection. Geophysical Journal International, 177, 1037-1049, doi: 10.1111/j.1365-246X.2008.04084.x.
42. Yin, A. 2005. Cenozoic tectonic evolution of the Himalayan orogen as constrained by along-strike variation of structural geometry, exhumation history, and foreland sedimentation. Earth-Science Reviews, 76, 1-131.
43. Yuan, X., Ni, J., Kind, R., Mechie, J. & Sandvol, E. 1997. Lithospheric and upper mantle structure of southern Tibet from a seismological passive source experiment. Journal of Geophysical Research, 102, 27491-27500.
44. Zandt, G. & Ammon, C. J. 1995. Continental crust composition constrained by measurements of crustal Poisson's ration. Nature, 374, 152-154.
45. Zhang, P. Z., Shen, Z., Wang, M., Gan, W. J., Burgmann, R. & Molnar, P. 2004. Continuous deformation of the Tibetan Plateau from global positioning system data. Geology, 32, 809-812.
46. Zhao, W. J., Nelson, K. D. & PROJECT INDEPTH TEAM. 1993. Deep seismic-reflection evidence for continental underthrusting beneath southern Tibet. Nature, 366, 557-559.