Shear wave velocities and anisotropy in the Barbados accretionary complex

Journal of Geophysical Research: Solid Earth

Volumn 105, Issue B12, 2000, Pages 28489-28508

  Peacock, Sheila ^a   Westbrook, Graham K ^a  

^a UNIVERSITY OF BIRMINGHAM   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

ACCRETIONARY PRISM; SEISMIC ANISOTROPY; SEISMIC VELOCITY; VELOCITY STRUCTURE;

BARBADOS;

EID: 0034474710     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: 10.1029/2000jb900350     Document Type: Article

References (38)

1. Brown, K. M., and B. Ransom, Porosity corrections for smectite-rich sediments: Impact on studies of compaction, fluid generation and tectonic history, Geology, 24, 843-846, 1996.
2. Brown, K. M., B. Bekins, D. N. Dewhurst, M. B. Clennell, and G. K. Westbrook, Heterogeneous hydrofracture development and accretionary fault dynamics, Geology, 22, 259-262, 1994.
3. Brückmann, W., K. Moran, and B. A. Housen, Directional properties of P-wave velocities and acoustic anisotropy in different structural domains of the Northern Barbados Ridge accretionary complex, Proc. ODP Sci. Results, 156, 115-123, 1997a.
4. Brückmann, W., K. Moran, and A. K. MacKillop, Permeability and consolidation characteristics from Hole 949B, northern Barbados Ridge, Proc. ODP Sci. Results, 156, 109-114, 1997b.
5. Capet, X., H. Chamley, C. Beck, and T. Holzapffel, Clay mineralogy of Sites 671 and 672, Barbados Ridge accretionary complex and Atlantic abyssal plain: Paleoenvironmental and diagenetic implications, Proc. Ocean Drill. Program Sci. Results, 110, 85-96, 1990.
6. Castagna, J. P., M. L. Batzle, and R. L. Eastwood, Relationships between compressional-wave and shear-wave velocities in clastic silicate rocks, Geophysics, 50, 571-581, 1985.
7. Crampin, S., Evaluation of anisotropy by shear-wave splitting, Geophysics, 50, 142-152, 1985.
8. Daley, P. F., and F. Hron, Reflection and transmission coefficients for seismic waves in ellipsoidally anisotropic media, Geophysics, 44, 27-38, 1979.
9. Dewhurst, D. N., M. B. Clennell, K. M. Brown, and G. K. Westbrook, Fabric and hydraulic conductivity of sheared clays, Géotechnique, 46, 761-768, 1996.
10. Dixon, T. H., F. Farina, C. DeMets, P. Jansma, P. Mann, and E. Calais, Relative motion between the Caribbean and North American plates and related boundary zone deformation from a decade of GPS observations, J. Geophys. Res., 103, 15,157-15,182, 1998.
11. Dolman, R., Physical properties derived from seismic modelling at the toe of the Barbados accretionary complex, Ph.D. thesis, Univ. of Birmingham, Birmingham, England, 2000.
12. Eberhart-Phillips, D., D. H. Han, and M. D. Zoback, Empirical relationships among seismic velocity, effective pressure, porosity and clay content in sandstone, Geophysics, 54, 82-89, 1989.
13. Fisher, A. T., G. Zwart, and ODP Leg 156 Shipboard Scientific Party, Relation between permeability and effective stress along a plate-boundary fault, Barbados accretionary complex, Geology, 24, 307-310, 1996.
14. Hornby, B. E., L. M. Schwartz, and J. A. Hudson, Anisotropic effective-medium modeling of the elastic properties of shales, Geophysics, 59, 1570-1583, 1994.
15. Hudson, J. A., A higher order approximation to the wave propagation constants for a cracked solid, Geophys. J. R. Astron. Soc., 87, 265-274, 1986.
16. Kirk, R. E., K. Robertson, R. B. Whitmarsh, and P. R. Miles, A technique for conducting seismic refraction experiments on the ocean bed using bottom shots, Mar. Geophys. Res., 13, 153-160, 1991.
17. Mascle, A., J. C. Moore, E. Taylor, and Shipboard Scientific Party, Proceedings of the Ocean Drilling Program, Initial Reports, 110, Ocean Drill. Program, College Station, Tex., 1988.
18. Moore, G. F., Z. Zhao, T. H. Shipley, N. Bangs, and J. C. Moore, Structural setting of the Leg 156 area, northern Barbados Ridge accretionary prism, Proc. Ocean Drill. Program Initial Rep., 156, 13-27, 1995.
19. Moore, G. F., Z. Zhao, and T. H. Shipley, Integration of VSP, logging and seismic data in the vicinity of the décollement, Northern Barbados Ridge Accretionary Prism, Proc. Ocean Drill. Program Sci. Results, 156, 255-262, 1997.
20. Moore, J. C., and H. Tobin, Estimated fluid pressures of the Barbados accretionary prism and adjacent sediments, Proc. Ocean Drill. Program Sci. Results, 156, 229-238, 1997.
21. Moore, J. C., A. Klaus, and ODP Leg 171A Shipboard Scientific Party, Consolidation patterns during initiation and evolution of a plate-boundary décollement zone: Northern Barbados accretionary prism, Geology, 26, 811-814, 1998a.
22. Moore, J. C., A. Klaus, and Shipboard Scientific Party, Proceedings of the Ocean Drilling Program, Initial Reports, 171 A, Ocean Drill. Program, College Station, Tex., 1998b.
23. Nolet, G., and L. M. Dorman, Waveform modeling of Scholte waves, Geophys. J. Int., 125, 385-396, 1996.
24. Peacock, S., G. K. Westbrook, and D. P. Graham, Seismic velocities in the northern Barbados Ridge accretionary complex, Site 949, Proc. Ocean Drill. Program Sci. Results, 156, 263-274, 1997.
25. Schreiner, A. E., L. M. Dorman, and L. D. Bibee, Shear wave velocity structure from interface waves from two deepwater sites in the Pacific Ocean, in Shear Waves in Marine Sediments, edited by J. M. Hovem, M. D. Richardson, and R. D. Stoll, pp. 231-238, Kluwer Acad., Norwell, Mass., 1991.
26. Shipboard Scientific Party, Site 671, Proc. Ocean Drill. Program Initial Rep., 110, 67-204, 1988.
27. Shipboard Scientific Party, Explanatory Notes, Proc. Ocean Drill. Program Initial Rep., 156, 77-202, 1995a.
28. Shipboard Scientific Party, Site 949, Proc. Ocean Drill. Program Initial Rep., 156, 193-296, 1995b.
29. Shipboard Scientific Party, Site 1046, Proc. Ocean Drill. Program Initial Rep., 171A, 55-76, 1998.
30. Shipley, T. H., G. F. Moore, N. L. Bangs, J. C. Moore, and P. L. Stoffa, Seismically inferred dilatancy distribution, northern Barbados Ridge décollement: Implication for fluid migration and fault strength, Geology, 22, 411-414, 1994.
31. Shipley, T. H., Y. Ogawa, P. Blum, and Shipboard Scientific Party, Proceedings of the Ocean Drilling Program, Initial Reports, 156, Ocean Drill. Program, College Station, Tex., 1995.
32. Tobin, H. J., J. C. Moore, and G. F. Moore, Laboratory measurement of velocity vs. effective stress in thrust faults of the Oregon accretionary prism: Implications for fault zone overpressure, Proc. Ocean Drill. Program Sci. Results, 146, 349-358, 1995.
33. Underwood, M. B., and X. Deng, Clay mineralogy and clay geochemistry in the vicinity of the décollement zone, northern Barbados ridge, Proc. Ocean Drill. Program Sci. Results, 156, 3-29, 1997.
34. Westbrook, G. K., The structure of the crust and upper mantle in the region of Barbados and the Lesser Antilles, Geophys. J. R. Astron. Soc., 43, 201-242, 1975.
35. Westbrook, G. K., and M. J. Smith, Long décollements and mud volcanoes: Evidence from the Barbados Ridge complex for the role of high pore-fluid pressure in the development of an accretionary complex, Geology, 11, 279-283, 1983.
36. Westbrook, G. K., J. W. Ladd, P. Buhl, N. B. Bangs, and G. J. Tiley, Cross section of an accretionary wedge: Barbados Ridge complex, Geology, 16, 631-635, 1988.
37. Wilkens, R., P. McLellan, K. Moran, J. Schoonmaker Tribble, E. Taylor, and E. Verduzco, Diagenesis and dewatering of clay-rich sediments, Barbados accretionary prism, Proc. ODP. Sci. Results, 110, 309-320, 1990.
38. Zatsepin, S. V., and S. Crampin, Modelling the compliance of crustal rock, I, Response of shear-wave splitting to differential stress, Geophys. J. Int., 129, 477-494, 1997.