Seismological evidence for tearing of the Pacific plate at the northern termination of the Tonga subduction zone

Geology

Volumn 26, Issue 7, 1998, Pages 659-662

  Millen, David W ^a   Hamburger, Michael W ^a  

^a INDIANA UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

GEOLOGY;

OCEANIC LITHOSPHERE; PACIFIC PLATES; PLATE CONVERGENCE; SOURCE MECHANISMS; SUBDUCTION ZONES; VERTICAL PLANE; INTERMEDIATE DEPTHS;

EARTHQUAKES;

PACIFIC PLATE; PLATE TECTONICS; SEISMOLOGY; SUBDUCTION ZONE; DIP-SLIP FAULT; EARTHQUAKE; OCEANIC LITHOSPHERE; PLATE CONVERGENCE; SEISMICITY;

PACIFIC OCEAN; TONGA;

EID: 84874960167     PISSN: 00917613     EISSN: None     Source Type: Journal    
DOI: 10.1130/0091-7613(1998)026<0659:SEFTOT>2.3.CO;2     Document Type: Article

References (21)

1. Abe, K., 1981, Magnitudes of large shallow earthquakes from 1904 to 1980: Physics of the Earth and Planetary Interiors, v. 27, p. 72-92.
2. Bevis, M., Taylor, F. W., Schultz, B. E., Recy, J., Isacks, B. L., Helu, S., Singh, R., Kendrick, E., Stowell, J., Taylor, B., and Calmant, S., 1995, Geodetic observations of very rapid convergence and back-arc extension at the Tonga arc: Nature, v. 374, p. 249-251.
3. Brocher, T. M., 1985, On the age progression of the seamounts west of the Samoan Islands, SW Pacific, in Brocher, T. M., ed., Investigations of the Northern Melanesian Borderland: CircumPacific Council for Energy and Mineral Resources Earth Science Series 3, p. 173-185.
4. Chen, T., and Forsyth, D. W., 1978, A detailed study of two earthquakes seaward of the Tonga trench: Implications form mechanical behavior of the oceanic lithosphere: Journal of Geophysical Research, v. 83, p. 4995-5003.
5. DeMets, C., Gordon, R. G., Argus, D. F., and Stein, S., 1990, Current plate motions: Geophysical Journal International, v. 101, p. 425-478.
6. Dziewonski, A. M., Chou, T.-A., and Woodhouse, J. H., 1981, Determination of earthquake source parameters from waveform data for studies of global and regional seismicity: Journal of Geophysical Research, v. 86, p. 2825-2852.
7. Dziewonski, A. M., Ekstrom, G. and Salganik, M. P., 1996, Centroid-moment tensor solutions for April-June 1995: Physics of the Earth and Planetary Interiors, v. 96, p. 1-13.
8. Forsyth, D. W., 1975, Fault plane solutions and tectonics of the South Atlantic and Scotia Sea: Journal of Geophysical Research, v. 80, p. 1429-1443.
9. Frohlich, C., and Apperson, K. D., 1992, Earthquake focal mechanisms, moment tensors, and the consistency of seismic activity near plate boundaries: Tectonics, v. 11, p. 279-296.
10. Hamburger, M. W., and Isacks, B. L., 1988, Diffuse back-arc deformation in the southwestern Pacific: Nature, v. 332, p. 599-604.
11. Isacks, B., Sykes, L., and Oliver, J., 1969, Focal mechanisms of deep and shallow earthquakes in the Tonga-Kermadec region and the tectonics of island arcs: Geological Society of America Bulletin, v. 80, p. 1443-1470.
12. Isacks, B., and Barazangi, M., 1977, Geometry of Benioff zones: Lateral segmentation and downwards bending of the subducted lithosphere, in Talwani, M., and Pitman, W. C., eds., Island arcs, deep sea trenches, and back-arc basins: Washington, D.C., American Geophysical Union, p. 99-114.
13. McCann, W. R., and Sykes, L. R., 1984, Subduction of aseismic ridges beneath the Caribbean plate: Implications for the tectonics and seismic potential of the northeastern Caribbean: Journal of Geophysical Research, v. 89, p. 4493-4519.
14. Molnar, P., and Oliver, J., 1969, Lateral variations of attenuation in the upper mantle and discontinuities in the lithosphere: Journal of Geophysical Research, v. 74, p. 2648-2692.
15. Natland, J. H., 1980, The progression of volcanism in the Samoan linear volcanic chain: American Journal of Science, v. 280-A, p. 709-735.
16. Pelletier, B., and Louat, R., 1989, Seismotectonics and present-day relative plate motions in the Tonga-Lau and Kermadec-Havre region: Tectonophysic, v. 165, p. 237-250.
17. Stein, S., and Wiens, D. A., 1986, Depth determination for shallow teleseismic earthquakes: Methods and results: Reviews of Geophysics, v. 24, p. 806-832.
18. Wiens, D. A., 1987, Effects of near source bathymetry on teleseismic P waveforms: Geophysical Research Letters, v. 14, p. 761-764.
19. Wiens, D. A., 1989, Bathymetric effects on body waveforms from shallow subduction zone earthquakes and application to seismic processes in the Kurile trench: Journal of Geophysical Research, v. 94, p. 2955-2972.
20. Wiens, D. A., and Stein, S., 1983, Age dependence of oceanic intraplate seismicity and implications for lithospheric evolution: Journal of Geophysical Research, v. 88, p. 6455-6468.
21. Wilson, J. T., 1965, A new class of faults and their bearing on continental drift: Nature, v. 207, p. 343-347.