Geometry and brittle deformation of the subducting Nazca Plate, Central Chile and Argentina

Geophysical Journal International

Volumn 171, Issue 1, 2007, Pages 419-434

  Anderson, Megan ^a,b   Alvarado, Patricia ^a,c   Zandt, George ^a   Beck, Susan ^a  

^a University of Arizona   (United States)

^b University of Colorado College of Nursing   (United States)

^c UNIVERSIDAD NACIONAL DE SAN JUAN   (Argentina)

Author keywords

Aseismic ridge; Earthquake location; Earthquake source mechanism; Nazca Plate; Seismotectonics; Subduction

Indexed keywords

BENIOFF ZONE; BRITTLE DEFORMATION; FAULT GEOMETRY; FOCAL MECHANISM; PLATE TECTONICS; SEISMOTECTONICS; SLAB; SUBDUCTION; SUBDUCTION ZONE;

ARGENTINA; CHILE; SOUTH AMERICA;

EID: 34547153215     PISSN: 0956540X     EISSN: 1365246X     Source Type: Journal    
DOI: 10.1111/j.1365-246X.2007.03483.x     Document Type: Article

References (54)

1. Abers, G.A., 2005. Seismic low-velocity layer at the top of subducting slabs: Observations, predictions, and systematics, Phys. Earth Planet. Interiors, 149, 7-29.
2. Alvarado, P., Beck, S., Zandt, G., Araujo, M. & Triep, E., 2005. Crustal deformation in the south-central Andes backarc terranes as viewed from regional broad-band seismic waveform modeling, Geophys. J. Int., 163, 580-598.
3. Anderson, M.L., 2005. Seismic anisotropy, intermediate-depth earthquakes, and mantle flow in the Chile-Argentina flat-slab subduction zone, Ph.D. thesis, University of Arizona, Tucson.
4. Araujo, M. & Suarez, G., 1994. Geometry and state of stress of the subducted Nazca plate beneath central Chile and Argentina: Evidence from teleseismic data, Geophys. J. Int., 116, 283-303.
5. Barazangi, M. & Isacks, B.L., 1976. Spatial distribution of earthquakes and subduction of the Nazca plate beneath South America, Geology, 4, 686-692.
6. Berrocal, J. & Fernandez, C., 2005. Flat subduction beneath the Andean region from seismological evidences, in 6th International Symposium on Andean Geodynamics, pp. 107-110, Barcelona.
7. Bondar, I., Myers, S.C., Engdahl, E.R. & Bergman, E.A., 2004. Epicentre accuracy based on seismic network criteria, Geophys. J. Int., 156, 483-496.
8. Booker, J., Favetto, A., Pomposiello, C. & Xuan, F., 2005a. The role of fluids in the Nazca flat slab near 31 degrees S revealed by the electrical resistivity structure, 6th International Symposium on Andean Geodynamics, Extended Abstracts, pp. 119-122.
9. Booker, J.R., Pomposiello, C., Favetto, A. & Burd, A., 2005b. Implications of electrical conductivity structure associated with the Nazca slab beneath Argentina, Eos Trans. AGU, 86, Fall Meet. Suppl. Abstract GP34A-01.
10. Brudzinski, M.R. & Chen, W.P., 2005. Earthquakes and strain in subhorizontal slabs, J. Geophys. Res., 110, doi: 10.1029/2004JB003470
11. Cahill, T. & Isacks, B.L., 1992. Seismicity and shape of the subducted Nazca plate, J. Geophys. Res., 97, 17 503-17 529.
12. Comte, D. et al., 1999. A double-layered seismic zone in Arica, northern Chile, Geophys. Res. Lett., 26, 1965-1968.
13. Crotwell, H.P., Owens, T.J. & Ritsema, J., 1999. The TauP toolkit: flexible seismic travel-time and ray-path utilities, Seismol. Res. Lett., 70, 154-160.
14. Dobson, D.P., Meredith, P.G. & Boon, S.A., 2002. Simulation of subduction zone seismicity by dehydration of serpentine, Science, 298, 1407-1410.
15. Douglas, A., 1967. Joint epicentre determination, Nature, 215, 47-48.
16. Engdahl, E.R., Van Der Hilst, R.D. & Buland, R., 1998. Global teleseismic earthquake relocation with improved travel times and procedures for depth determination, Bull. Seismol. Soc. Am., 88, 722-743.
17. Fisher, R., 1953. Dispersion on a sphere, Proc. Roy. Soc. London Series A-Math. Phys. Sci., 217, 295-305.
18. Flinn, E.A., 1965. Confidence regions and error determinations for seismic event location, Rev. Geophys., 3, 157-185.
19. Fromm, R., Alvarado, P., Beck, S. & Zandt, G., 2006. The April 9, 2001 Juan Fernández Ridge (Mw 6.7) tensional outer-rise earthquake and its aftershock sequence, J. Seismol. 10, 163-170.
20. Gilbert, H., Beck, S. & Zandt, G., 2006. Lithospheric and upper mantle structure of central Chile and Argentina, Geophys. J. Int., 165, 383-398.
21. Gutscher, M.A., 2002. Andean subduction styles and their effect on thermal structure and interplate coupling, J. South Am. Earth Sci., 15, 3-10.
22. Gutscher, M.A., Spakman, W., Bijwaard, H. & Engdahl, E.R., 2000. Geodynamics of flat subduction: Seismicity and tomographic constraints from the Andean margin, Tectonics, 19, 814-833.
23. Hacker, B.R., Peacock, S.M., Abers, G.A. & Holloway, S.D., 2003. Subduction factory -2. Are intermediate-depth earthquakes in subducting slabs linked to metamorphic dehydration reactions?, J. Geophys. Res., 108, doi: 10.1029/2001JB001129
24. Jordan, T.H. & Sverdrup, K.A., 1981. Teleseismic location techniques and their application to earthquake clusters in the south-central Pacific, Bull. Seismol. Soc. Am., 71, 1105-1130.
25. Kendrick, E., Bevis, M., Smalley, R.J., Brooks, B.A., Barriga, R., Lauría, E. & Souto, L.P., 2003. The Nazca-South America Euler vector and its rate of change, J. South Am. Earth Sci., 16, 125-131.
26. Kennett, B.L.N. & Engdahl, E.R., 1991. Traveltimes for global earthquake location and phase identification, Geophys. J. Int., 105, 429-465.
27. Lienert, B.R. & Havskov, J., 1995. A computer program for locating earthquakes both locally and globally, Seismol. Res. Lett., 66, 26-36.
28. Okada, T., Sakoda, K., Matsuzawa, T., Hino, R., Hasegawa, A., Sakai, S. & Kanazawa, T., 2004. Characteristic seismic activity in the subducting plate boundary zone off Kamaishi, northeastern Japan, revealed by precise hypocenter distribution analysis using ocean-bottom seismometers, Geophys. Res. Lett., 31, doi: 10.1029/2004GL020366
29. Pardo, M., Comte, D. & Monfret, T., 2002. Seismotectonic and stress distribution in the central Chile subduction zone, J. South Am. Earth Sci., 15, 11-22.
30. Pardo, M., Monfret, T., Vera, E., Yañez, G. & Eisenberg, A., 2004. Flat-slab to steep subduction transition zone in central Chile-western Argentina: Body waves tomography and state of stress, EOS Trans. AGU, 85, Fall Meet. Suppl. Abstract S51B-0164.
31. Pavlis, G.L. & Booker, J.R., 1983. Progressive multiple event location (PMEL), Bull. Seismol. Soc. Am., 73, 1753-1777.
32. Pilger, R.H., 1981. Plate reconstructions, aseismic Ridges, and low-angle subduction beneath the Andes, Geol. Soc. Am. Bull., 92, 448-456.
33. Pujol, J., 1992. Joint hypocentral location in media with lateral velocity variations and interpretation of the station corrections, Phys. Earth Planet. Interiors, 75, 7-24.
34. Pujol, J., 2000. Joint event location - the JHD technique and applications to data from local seismic networks, in Advances in Seismic Event Location, pp. 163-204, eds Thurber, C.H. & Rabinowitz, H., Kluwer Academic Publishers, Boston.
35. Pujol, J. et al., 1991. Lateral velocity variations in the Andean foreland in Argentina determined with the JHD method, Bull. Seismol. Soc. Am., 81, 2441-2457.
36. Randall, G.E., Ammon, C.J. & Owens, T.J., 1995. Moment-tensor estimation using regional seismograms from portable network deployments, Geophys. Res. Lett., 22, 1665-1668.
37. Reta, M.C., 1992. High resolution view of the Wadati-Benioff zone and determination of the Moho depth in San Juan, Argentina, MS thesis, Memphis State University.
38. Reta, M.C. et al., 1992. Stresses in the subducted Nazca plate beneath San Juan, Argentina, from focal mechanism data, Eos Trans. AGU, 73, 334.
39. Rodi, W., Engdahl, E.R., Bergman, E.A., Waldhauser, F., Pavlis, G.L., Israelsson, H., Dewey, J. & Toksoz, M.N., 2002a. A new grid-search multiple-event location algorithm and a comparison of methods, in The 24th Seismic Research Review, pp. 403-411.
40. Rodi, W., Schultz, C.A., Hanley, W.G., Sarkar, S. & Kuleli, H.S., 2002b. Grid-search location methods for ground-truth collection from local and regional seismic networks, in The 24th Seismic Research Review, pp. 394-402.
41. Schaff, D.P., Bokelmann, G.H.R., Ellsworth, W.L., Zanzerkia, E., Waldhauser, F. & Beroza, G.C., 2004. Optimizing correlation techniques for improved earthquake location, Bull. Seismol. Soc. Am., 94, 705-721.
42. Schaff, D.P., Waldhauser, F. & Richards, P.G., 2003. Applying massive waveform cross correlation and double-difference location to northern California and China, Eos Transactions, AGU, 84, Abstract S21D-0328.
43. Scherbaum, F. & Bouin, M.P., 1997. FIR filter effects and nucleation phases, Geophys. J. Int., 130, 661-668.
44. Slancova, A., Spicak, A., Hanus, V. & Vanek, J., 2000. Delimination of domains with uniform stress in the subducted Nazca plate, Tectonophysics, 319, 339-364.
45. Smalley, R., Pujol, J., Regnier, M., Chiu, J.M., Chatelain, J.L., Isacks, B.L., Araujo, M. & Puebla, N., 1993. Basement seismicity beneath the Andean Precordillera thin-skinned thrust belt and implications for crustal and lithospheric behavior, Tectonics, 12, 63-76.
46. Smalley, R.F. & Isacks, B.L., 1987. A high resolution local network study of the Nazca plate Wadati-Benioff zone under western Argentina, J. Geophys. Res.-Solid Earth Planets, 92, 13903-13912.
47. Snoke, J.A., 2002. FOCMEC: FOCal MEChanism Determinations, Virginia Tech, Blacksburg, VA, pp. 21.
48. von Huene, R., Corvalan, J., Flueh, E.R., Hinz, K., Korstgard, J., Ranero, C.R., Weinrebe, W. & Scientists, C., 1997. Tectonic control of the subducting Juan Fernández Ridge on the Andean margin near Valparaiso, Chile, Tectonics, 16, 474-488.
49. Walter, W.R., Smith, K.D., O'Boyle, J.L., Houk, T.F., Ryall, F., Ruppert, S.D., Myers, S.C., Anderson, M.L. & Dodge, D.A., 2003. Improving the fundamental understanding of regional seismic signal processing with a unique western United States dataset, in The 25th Seismic Research Review, pp. 486-494, Tucson, AZ, 2003.
50. Wagner, L.S., Beck, S. & Zandt, G., 2005. Upper mantle structure in the south central Chilean subduction zone (30° to 36°S), J. Geophys. Res., 110, doi: 10.1029/2004JB003238
51. Waldhauser, F. & Ellsworth, W.L., 2000. A double-difference earthquake location algorithm: Method and application to the northern Hayward fault, California, Bull. Seismol. Soc. Am., 90, 1353-1368.
52. Yañez, G., Cembrano, J., Pardo, M., Ranero, C. & Selles, D., 2002. The Challenger-Juan Fernández-Maipo major tectonic transition of the Nazca-Andean subduction system at 33-34 degrees S: geodynamic evidence and implications, J. South Am. Earth Sci., 15, 23-38.
53. Yañez, G.A., Ranero, C.R., von Huene, R. & Diaz, J., 2001. Magnetic anomaly interpretation across the southern central Andes (32°-34°S): The role of the Juan Fernández Ridge in the late Tertiary evolution of the margin, J. Geophys. Res., 106, 6325-6345.
54. Zhang, H.J., Thurber, C.H., Shelly, D., Ide, S., Beroza, G.C. & Hasegawa, A., 2004. High-resolution subducting-slab structure beneath northern Honshu, Japan, revealed by double-difference tomography, Geology, 32, 361-364.