Subduction influence on magma supply at the East Scotia Ridge

Earth and Planetary Science Letters

Volumn 150, Issue 3-4, 1997, Pages 261-275

  Livermore, Roy ^a   Cunningham, Alex ^a   Vanneste, Lieve ^a   Larter, Robert ^a  

^a BRITISH ANTARCTIC SURVEY   (United Kingdom)

Author keywords

Back arc basins; Magma chambers; Scotia Sea; Sea floor spreading; Subduction

Indexed keywords

BACKARC BASIN; BACKARC BASINS; MAGMA CHAMBERS; MAGMA SUPPLY; MANTLE PROCESSES; MANTLE UPWELLING; SEA FLOOR SPREADING; SEAFLOOR SPREADING; SUBDUCTION;

ATLANTIC, SCOTIA RIDGE;

EID: 0031430614     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/s0012-821x(97)00074-5     Document Type: Article

References (49)

1. P.F. Barker, I.A. Hill, Back-arc extension in the Scotia Sea, Philos. Trans. R. Soc. London Ser. A 300 (1981) 249-262.
2. D.W. Forsyth, Fault plane solutions and tectonics of the South Atlantic and Scotia Sea, J. Geophys. Res. 80 (1975) 1429-1443.
3. A.M. Pelayo, D.A. Wiens, Seismotectonics and relative plate motions in the Scotia Sea region, J. Geophys. Res. 86 (1989) 7293-7320.
4. M. Rognstad, HAWAII-MR1: A New Underwater Mapping Tool, Int. Conf. on Signal Processing and Technology, 1992, pp. 900-905.
5. P.J. Fox, N.R. Grindlay, K.C. Macdonald, S.M. Carbotte, D.W. Forsyth, B.Y. Kuo, The Mid-Atlantic Ridge (31°to 34° 30′S): temporal and spatial variations of accretionary processes, Mar. Geophys. Res. 13 (1991) 1-20.
6. R. Hey, A new class of "pseudofaults" and their bearing on plate tectonics: a propagating rift model, Earth Planet. Sci. Lett. 37 (1977) 321-325.
7. R. Hey, F.K. Duennebier, W.J. Morgan, Propagating rifts on Mid-ocean Ridges, J. Geophys. Res. 85 (1980) 3647-3658.
8. D. McKenzie, The geometry of propagating rifts, Earth Planet. Sci. Lett. 77 (1986) 176-186.
9. M.C. Kleinrock, R.N. Hey, Migrating transform zone and lithospheric transfer at the Galapagos 95.5°W propagator, J. Geophys. Res. 94 (1989) 13859-13878.
10. M.B. Widness, How thin is a thin bed?, Geophysics 38 (6) (1973) 1176-1180.
11. T.J. Herron, P.L. Stoffa, P. Buhl, Magma chamber and mantle reflections - East Pacific Rise, Geophys. Res. Lett. 7 (1980) 989-992.
12. R.S. Detrick, P. Buhl, E. Vera, J.C. Mutter, J. Orcutt, J. Madsen, T. Brocher, Multi-channel seismic imaging of a crustal magma chamber along the East Pacific Rise, Nature 326 (1987) 35-41.
13. G.M. Kent, A.J. Harding, J.A. Orcutt, R.S. Detrick, J.C. Mutter, P.J. Buhl, Uniform accretion of oceanic crust south of the Garrett transform at 14°15′S on the East Pacific Rise, Geophys. Res. 99 (1994) 9097-9116.
14. K.M.M. Rohr, B. Milkereit, C.J. Yorath, Asymmetric deep crustal structure across the Juan de Fuca Ridge, Geology 16 (1988) 533-537.
15. J.S. Collier, M.C. Sinha, Seismic images of a magma chamber beneath the Lau Basin back-arc spreading centre, Nature 346 (1990) 646-648.
16. J.S. Collier, M.C. Sinha, Seismic Mapping of a Magma Chamber Beneath the Valu Fa Ridge, Lau Basin, J. Geophys. Res. 97 (1992) 14031-14053.
17. J.M. Sinton, R.S. Detrick, Mid-ocean ridge magma chambers, J. Geophys. Res. 97 (1992) 197-216.
18. G.M. Purdy, L.S.L. Kong, G.L. Christeson, S.C. Solomon, Relationship between spreading rate and the seismic structure of mid-ocean ridges, Nature 355 (1992) 815-817.
19. N.A. Anstey, Seismic Interpretation, International Human Resources Development Corporation, Boston, 1977.
20. G.M. Kent, A.J. Harding, J.A. Orcutt, Evidence for a smaller magma chamber beneath the East Pacific Rise at 9°30′N, Nature 344 (1990) 650-653.
21. S.A. Hussenoeder, J.A. Collins, G.M. Kent, R.S. Detrick, the TERA Group, Seismic analysis of the axial magma chamber reflector along the southern East Pacific Rise from conventional reflection profiling, J. Geophys. Res. 101 (1996) 22087-22105.
22. Y. Chen, W.J. Morgan, Rift valley/no rift valley transition at mid-ocean ridges, J. Geophys. Res. 95 (1990) 17571-17581.
23. J. Phipps Morgan, Y.J. Chen, Dependence of ridge-axis morphology on magma supply and spreading rate, Nature 364 (1993) 706-708.
24. K.C. Macdonald, Mid-ocean ridges: fine scale tectonic, volcanic and hydrothermal processes within the plate boundary zone, Annu. Rev. Earth Planet. Sci. 10 (1982) 155-190.
25. A. Malinverno, Transition between a valley and a high at the axis of mid-ocean ridges, Geology 21 (1993) 639-642.
26. C. Small, A global analysis of mid-ocean ridge axial topography, Geophys. J. Int. 116 (1994) 64-84.
27. W. Alvarez, Geological evidence for the geographical pattern of mantle return flow and the driving mechanism of plate tectonics, J. Geophys. Res. 87 (1982) 6697-6710.
28. J.A. Pearce, P.T. Leat, P.F. Barker, I. Millar, Geochemical evidence for mantle dynamics and mantle melting beneath the Scotia Sea and surrounding region, EOS Trans. Am. Geophys. Union 76 (1995) F542.
29. D.W. Muenow, N.W.K. Liu, M.O. Garcia, A.D. Saunders, Volatiles on submarine volcanic rocks from the spreading axis of the east Scotia Sea back-arc basin, Earth Planet. Sci. Lett. 47 (1980) 272-278.
30. E.M. Klein, C.H. Langmuir, Global correlations of oceanic ridge basalt chemistry with axial depth and crustal thickness, J. Geophys. Res. 92 (1987) 8089-8115.
31. A.D. Saunders, J. Tarney, The geochemistry of basalts from a back-arc spreading centre in the East Scotia Sea, Geochim. Cosmochim. Acta 43 (1979) 555-572.
32. S. Newman, E. Stolper, Volatiles in magmas from the east Scotia Sea, South Atlantic Ocean, JAG/RAS Meet. on Subduction Zone Structure. Dynamics and Magmatism, London, 1996.
33. K.C. Macdonald, P.J. Fox, The axial summit graben and cross-sectional shape of the East Pacific Rise as indicators of axial magma chambers and recent volcanic eruptions, Earth Planet. Sci. Lett. 88 (1988) 119-131.
34. D.F. Naar, F. Martinez, R.N. Hey, T.B. Reed, S. Stein, Pito Rift - how a large-offset rift propagates, Mar. Geophys. Res. 13 (1991) 287-309.
35. R.C. Searle, J. Francheteau, Morphology and tectonics of the Galapagos triple junction, Mar. Geophys. Res. 8 (1986) 95-129.
36. R. Hey, H.W. Menard, T.M. Atwater, D.W. Caress, Changes in direction of seafloor spreading revisited, J. Geophys. Res. 93 (1988) 2803-2811.
37. J. Phipps Morgan, E.M. Parmentier, Causes and rate-limiting mechanisms of ridge propagation: a fracture mechanics model, J. Geophys. Res. 90 (1985) 8603-8612.
38. J. Phipps Morgan, D.T. Sandwell, Systematics of ridge propagation south of 30°S, Earth Planet. Sci. Lett. 121 (1994) 245-258.
39. R.A. Livermore, D.C. McAdoo, K.M. Marks, Scotia Sea tectonics from high-resolution satellite gravity, Earth Planet. Sci. Lett. 123 (1994) 255-268.
40. H. Schouten, H.J.B. Dick, K.D. Klitgord, Migration of midocean-ridge volcanic segments, Nature 326 (1987) 835-839.
41. C.P. Brett, Seismicity of the South Sandwich Islands region, Geophys. J. R. Astron. Soc. 51 (1977) 453-464.
42. R.M. Russo, P.G. Silver, Trench-parallel flow beneath the Nazca plate from seismic anisotropy, Science 263 (1994) 1105-1111.
43. J.A. Pearce, M. Ernewein, S.H. Bloomer, L.M. Parson, B.J. Murton, L.E. Johnson, Geochemistry of Lau Basin volcanic rocks: influence of ridge segmentation and arc proximity, in: J.L. Smellie (Ed.), Volcanism Associated with Extension at Consuming Plate Margins, Geol. Soc. London Spec. Publ. 81 (1995) 53-75.
44. T.L. Vallier, G.A. Jenner, F.A. Frey et al., Subalkaline andesite from Valu Fa Ridge, a back-arc spreading centre in southern Lau Basin: petrogenesis, comparative chemistry, and tectonic implications, Chem. Geol. 91 (1991) 227-256.
45. E. Stolper, S. Newman, The role of water in the petrogenesis of Mariana trough magmas, Earth Planet. Sci. Lett. 121 (1994) 293-325.
46. L.M. Parson, J.A. Pearce, B.J. Murton, R.A. Hodkinson, RRS Charles Darwin Scientific Party, Role of ridge jumps and ridge propagation in the tectonic evolution of the Lau back-arc basin, southwest Pacific, Geology 18 (1990) 470-473.
47. P. Wessel, W.H.F. Smith, New Version of the Generic Mapping Tools Released, EOS Trans. Am. Geophys. Union 76 (1995) 329.
48. D.T. Sandwell, M.M. Yale, W.H.F. Smith, Gravity anomaly profiles from ERS-1, Topex, and Geosat altimetry, EOS Trans. Am. Geophys. Union 76 (1995) S89.
49. IOC, IHO and BODC, GEBCO Digital Atlas, British Oceanographic Data Centre, Birkenhead, England, 1994.