Influence of magma supply and spreading rate on crustal magma bodies and emplacement of the extrusive layer: insights from the East Pacific Rise at lat 16°N

Geology

Volumn 26, Issue 5, 1998, Pages 455-458

  Carbotte, Suzanne ^a   Mutter, Carolyn ^a   Mutter, John ^a   Ponce Correa, Gustavo ^a  

^a Department of Earth and Environmental Sciences   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

GEOLOGY;

ABRUPT TRANSITION; AXIAL MORPHOLOGY; EAST PACIFIC RISE; MAGMA CHAMBER; SEISMIC REFLECTION DATA; SHALLOW LEVELS; SPREADING RATE; SPREADING RIDGE;

MORPHOLOGY;

EXTRUSIVE LAYER; MAGMA SUPPLY; MID OCEAN RIDGE; SEA FLOOR SPREADING; SEEA FLOOR SPREADING; SPREADING RATE;

EAST PACIFIC RISE; PACIFIC;

EID: 84879886127     PISSN: 00917613     EISSN: None     Source Type: Journal    
DOI: 10.1130/0091-7613(1998)026<0455:IOMSAS>2.3.CO;2     Document Type: Article

References (25)

1. Buck, R. W., Carbotte, S. M., and Mutter, C. Z., 1997, Controls on extrusion at mid-ocean ridges: Geology, v. 25, p. 935-938.
2. Carbotte, S. M., Mutter, J. C., and Wu, L., 1997, Contribution of volcanism and tectonism to axial and flank morphology of the southern East Pacific Rise, 17°10′-17°40′, from a study of layer 2A geometry: Journal of Geophysical Research, v. 102, p. 10165-10184.
3. Christeson, G. L., Purdy, G. M., and Fryer, G. J., 1994, Seismic constraints on shallow crustal emplacement processes at the fast spreading East Pacific Rise: Journal of Geophysical Research, v. 99, p. 17957-17974.
4. DeMets, C., Gordan, R. G., Argus, D. F., and Stein, S., 1994, Effect of recent revisions to the geomagnetic reversal time scale on estimates of current plate motions: Geophysical Research Letters, v. 21, p. 2191-2194.
5. Detrick, R. S., Harding, A. J., Kent, G. M., Orcutt, J. A., Mutter, J. C., and Buhl, P., 1993, Seismic structure of the southern East Pacific Rise: Science, v. 259, p. 499-503.
6. Harding, A. J., Kent, G. M., and Orcutt, J. A., 1993, A multichannel seismic investigation of upper crustal structure at 9°N on the East Pacific Rise: Implications for crustal accretion: Journal of Geophysical Research, v. 98, p. 13925-13944.
7. Haymon, R. M., Fornari, D. J., Edwards, M. H., Carbotte, S., Wright, D., and Macdonald, K. C., 1991, Hydrothermal vent distribution along the East Pacific Rise crest (9°09′-9°54′N) and its relationship to magmatic and tectonic processes on fast spreading ridges: Earth and Planetary Science Letters, v. 104, p. 513-534.
8. Hooft, E. E., Detrick, R. S., and Kent, G. M., 1997, Seismic structure and indicators of magma budget along the southern East Pacific Rise: Journal of Geophysical Research, v. 102, p. 27319-27340.
9. Kent, G. M., Harding, A. J., and Orcutt, J. A., 1993, Distribution of magma beneath the East Pacific Rise between the Clipperton transform and the 9°17′N Deval from forward modelling of common depth point data: Journal of Geophysical Research, v. 98, p. 13945-13696.
10. Kent, G. M., Harding, A. J., Orcutt, J. A., Detrick, R. S., Mutter, J. C., and Buhl, P., 1994, Uniform accretion of oceanic crust south of the Garrett transform at 14°15′S on the East Pacific Rise: Journal of Geophysical Research, v. 99, p. 9097-9116.
11. Langmuir, C. H., Bender, J. F., and Batiza, R., 1986, Petrologic and tectonic segmentation of the East Pacific Rise, 5°30′N-14°30′N: Nature, v. 322, p. 422-429.
12. Macdonald, K. C., and Fox, P. J., 1988, The axial summit graben and cross-sectional shape of the East Pacific Rise as indicators of axial magma chambers and recent eruptions: Earth and Planetary Science Letters, v. 88, p. 119-131.
13. Macdonald, K. C., Sempere, J.-C., and Fox, P. J., 1984, East Pacific Rise from Siqueiros to Orozco Fracture Zones: Along-strike continuity of axial neovolcanic zone and structure and evolution of overlapping spreading centers: Journal of Geophysical Research, v. 89, p. 6049-6069.
14. Mutter, C. Z., 1995, Seismic and Hydrosweep study of the western Costa Rica Rift: Eos (Transactions, American Geophysical Union), v. 76, p. F595.
15. Phipps Morgan, J., and Chen, Y. J., 1993a, The genesis of oceanic crust: Magma injection, hydrothermal circulation, and crustal flow: Journal of Geophysical Research, v. 98, p. 6283-6297.
16. Phipps Morgan, J., and Chen, Y. J., 1993b, Dependence of ridge-axis morphology on magma supply and spreading rate: Nature, v. 364, p. 706-708.
17. Purdy, G. M., Kong, L. S. L., Christeson, G. L., and Solomon, S. C., 1992, Relationship between spreading rate and the seismic structure of mid-ocean ridges: Nature, v. 355, p. 815-817.
18. Scheirer, D. S., and Macdonald, K. C., 1993, Variation in cross-sectional area of the axial ridge along the East Pacific Rise: Evidence for the magmatic budget of a fast spreading center: Journal of Geophysical Research, v. 98, p. 7871-7885.
19. Sinha, M. C., Navin, D. A., MacGregor, L. M., Constable, S., Pierce, C., White, A., Heinson, G., and Inglis, M. A., 1997, Evidence for accumulated melt beneath the slow spreading Mid-Atlantic Ridge, in Cann, J. R., Elderfield, H., and Laughton, A., eds., Mid-ocean ridges: Dynamics of processes associated with creation of new ocean crust: Royal Society of London Philosophical Transactions, v. 355, p. 233-253.
20. Small, C., 1994, A global analysis of mid-ocean ridge axial topography: Geophysical Journal International, v. 116, p. 64-84.
21. Small, C., and Sandwell, D. T., 1992, An analysis of ridge axis gravity roughness and spreading rate: Journal of Geophysical Research, v. 97, p. 3235-3245.
22. Vera, E. E., Buhl, P., Mutter, J. C., Harding, A. J., Orcutt, J. A., and Detrick, R. S., 1990, The structure of 0-0.2 My old oceanic crust at 9°N in the East Pacific Rise from expanded spread profiles: Journal of Geophysical Research, v. 95, p. 15529-15556.
23. Wang, X., and Cochran, J. R., 1995, Along-axis gravity gradients at mid-ocean ridges: Implications for mantle flow and axial topography: Geology, v. 23, p. 29-32.
24. Weiland, C. M., and Macdonald, K. C., 1996, Geophysical study of the East Pacific Rise 15°-17°N: An unusually robust segment: Journal of Geophysical Research, v. 101, p. 20257-20274.
25. Wilson, D., 1992, Focused mantle upwelling beneath mid-ocean ridges: Evidence from seamount formation and isostatic compensation of topography: Earth and Planetary Science Letters, v. 113, p. 41-55.