Compositions of dikes and lavas from the Pito Deep Rift: Implications for crustal accretion at superfast spreading centers

Journal of Geophysical Research: Solid Earth

Volumn 114, Issue 3, 2009, Pages

  Pollock, Meagen A ^a   Klein, Emily M ^b   Karson, Jeffrey A ^c   Coleman, Drew S ^d  

^a 931 College Mall   (United States)

^b DUKE UNIVERSITY   (United States)

^c SYRACUSE UNIVERSITY   (United States)

^d UNIVERSITY OF NORTH CAROLINA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACCRETION; DIKE; LAVA; LEAD ISOTOPE; MAGNESIUM; MANTLE SOURCE; MID-OCEAN RIDGE; OCEANIC CRUST; RARE EARTH ELEMENT; SPATIAL DISTRIBUTION;

EAST PACIFIC RISE; PACIFIC OCEAN; PITO DEEP;

EID: 67649834303     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: 10.1029/2007jb005436     Document Type: Article

References (82)

1. Alt, J. C. (1993), Low-temperature alteration of basalts from the Hawaiian Arch, Leg 136, Proc Ocean Drill. Program Sci. Results, 136, 133-146.
2. Andrews, A. J. (1977), Low temperature fluid alteration of oceanic layer 2 basalts, DSDP Leg 37, Can. J. Earth Sci, 14, 911-926.
3. Asimow, P. D., and M. S. Ghiorso (1998), Algorithmic modifications extending MELTS to calculate subsolidus phase relations, Am. Mineral, 83, 1127-1132. (Pubitemid 29112234)
4. Bach, W., E. Hegner, J. Erzinger, and M. Satir (1994), Chemical and isotopic variations along the superfast spreading East Pacific Rise from 6 to 30° S, Contrib. Mineral. Petrol, 116, 365-380, doi:10.1007/BF00310905.
5. Bedard, J. H. (1994), A procedure for calculating the equilibrium distribution of trace elements among the minerals of cumulate rocks, and the concentration of trace elements in the coexisting liquids, Chem. Geol., 118, 143-153, doi:10.1016/0009-2541(94)90173-2.
6. Bergmanis, E. C., J. Sinton, and K. H. Rubin (2007), Recent eruptive history and magma reservoir dynamics on the southern East Pacific Rise at 17°30′S, Geochem. Geophys. Geosyst., 8, Q12O06, doi:10.1029/ 2007GC001742.
7. Byerly, G. (1980), The nature of differentiation trends in some volcanic rocks from the Galapagos spreading center, J. Geophys. Res., 85, 3797-3810, doi: 10.1029/JB085iB07p03797.
8. Cheatham, M., W. F. Sangrey, and W. M. White (1993), Sources of error in external calibration ICP-MS analysis of geological samples and improved nonlinear drift correction procedure, Spectrochim. Acta B, 48, 487-506. (Pubitemid 23641251)
9. Christeson, G. L., G. M. Purdy, and G. J. Fryer (1994), Seismic constraints on shallow crustal emplacement processes at the fast spreading East Pacific Rise, J. Geophys. Res., 99, 17,957-17,973, doi:10.1029/ 94JB01252.
10. Christeson, G. L., K. D. McIntosh, and J. A. Karson (2007), Inconsistent correlation of seismic layer 2a and lava layer thickness in oceanic crust, Nature, 445, 418-421, doi:10.1038/nature05517. (Pubitemid 46160907)
11. Cogne, J. P., J. Francheteau, V. Courtillot, and Pito93 Scientific Team (1995), Large rotation of the Easter Microplate as evidenced by oriented paleomagnetic samples from the ocean floor, Earth Planet. Sci. Lett., 136, 213-222, doi:10.1016/0012-821X(95)00191-E.
12. Constantin, M., R. Hekinian, D. Bideau, and R. Hebert (1996), Construction of the oceanic lithosphere by magmatic intrusions; petrological evidence from plutonic rocks formed along the fast-spreading East Pacific Rise, Geology, 24, 731-734, doi:10.1130/0091-7613(1996)024< 0731:COTOLB>2.3. CO;2. (Pubitemid 27040656)
13. Cormier, M.-H., and K. C. Macdonald (1994), East Pacific Rise 18°- 190S: Asymmetric spreading and ridge reorientation by ultrafast migration of axial discontinuities, J. Geophys. Res., 99, 543-564, doi: 10.1029/ 93JB02382. (Pubitemid 24424213)
14. 2O on crystallization of mid-ocean ridge and backarc basin magmas, J. Volcanol. Geotherm. Res., 110(3-4), 265-280, doi:10.1016/S0377-0273(01) 00213-X.
15. Detrick, R. S., A. J. Harding, G. M. Kent, J. A. Orcutt, J. C. Mutter, and P, Buhl (1993), Seismic structure of the southern East Pacific Rise, Science, 259, 499-503, doi:10.1126/science.259.5094.499.
16. Dziak, R. P., C. G. Fox, and A. E. Schreiner (1995), The June-July 1993 seismo-acoustic event at CoAxial segment, Juan de Fuca Ridge: Evidence for a lateral dike injection, Geophys. Res. Lett., 22, 135-138, doi: 10.1029/94GL01857.
17. Dziak, R. P., D. R. Bohnenstiehl, J. P. Cowen, E. T. Baker, K. H. Rubin, J. H. Hazel, and M. J. Fowler (2007), Rapid dike emplacement leads to dramatic hydrothermal plume release during seafloor spreading events, Geology, 35, 579-582, doi:10.1130/G23476A.1. (Pubitemid 47099237)
18. Embley, R. W., W. W. Chadwick, M. R. Perfit, M. C. Smith, and J. R. Delaney (2000), Recent eruptions on the CoAxial segment of the Juan de Fuca Ridge: Implications for mid-ocean ridge accretion processes, J. Geophys. Res., 105, 16,501-16,525, doi: 10.1029/2000JB900030.
19. Francheteau, J., D. Naar, R. Armijo, J.-P. Cogne, M. Constantin, J. Girardeau, R. Hekinian, R. Hey, and R. Searle (1994), Black smoker discovered, Pito Seamount near Easter Microplate propagator tip, Eos Trans. AGU, 75(16), Spring Meet. Suppl., 322.
20. Gast, P. W. (1968), Trace element fractionation and the origin of tholeiitic and alkaline magma types, Geochim. Cosmochim. Acta, 32, 1057-1068, doi: 10.1016/0016-7037(68)90108-7.
21. Ghiorso, M. S., and R. O. Sack (1995), Chemical mass transfer in magmatic processes IV. A revised and internally consistent thermodynamic model for the interpolation and extrapolation of liquid-solid equilibria in magmatic systems at elevated temperatures and pressures, Contrib. Mineral Petrol, 119, 197-212, doi:10.1007/BF00307281. (Pubitemid 26455315)
22. Green, T. H., and A. E. Ringwood (1968), Genesis of the calc-alkaline igneous rock suite, Contrib. Mineral. Petrol, 18(2), 105-162, doi:10.1007/BF00371806.
23. Haase, K. M. (2002), Geochemical constraints on magma sources an mixing processes in Easter Microplate MORB (SE Pacific): A case study of plume-ridge interaction, Chem. Geol, 182, 335-355, doi:10.1016/ S0009-2541 (01 )00327-328
24. Hall, L. S., J. J. Mahoney, J. M. Sinton, and R. A. Duncan (2006), Spatial and temporal distribution of a C-like asthenospheric component in the Rano Rahi Seamount Field, East Pacific Rise, 15°-19°S, Geochem. Geophys. Geosyst., 7, Q03009, doi:10.1029/2005GC000994.
25. Hamelin, B., B. Dupre, and J. Allegre (1984), Lead-strontium isotopic variations along the East Pacific Rise and the Mid-Atlantic Ridge, Earth Planet. Sci Lett., 67, 340-350, doi:10.1016/0012-821X(84)90173-0.
26. Hammond, W. C., and D. R. Toomey (2003), Seismic velocity anisotropy and heterogeneity beneath the Mantle Electromagnetic and Tomography Experiment (MELT) region of the East Pacific Rise from analysis of P and S body waves, J. Geophys. Res., 108(B4), 2176, doi:10.1029/ 2002JB001789.
27. Hanan, B. B., and J.-G. Schilling (1989), Easter Microplate evolution: Pb isotope evidence, J. Geophys. Res., 94, 7432-7448, doi:10.1029/ JB094iB06p07432.
28. Handschumacher, D. W., R. H. Pilger, J. A. Forman, and J. F. Campbell (1981), Structure and evolution of the Easter plate, in Nazca Plate: Crustal Formation and Andean Convergence, edited by L. KuIm et al., Mem. Geol. Soc. Am., 154, 63-76.
29. Hayman, N. W., and J. A. Karson (2006), Fault-controlled fluid flow regimes along the East Pacific Rise (EPR): Geologic views through tectonic windows, Geol. Soc. Am. Abstr. Programs, 38, 17.
30. Heft, K. L., K. M. Gillis, M. A. Pollock, J. A. Karson, and E. M. Klein (2008), Role of upwelling hydrothermal fluids in the development of alteration patterns at fast spreading ridges: Evidence from the sheeted dike complex at Pito Deep, Geochem. Geophys. Geosyst., 9, Q05007, doi: 10.1029/2007GC001926.
31. Hekinian, R., J. Francheteau, R. Armijo, J.-P. Cogné, M. Constantin, J. Girardeau, R. Hey, D. Naar, and R. Searle (1996), Petrology of the Easter Microplate region in the South Pacific, J. Volcanol. Geotherm. Res., 72, 259-289, doi:10.1016/0377-0273(96)00013-3. (Pubitemid 27127350)
32. Hey, R. N., D. F. Naar, M. C. Kleinrock, W. J, Phipps Morgan, E. Morales, and J. G. Schilling (1985), Microplate tectonics along a superfast seafloor spreading system near Easter Island, Nature, 317,320-325, doi:10.1038/ 317320a0. (Pubitemid 16283495)
33. Horst, A., R. J. Varga, J. S. Gee, and J. A. Karson (2006), Magnetic remanence and anisotropy of magnetic susceptibility of dikes from super-fast spread crust exposed at Pito Deep Rift, Eos Trans. AGU, 57(52), Fall Meet. Suppl., Abstract T51C-1546.
34. Humphris, S., W. Melson, and R. Thompson (1980), Basalt weathering on the East Pacific Rise and the Galapagos spreading center, Deep Sea Drilling Project Leg 54, Deep Sea Drill. Proj. Initial Rep., 54, 773-787.
35. Karson, J. A., et al. (2002a), Structure of uppermost fast-spread oceanic crust exposed at the Hess Deep Rift: Implications for subaxial processes at the East Pacific Rise, Geochem. Geophys. Geosyst., 5(1), 1002, doi:10.1029/ 2001GC000155.
36. Karson, J. A., M. A. Tivey, and J. R. Delaney (2002b), Internal structure of uppermost oceanic crust along the Western Blanco Transform Scarp: Implications for subaxial accretion and deformation at the Juan de Fuca Ridge, J. Geophys. Res., 107(B9), 2181, doi: 10.1029/2000JB000051.
37. Karson, J. A., et al. (2005), Nested-scale investigation of tectonic windows into super-fast spread crust exposed at the Pito Deep Rift, Easter Microplate, SE Pacific, InterRidge Newsl., 14, 5-8.
38. Kent, G. M., A. J. Harding, J. A. Orcutt, R. S. Detrick, J. C. Mutter, and P. Buhl (1994), Uniform accretion of oceanic crust south of the Garrett transform at 14°15'S on the East Pacific Rise, J. Geophys. Res., 99, 9097-9116, doi:10.1029/93JB02872. (Pubitemid 24428872)
39. Klein, E. M., and C. H., Langmuir (1987), Global correlations of ocean ridge basalt chemistry with axial depth and crustal thickness, J. Geophys. Res., 92, 8089-8115, doi: 10.1029/JB092iB08p08089.
40. Klein, E. M., C. H. Langmuir, and H. Staudigel (1991), Geochemistry of basalts from the Southeast Indian Ridge, 115°E-138°E, J. Geophys. Res., 96, 2089-2107, doi: 10.1029/90JB01384.
41. Knight, M. D., and G. P. L. Walker (1988), Magma flow directions in dikes of the Koolau Complex, Oahu, determined from magnetic fabric studies, J. Geophys. Res., 93, 4301-4320, doi: 10.1029/JB093iB0Sp04301.
42. Larson, R. L., C. T. Popham, and R. A. Pockalny (2005), Lithologie and structural observations at Endeavor Deep and their implications for the accretion process at fast to ultra-fast spreading rates, Eos Trans. AGU, 86(52), Fall Meet. Suppl., Abstract T33D-0594.
43. Macdonald, K. C., R. M. Haymon, S. P. Miller, J.-C. Sempere, and P. J. Fox (1988), Deep-tow and SeaBeam studies of dueling propagating ridges on the East Pacific Rise near 20°40'S, J. Geophys. Res., 93, 2875-2898, doi:10.1029/JB093iB04p02875.
44. MacDonald, W. D., and H. C. Palmer (1990), Flow directions in ash-flow tuffs: A comparison of geologic and magnetic susceptibility measurement, Tshirege member (upper Bandelier Tuff), Valles caldera, New Mexico, USA, Bull. Volcanol, 53, 45-59, doi:10.1007/BF00680319.
45. Mahoney, J. J., J. M. Sinton, M. D. Kurz, J. D. MacDougall, K. J. Spencer, and G. W. Lugmair (1994), Isotope and trace element characteristics of a superfast spreading ridge: East Pacific Rise 13-23°S, Earth Planet. Sci. Lett., 121, 173-191, doi:10.1016/0012-821X(94)90039-6.
46. Martinez, F., D. F. Naar, T. B. Reed IV, and R. N. Hey (1991), Threedimensional SeaMARC II, gravity, and magnetics study of large-offset rift propagation at the Pito rift, Easter Microplate, Mar. Geophys. Res., 13, 255-285, doi:10.1007/BF00366279.
47. Moores, E. M., and F. J. Vine (1971), The Troodos massif, Cyprus, and other ophiolites as oceanic crust: Evaluation and implications, Philos. Trans. R. Soc. London, Ser. A, 268, 443-466, doi: 10.1098/ rsta. 1971.0006.
48. Morgan, L. A., J. A. Karson, N. W. Hayman, R. J. Varga, and S. D. Hurst (2005), Internal structure of basaltic lavas and sheeted dikes in 3 Ma super-fast EPR crust exposed at Pito Deep, Eos Trans. AGU, 86(52), Fall Meet. Suppl., Abstract T33D-0588.
49. Naar, D. F., and R. N. Hey (1989), Speed limit for oceanic transform faults, Geology, 17, 420-422, doi:10.1130/0091-7613( 1989)017< 0420:SLFOTF>2.3.CO;2.
50. Naar, D. F., and R. N. Hey (1991), Tectonic evolution of the Easter Microplate, J. Geophys. Res., 96, 7961-7993, doi:10.1029/90JB02398.
51. Naar, D. F, F. Martinez, R. N. Hey, T. B. Reed IV, and. S. Stein (1991), Pito rift: How a large-offset rift propagates, Mar. Geophys. Res., 13, 287-309, doi:10.1007/BF00366280.
52. Niu, Y., D. G. Waggoner, J. M. Sinton, and J. J. Mahoney (1996), Mantle source heterogeneity and melting processes beneath seafloor spreading centers: East Pacific Rise 18°-19°S, J. Geophys. Res., 101, 27,71127,733, doi:10.1029/96JB01923. (Pubitemid 126535603)
53. Parrish, R. R., J. C. Roddick, W. D. Loveridge, and R. W. Sullivan (1987), Uranium-lead analytical techniques at the Geochronology Laboratory, Pap. Geol. Surv. Can., 82, 3-7.
54. Perfit, M. R., D. J. Fomari, M. C. Smith, J. F. Bender, C. H. Langmuir, and R. M. Haymon (1994), Small-scale spatial and temporal variations in mid-ocean ridge crest magmatic processes, Geology, 22, 375-379, doi:10.1130/0091-7613(1994)022<0375:SSSATV>2.3.CO;2. (Pubitemid 24425704)
55. Perk, N. W., L. A. Coogan, J. A. Karson, E. M. Klein, and H. Hanna (2007), Petrology and geochemistry of primitive lower oceanic crust from Pito Deep: Implications for the accretion of the lower crust at the southern East Pacific Rise, Contrib. Mineral. Petrol, 154(5), doi:10.1007/s00410007-0210-z.
56. Pollock, M. A. (2007), Geochemistry of dikes and lavas from tectonic windows, Ph.D. dissertation, Duke Univ., Durham, N. C.
57. Pollock, M. A., E. M. Klein, J. A. Karson, and M. A. Tivey (2005), Temporal and spatial variability in the composition of lavas exposed along the Western Blanco Transform Fault, Geochem. Geophys. Geosyst., 6, Ql 1009, doi: 10.1029/2005GC001026.
58. Rapanui Scientific Party, et al. (1988), Pito and Orongo fracture zones: The northern and southern boundaries of the Easter Microplate (southeast Pacific), Earth Planet. Sci Lett., 89, 363-374, doi: 10.1016/0012821X(88)90123- 9.
59. Rubin, K. H., and J, M. Sinton (2007 Inferences on mid-ocean ridge thermal and magmatic structure from MORB compositions, Earth Planet. Sci. Lett., 260, 257-276, doi:10.1016/j.epsl.2007.05.035. (Pubitemid 47040597)
60. Rubin, K. H., M. C. Smith, E. C. Bergmanis, M. R. Perfit, J. M. Sinton, and R. Batiza (2001), Magmatic history and volcanological insights from individual lava flows erupted on the seafloor, Earth Planet. Sci Lett., 188, 349-367, doi:10.1016/S0012-821X(01)00339-9.
61. Rusby, R. I., and R. C. Searle (1993), Intraplate thrusting near the Easter Microplate, Geology, 21, 311-314, doi: 10.1130/00917613(1993)02 K0311 :ITNTEM>2.3 .CO;2. (Pubitemid 23391238)
62. Rusby, R. I., and R. C. Searle (1995), A history of the Easter Microplate, 5.25 Ma to present, J. Geophys. Res., 100(B7), 12,617-12,640, doi:10.1029/94JB02779.
63. Searle, R. C., R. I. Rusby, J. Engeln, R. N. Hey, J. Zukin, P. M. Hunter, T. P. LeBas, H. J. Hoffman, and R. Livermore (1989), Comprehensive sonar imaging of the Easter Microplate, Nature, 341, 701-705, doi:10.1038/ 341701a0. (Pubitemid 20410093)
64. Sempéré, J.-C., K. C. Macdonald, S. P. Miller, and L. Shure (1987), Detailed study of the Brunhes/Matuyama reversal boundary on the east Pacific rise at 19°30'S: Implications for crustal emplacement processes at an ultra fast spreading center, Mar. Geophys. Res., 9, 1-23, doi: 10.1007/ BF00338248.
65. Sims, K. W., et al. (2002), Chemical and isotopic constraints on the generation and transport of magma beneath the East Pacific Rise, Geochim. Cosmochim. Acta, 66,3481-3504, doi:10.1016/S0016-7037(02)00909-2. (Pubitemid 35225044)
66. Sinton, J. M., and P. Fryer (1987), Mariana trough lavas from 18°N: Implications for the origin of back-arc basin basalts, J. Geophys. Res., 92, 12,782-12,802, doi: 10.1029/JB092ÍB12p 12782.
67. Sinton, J. M., S. M. Smaglick, J. J. Mahoney, and K. C Macdonald (1991), Magmatic processes at superfast spreading mid-ocean ridges: Glass compositional variations along the East Pacific Rise 13°-23 S, J. Geophys. Res., 96, 6133-6155, doi:10.1029/90JB02454.
68. Sinton, J., E. Bergmanis, K. Rubin, R. Batiza, T. K. P. Gregg, K. Grönvold, K. C. Macdonald, and S. M. White (2002), Volcanic eruptions on midocean ridges: New evidence from the superfast spreading East Pacific Rise, 17°-19°S, J. Geophys. Res., 107(B6), 2115, doi:10.1029/ 2000JB000090. (Pubitemid 35474261)
69. 2O in calc-alkaline differentiation and subduction zone magmatism, Contrib. Mineral. Petrol, 113(2), 143-166, doi: 10.1007/BF00283225.
70. Stakes, D. S., M. R. Perfit, M. A. Tivey, D. W. Caress, T. M. Ramirez, and N. Maher (2006), The Cleft revealed: Geologic, magnetic, and morphologic evidence for construction of upper oceanic crust along the southern Juan de Fuca Ridge, Geochem. Geophys. Geosyst., 7, Q04003, doi: 10.1029/2005GC001038.
71. Staudigel, H., J. S. Gee, L. Tauxe, and R. J. Varga (1992), Shallow intrusive directions of sheeted dikes in the Troodos ophiolite, Geology, 20, 841- 844, doi: 10.1130/0091 -7613(1992)0200841 :SIDOSD>2.3.CO;2.
72. Stewart, M. A., E. M. Klein, and J. A. Karson (2002), Geochemistry of dikes and lavas from the north wall of the Hess Deep Rift: Insights into the four-dimensional character of crustal construction at fast spreading mid-ocean ridges, J. Geophys. Res., 107(B10), 2238, doi: 10.1029/ 2001JB000545.
73. Stewart, M. A., E. M. Klein, J. A. Karson, and J. G. Brophy (2003), Geochemical relationships between dikes and lavas at the Hess Deep Rift: Implications for magma eruptibility, J. Geophys. Res., 108(B4), 2184, doi:10.1029/2001JB001622.
74. Stewart, M. A., J. A. Karson, and E. M. Klein (2005), Four-dimensional upper crustal construction at fast-spreading mid-ocean ridges: A perspective from an upper crustal cross-section at the Hess Deep Rift, J. Volcanol Geotherm. Res., 144,287-309, doi:10.1016/j.jvolgeores.2004.11.026. (Pubitemid 40876220)
75. Sun, S.-S., and W. F. McDonough (1989), Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and process, in Magmatism in the Ocean Basins, edited by A. D. Saunder and M. J. Norry, Geol. Soc. Spec. Publ, 42, 3313-3345.
76. Tivey, M. A., H. P. Johnson, C Fleutelot, S. Hussenoeder, R. Lawrence, C. Waters, and B. Wooding (1998), Direct measurement of magnetic reversal polarity boundaries in a cross-section of oceanic crust, Geo-phys. Res. Lett., 25, 3631-3634, doi:10.1029/98GL02752.
77. Varga, R. J., J. Gee, and H. Staudigel (1998), Dike surface lineations as magma flow indicators within the sheeted dike complex of the Troodos ophiolite, Cyprus, J. Geophys. Res., 103, 5241-5256, doi:10.1029/ 97JB02717.
78. Varga, R. J., A. J. Horst, J. S. Gee, and J. A. Karson (2008), Direct evidence from anisotropy of magnetic susceptibility for lateral melt migration at superfast spreading centers, Geochem. Geophys. Geosyst, 9, Q08008, doi:10.1029/2008GC002075.
79. Vera, E. E., and J. B. Diebold (1994), Seismic imaging of oceanic layer 2A between 9°30'N and 10°N on the East Pacific Rise from two-ship wideaperture profiles, J. Geophys. Res., 99, 3031-3041, doi:10.1029/ 93JB02107.
80. Wilson, D. S., et al. (2006), Drilling to gabbro in intact ocean crust, Science, 312, 1016-1020, doi:10.1126/science.H26090.
81. Workman, R. K., and S. R. Hart (2005), Major and trace element composition of the depleted MORB mantle (DMM), Earth Planet. Sci. Lett., 231, 53-72, doi:10.1016/j.epsl.2004.12.005.
82. Zukin, J. H., and J. Francheteau (1990), A tectonic test of instantaneous kinematics of the Easter Microplate, Oceanol. Acta, 10, 183-198.