Along-axis magmatic system in the northern Oman ophiolite: Implications of compositional variation of the sheeted dike complex

Geochemistry, Geophysics, Geosystems

Volumn 4, Issue 9, 2003, Pages

  Miyashita, Sumio ^a   Adachi, Yoshiko ^a   Umino, Susumu ^b  

^a NIIGATA UNIVERSITY   (Japan)

^b SHIZUOKA UNIVERSITY   (Japan)

Author keywords

Clinopyroxene; Major and minor element composition; Oman; Ophiolite; Segmentation; Sheeted dike complex

Indexed keywords

EID: 33646537873     PISSN: 15252027     EISSN: 15252027     Source Type: Journal    
DOI: 10.1029/2001GC000235     Document Type: Article

References (65)

1. Adachi, Y., and S. Miyashita, Geology and petrology of the plutonic complexes in Wadi Fizh area: Multiple magmatic events and segment structure in the northern Oman ophiolite, Geochem. Geophys. Geosyst., 4, doi:10.1029/ 2001GC000272, in press, 2003.
2. Alabaster, T., J. A. Pearce, and J. Malpas, The volcanic stratigraphy and petrogenesis of the Oman ophiolite complex, Contrib. Mineral. Petrol., 81, 168-183, 1982.
3. Barth, G. A., and J. C. Mutter, Variability in oceanic crustal thickness and structure: Multichannel seismic reflection results from the northern East Pacific Rise, J. Geophys. Res., 101, 17,951-17,975, 1996.
4. Basaltic Volcanism Study Project, Basaltic Volcanism in the Terrestrial Planets, 1286 pp., Pergamon Press, New York, 1981.
5. Batiza, R., Magmatic segmentation of mid-ocean ridges: A review, in Tectonic, Magmatic, Hydrothermal and Biological Segmentation of Mid-ocean Ridges, edited by C. J. MacLeod et al., Geol. Soc. Spec. Publ., 118, 103-130, 1996.
6. Batiza, R., and Y. Niu, Petrology and magma chamber processes at the East Pacific Rise °9°300N, J. Geophys. Res., 97, 6779-6797, 1992.
7. Boudier, F., G. Ceuleneer, and A. Nicolas, Shear zones, thrusts and related magmatism in the Oman ophiolite: Initiation of thrusting on an oceanic ridge, Tectonophysics, 151, 275-296, 1988.
8. Boudier, F., M. Godard, and C. Armbruster, Significance of gabbronorite occurrence in the crustal section of the Semail ophiolite, Mar. Geophys. Res., 21(3/4), 307-326, 2000.
9. Ceuleneer, G., A. Nicolas, and F. Boudier, Mantle flow patterns at an oceanic spreading centers: The Oman peridotite record, Tectonophysics, 151, 1-26, 1988.
10. Chenevez, J., P. Machetel, and A. Nicolas, Numerical model of magma chambers in the Oman ophiolite, J. Geophys. Res., 103, 15,443-15,455, 1998.
11. Coish, R. A., and L. A. Taylor, The effects of cooling rate on texture and pyroxene chemistry in DSDP Leg 34 basalt: A microprobe study, EarthPlanet. Sci. Lett.,42, 389-398, 1979.
12. Einaude, F., P. Pezard, J. J. Cocheme, C. Coulon, L. Laverne, and M. Godard, Petrography, geochemistry and physical properties of continuous extrusive section from the Sarami Massif, Semail ophiolite, Mar. Geophys. Res., 21, 387-407, 2000.
13. Ernewein, M., C. Pflumio, and H. Whitechurch, The death of an accretion zone as evidenced by the magmatic history of the Sumail ophiolite (Oman), Tectonophysics, 151, 247-274, 1988.
14. Gamble, R. P., and L. A. Taylor, Crystal/liquid partitioning in augite: Effects of cooling rate, Earth Planet. Sci. Lett., 47, 21-33, 1980.
15. Gregory, R. T., D. R. Gray, and J. M. Miller, Tectonics of the Arabian margin associated with the formation and exhumation of high-pressure rocks, Sultanate of Oman, Tectonics, 17, 657-670, 1998.
16. Grove, T. L., R. J. Kinzler, and W. B. Bryan, Fractionation of mid-ocean-ridge basalts (MORB), in Mantle Flow and Melt Generation at Mid-Ocean Ridges, Geophys. Monogr. Ser., vol.71, edited by J. Phipps Morgan et al., pp. 281-310, AGU, Washington, D. C., 1992.
17. Hess, P. C., Phase equilibria constraints on the origin of ocean floor basalts, in Mantle Flow and Melt Generation at Mid-Ocean Ridges, Geophys. Monogr. Ser., vol.71, edited by J. Phipps Morgan et al., pp. 67-102, Washington, D. C., 1992.
18. Hollister, L. S., and A. J. Gancarz, Compositional sector-zoning in clinopyroxene from the Narce area, Italy, Am. Miner., 56, 959-979, 1971.
19. Honnorez, J., The aging of the oceanic crust at low temperature, in The Sea, edited by E. Emiliani, pp. 525-587, Wiley-Interscience, New York, 1981.
20. Ildefonse, B., S. Billiau, and A. Nicolas, A detailed study of mantle flow away from diapirs in the Oman ophiolite, in Mantle and Lower Crust Exposed in Oceanic Ridges and in Ophiolite, edited by R. L. M. Vissers and A. Nicolas, pp. 147-161, Kluwer Acad., Norwell, Mass., 1995.
21. Imai, N., S. Terashima, S. Itoh, and A. Ando, 1994 compilation values for GSJ reference samples, "Igneous series," Geochem. J., 19, 91-95, 1995.
22. Ishikawa, T., K. Nagaishi, and S. Umino, Boninitic volcanism in the Oman ophiolite: Implications for thermal condition during transition from spreading ridge to arc, Geology, 30, 899-902, 2002.
23. Jousselin, D., A. Nicolas, and F. Boudier, Detailed mapping of a mantle diapir below a paleo-spreading center in the Oman ophiolite, J. Geophys. Res., 103, 18,153-18,170, 1998.
24. Juteau, T., M. Beurrier, R. Dahl, and P. Nehlig, Segmentation at a fossil spreading axis: The plutonic sequence of the Wadi Haymiliyah area (Haylayn block, Sumail Nappe, Oman), Tectonophysics, 151, 167-197, 1988.
25. Juteau, T., G. Manacëh, O. Moreau, C. Lecuyer, and C. Ramboz, The high temperature reaction zone of the Oman ophiolite: New field data, microthermometry of fluid inclusions, PIXE analyses and oxygen isotopic ratios, Mar. Geophys. Res., 21(3/4), 351-385, 2000.
26. Karsten, J. L., E. M. Klein, and S. B. Sherman, Subduction zone geochemical characteristics in ocean ridge basalts from the southern Chile Ridge: Implications of modern ridge subduction systems for the Archean, Lithos, 37, 143-161, 1996.
27. Klein, E. M., and C. H. Langmuir, Global correlations of ocean ridge basalt chemistry with axial depth and crustal thickness, J. Geophys. Res., 92, 8089-8115, 1987.
28. Koga, K. T., P. B. Kelemen, and N. Shimizu, Petrogenesis of the crust-mantle transition zone (MTZ) and the origin of lower crustal wehrlite in the Oman ophiolite, Geochem. Geophys. Geosyst., 1, 2000GC000132, 2001.
29. Lachize, M., J. P. Lorand, and T. Juteau, Calk-alkaline differentiation trend in the plutonic sequence of the Wadi Haymiliyah section, Haylayn massif, Semail ophiolite, Oman, Lithos, 38, 207-232, 1996.
30. Langmuir, C. H., J. F. Bender, and R. Batiza, Petrological and tectonic segmentation of the East Pacific Rise, 5°300-14°00N, Nature, 322, 422-429, 1986.
31. Langmuir, C. H., E. Y. Klein, and T. Plank, Petrological systematics of mid-ocean ridge basalts; Constraints on melt generation beneath ocean ridges, in Mantle Flow and Melt Generation at Mid-Ocean Ridges, Geophys. Monogr. Ser., vol.71, edited by J. Phipps Morgan et al., pp. 183-280, AGU, Washington, D. C., 1992.
32. Lawson, K., R. C. Searle, J. A. Pearce, P. Browning, and P. Kempton, Detailed volcanic geology of the MARNOK area, Mid-Atlantic Ridge north of Kane transform, in Tectonic, Magmatic, Hydrothermal and Biological Segmentation of Mid-ocean Ridges, edited by C. J. MacLeod et al., Geol. Soc. Spec. Publ., 118, 103-130, 1996.
33. Lin, J., and J. Phipps Morgan, The spreading rate dependence of three dimensional mid ocean ridge gravity structure, Geophys. Res. Lett., 19, 13-16, 1992.
34. Lippard, S. J., A. W. Shelton, and I. G. Gass, The Ophiolite of Northern Oman, Mem. Geol. Soc. London, vol.11, 178 pp., Blackwell Sci., Malden, Mass., 1986.
35. Macdonald, K. C., D. S. Scheirer, and S. M. Carbotte, Midocean ridges: Discontinuities, segments and giant cracks, Science, 253, 986-994, 1991.
36. MacLeod, C. J., and D. A. Rothery, Ridge axial segmentation in the Oman ophiolite: Evidence from along-strike variations in the sheeted dyke complex, in Ophiolites and Their Modern Oceanic Analogues, edited by L. M. Parson et al., Geol. Soc. Spec. Publ., 60, 39-63, 1992.
37. Mattey, D., N. G. Marsh, and J. Tarney, The geochemistry, mineralogy, and petrology of basalts from the West Philippine and Parece Vela Basins and from Palau-Kyushu and West Mariana Ridges, Deep Sea Drilling Project leg 59, Initial Rep. Deep Sea Drill. Proj., 59, 753-800, 1980.
38. Ministry of Petroleum and Minerals, Buraymi-Sheet NG40-14, geological map, 1:25,0000, Muscat, Sultanate of Oman, 1992.
39. Moores, E. M., L. H. Kellogg, and Y. Dilek, Tethyan ophiolites, mantle convection, and tectonic "historical contingency": A resolution of the "ophiolite conundrum," in Ophiolites and Oceanic Crust: New Insights From Field Studies and the Ocean Drilling Program, edited by Y. Dilek et al., Spec. Pap. Geol. Soc. Am., 349, 3-12, 2000.
40. Nicolas, A., Structures of Ophiolites and Dynamics of Oceanic Lithosphere, 367 pp., Kluwer Acad., Norwell, Mass., 1989.
41. Nicolas, A., G. Ceuleneer, F. Boudier, and M. Misseri, Structural mapping in the Oman ophiolites: Mantle diapirism along an ocean ridge, Tectonophysics, 151, 27-55, 1988.
42. Nicolas, A., F. Boudier, and B. Ildefonse, Variable crustal thickness in the Oman ophiolite: Implications for oceanic crust, J. Geophys. Res., 101, 17,941-17,950, 1996.
43. Nicolas, A., F. Boudier, B. Ildefonse, and E. Ball, Accretion of Oman and United Arab Emirates ophiolite-Discussion of a new structural map, Mar. Geophys. Res., 21, 147-180, 2000.
44. Niu, Y., and R. Batiza, An empirical method for calculating melt compositions produced beneath mid-ocean ridges: Application for axis and off-axis (seamounts) melting, J. Geophys. Res., 96, 21,753-21,777, 1991.
45. O'Hara, M. J., Geochemical evolution during fractional crystallization of periodically refilled magma chamber, Nature, 266, 503-507, 1977.
46. Pearce, J. A., Trace element characteristics of lavas from destructive plate boundaries, in Andesite: Orogenic Andesites and Related Rocks, edited by R. S. Thorpe, pp. 525-548, John Wiley, New York, 1982.
47. Pearce, J. A., T. Alabaster, A. W. Shelton, and M. P. Searle, The Oman ophiolite as a Cretaceous arc-basin complex: Evidence and implications, Philos. Trans. R. Soc. London, Ser. A, 300, 299-317, 1981.
48. Reuber, I., P. Nehlig, and L. Jenatton, Axial segmentation at a fossil oceanic spreading centre in the Haylayn blocks (Semail nappe, Oman): Off-axis mantle diapir and advancing ridge tip, J. Geodyn., 13, 253-278, 1991.
49. Rochette, P., L. Jenatton, C. Dupuy, F. Boudier, and I. Reuber, Diabase dikes emplacement in the Oman ophiolite: A magnetic fabric study with reference to geochemistry, in Ophiolite Genesis and Evolution of the Oceanic Lithosphere, edited by T. Peters et al., pp. 55-82, Minist. of Pet. and Miner., Muscat, Sultanate of Oman, 1991.
50. Schiano, P., R. Clocchiatti, J.-P. Lorand, D. Massare, E. Deloule, and M. Chaussidon, Primitive basaltic melts included in podiform chromites from the Oman Ophiolite, Earth Planet. Sci. Lett., 146, 489-498, 1997.
51. Schweitzer, E. L., J. J. Papike, and A. E. Bence, Statistical analysis of clinopyroxenes from deep-sea basalts, Am. Mineral., 64, 501-513, 1979.
52. Searle, M., and J. Cox, Tectonic setting, origin, and obduction of the Oman ophiolite, Geol. Soc. Am. Bull., 111, 104-122, 1999.
53. Shervais, J. W., Ti-V plots and the petrogenesis of modern and ophiolitic lavas, Earth Planet. Sci. Lett., 59, 101-118, 1982.
54. Shervais, J. W., Birth, death, and resurrection: The life cycle of suprasubduction zone ophiolites, Geochem. Geophys. Geosyst., 2, Paper number 2000GC000080, 2001.
55. Sinton, J. M., S. M. Smaglik, J. J. Mahoney, and K. C. Macdonald, Magmatic processes at super fast spreading ridges: Glass compositional variations along the EPR 13°-23°S, J. Geophys. Res., 96, 6133-6155, 1991.
56. Sparks, D. W., E. M. Parmentier, and J. Phipps Morgan, Threedimensional mantle convection beneath a segmented spreading center: Implications for along-axis variations in crustal thickness and gravity, J. Geophys. Res., 98, 21,977-21,995, 1993.
57. Sturm, M. E., E. M. Klein, J. L. Karsten, and J. A. Karson, Evidence for subduction-related contamination of the mantle beneath the southern Chile Ridge: Implications for ambiguous ophiolite compositions, in Ophiolites and Oceanic Crust: New Insights from Field Studies and the Ocean Drilling Program, edited by Y. Dilek, E. M. Moores, D. Elthon, and A. Nicolas, Spec. Pap. Geol. Soc. Am., 349, 13-20, 2000.
58. Sun, S. S., and W. F. McDonough, Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes, in Magmatism in the Ocean Basins, edited by A. D. Saunders and M. J. Norry, Geol. Soc. Spec. Publ., 42, 313-345, 1989.
59. Takahashi, T., and K. Shuto, Major and trace element analyses of silicate rocks using X-ray fluorescence spectrometry RIX3000 (in Japanese), Rigaku-Denki J., 28, 25-37, 1997.
60. Thompson, G., Basalt-seawater interaction, in Hydrothermal Processes at Seafloor Spreading Centers, edited by P. A. Rona et al., pp. 225-278, Plenum Press, New York, 1983.
61. Thompson, G., W. B. Bryan, and S. E. Humphris, Axial volcanism in the East Pacific Rise, 10-12°N, in Magma-tism in the Ocean Basins, edited by A. D. Saunders and M. J. Norry, Geol. Soc. Spec. Publ., 42, 181-200, 1989.
62. Umino, S., S. Miyashita, F. Hotta, and Y. Adachi, Along-strike variation of the sheeted dike complex in the Oman Ophiolite: Insights into subaxial ridge segment structures and the magma plumbing system, Geochem. Geophys. Geosyst., 4, doi:10.1029/2001GC000235, in press, 2003.
63. Wager, L. R., and G. M. Brown, Layered Igneous Rocks, 588 pp., W. H. Freeman, New York, 1967.
64. Wang, X., and J. R. Cochran, Gravity anomalies, isostasy and mantle flow at the East pacific Rise crust, J. Geophys. Res., 98, 19,505-19,531, 1993.
65. Wang, X., and J. R. Cochran, Along-axis gravity gradients at mid-ocean ridges: Implications for mantle flow and axial morphology, Geology, 23, 29-32, 1995.