The conundrum of samail: Explaining the metamorphic history

Tectonophysics

Volumn 279, Issue 1-4, 1997, Pages 215-226

  Hacker, Bradley R ^a   Gnos, Edwin ^b  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b STANFORD UNIVERSITY   (United States)

Author keywords

Metamorphic sole; Obduction; Ophiolite; Subduction

Indexed keywords

METAMORPHIC SOLE; OBDUCTION; OPHIOLITE; SUBDUCTION; TECTONIC EVOLUTION;

OMAN, SEMAIL;

EID: 0031404385     PISSN: 00401951     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-1951(97)00114-5     Document Type: Article

References (58)

1. Allemann, F., Peters, T., 1972. The ophiolite-radiolarite belt of the North Oman Mountains. Eclogae Geol. Helv. 65, 657-697.
2. Bechennec, F., Le Metour, J., Rabu, D., Bourdillon-de-Grissac, C., de Wever, P., Beurrier, M., Villey, M., 1990. The Hawasina Nappes; stratigraphy, palaeogeography and structural evolution of a fragment of the South-Tethyan passive continental margin. In: Robertson, A.H.F., Searle, M.P., Ries, A.C. (Eds.), The Geology and Tectonics of the Oman Region. Geol. Soc. London Spec. Publ. 49, 213-223.
3. Beurrier, M., Bourdillon de Grissac, C., de Wever, P., Lescuyer, J.L., 1987. Biostratigraphie des radiolarites associées aux volcanites ophiolitiques de la nappe de Samail (Sultanat d'Oman): consequences tectogenetiques., C.R. Acad. Sci. Paris, Sér. 2 304, 907-910.
4. 5 polymorphs. Am. Mineral. 76, 677-680.
5. Boudier, F., Nicolas, A., Bouchez, J.L., 1982. Kinematics of oceanic thrusting and subduction from basal sections of ophiolites. Nature 296, 825-828.
6. Boudier, F., Bouchez, J.L., Nicolas, A., Cannat, M., Ceuleneer, G., Miseri, M., Montigny, R., 1985. Kinematics of oceanic thrusting in the Oman ophiolites: model of plate convergence. Earth Planet. Sci. Lett. 75, 215-222.
7. Boudier, F., Ceuleneer, G., Nicolas, A., 1988. Shear zones, thrusts and related magmatism in the Oman ophiolite: initiation of thrusting on an oceanic ridge. Tectonophysics 151, 275-296.
8. Bucher, M., 1991. Mineral equilibria in metagabbros: evidence for polymetamorphic evolution of the Asimah Window, northern Oman Mountains, United Arab Emirates. In: Peters, T., Nicolas, A., Coleman, R.G. (Eds.), Ophiolite Genesis and Evolution of the Oceanic Lithosphere. Petrology and Structural Geology 5, Kluwer Academic Publishers, Dordrecht, pp. 543-571.
9. Casey, J.F., Dewey, J.F., 1984. Initiation of subduction zones along transform and accreting plate boundaries, triple-junction evolution and fore-arc spreading centers - implications for ophiolitic geology and obduction. Geol. Soc. London Spec. Publ. 13, 269-290.
10. Ceuleneer, G., Nicolas, A., Boudier, F., 1988. Mantle flow patterns at an oceanic spreading centre: the Oman peridotites record. Tectonophysics 151, 1-26.
11. El-Shazly, A.E.-D., Coleman, R.G., Liou, J.G., 1990. Eclogites and blueschists from northeastern Oman: petrology and P-T evolution. J. Petrol. 31, 629-666.
12. 39Ar dating and petrological data. J. Geol. 100, 731-751.
13. Ernewein, M., Pflumio, C., Whitechurch, H., 1988. The death of an accretion zone as evidenced by the magmatic history of the Sumail ophiolite (Oman). Tectonophysics 151, 247-274.
14. Ghent, E.D., Stout, M.Z., 1981. Metamorphism at the base of the Samail ophiolite, southeastern Oman Mountains. J. Geophys. Res. 86, 2557-2571.
15. Glennie, K.W., Boeuf, M.G.A., Hughes-Clark, M.W., Moody-Stuart, M., Pilar, W.F.H., Reinhardt, B.M., 1974. Geology of the Oman Mountains. Verh. K. Ned. Geol. Mijnbouwkd. Genoot. Ged. 31, 423.
16. Gnos, E., 1997. Inverted pressure gradient in subophiolitic metamorphic rocks of the Semail Ophiolite. J. Metamorph. Geol. (in press).
17. Gnos, E., Kurz, D., 1994. Sapphirine-quartz and sapphirin-corundum assemblages in metamorphic rocks associated with the Semail Ophiolite (United Arab Emirates). Contrib. Mineral. Petrol. 116, 398-410.
18. Gnos, E., Nicolas, A., 1996. Structural evolution of the northern end of the Oman Ophiolite and enclosed granulites. Tectonophysics 254, 111-137.
19. Gnos, E., Peters, T., 1993. K-Ar ages of the metamorphic sole of the Semail ophiolite; implications for ophiolite cooling history. Contrib. Mineral. Petrol. 113, 325-332.
20. Goffé, B., Michard, A., Kienast, J.R., Le Mer, O., 1988. A case of obduction-related high-pressure, low-temperature metamorphism in upper crustal nappes, Arabian continental margin, Oman; P-T paths and kinematic interpretation. Tectonophysics 151, 363-386.
21. Gradstein, F.M., Agterberg, F.P., Ogg, J.G., Hardenbol, J., van Veen, P., Thierry, J., Huang, Z., 1994. A Mesozoic time scale. J. Geophys. Res. 99, 24051-24074.
22. Hacker, B.R., 1990. Simulation of the metamorphic and deformational history of the metamorphic sole of the Oman ophiolite. J. Geophys. Res. 95, 4895-4907.
23. Hacker, B.R., 1991. The role of deformation in the formation of metamorphic field gradients: ridge subduction beneath the Oman ophiolite. Tectonics 10, 455-473.
24. Hacker, B.R., 1994. Rapid emplacement of young oceanic lithosphere. Science 265, 1563-1565.
25. Hacker, B.R., Mosenfelder, J.L., 1997. Metamorphism and deformation of the sole beneath the Oman ophiolite. Earth Planet. Sci. Lett. 144, 435-451.
26. Hacker, B.R., Mosenfelder, J.L., Gnos, E., 1997. Rapid ophiolite emplacement constrained by geochronology and thermal considerations. Tectonics 15, 1230-1247.
27. Hacker, B.R., Wang, Q.C., 1995. Ar/Ar geochronology of ultrahigh-pressure metamorphism in central China. Tectonics 14, 994-1006.
28. 39Ar results. J. Metamorph. Geol. 13, 125-139.
29. Juteau, T., Ernewein, M., Reuber, I., Whitechurch, H., Dahl, R., 1988. Duality of magmatism in the plutonic sequence of the Sumail nappe, Oman. Tectonophysics 151, 107-136.
30. Lanphere, M.A., 1981. K-Ar ages of metamorphic rocks at the base of the Semail ophiolite, Oman. J. Geophys. Res. 86, 2777-2782.
31. Lippard, S.J., 1983. Cretaceous high pressure metamorphism in NE Oman and its relationship to subduction and ophiolite nappe emplacement. J. Geol. Soc. London 140, 97-104.
32. Lippard, S.J., Shelton, A.W., Gass, I.G., 1986. The ophiolite of northern Oman. Geol. Soc. London Mem., Geological Society of London, London, 178 pp.
33. Michard, A., Bouchez, J.L., Ouazzani-Touhami, M., 1984. Obduction-related planar and linear fabrics. J. Struct. Geol. 6, 39-49.
34. Michard, A., Goffé, B., Saddiqi, O., Oberhänsli, R., Wendt, A.S., 1994. Late Cretaceous exhumation of the Oman blueschist and eclogites: a two-stages extensional mechanism. Terra Nova 6, 404-413.
35. Michard, A., Le Mer, O., Goffé, B., Montigny, R., 1989. Mechanism of the Oman Mountains obduction onto the Arabian continental margin, reviewed. Bull. Soc. Géol. Fr. 5, 241-252.
36. 39Ar study of the metamorphic rocks associated with the Oman ophiolite. Tectonophysics 151, 345-362.
37. Morton, J.L., Sleep, N.H., 1985. A mid-ocean ridge thermal model; constraints on the volume of axial hydrothermal heat flux. J. Geophys. Res. 90, 11345-11353.
38. Nicolas, A., 1989. Structures of Ophiolites and Dynamics of Oceanic Lithosphere: Petrology and Structural Geology. Kluwer, Dordrecht, 367 pp.
39. Nicolas, A., Boudier, F., 1991. Rooting of the sheeted dike complex in the Oman ophiolite. In: Peters, T., Nicolas, A., Coleman, R.G. (Eds.), Ophiolite Genesis and Evolution of the Oceanic Lithosphere. Petrology and Structural Geology 5, Kluwer Academic Publishers, Dordrecht, pp. 39-53.
40. Nicolas, A., Ceuleneer, G., Boudier, F., Misseri, M., 1988. Structural mapping in the Oman ophiolites: mantle diapirism along an oceanic ridge. Tectonophysics 151, 27-55.
41. Pearce, J.A., Alabaster, T., Shelton, A.W., Searle, M.P., 1981. The Oman ophiolite as a Cretaceous arc-basin complex: evidence and implications. Philos. Trans. R. Soc. London, A 300, 299-317.
42. Pflumio, C., 1991. Evidences for polyphased oceanic alteration of the extrusive sequence of the Semail ophiolite from the Salahi block (northern Oman). In: Peters, T., Nicolas, A., Coleman, R.G. (Eds.), Ophiolite Genesis and Evolution of the Oceanic Lithosphere. Petrology and Structural Geology 5, Kluwer Academic Publishers. Dordrecht, pp. 313-352.
43. Rabu, D., 1987. Géologie de l'Autochtone des Montagnes d'Oman: La fenêtre du Jabal Akhdar. Ph.D.thesis, Université P. et M. Curie, Paris, 613 pp.
44. Rabu, D., 1993. Stratigraphy and structure of the Oman Mountains. Doc. B.R.G.M. 221, 262.
45. Rabu, D., Le Metour, J., Bechennec, F., Beurrier, M., Villey, M., Bourdilion-Jeudy de Grissac, C., 1990. Sedimentary aspects of the Eo-Apine cycle on the northeast edge of the Arabian Platform (Oman Mountains). In: Robertson, A.H.F., Searle, M.P., Ries, A.C. (Eds.), The Geology and Tectonics of the Oman Region. Geol. Soc. London Spec. Publ. 49, 49-68.
46. Robertson, A.H.F., Searle, M.P., Ries, A.C. (Eds.), 1990. The Geology and Tectonics of the Oman Region. Geol. Soc. London Spec. Publ. 49, 845 pp.
47. 39Ar laser probe study of Alpine micas (Sesia Zone, Western Alps, northern Italy). Chem. Geol. 121, 327-343.
48. Saddiqi, O., Poupeau, G., Michard, A., Goffe, B., Oberhaensli, R., 1995. Exhumation des roches metamorphiques HP-BT d'Oman; datation par traces de fission sur zircons (Exhumation of HP-LT Oman metamorphic rocks: fission track dating of zircons). C. R. Acad. Sci. Paris, Ser. II 320, 1071-1077.
49. Schaaf, F.A., Thomas, V., 1986. Les radiolaires campaniens du Wadi Ragmi (nappe du Semail, Oman); un nouveau repere chronologique de l'obduction Omanaise. C.R. Acad. Sci. Paris 303, 1593-1598.
50. Searle, M.P., 1980. The Metamorphic Sheet and Underlying Volcanic Rocks beneath the Semail Ophiolite in the Northern Oman Mountains of Arabia. Ph.D. dissertation, Open University, U.K..
51. Searle, M.P., Lippard, S.J., Smewing, J.D., Rex, D.C., 1980. Volcanic rocks beneath the Semail ophiolite nappe in the northern Oman Mountains and their significance in the Mesozoic evolution of the Tethys. J. Geol. Soc. London 137, 589-604.
52. Searle, M.P., Malpas, J., 1980. Structure and metamorphism of rocks beneath the Semail ophiolite of Oman and their significance in ophiolite obduction. Trans. R. Soc. Edinburgh 71, 247-262.
53. Searle, M.P., Malpas, J., 1982. Petrochemistry and origin of sub-ophiolitic metamorphic and related rocks in the Oman Mountains. J. Geol. Soc. London 139, 235-248.
54. Searle, M.P., Waters, D.J., Martin, H.N., Rex, D.C., 1994. Structure and metamorphism of blueschist-eclogite facies rocks from the northeastern Oman Mountains. J. Geol. Soc. London 151, 555-576.
55. Tilton, G.R., Hopson, C.A., Wright, J.E., 1981. Uranium-lead isotopic ages of the Samail ophiolite, Oman, with applications to Tethyan ocean ridge tectonics. J. Geophys. Res. 86, 2763-2775.
56. Tippit, P.R., Pessagno, E.A.Jr., Smewing, J.D., 1981. The biostratigraphy of sediments in the volcanic unit of the Samail ophiolite. J. Geophys. Res. 86, 2756-2762.
57. Warburton, J., Burnhill, T.J., Graham, R.H., Isaac, K.P., 1990. The evolution of the Oman Mountains foreland basin. In: Robertson, A.H.F., Searle, M.P., Ries, A.C. (Eds.), The Geology and Tectonics of the Oman Region. Geol. Soc. London Spec. Publ. 49, 419-427.
58. Wendt, A.S., D'Arco, P., Goffé, B., Oberhänsli, R., 1993. Radial cracks around α-quartz inclusions in almanide: constraints on the metamorphic history of the Oman Mountains. Earth Planet. Sci. Lett. 114, 449-461.