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petrogenesis of leucogranitic dykes intruding the northern Semail ophiolite, United Arab Emirates: ®eld relationships...Abstract The Khawr Fakkan block of the Semail ophiolite (United Arab Emirates) exhibits a suite of 10± 100...that the subduction of continental sedimentary material beneath the hot proto-ophiolite in an intra-oceanic...the generation of granitic melts which were emplaced up to the level of the ophiolite Moho. Compositions...that crystallised at variable aH2 O and pressures of 3 to 5 kbar. The LILE (Sr, Rb and Ba) covariation |
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metamorphic rocks associated with the Semail Ophiolite (United Arab Emirates) Edwin Gnos* and Daniel Kurz M...imbricated with the Cretaceous Semail Ophiolite in the United Arab Emirates and Oman. Peak metamorphic assemblages...assemblages in highly oxidized lithologies of these rocks include sapphirine (7 : 9 : 3)-hercynitic ...assemblages in quartzitic rocks are an example of overlapping stability of sapphirine-quartz and spinel-quartz and...types of sapphirine occur within the stability field of Mgrich cordierite. The common association of sapphirine |
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from a granulite-facies manganese rock of the United Arab Emirates Received: 31 May 1 9 9 4 / A c c e p...in the Khawr Fakkan massif near the northern end of the Semail Ophiolite, United Arab Emirates (U.A.E...The galaxite shows approximately 35% solid solution of hausmannite, similar to that reported for jacobsite...the solid solution of galaxite in hausmannite is maximally 7 %. The assemblage of tephroite-hausmannite...indicates a restricted log fo2 of - 9 to - 11 which is outside the stability of braunite under similar physico-chemical |
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Springer-Verlag1993 K-Ar ages of the metamorphic sole of the Semail Ophiolite: implications for ophiolite cooling history...squeezed into the mantle sequence of the Semail Ophiolite. The hornblende ages of 99 + 0.5 and 102 • 0.8 Ma and...and the 90 Ma ages of coexisting micas from the high-grade metamorphic portion of the sequence are interpreted...interpreted as cooling stages following the peak of metamorphism ( T 800-850 ~ C, P 6.5-9 kbar). The new...new pressure estimates are based on findings of kyanite in garnet-amphibolite and cordierite in quartzitic |
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the United Kingdom Subduction zone metamorphism during formation and emplacement of the Semail ophiolite...Mountains MICHAEL P. SEARLE* & JON COX *Department of Earth Sciences, Oxford University, Parks Road, Oxford...– The metamorphic sole along the base of the Semail ophiolite in Oman records the earliest thrust slice...to the base of the ophiolite mantle sequence. In the Bani Hamid area (United Arab Emirates) a c. 870 m...thrust slice of granulite facies rocks includes garnet + diopside amphibolites, enstatite + cordierite |
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Peraluminous, potassium-rich granitoids in the Semail Ophiolite Received: 15 August 1993 / Accepted: 11 July...stocks in the uppermost part of the mantle sequence of the Semail ophiolite, predominantly in the northern...conditions of andalusite-cordierite bearing pegmatoidal granites were calculated, giving pressures of 1.8-2...8-2.2 kbar and a solidus within the stability field of andalusite. Hydrothermal experiments on five natural...compositions. Potassic granites in the ophiolite can be the result of extreme fractional crystallization |
| Cárdenas-Párraga, J., García-Casco, A., Proenza, J. A., Harlow, G. E., Blanco-Quintero, I. F., Lázaro, C., Villanova-de-Benavent, Cristina, Núñez Cambra, K. (2017) Trace-element geochemistry of transform-fault serpentinite in high-pressure subduction mélanges (eastern Cuba): implications for subduction initiation. International Geology Review, 59 (16) 2041-2064 doi:10.1080/00206814.2017.1308843 | Journal (article/letter/editorial) |
tandfonline.com/loi/tigr20 Trace-element geochemistry of transformfault serpentinite in high-pressure subduction...K. Núñez Cambra (2017): Traceelement geochemistry of transform-fault serpentinite in high-pressure subduction...articles View Crossmark data Full Terms & Conditions of access and use can be found at http://www.tandfonline...2017.1308843 ARTICLE Trace-element geochemistry of transform-fault serpentinite in high-pressure subduction...Barcelona, Spain; dDepartment of Earth and Planetary Sciences, American Museum of Natural History, New York |