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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...peraluminous granitic intrusions, ranging from cordierite-andalusite-biotite monzogranites to garnet-tourmaline...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 |
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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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| 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...estimates are based on findings of kyanite in garnet-amphibolite and cordierite in quartzitic rocks. These |
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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 |
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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...slice of granulite facies rocks includes garnet + diopside amphibolites, enstatite + cordierite + sillimanite |
