Its lower part consists predominantly of metabasic rocks together with minor felsic granulites, its upper part of metapelites with minor metabasic and metacarbonate …
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The Saxonian Granulite Massif is located at the northern margin of the Saxo-Thuringian Zone of the peri-Gondwana Bohemian Massif. Eight felsic and mafic granulites were studied with respect to their geochemistry and U Pb zircon geochronology.The felsic granulites are interpreted to be derived from continental crust …
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Here we performed a series of deformation experiments on synthetic felsic granulite (65% plagioclase + 15% quartz + 9% clinopyroxene + 6% orthopyroxene + 5% amphibole) using a 5 GPa modified Griggs-type deformation apparatus at 827–927°C and 1 GPa. All experiments have reached a steady-state creep under conditions of constant …
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In this paper, we focus on the felsic gneiss that has been previously documented as having formed under HP granulite-facies metamorphism with peak P–T of >1.15 GPa and >860 °C from the ...
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This ancient lower crust experienced partial melting during the Mesozoic to produce the voluminous felsic magmatic rocks, with most mafic graulite xenoliths representing the restites. The intermediate-felsic granulite xenoliths and a few mafic granulite xenoliths may come from the upper lower crust and they did not experience …
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Detailed microstructural, microfabric and chemical analyses of felsic granulite within and around a ductile shear zone at the Plešovice quarry in the southern Bohemian Massif revealed deformation-induced, retrograde transformation of kyanite to andalusite.Although andalusite is absent outside the shear zone, its fraction among Al 2 …
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High pressure granulite and granulite gneiss from the Rychleby Mountains in the East Sudetes form an approximately 7 km long and 0.8 km wide body, which is enclosed by amphibolite facies orthogneiss with a steep foliation.Well preserved felsic granulite is located in the central part of the body, where several small bodies of mafic …
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ABSTRACT "This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)." Intellectual Merit. The Athabasca granulite terrane, Saskatchewan, Canada is one of Earth's largest exposures of intact lower continental crust, and offers the opportunity to see first-hand the complexity of magmatic processes that …
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To better constrain the above issue, we conducted field investigation and identified some new felsic granulites in the Taipingzhai area of the Eastern Hebei …
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The mafic granulite (Wang et al., 2012) and the felsic granulite studied here are nearly one to two orders of magnitude softer …
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{"payload":{"allShortcutsEnabled":false,"fileTree":{"124":{"items":[{"name":"1 dampak palu crusher okd 1156.md","path":"124/1 dampak palu crusher okd 1156.md ...
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Granulite (felsic) Granulite: Granulite is a high-grade metamorphic rock in which Fe-Mg-silicates are dominantly hydroxyl-free; the presence of feldspar and the absence of primary muscovite are critical, cordierite may also be present.The mineral composition is to be indicated by prefixing the major constituents. The rocks with >30% mafic minerals …
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ALEX STREKEISEN Felsic Granulite Granulite is a high grade metamorphic rock in which Fe Mg silicates are.with <30% mafic minerals (dominantly pyroxene) may be called felsic granulites. sbm double belt grinding machine 2 type sez 6 300. sbm marble run set gold mine. sbm china rolling mill. sbm rock orthoamphibole crusher rsa
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The Himalayan-Tibetan orogen experienced extensive thermal disturbance during the Indian-Asian collision, yet evidence for ultrahigh-temperature metamorphism (UHTM, >900 °C) remains scant. We report a UHTM event in the Lhasa Block, identified from felsic granulite xenoliths in Sangsang near the Tangra Yum Co Rift (TYR) of …
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Mesozoic zircons from different types of granulite xenoliths have a narrow range of δ 18 O values (6.0–7.7‰) higher than normal mantle δ 18 O values (∼5.7‰). Mesozoic intermediate–felsic igneous rocks have O and Pb isotopic compositions indistinguishable from the Hannuoba intermediate–mafic granulite xenoliths.
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Download scientific diagram | Fractionation-composition plot for the sample 68b (felsic garnet-kyanite granulite). Abbreviations as in Fig. 1. from publication: Geothermometry of the ultrahigh ...
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The chips were then crushed in a carborundum jaw crusher (to 60 mesh). ... The Xinyang felsic granulite xenoliths contain quartzofeldspathic relics (mainly 1.5–10 mm in size), lie close to the tieline between plagioclase and K-feldspar and near the field of typical igneous rocks from the NCC (Fig. 3), and show positive D.F. values (Table 1). ...
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Request PDF | Ultrahigh-temperature metamorphism revealed by felsic granulite xenoliths in southern Tibet | The Himalayan-Tibetan orogen experienced extensive thermal disturbance during the Indian ...
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