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Xenolith-bearing alkaline ultrabasic dykes were intruded into the Hercynian basement of the Spanish Central System in early Mesozoic times. The suite of lower-crustal xenoliths in the dykes can be divided into three groups: felsic peraluminous granulites, metapelitic granulites and charnockitic...
Coeval silicate melt and aqueous synthetic fluid inclusions were formed at 800°C and 2000 bars in the quartz-saturated haplogranite-H 2 O-NaCl-KCl system. The equilibrium assemblage consisted of Ab 19·2 Or 31·1 Qtz 49·1 melt, quartz, and an aqueous solution with a composition of 7·4 wt %...
The effect of temperature on water solubility in rhyolite melt was experimentally determined at 850-1200°C and 22-100 MPa. A natural high-silica rhyolite glass was equilibrated with pure water vapor, and the water content in the quenched glass was determined by IR spectroscopy. The results...
Upper Palaeozoic silicic magmatism is widespread in the Central Andes, but its origin is poorly constrained. We investigated whole-rock chemical and isotopic composition of Upper Palaeozoic granitoids and their Early Palaeozoic high-grade country rocks in the Chilean Coastal Cordillera and...
Field relations, and zircon zoning and SHRIMP U-Pb patterns from an outcrop of deformed pelitic migmatites reveal relationships between leucosome type and the amount of zircon growth during migmatization. Zircons from the oldest, stromatic migmatites show several 207 Pb/ 206 Pb intragrain...
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