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Геология России: Recent submissions
Now showing items 1301-1320 of 40749
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(2006)The Dexing adakitic porphyries (quartz diorite–granodiorite porphyries), associated with giant porphyry Cu deposits, are located in the interior of a continent (South China). They exhibit relatively high MgO, Cr, Ni and ...
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(2006)A composite intrusive igneous complex in the central mountain range of Queen Maud Land (Thor Range), Antarctica, displays characteristic features of anorogenic granites. A suite of massive intrusives and various sets of ...
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(2006)Kimberlite pipes or dykes tend to occur in clusters (a few kilometres in diameter) within fields ?30–50?km in diameter. They are generally considered to originate from low degrees of partial melting of carbonated peridotite ...
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(2006)The volume %, distribution, texture and composition of coexisting olivine, Cr-spinel and glass has been determined in quenched lava samples from Hawaii, Iceland and mid-oceanic ridges. The volume ratio of olivine to spinel ...
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(2006)Anatectic veins containing the Be minerals khmaralite and beryllian sapphirine as primary phases (or surinamite derived therefrom) are associated with Mg–Al-rich paragneisses at three localities in the ultrahigh-temperature ...
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(2006)Eclogite xenoliths from the Colorado Plateau, interpreted as fragments of the subducted Farallon plate, are used to constrain the trace element and Sr–Nd–Pb isotopic compositions of oceanic crust subducted into the upper ...
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(2006)A suite of mafic dykes from the Underberg region of southern KwaZulu-Natal (South Africa) were intruded at ?178?Ma, coincident in age with the major Okavango Dyke Swarm of Botswana, and also coincident with minor Karoo-related ...
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(2006)The direct synthesis of zeolites in polluted soils has proved to be a promising process for the stabilization of metals inside these minerals. Nevertheless, more detailed information about this process is still needed in ...
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(2006)Different lithologies (impure marble, eclogite and granitic orthogneiss) sampled from a restricted area of the coesite-bearing Brossasco–Isasca Unit (Dora Maira Massif) have been investigated to examine the behaviour of ...
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(2006)In situ laser ablation inductively coupled plasma mass spectrometry analysis of trace elements, U–Pb ages and Hf isotopic compositions of magmatic zircon from I- and S-type granitoids from the Lachlan Fold Belt (Berridale ...
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(2006)Site 1201D of Ocean Drilling Program Leg 195 recovered basaltic and volcaniclastic units from the West Philippine Basin that document the earliest history of the Izu–Bonin–Mariana convergent margin. The stratigraphic section ...
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(2006)The near-liquidus crystallization of a high-K basalt (PST-9 golden pumice, 49·4 wt % SiO2, 1·85 wt % K2O, 7·96 wt % MgO) from the present-day activity of Stromboli (Aeolian Islands, Italy) has been experimentally investigated ...
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(2006)Many basaltic flood provinces are characterized by the existence of voluminous amounts of silicic magmas, yet the role of the silicic component in sulphur emissions associated with trap activity remains poorly known. We ...
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(2006)The Sete Cidades volcano (Sao Miguel, Azores) is situated at the eastern end of the ultraslow spreading Terceira rift axis. The volcano comprises several dominantly basaltic pre-caldera eruptions, a trachytic caldera-forming ...
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(2006)We report the occurrence of unusual, high-magnesium (Fo96) olivine phenocrysts in a basaltic lava and an ejected lithic block from the Upper Vancori period (?13 ka) and the recent activity (2002–2003) of Stromboli volcano, ...
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(2006)Komatiites from the ?2?Ga Jeesiorova area in Finnish Lapland have subchondritic Al2O3/TiO2 ratios like those in Al-depleted komatiites from Barberton, South Africa. They are distinct in that their Al abundances are higher ...
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(2006)Pressure–temperature grids in the system Na2O–CaO–K2O–FeO–MgO– Al2O3–SiO2–H2O and its subsystems have been calculated in the range 15–45?kbar and 550–900°C, using an internally consistent thermodynamic dataset and new ...
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(2006)Uranium-series (U-series) analyses are an essential component of many research projects in Earth and environmental science, oceanography, hydrology and science-based archaeology. Topics range from magma chamber evolution ...
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(2006)Major- and trace-element data on the constituent minerals of garnet peridotite xenoliths hosted in early Paleozoic (457–500?Ma) kimberlites and Neogene (16–18?Ma) volcanic rocks within the North China Craton are compared ...
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(2006)Xenoliths hosted by Quaternary basanites and alkali basalts from Marsabit (northern Kenya) represent fragments of Proterozoic lithospheric mantle thinned and chemically modified during rifting in the Mesozoic (Anza Graben) ...
Now showing items 1301-1320 of 40749