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Browsing ELibrary by Title
Now showing items 6273-6292 of 21934
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(1998)Felsic magmas may evolve one or more water or chlorine-rich fluid phases which can transport heat and solutes into associated hydrothermal systems and can contribute to alteration and ore deposition. To understand the role ...
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(2002)Fine grained rodingite-like rocks containing epidote, clinozoisite, garnet, chlorite, phengite and titanite occur within antigorite serpentinite boudins from the high-pressure metamorphic Maksyutovo Complex in the Southern ...
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(1997)A database of published information was compiled to develop K-U-Th systematics of oceanic island-arc (OIA) volcanic rocks. In order to obtain a pure case of subduction-related oceanic volcanism, the data set for the OIA ...
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(1998)Kalifersite, (K, Na)5(Fe3+)7[Si20O50](OH)6 · 12H2O, is a new [001] fibrous silicate discovered in a drill core of a hydrothermally altered pegmatite in the urtite series at Mt. Kukisvumchorr (Kola Peninsula). The new mineral ...
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(2004)Sedimentary basins developed along the European margin during the earliest, Permian, stage of proto-Atlantic rifting, during a phase of high heat flow. The proximity of some basins to Caledonian thrusts has implied that ...
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(1989)The tracing of the geochemical evolution of carbonate deposits in the earth's history is a major scientific problem. Our understanding of this evolution is in inverse relation to the age of sedimentary sequences. However, ...
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(1999)The ca. 2.0-Ga-old, 600-m-thick upper Zaonezhskaya Formation near Lake Onega, NW Russia, contains unusually high concentrations of Corg (up to 98%), averaging around 25%. The formation contains an estimated 25×1010 tonnes ...
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KARPINSKIOSAURUS ULTIMUS (SEYMOURIAMORPHA, PARAREPTILIA) FROM THE UPPER PERMIAN OF EUROPEAN RUSSIA (2002)The genus Raphanodon Ivachnenko, 1987 (Leptorophidae, Seymouriamorpha) is not a valid taxon, since its type species Nycteroleter ultimus Tchudinov et Vjuschkov, 1956 is assigned to the genus Karpinskiosaurus. The cranial ...
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(2001)The paper is devoted to the karst role in the formation of aureoles of kimberlite indicator minerals (KIM) and diamond placers in the modern alluvium of the Muna-Markha interfluve. Its territory is open, i.e., the Lower ...
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(1989)Most oil and gas pools found in the Lena-Tunguska oil and gas province of the Siberian craton are known to be confined to granular or fractured-granular reservoir rocks in clastic sandstone-siltstone strata. Such rocks ...
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(2003)The seismic CMP is the main method of the geological sections study in the Black Sea, because drilling data on the deep basin part are scarce. Accordingly, stratigraphic subdivisions of sedimentary cover can be defined and ...
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(1999)Most of the Kharchinskii and Zarechnyi products, as well as those of the Kharchinskii cinder cones, are magnesian rocks. Mineralogical data suggest that both the basaltic and the andesitic magma were rich in water (≥3-4 ...
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(1999)This paper presents the results of studying the spatial distribution and structural setting of magnesian basalts and andesites in the Northern group of Kamchatkan volcanoes and in the junction zone of the Kuril-Kamchatka ...
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KIMBERLITE MELTS RICH IN ALKALI CHLORIDES AND CARBONATES: A POTENT METASOMATIC AGENT IN THE MANTLE (2004)Kimberlite magmas, as the deepest probe into Earth's mantle (>150 km), can supply unique information about volatile components (hydrogen, carbon, chlorine, sulfur) in mantle-derived melts and fluids. All known kimberlite ...
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(2004)A combined petrological, geochemical, and mineralogical study of Kimberlites of eastern Priazov'e was described. A reliable criteria for the identification of these rocks, to characterize their sources, and to assess their ...
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KINEMATIC AND ANALOG MODELING OF 3-D EXTENSIONAL RAMPS: OBSERVATIONS AND A NEW 3-D DEFORMATION MODEL (2002)We present results of kinematic and dry-sand analog models of hanging wall folding over an extensional ramp-flat system containing complementary strike bends. The kinematic models illustrate that differential structural ...
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(2001)An analysis was made of kinematic and morphometric characteristics of zones of overlapping spreading centers - structures illustrative of spreading ridges with fast and intermediate spreading rates. Three levels of overlap ...
Now showing items 6273-6292 of 21934