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Геология России: Recent submissions
Now showing items 1381-1400 of 41109
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(2006)Magic-Angle-Spinning Nuclear Magnetic Resonance (MAS-NMR) spectroscopy was used to probe the crystallographic environment of Si, Al, F and H in 14 natural talc samples originating from different localities and containing ...
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(2006)The Tyrrhenian margin of the Apennine chain (TMAC) experienced widespread extensional tectonics characterized by volcanism and the formation of several marine and intermontane troughs and basins in Pleistocene times. The ...
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(2006)We carried out a systematic study of spinel group minerals in LL3.00-3.9 and LL4-6 chondrites. With increasing petrologic type, the size and abundance of spinel increase. The compositions of spinel group minerals in type ...
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(2006)Large amount of geological research indicates that there are series Cu-Ni sulphide deposits in south central Jilin Province, eastern portion of the Xing'an-Mongolian Orogenic belt, North China. Hongqiling Cu-Ni sulphide ...
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(2006)A thermodynamic model to predict phase equilibrium of methane and carbon dioxide hydrate in aqueous electrolyte solutions is presented. Using the Pitzer model to account for the variation of water activity due to electrolytes ...
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(2006)The evolution of Tethyan phosphogenesis during the Cretaceous-Eocene is examined to try to explain fluctuations of phosphogenesis through time, and whether or not they reflect long-term changes in ocean circulation or in ...
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HELIUM ISOTOPIC COMPOSITION OF HYDROTHERMAL FLUIDS FROM THE MANUS BACK-ARC BASIN, PAPUA NEW GUINEA (2006)We present isotopic analysis of helium in hydrothermal fluids from the Manus back-arc basin, collected during the French-Japanese Manusflux and Manaute cruises in 1995 and 2000, respectively. The helium isotope composition ...
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(2006)Studies of the respiratory health effects of different types of volcanic ash have been undertaken only in the last 40 years, and mostly since the eruption of Mt. St. Helens in 1980. This review of all published clinical, ...
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(2006)The pore geometry of texturally equilibrated rocks is controlled by the interfacial energy ratio between grain boundaries and solid-liquid boundaries. Faceting at pore walls, which is a common feature of pore networks in ...
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(2006)There is a variety of methodologies used in the aquatic sciences and soil sciences for extracting different forms of Si from sediments and soils. However, a comparison of the published extraction techniques is lacking. ...
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(2006)Configurational entropy has been linked with the structure of Na2O-CaO-SiO2 melts, based on combined viscosimetry and Raman spectroscopic investigations. From viscosity measurements at low and high temperatures, we have ...
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(2006)The present study tested grain-size dependence of thermoremanent magnetization (TRM)/saturation isothermal remanent magnetization (SIRM) as well as its stability against demagnetization. The TRM/SIRM ratio is dependent on ...
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(2006)The La Guitarra deposit (Temascaltepec district, South-Central Mexico), belongs to the low/intermediate sulfidation epithermal type, has a polymetallic character although it is currently being mined for Ag and Au. The ...
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(2006)We report results of an experimental study on platinum-group elements (PGE) and Au mass transfer by an S-vapor in the Fe-Ni-Cu sulfide system at magmatic temperatures. Using the tube-in-tube technique, we have examined the ...
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(2006)The Kverkfjöll area, NE Iceland is characterised by subglacial basalt pillow lavas erupted under thick ice during the last major glaciation in Iceland. The water contents of slightly vesiculated glassy rims of pillows in ...
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(2006)Natural ferrihydrite (Fh), a poorly crystalline iron oxy-hydroxide with high concentrations of As, was investigated with respect to its crystallinity in a remediated mining environment. The Fh crystallinity increases from ...
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(2006)"Non-volcanic" rifted margins exhibit very little evidence of synrift magmatism, even where the continental crust has been thinned to such an extent that the mantle has been exhumed across a transitional zone (up to ~100 ...
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(2006)The structures of one synthetic and two natural chlorites of the chlinochlore type were explored using X-ray diffraction, magic-angle spinning nuclear magnetic resonance (NMR) and Mössbauer spectroscopy. Rietveld refinements ...
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(2006)The Kohistan arc, situated in the Pakistan Himalaya, is a Cretaceous intraoceanic island arc which was initiated during the northward movement of the Indian Plate. The arc was sutured to Asia at ca. 100 Ma. It was subsequently ...
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(2006)Estimates of glacial sediment delivery to the oceans have been derived from fluxes of meltwater runoff and iceberg calving, and their sediment loads. The combined total (2900 Tg yr-1) of the suspended sediment load in ...
Now showing items 1381-1400 of 41109