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Геология России: Recent submissions
Now showing items 861-880 of 41109
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(2006)Silicic volcanic deposits (>65 wt% SiO2), which occur as domes, lavas and pyroclastic deposits, are relatively abundant in the Macolod Corridor, SW Luzon, Philippines. At Makiling stratovolcano, silicic domes occur along ...
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(2006)The origin of low-volume, hotspot-like volcanism often observed in continental rift areas is debated, as is the nature of the flow in the mantle beneath. In this paper we assemble seismic constraints on the mantle flow ...
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(2006)Groundwaters were collected around the Spence porphyry copper deposit, Atacama Desert, northern Chile, to study water-porphyry copper ore bodies interaction and test hypotheses regarding transport of metals through thick ...
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(2006)Experiments have been carried out on a metagreywacke at 800, 850 and 900°C, in the pressure range 0.5-5 GPa to locate the solidus and the eclogite/amphibolite facies transition in felsic rocks, identify the nature of the ...
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(2006)Sediment cores retrieved in the Benguela coastal upwelling system off Namibia show very distinct enrichments of solid phase barium at the sulfate/methane transition (SMT). These barium peaks represent diagenetic barite ...
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(2006)The Weches Formation of the Claiborne Group (Eocene) in northeast Texas consists of clayey sandstones and mudrocks, both with variable proportions of dark green to brown clay peloids deposited in a marginal to open marine ...
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(2006)A transport-reaction model was designed to identify the combination and importance of biogeochemical processes operating in four sites drilled during ODP Leg 207 (Demerara Rise, Equatorial Atlantic). Almost 100 Ma after ...
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(2006)The high-temperature dehydroxylation and structural change of talc, Mg3(Si2O5)2(OH)2, has been investigated in detail using infrared (IR) spectroscopy. The data (in the region of 20-12000 cm-1) on quenched samples show ...
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(2006)The Mississippian Madison Formation contains abundant fracture zones and breccias that are hydrothermal in origin based on their morphology, distribution, and geochemical signature. The hydrothermal activity is related to ...
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(2006)Alunite and jarosite from Goldfield, Nevada, show spectacular relationships between early alunite and later jarosite. In some cases, jarosite overgrows alunite with the same crystallographic orientation and sharp contacts. ...
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(2006)The importance of the discovery of jarosite at the Meridiani Planum region of Mars is discussed. Terrestrial studies demonstrate that jarosite requires a unique environment for its formation, crystallizing from highly ...
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(2006)Arsenic derived from mining activity may contaminate water, soil and plant ecosystems resulting in human health and ecotoxicological risks. In this study, exposure assessment of arsenic (As) in soil, spoil, pondwater and ...
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(2006)Soil organic matter (OM) can be stabilized against decomposition by association with minerals, by its inherent recalcitrance and by occlusion in aggregates. However, the relative contribution of these factors to OM ...
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(2006)Geologic maps have long portrayed the Late Cretaceous-Recent geologic history of southeastern Mongolia as tectonically quiescent. We present new data based on outcrop observations that indicate the northeast-trending East ...
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(2006)Thermal rock properties were determined for the Northeast German Basin, a subbasin of the southern Permian basin in Europe. The new thermal data provide new aspects for the determination of heat flow and for hydrocarbon ...
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(2006)We document the compositions of co-existing silicate macro-inclusions and fluid micro-inclusions in the fibrous coats of eight coated diamonds from the Panda kimberlite (Canada). The mineral inclusions in the diamond coats ...
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(2006)Thirty five minor and trace elements (Li, Be, B, Sc, Cu, Zn, Ga, Ge, As, Rb, Nb, Mo, Ag, Cd, In, Sn, Sb, Cs, Ba, La, Ce, Nd, Sm, Tb, Ho, Tm, Lu, Hf, Ta, W, Tl, Pb, Bi, Th and U) in experimentally produced near-liquidus ...
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(2006)Light-induced structural changes in single crystals belonging to the β-As4S4-As8S9 series and in a crystal of synthetic β-AS4S3 were monitored step by step by determining the unit-cell dimensions. A marked increase of ...
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(2006)Water erosion creates negative impacts on agricultural production, infrastructure, and water quality across the world. Regional-scale water erosion assessment is important, but limited by data availability and quality. ...
Now showing items 861-880 of 41109