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Browsing ELibrary by Title
Now showing items 12611-12630 of 21253
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(2001)It has long been recognized that mare basalts on the Moon are preferentially located both on the Earth-facing hemisphere and within large impact basins. A popular model that accounts for this observation assumes that these ...
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(2002)Sorption of a series of toluene-solvated porphyrins with differing structural characteristics and metallic centers [i.e. free-base, Cu(II), Ni(II) and VO(II)] onto Na-montmorillonite was measured to determine how this clay ...
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(2004)Recent measurements of slip profiles on normal faults have found that they are usually triangular in shape. This has been explained to be a consequence of on-fault processes such as slip-dependent friction. However, the ...
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(1990)We present a simple model of3He and4He transport in the mantle using the appropriate rates of mass and species transfer and4He production. Previous workers have shown the presence of excess3He in hotspots such as Hawaii ...
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(1996)We present a quantitative model for in situ crystallization within a solidification zone (or boundary layer) based on the trace and major element compositions of plutonic igneous rocks and related geochemical data. We ...
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THE ROLE OF RIFTING IN THE EVOLUTION OF THE CONTINENTAL MARGIN OF EASTERN ASIA: GEOPHYSICAL EVIDENCE (1992)The role of rift processes is analysed in the structural evolution of the continental margins of Eastern Asia including the Indo-China Peninsula and North China plain. Paleoreconstructions were made for the Indo-China ...
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(2003)The role of secondary minerals in controlling the migration of As, Cu, Zn, Pb and Cd has been investigated in piles of high-sulfide waste at the Berikul Au mine, Kemerovo region, Russia. These wastes contain 40–45 wt.% ...
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(1997)The role of viscous heating in mantle flows has been studied within the framework of a steady-state, two-dimensional cartesian model with a composite non-Newtonian and Newtonian rheology. There is temperature-dependence ...
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(2001)Sodium silicate melts of the composition Na2O · RSiO2 (R = 3, 4) with varying water contents were studied by 1H and 23Na NMR. It was found that Na+ occurs in sodium silicate melt in two coordinations: (1) covalently bonded ...
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(2001)The central area of the Russian Plain received substantial amounts Cs-137 fallout as a result of the Chernobyl accident in 1986, with inventories exceeding 40 kBq m−2 in many of the areas close to Chernobyl. Concern over ...
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(2003)The attributes of about 13,600 hard-rock water wells were arranged in three profiles parallel to gradients of typical regional factors. These factors are thought to be of importance to groundwater yield from wells in the ...
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(2002)Presents an abstract of the article 'The Role of Striations in Pyrite Crystal Growth,' by B. Morgan presented at the 28th Rochester Mineralogical Symposium.
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(1998)Pyrrhotite, in anoxic acidic conditions, exhibits an induction period before rapid dissolution occurs. The length of the induction period is controlled by the amount of surface oxidation products on the mineral surface, ...
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(1998)Pyrrhotite, in anoxic acidic conditions, exhibits an induction period before rapid dissolution occurs. The length of the induction period is controlled by the amount of surface oxidation products on the mineral surface, ...
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(2001)On sand and gravel beaches, the increase of the gradient of the beachface with increasing sediment size has been attributed to swash infiltration. The present study uses a process-based numerical model to examine in detail ...
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(2003)The geological record indicates that stages of relatively steady plate motion have been punctuated by comparatively brief periods in which plate velocities have reorganized. The distribution of buoyancy sources in the ...
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(2001)In 1989–1990 the SeaMARC II side-looking sonar and swath bathymetric system imaged more than 80 000 km2 of the seafloor in the Norwegian-Greenland Sea and southern Arctic Ocean. One of our main goals was to investigate the ...
Now showing items 12611-12630 of 21253