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Browsing ELibrary by Title
Now showing items 4618-4637 of 21934
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(2002)Berman's (1983) activity-composition model for CaO-MgO-Al2O3-SiO2 liquids is used to calculate the change in bulk chemical and isotopic composition during simultaneous cooling, evaporation, and crystallization of droplets ...
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(2003)Ringwoodite, a compact modification of olivine (γ-olivine), was experimentally synthesized under static loads (within the interval 6-24 GPa, depending on the composition and the olivine-ringwoodite conversion temperature) ...
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(1990)In the study of the continental margins by marine seismic exploration methods, it has been established that the shelf and continental slope of many passive margins contain widespread evaporite associations and salt-diapir ...
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(2004)We have developed a coupled model for sill emplacement in sedimentary basins. The intruded sedimentary strata are approximated as an elastic material modelled using a discrete element method. A non-viscous fluid is used ...
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(2003)The interpretation of fault kinematics from geometric data is an essential step in developing an understanding of the growth of fault systems. Constraints on fault geometry are, however, often restricted to 2-D maps or ...
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(1998)Magnetite is a common product of bacterial iron reduction and may serve as a potential physical indicator of biological activity in geological settings. Here we report the formation of single-domain magnetite under laboratory ...
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(2001)Thermal decomposition of natural hydrotalcites HT and the role of hydrotalcite-like materials in the destruction of solid Ž. with a spinel-type structure, after grinding with solid phase Na CO additives, are investigated ...
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(1989)For the Baltic shale basin, we consider an example in which decomposition of caustobioliths (combustible shales), accompanied by generation of sulfide sulfur, predetermined the formation of sulfide mineralization. This ...
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(2002)The Late Paleozoic structure and evolution of the Gorny Altai-West Sayan junction is considered on the basis of geochronology and structural data obtained by morphological, stereometric, and microstructural methods. The ...
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(2001)Forward and reverse numerical modeling was applied in studies of structure and stratigraphic features of the syn-rift (Late Devonian) and early post-rift (Carboniferous) evolution of the SE Dnieper-Donets depression (DDD). ...
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(2003)Discoveries made during the past several decades in the field that may be defined as bacterial paleontology in the broad sense have given rise to modern views on the evolution of the geosphere-biosphere system. This has ...
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(2001)This paper applies the Hamiltonian Approach (HA) to two-dimensional motions of incompressible fluid in curvi-linear coordinates, in particular on a sphere. The HA has been used to formulate governing equations of motion ...
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(2005)We found thirty compound chondrules in two CV3 carbonaceous chondrites. The abundance in each meteorite relative to single chondrules is 29/1846 (1.6%) in Allende and 1/230 (0.4%) in Axtell. We examined petrologic features, ...
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(1997)Pyrite framboid formation may be the result of four consecutive processes: (1) nucleation and growth of initial iron monosulfide microcrystals; (2) reaction of the microcrystals to greigite (Fe3S4; (3) aggregation of ...
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(2001)Rb-Sr and Sm-Nd isotopic systems were investigated in the peralkaline granitoids and comagmatic volcanic rocks, which compose the Northern Mongolia-Transbaikalia Belt (NMTB). The belt extends over more than 2000 km at a ...
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(2004)The main objective is the study of the correlation between the electric parameters of high-temperature conductivity of ultramafics pertaining to lithostructural complexes of different rock associations.
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(1987)Former diamond-bearing lherzolite consists of primary (olivine, ortho- and clinopyroxene, plagioclase, pargasite, phlogopite, ceylonite, ilmenite and sulfides) and superimposed (amphibole, calcite, phlogopite, apatite, ...
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(1989)One important aspect in studying how secondary dispersion halos and trains develop is to investigate the forms in which various chemical elements occur in them. We discuss the results of our study of the forms of gold in ...
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(2004)Groundwater flow in an unconfined aquifer (a porous layer with an open top) can be driven either by hydraulic forces, i.e. the gradient of the water table, or by differences in the density of porewater due to thermal ...
Now showing items 4618-4637 of 21934