Browsing ELibrary by Title
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- Browsing ELibrary by Title
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing ELibrary by Title
Now showing items 3740-3759 of 21934
-
(2003)We revisit a number of important topics associated with the problem of interactions between surface and subsurface processes during syn- and post-rift evolution. To demonstrate the importance of these interactions and to ...
-
(2003)Problems are formulated that can be solved by error analysis of the method of double-spike mass spectrometry of solid phases. General relations were derived for the calculation of the errors of the method for elements with ...
-
(2000)This paper presents the results of a detailed study of pyroclastic deposits produced on Bezymyannyi Volcano on March 30, 1956: composition, stratigraphy, grain size, mechanical and thermal effects. It is shown that the ...
-
(1999)Data on pyroclastic deposits, visual observations, and seismicity were used to reconstruct the sequence of eruptive events at Bezymyannyi in 1993. The eruption consisted of three episodes of block-and-ash pyroclastic flows ...
-
(2000)Quantitative chemical analyses of fluid inclusions in sedimentary and diagenetic minerals can greatly improve our understanding of the chemistry of ancient surface and near surface waters. The environmental scanning electron ...
-
(2001)Eight terrestrial shell samples from recent excavations at Treugolnaya (Triangular) Cave (Northern Caucasus) were analysed by electron spin resonance (ESR) to produce a chronology for the most ancient Acheulian-bearing ...
-
(2001)In electron spin resonance (ESR) dating tooth enamel, after selecting the appropriate U uptake model, the most significant uncertainty lies in the external dose rate, Dext(t), which can vary with time. Unlike standard ESR ...
-
(2001)ESR-spectra of foraminifera in arctic sediment cores display the CO2--signal (g=2.0006). Research on the thermal behaviour of the CO2--signal shows that both natural and artificial irradiation generates a precursor and a ...
-
(2001)The palynological signature of interglacial deposits in the fragmentary European terrestrial record has often been used as the basis for determining their chronostratigraphical position and ultimately their age. This has ...
-
(2002)The adsorption of hydrogen sulfide (ΓH2S) and protons (ΓH+) on the surface of crystalline sulfur was investigated experimentally in H2S-bearing solutions at temperatures of 25, 50, and 70°C, NaCl concentrations of 0.1 and ...
-
(1997)Silicic igneous rocks (granites, pegmatites, and rhyolites) usually ascribed to A- or S-type sources commonly manifest enrichment in some combination of the rare alkalis and alkaline earths (Li, Rb, Cs, Be, Sr, Ba) and the ...
-
(2000)A new expression is developed for estimating the adsorption enthalpy of aqueous, monovalent ions on charged surfaces of solid oxides up to about 70°C. For sorption of the M-th cation and L-th anion represented as: >SO- + ...
-
(2001)Elastic theory applied to the deformation in accretionary wedges is used to calculate the condition for slip along an active frontal fault and the basal decollement. The equations for calculating the stresses can be solved ...
-
(1995)The isotopic composition of water-soluble Cl, extracted from mineral grains in granitic rocks, appears to reflect the relative age of debris-flow fan surfaces and the erosion rate of bedrock outcrops. Our data indicate ...
-
(2002)Radiometric ages of objects are often used to reconstruct historical variations in the rate function of geological events. Measurement error in such ages can lead to a bias in the estimated rate function. This paper describes ...
-
(2003)Cataclastic textures were produced by deforming porous quartz sandstone samples at room temperature, 15-200 MPa confining pressure, and 13-57% strain (γ~2-20). Particle size distribution (PSD) and fractal dimension (D) ...
-
(2003)Hydrological and soil erosion models require calculations of flow velocity, for which either the Darcy-Weisbach or the Manning equation is generally used. A series of field experiments was carried out in a small catchment ...
-
(2001)North of the Arabian plate, active tectonics is characterised by both N–S compression and E–W extension associated with strike-slip faults. The Pambak–Sevan–Sunik fault (PSSF) zone in Armenia is one of the major active ...
-
(2003)Time domain reflectometry (TDR) is a widely used method for measuring the dielectric constant (Ka) and bulk electrical conductivity (σa) in soils. The TDR measured σa and Ka can be used to calculate the soil solution ...
-
(2004)A data assimilation approach is demonstrated whereby seismic inversion is both automated and enhanced using a comprehensive numerical sedimentary basin simulator to study the physics and chemistry of sedimentary basin ...
Now showing items 3740-3759 of 21934