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Browsing ELibrary by Title
Now showing items 3013-3032 of 21821
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(2001)A physiochemical model for the complex dielectric response of sedimentary rocks is used to invert broadband dielectric spectra for effective grain size distributions. The complex dielectric response of each grain within ...
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(2000)The dielectric behavior of kaolinite, montmorillonite, allophane, and imogolite samples ad-justed to a water potential of 33 kPa was examined using a time-domain reflectometry method over a wide frequency range of 103-10 ...
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(2004)DIFFaX simulations show that the 3R1 and 3R2 polytypes of hydrotalcites (HT) have distinctly different X-ray powder diffraction (XRPD) patterns. The HT samples obtained by coprecipitation as well as those subjected to a ...
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(2005)Carbonate-intercalated layered double hydroxides of Co(II) and Ni(II) with Fe(III) and Al(III) were precipitated under different conditions (pH = 8-12; T= 25-80°C). All the samples are replete with stacking faults which ...
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(2003)The quartz-water reaction SiO2 + 2H2O = H 4SiO40 is usually described by the following rate law: dm/dt = kd(S/M)(1 - m/meq , where m and meq are the real and equilibrium concentrations of silica in the solution, t is the ...
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(2003)Elastic moduli are controlled mainly by the viscoelastic and microplastic behavior of rocks if stress and strain remain below the proportionality limit. Differences between measured static and dynamic elastic moduli are ...
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(2001)By comparing the compositions of glacial and interglacial intervals of the Late Pliocene, Pleistocene, and Holocene from different parts of Lake Baikal, we demonstrate the use of the Baikal clay mineral associations as ...
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(2003)Normal grain growth of calcite was investigated by combining grain size analysis of calcite across the contact aureole of the Adamello pluton, and grain growth modeling based on a thermal model of the surroundings of the ...
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(2005)Fulvic acids from deep clay formations have been isolated by the International Humic Substances Society (IHSS) standard protocol and analyzed. Near edge X-ray absorption fine structure (NEXAFS) spectroscopy reveals, that ...
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(2002)Different approaches (American and European) to perfection of the General stratigraphic scale (GSS) are discussed. Practice of the International Stratigraphic Commission that consists, according to recommendations of ...
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(2002)The dynamics of dissolved organic matter (DOM) are closely related to organic matter processes such as decomposition, humification, and stabilization of organic matter in soils. Nevertheless, it is unknown whether dissolved ...
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(2000)The compositional dependence of water incorporation mechanisms in melts and glasses belonging to the quartz (Qz)-albite (Ab) join was studied with nuclear magnetic resonance (NMR) spectroscopy. Dry and hydrous glasses ...
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(2000)The investigation of prehistoric human migration from the measurement of Sr-isotope ratios within preserved tissue is critically dependent on the preservation of biogenic Sr. A number of recent studies have involved isotope ...
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(1997)Synchrotron-based X-ray absorption fine structure (XAFS) spectroscopy was used to investigate the reduction of aqueous Cr(VI) to Cr(III) in magnetite-bearing soils from Cr-contaminated sites. Soils from two field sites ...
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(2003)Western, central, and eastern segments of the Trans Alai mountain front in the northern Pamir of Kyrgyzstan have accommodated varying degrees of approachment of the Pamir orogen with respect to the Tien Shan (Shan = ...
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(1997)We present a study of the noble gas isotopic abundances in two achondrites, Divnoe and the Asuka 881371 angrite. For Divnoe, we also performed chemical analyses of the major elements and of some minor and trace elements ...
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(2004)Many studies of foreland basins have recognized a hierarchical organization in the stacking of sequences deposited by axial-deltaic and alluvial fan systems. The hierarchy is often explained in terms of the competing control ...
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(1998)Data on Jurassic foraminifers from key localities in continents and oceans is analyzed. Their distribution range spans the stratigraphic interval from the Aalenian to the Tithonian equal to 32 million years. Among 23 ...
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(1986)Although layered komatiite flows with spinifex-textured upper parts and olivine-enriched lower parts are commonly thought to provide firm evidence of magmatic differentiation by olivine settling, there are reasons to suspect ...
Now showing items 3013-3032 of 21821