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Browsing ELibrary by Title
Now showing items 11106-11125 of 21768
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(1995)Three main structural units are recognized in the Archean granito-gneissic basement of eastern Finland: (1) a lower unit (Kivijärvi orthogneisses), which is highly migma-tized and characterized by circular and elliptical ...
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(2003)The nature of surface complexes formed on Ni uptake onto montmorillonite (a dioctahedral smectite) has been investigated over an extended time period by polarized extended X-ray absorption fine structure (P-EXAFS) spectroscopy. ...
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(1998)The western Koryak fold and thrust belt consists of a set of tectonostratigraphic terrances that contain units ranging from Lower Palaeozoic to Cenozoic. Three deformational events have been identified in the study area. ...
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(2002)Lake Teletskoye in the northeastern part of the Altai mountain range has attracted the attention of geo-scientists for a long time, because it fills an impressive tectonic depression. The lake is 77 km long and 4 km wide, ...
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(2004)Shock-recovery experiments for obsidian and its fused glass have been carried out with pressure up to 35 GPa. Structural evolution accompanying the shock compression was investigated using X-ray diffraction technique, Raman ...
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(2003)Hybrid Langmuir-Blodgett (LB) films of a single clay layer and a donor-(π-electron system)-acceptor (Dδ-π-Aδ−) zwitterionic molecule (ind-TCNQ), prepared from 1,3,3-trimethyl-2-methyleneindoline (donor) and 7,7,8,8-tetra ...
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(2002)The large number of mica species (end-members) and varieties is based on chemical variability and peculiar structural features like polytypism, local and global symmetry. In addition, mainly because of an inherent misfit ...
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(1999)The Bashkirian anticlinorium of the southwestern Urals shows a much more complex structural architecture and tectonic evolution than previously known. Pre-Uralian Proterozoic extensional and compressional structures ...
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(2003)Two- and three-dimensional nets are widely used to describe and systematize crystal structures based solely on tetrahedral oxyanions. This approach may also be used to advantage for crystal structures based on polymerization ...
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(2001)To study the effects of total water content and alkali substitution on the structure of aluminosilicate glasses, two series of glasses belonging to the ternary system Quartz (Qz)-Albite (Ab)-Orthoclase (Or) were synthesized ...
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STRUCTURAL IMPURITY OF AL IN QUARTZ FROM PALEOZOIC GRANITOIDS IN THE BOLSHOY KAVKAZ (GREAT CAUCASUS) (1997)A study was made of structural impurities of Al in quartz. The aim of the study was to reveal and trace the interconnection between the concentration of structural impurities and the total micro-element composition of the ...
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STRUCTURAL INSIGHTS FROM THE STUDY OF CS-EXCHANGED SMECTITES SUBMITTED TO WETTING-AND-DRYING CYCLES (2002)Six smectites of different tetrahedral and octahedral compositions (SAz-1, Chambers, Belle Fourche, two subsamples of nontronite 33B and SWy-1) were Cs-exchanged and submitted to 70 wetting-and-drying cycles. X-ray diffraction ...
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(1996)When predicting faulting in a known stress field or reconstructing the stressed state along systems of faults, it would be convenient to base the calculations on their simple geometric and kinematic relationships, which ...
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(2004)The main objective of this paper is to apply an NMR-based methodology to clay minerals that provides resolution enhancement in 27Al NMR spectra, permitting the differentiation of aluminum ions with one same coordination ...
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(2001)A series of 21 cordierites with 0.06<Fe2+ cations pfu <1.54 from different petrogenetic environments were studied by polarized electronic absorption single-crystal spectroscopy and 57Fe Mssbauer spectroscopy (MS). The ...
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(2001)A series of 21 cordierites with 0.06<Fe2+ cations pfu <1.54 from different petrogenetic environments were studied by polarized electronic absorption single-crystal spectroscopy and 57Fe Mssbauer spectroscopy (MS). The ...
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(1997)The geochemistry of Co at the Earth's surface is closely associated with that of man- ganese oxides. This geochemical association results from the oxidation of highly soluble Co21 to weakly soluble Co31 species, coupled ...
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(2003)Phase transitions in the BaAl2O4-SrAl2O4 solid solution have been analysed as a function of temperature and composition using infrared (IR) powder absorption spectroscopy. The improper ferroelectric phase transition P6322 ...
Now showing items 11106-11125 of 21768