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Browsing Геология России by Title
Now showing items 4108-4127 of 39124
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(PANGAEA, 2015-06-16)
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(PANGAEA, 2015-06-16)
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(PANGAEA, 2015-06-16)
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(PANGAEA, 2015-06-16)
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(PANGAEA, 2015-06-16)
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(2002)This paper deals with all solid sedimentary fossil fuels, i.e. coal, the main one for geological reserves and resources, peat, and oil shales. Definitions of coal (<50% ash) and coal seam (thickness and depth limits) are ...
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(2005)We obtained new archeointensity data from French faience potsherds dated from the 17th to 19th century. These results further document the occurrence of sharp changes in geomagnetic field secular variation in Western Europe ...
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(2002)In this study, we investigate the effects of bacteria on metal transport through mineral-filled columns, and how the effect varies with pH and mineralogy. We measured Bacillus subtilis and aqueous Cd transport through ...
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(1998)Consideration of alkali-feldspar dissolution ratesThe term alkali-feldspar is used in the present study to denote those feldspars that dissolve via aluminum deficient precursor complexes [Oelkers, E.H., Schott, J., Devidal, ...
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(2006)Laboratory determined mineral weathering rates need to be normalised to allow their extrapolation to natural systems. The principle normalisation terms used in the literature are mass, and geometric- and BET specific surface ...
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(2002)It has recently been reported that the electron capture decay constant for 7Be varies by as much as 1.5% in different oxidic compounds of Be and that application of 400 kbar pressure to a Be(OH)2 gel increases its 7Be decay ...
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(2002)The fact that basin inversion is possible long after the cessation of rifting indicates that at least some sedimentary basins are characterized by permanent relative weakness. This paper investigates whether the steady-state ...
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(2001)Hydrogen isotope investigations on hydrothermal quartz reveal two H-reservoirs: (i) trapped fluid inclusions, and (ii) structurally bound water in homogenously distributed small clusters or bubbles. Varying mixing ratios ...
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DOLOMITE SURFACE SPECIATION AND REACTIVITY IN AQUATIC SYSTEMS - RATES DEPEND ON SURFACE SPECIATION (1999)The surface charge of dolomite (CaMg(CO3)2) was measured as a function of pH (6.5-11.5), pCO2 (10-3.5, 0.01, and 0.96 atm) and ionic strength (0.01, 0.1, and 0.5 M NaCl) using potentiometric titrations in a limited residence ...
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(1994)In early calcite carbonatites of the Kovdor ore deposit four morphological types of dolomite are represented. In the first type, dolomite microcrystals occur as lamellae enclosed by optically continuous calcite. In the ...
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(2004)Repeated heating and cooling cycles appear frequently in thermomagnetic experiments used to infer the palaeomagnetic field intensity. According to the fundamental assumptions used to interpret these measurements, a remanence ...
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(2001)The Karatau Fault System of southern Kazakstan forms a crustal-scale zone of strike-slip dominated transpressional tectonics which has undergone multiple phases and styles of deformation during a protracted history of ...
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(2001)In ammonoids, a soft body organ (possibly a supracephalic mantle fold), extending from the conch aperture secreted aragonitic wrinkles, forming a layer on the surface of the preceding whorl. The dorsal shell wall consists ...
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(1999)The process of 2β- decay of 130Te with the formation of 130Xe was used for the tellurium-xenon isotopic dating of tellurium-bearing minerals accompanying gold mineralization. The correlation of 130Xe diffusion characteristics ...
Now showing items 4108-4127 of 39124