Recently added
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- Recent submissions
JavaScript is disabled for your browser. Some features of this site may not work without it.
ELibrary: Recent submissions
Now showing items 1221-1240 of 23119
-
(2006)Based on results of studying the geochemistry and gold distribution of groundwaters in the Egor'evskoe gold-bearing area, a mechanism of gold mobilization, migration, and accumulation in mountain-forest landscape is proposed. ...
-
(2006)The speciation of carbon in subseafloor hydrothermal systems has direct implications for the maintenance of life in present-day vent ecosystems and possibly the origin of life on early Earth. Carbon monoxide is of particular ...
-
(2006)GRA 95209 may provide our best opportunity to date to understand the earliest stages of core formation in asteroidal bodies. This lodranite preserves a physically, chemically, and mineralogically complex set of metal-sulfide ...
-
(2006)Comparison of measured far-from-equilibrium dissolution rates of natural glasses and silicate minerals at 25 °C and pH 4 reveals the systematic effects of crystallinity and elemental composition on these rates. Rates for ...
-
(2006)The influence of Al(OH)4- on the dissolution rate of quartz at pH 10-13 and 59-89 °C was determined using batch experiments. Al(OH)4- at concentrations below gibbsite solubility depressed the dissolution rate by as much ...
-
(2006)The microtexture and mineralogy of a 580-?m-wide melt vein in the Tenham L6 chondrite were investigated using field-emission scanning electron microscopy and transmission electron microscopy to better understand the shock ...
-
(2006)Experiments specifically designed to measure the ratio of the diffusivities of ions dissolved in water were used to determine DLi/DK, D7Li/D6Li, D25Mg/D24Mg, D26Mg/D25Mg, and D37Cl/D35Cl. The measured ratio of the diffusion ...
-
(2006)Jarosite [KFe3(SO4)2(OH)6] is a mineral that is common in acidic, sulphate-rich environments, such as acid sulphate soils derived from pyrite-bearing sediments, weathering zones of sulphide ore deposits and acid mine or ...
-
(2006)Zircon populations of Neoproterozoic and early Paleozoic age occur in metabasites of a high-pressure amphibolite-facies unit of the Austroalpine basement south of the Tauern Window. The host rocks for these zircons are ...
-
(2006)In this study we test if calcite shells of the common mussel, Mytilus edulis, contain barium in proportion to the water in which they grew. Similar to all bivalves analyzed to date, the [Ba/Ca]shell profiles are characterized ...
-
(2006)A significant uncertainty exists as to whether ?13C values in charcoal meaningfully represent the stable isotopic content of the original material, with studies suggesting variable responses to both natural and laboratory ...
-
IRON ISOTOPE FRACTIONATION DURING MICROBIALLY STIMULATED FE(II) OXIDATION AND FE(III) PRECIPITATION (2006)Interpretation of the origins of iron-bearing minerals preserved in modern and ancient rocks based on measured iron isotope ratios depends on our ability to distinguish between biological and non-biological iron isotope ...
-
(2006)We have determined the diffusion coefficient of Cr in olivine as function of temperature, oxygen fugacity (fO2), and crystallographic orientation and used these data to develop a quantitative understanding of the resetting ...
-
(2006)The effect of water on heat capacity has been determined for four series of hydrated synthetic aluminosilicate glasses and supercooled liquids close to albite, phonolite, trachyte, and leucogranite compositions. Heat ...
-
(2006)Most of the petrologic data available for Type B inclusions comes from Type B1s. Relatively little comes from the B2s, and there has not been a systematic comparison of the properties of their two most abundant minerals. ...
-
(2006)A synthesis of previous results, which we dub the "standard model," provides a prediction as to how isotope fractionation during sulfate reduction should respond to physiological variables such as specific rate of sulfate ...
-
(2006)Anions of polycarboxylic low-molecular-weight organic acids (LMWOA) compete with phosphate for sorption sites of hydrous Fe and Al oxides. To test whether the sorption of LMWOA anions decreases the accessibility of micropores ...
-
(2006)We present evidence of inhibition of calcite dissolution by dissolved magnesium through direct observations of the (104) surface using atomic force microscopy (AFM) and vertical scanning interferometry (VSI). Far from ...
-
(2006)Ionising radiation is an energy source capable of generating and altering complex organic matter. A full understanding of the radiolytic formation and evolution of organic matter is essential to appreciate the budget of ...
-
(2006)Rare earth elements (REE) concentrations of Archean and Proterozoic chemical sediments are commonly used as proxies to study secular trends in the geochemistry of Precambrian seawater. In addition, similarities in the REE ...
Now showing items 1221-1240 of 23119