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 13138-13157 of 21934
-
(2003)We present the results of a thermo-mechanical modelling study carried out to investigate the effect of pre-rift rheology on subsequent basin (de)formation in the Black Sea area. Important differences are inferred for the ...
-
(1987)It is shown that the depth factor affected the mode and the conditions of mineragenesis, so that thermobarogeochemical tests would be just as useful as geologic and mineralogic evidence as reliable indicators of the ...
-
(1989)We studied quartzite in order to find new ways of reconstructing its primary nature. For this purpose, we chose the quartzites that are widespread in the central part of the Mongolia-Okhotsk mobile belt in virtually all ...
-
(2003)Compositionally heterogeneous material may exist in the lowermost mantle [van der Hilst and Karason, Science 283 (1999) 1885-1888]. Here we use a numerical model to investigate the dynamics of (i) the subducted oceanic ...
-
(1986)Thermochemical data on several phases forming in the system CaO-MgO-Al2O3-SiO2 have been tested for consistency in reproducing experimental phase equilibrium relationships. Calorimetric data on enthalpy, entropy and heat ...
-
(1997)New experimental data on the heat capacities, enthalpies of dehydration and formation of some fibrous zeolites have been obtained. Natural samples of zeolites of the natrolite group including natrolite Na2Al2Si3O10 · 2H2O, ...
-
(2001)Calorimetric measurements were made on natural samples of heulandite having the composition Ca0.86Na0.37K0.06Al2.14Si6.86O18·6.1H2O and stilbite Ca1.01Na0.12Al2.12Si6.88O18·7.27H2O both from the same locality (Nidym River, ...
-
(1996)Thermodynamic properties of the natural calcium zeolites laumontite, leonhardite, dehydrated leonhardite (metaleonhardite), wairakite, and yugawaralite were studied by calorimetry in lead borate solvent at 975 K. Enthalpies ...
-
(1997)The enthalpy of drop solution of a quickly quenched, clear, titanite glass sample and several synthetic, polycrystalline, samples was measured in a Calvet-type calorimeter in 2PbO.B 2 O 3 solvent at 702 degrees C. The ...
-
(1995)We report experimental brackets (150-350°C, evacuated silica tubes) on (1) Ag-Cu partitioning between hexagonally close packed (hcp)-, face centered cubic (fcc)-, and body centered cubic (bcc)-(Ag, Cu)2S sulfides and the ...
-
(1997)Enthalpies of formation, ΔHf, of the double carbonates K2Ca(CO3)2 (with two polymorphs, bütschliite and fairchildite) and K2Ca2(CO3)3 from the components K2CO3 and CaCO3 were determined at 298 K by drop solution calorimetry ...
-
(2003)Melanophlogite is a naturally occurring clathrasil possessing a framework of linked silicate tetrahedra surrounding small, isolated cages, which can host small molecules. The energetics of a guest-free natural sample was ...
-
(2004)The thermochemistry of jarosite-alunite and natrojarosite-natroalunite solid solutions was investigated. Members of these series were either coprecipitated or synthesized hydrothermally and were characterized by XRD, FTIR, ...
-
(1996)Leonhardite, a partially dehydrated laumontite, and its alkali variety, primary leonhardite, have been studied by high-temperature calorimetry. The enthalpies of formation from oxides and elements at 298 K are -306.7 ± 7.1 ...
-
(2001)Theoretical approaches to the thermochemistry of silicate anions have so far focused on gas-phase molecular orbital and density functional theory (DFT) calculations. These calculations predict that in the presence of ...
-
(2000)We present a new formulation to describe the thermodynamics of liquids in the system O-S-Fe. The model is based on an associated regular solution formulation. According to this model, liquids in the O-S-Fe ternary are made ...
-
(2005)Yavapaiite, KFe(SO4)2, is a rare mineral in nature, but its structure is considered as a reference for many synthetic compounds in the alum supergroup. Several authors mention the formation of yavapaiite by heating potassium ...
-
(1998)Two Proterozoic terranes with different metamorphic histories are distinguished from geological mapping in southwestern Wedel Jarlsberg Land: a northern greenschist facies terrane and a southern amphibolite facies terrane ...
Now showing items 13138-13157 of 21934