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 5025-5044 of 21768
-
(1990)Experiments were carried out on primitive natural lherzolitic compositions from 10 to 60 kb and 900 to 1400-degrees-C. Mineral compositions were reversed by using mixes of finely ground (< 20-mu-m) minerals from natural ...
-
(1990)On the basis of experiments presented in Part I of this series, most of the published thermobarometers relevant to four-phase peridotites are tested here for their ability to reproduce experimental conditions. They were ...
-
(2004)Geothermometry of eclogites and other high pressure (HP)/ultrahigh-pressure (UHP) rocks has been a challenge, due to severe problems related to the reliability of the garnet–clinopyroxene Fe–Mg exchange thermometer to ...
-
(2001)A simple extension of geothermobarometric technique is developed, from the usual case of assumed equilibrium among all minerals, to layered coronas with gradients of chemical potential. For reactions among end-members in ...
-
(1982)The reaction Hb+Zo(Ep)+H2O+CO2⇌Pl+ Chl+Cc+Q was studied under hydrothermal conditions at P total=2, 4, 6 and 8 kb at Xco2=0.1. The continious transition from tremolite (actinolite) to Al-rich hornblende was fixed along the ...
-
(1997)By using ICP-MS, we have measured the concentrations and isotopic abundances of Ge in the following samples: (1) the iron meteorites Camp Verde, Toluca, Picacho, and Canyon Diablo; (2) Canyon Diablo spheroids; and (3) oxide ...
-
(2001)Earth, Venus, and Mars all exhibit populations of giant (radiating, linear, and arcuate) mafic dike swarms hundreds to >2000 km in length. On Earth the dikes are exposed by erosion, while on Venus and Mars their presence ...
-
(2005)We present a model to assess the viability of the creation of volcanic eruptions of up to flood-basalt size from a giant impactor striking a relatively thin lithosphere. A 300-km-radius crater in 75-km-thick lithosphere ...
-
(1995)On Earth, giant radiating dyke swarms are usually preserved as fan-shaped fragments which have been dismembered from their original configuration by subsequent plate tectonic rifting events. Analysis of the largest fragments ...
-
(2003)Resources of giant silver ore deposits found in northeastern Russia are comparable to those of the world's largest deposits such as Potosi (Bolivia) and Guanohuato (Mexico). One of them, e.g., the Dukat deposit, is confined ...
-
(1998)New thermodynamic data are presented for the mixing of calcite (CaCO3(s)) and rhodochrosite (MnCO3(s)) to form CaxMn1-xCO3(s) solutions. A reversible equilibrium was achieved between the aqueous solution and the metastable ...
-
(1997)The Gibbs free energies of formation of RuO2, OsO2 and IrO2 have been determined by measuring the chemical potentials of oxygen (μO2) defined by the reactions M + O2 = MO2, where M = Ru, Os. or Ir, using an electrochemical ...
-
(1996)The solubility of a natural hydrothermal kaolinite was measured in buffered alkaline solutions at temperatures ranging from 60 to 170°C. At temperatures below 110°C equilibrium was obtained from undersaturation, while above ...
-
(1999)New experimental data for gibbsite growth on powdered kaolinite and single crystal muscovite and published data for gibbsite growth on gibbsite powders at 80°C in pH3 solutions show that all growth rates obey the same ...
-
(2001)A Givetian rhynchonellid assemblage from the Chernaya Cuba Horizon in southwestern Novaya Zemlya is described. The new species: Eurycolporhynchus krasinensis, Septalaria tisengausensis, and Septalaria alferovi are described ...
-
(2001)The article presents a new Lake Baikal paleoclimate record of biogenic silica for the Brunhes Chron (from 780 ka ago to the present). Correlation of the Lake Baikal record with the marine oxygen isotope record shows that ...
-
(1996)Diamictites, many of glacial origin, are globally distributed in the Neoproterozoic. Recently, two relatively thin diamictites in the Maikhan Uul Member at the base of the Neoproterozoic Tsagaan Oloom Formation from the ...
-
(2002)Environmental conditions and productivity changes in the southeastern Okhotsk Sea have been reconstructed for the last 20 ka using planktonic and benthic foraminiferal oxygen isotope records and calcium carbonate, organic ...
-
(2002)Glacial isostatic adjustment data are commonly used to invert for the radial viscosity structure of the mantle. However, the effects of lateral variations in mantle viscosity in such inversions are not yet accounted for. ...
-
(1988)Recent surveys of bottom sediments in the Barents Sea revealed deposits of an unusual kind, whose genesis was attributed to processes of submarine slumping and suspension flow. The clayey sediments classified as suspension-flow ...
Now showing items 5025-5044 of 21768