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 2428-2447 of 21821
-
(1996)During the Neoproterozoic and Palaeozoic the two continents of Baltica and Laurentia witnessed the break-up of one supercontinent, Rodinia, and the formation of another, but less long-lived, Pangea. Baltica and Laurentia ...
-
(2001)Orogeny is modelled numerically by treating continental collision within full convection solutions, in order to better understand some aspects of the Variscan structures and processes. Three different approaches are taken: ...
-
(2004)Studies of supercontinental cycle are mainly concentrated on the assembly, breakup and dispersal of supercontinents, and studies of continental crustal growth largely on the growth and loss (recycling) of the crust. These ...
-
(2004)Models of melting accompanying mantle upwelling predict far more melt than is observed at nonvolcanic margins. The discrepancy may be explained if the paradigm of a uniform asthenosphere is incorrect. Work on the velocity ...
-
(2002)The growth of juvenile continental crust during a possible superplume event at 1.9-Ga occurred chiefly in the form of new arc systems (esp. continental-margin arcs), which were accreted to cratons during supercontinent ...
-
(2003)During Proterozoic time, growth of the continents took place by the addition of mantlederived, juvenile material to pre-existing continental blocks. This accretion took place largely within three tectonic environments: (1) ...
-
(2004)We study possible scenarios for the evolution of continental collision zones by using a dynamic thermomechanical model that includes brittle-elastic-ductile rheology, surface erosion, and explicit metamorphic changes. This ...
-
(2004)Small-scale centrifuge models were used to investigate the role of continental rift structure in controlling patterns of magma migration and emplacement. Experiments considered the reactivation of weakness zones in the ...
-
(2001)Analysis of major rift systems suggests that the preexisting structure of the lithosphere is a key parameter in the rifting process. Rift propagation is not random, but tends to follow the trend of the orogenic fabric of ...
-
(2004)Thermo-mechanical physical modelling of continental subduction is performed to investigate the exhumation of deeply subducted continental crust. The model consists of two lithospheric plates made of new temperature sensitive ...
-
(1997)An understanding of the formation of new continental crust provides an important guide to locating the oldest terrestrial rocks and minerals. We evaluated the crustal thicknesses of the thinnest stable continental crust ...
-
(2003)To better understand the extended X-ray absorption fine structure (EXAFS) spectroscopic information obtained for complex materials such as those encountered in Earth materials, we propose to use the Continuous Cauchy Wavelet ...
-
(2005)Multianvil melting experiments in the system CaO–MgO–Al2O3–SiO2–CO2 (CMAS–CO2) at 3–8?GPa, 1340–1800°C, involving the garnet lherzolite phase assemblage in equilibrium with CO2-bearing melts, yield continuous gradations ...
-
(2004)A continuous record of the geomagnetic field direction during of cooling of the Monchegorsk (2.5Ga), Kivakka (2.45 Ga) and Bushveld (2.06 Ga) layered intrusions was conducted for the first time. The low-Ti titanomagnetites ...
-
(2002)Among the minerals of the selenide assemblage at the Niederschlema-Alberoda uranium deposit, Erzgebirge, Germany, members of the mercurian giraudite-hakite solid solution intergrown with berzelianite and galena have been ...
-
(1996)In spite of the major importance of monazite as a repository for the rare earths and Th in the continental crust, for U-Th-Pb geochronology, and as a possible form for high-level nuclear waste, very little work has been ...
-
(2003)Clinozoisite and topaz are examined to pressures of 36 and 24 GPa, respectively, at 300 K using infrared spectroscopy. Both minerals metastably persist throughout this pressure range at ambient temperature. Both stretching ...
-
(1997)Microthermometry and stable isotope data enable us to distinguish between two contrasting sets of fluids involved in the Hercynian and Alpine metamorphic events in the Western Carpathians. High-temperature smoky quartz ...
-
(2004)Distinct cyclicity in lithology and microfaunal distribution in sediment cores from the Mendeleev Ridge in the western Arctic Ocean (water depths ca. 1.5 km) reflects contrasting glacial/interglacial sedimentary patterns. ...
-
(2002)The Paleoproterozoic Svecofennian Orogen in the Fennoscandian shield can be regarded as one entity or as a collage of several accretionary units. To test for the possible occurrence of a suture zone dividing the Svecofennian ...
Now showing items 2428-2447 of 21821