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Browsing Геология России by Title
Now showing items 2415-2434 of 39195
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(2002)The Central Aldan ore district stands out in many features against the other gold districts within the Aldan Shield. The gold, uranium, and other mineral deposits are located at a junction of regional structures, they ...
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(2001)The structure and tectonic position of the Neoproterozoic Central Taimyr accretionary belt of northwestern Siberia is dominated by the Faddey and Mamont-Shrenk granite-gneiss terranes, ophiolites, and back-arc volcanic ...
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(2001)Process of separation of accessory minerals has been considered. It has been shown, that traditional methods of separation of the minerals are non-efficient. In order to improve efficiency of zircon extraction from granite, ...
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(2002)Centrifuge modelling is used to simulate the progressive development of structures in a simplified crustal profile during rifting. This paper focuses on folding of ductile layers representing the middle to lower crust. ...
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CENTRIFUGE MODELLING OF THE EVOLUTION OF LOW-ANGLE DETACHMENT FAULTS FROM HIGH-ANGLE NORMAL FAULTS (2001)Centrifuge models composed of a ductile layer overlain by a semi-brittle layer are used to study how deformation localised by a high-angle normal fault promotes detachment faulting. During lateral extension driven by ...
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(2001)A series of centrifuge analogue experiments have been performed to model the mechanics of continental oblique extension (in the range of 0° to 60°) in the presence of underplated magma at the base of the continental crust. ...
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(2002)The crucial role of atmospheric CO2 in glacial-interglacial transitions is demonstrated by recent ice-core studies that highlight the importance of accurate CO2 records for our understanding of Quaternary climate dynamics. ...
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(2002)Cerite-(La), ideally (La,Ce,Ca)(9)(Fe,Ca,Mg)(SiO4)(3)[SiO3(OH)](4)(OH)(3), was found in an aegirine-natrolite-microcline vein in foyaite, Mt. Yuksporr, Khibina massif, Kola Peninsula, Russia. It forms porous pseudomorphs ...
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(2004)Postcranial bones of Vivaxosaurus permirus Kalandadze et Kurkin are described. Certain features of the pectoral girdle and forelimbs suggest adaptation to feeding on subterranean plant organs. Structural features of the ...
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(1981)In the Baikal rift fracture initiation, propagation and bifurcation occurred under energy conditions considerably higher than in other continental rifts. The brittle fracture of this rift was strongly influenced by the ...
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(1989)Interest in heteromorph ammonites has strongly increased in recent times due to the realization that these fossils are of great biostratigraphic and paleobiological importance. The earliest formed parts of their shell are ...
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(1989)In topaz-bearing granite porphyry and microgranite porphyry dikes found in a rare-metal dike belt there was found a group unusually high in rate elements, chiefly rare alkalies. Apatite, topaz and, less commonly, talc ...
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(2001)Operation of powerful vibration-seismic sources has been considered. They are used for excitation of seismic waves in geological medium. Application of two-axis four-shaft generator of oscillations for vibration-seismic ...
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(1999)The stability of synthetic cation-exchanged zeolites having the chabazite framework (CHA) and their cation-water interaction were studied using high-temperature reaction calorimetry. Four cations (K, Na, Li, and Ca) were ...
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(2003)The crystal structure of Pb4O(VO4)(2) has been solved using crystals prepared by high-temperature solid-state reactions. The compound is orthorhombic, Pnma, a 22.7276(9), b 11.5346(4), c 7.4349(3) Angstrom, V 1949.09(13) ...
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(1999)The aim of this study was to estimate the contents of sulfur in the silicate Earth, using a quantitative model for the generation of NMORB basalts in the course of the polybaric dynamic melting of a pyrolite source. Also ...
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(2003)In this study, we examine the major components of polar motion, focusing on quantifying their temporal variability. In particular, by using the combined Earth orientation series SPACE99 computed by the Jet Propulsion ...
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(1989)We chose for investigaton the Koshabulak tectonic structure, within the Sultan-Sandzhar swell, which is one of the group of Pitnyak tectonic uplifts of the Bukhara Bench, which were formed during Hercynian time and continue ...
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(1989)It has long been known that the tectonic activity of the Earth varies significantly with time. The best method of estimating tectonic activity is to calculate the amount of ocean crust accreted along spreading axes on a ...
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(1987)Quantitative paleotemperature data, which express on a global scale the change in the thermal structure of the upper ocean are needed in order to elucidate ancient patterns of oceanic sedimentation and in the study of the ...
Now showing items 2415-2434 of 39195