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Browsing Геология России by Title
Now showing items 5309-5328 of 39124
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(2003)The Earth may have been globally ice-covered several times during the Proterozoic. While the Neoproterozoic and the Paleoproterozoic glaciations may have been 'snowball' Earth events, there is no evidence for such glaciation ...
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(1989)In certain sedimentary basin seismic exploration has revealed geological bodies consisting of layers that taper in one direction, sometimes to the point of pinching out. These layered structures occur widely along the ...
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(2003)Fassaite is a major component of Ca-Al-rich inclusions (CAIs) of Types B and C that crystallized from liquids. In contrast, this mineral is rarely reported in Type A inclusions and has been much less studied. In this paper, ...
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(2001)This work aims at investigating the processes leading to the liberation of CO2 and SO2/SO3 in the atmosphere after large meteorite impacts into sediments. Firstly, we review reactions and thermodynamic conditions to produce ...
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(1998)Relaxation processes and present-day block structure were evaluated for a local area in the Lovozero Massif, proceeding from the fact that with a well-structured spatial distribution of relaxation sources one can treat ...
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(2003)In this paper wavelet transforms and a logarithmic barrier method are applied to the inversion of large-scale magnetic data to recover a 3-D distribution of magnetic susceptibility. The fast wavelet transform is used, along ...
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(2004)We address the problem of building an efficient algorithm for ray-based migration/inversion in complex media characterized by multivalued traveltime. Since the multivalued ray maps can be computed by wavefront construction, ...
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(2002)Ferro-manganese nodules of the western Baltic Sea reveal enhanced heavy metal concentrations since the end of the 19th century and are therefore potentially useful for retrospective monitoring of the heavy metal pollution ...
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(2001)Soil phosphorus (P) dynamics are controlled by the interaction of geochemical, biochemical and biological processes. Changes in species composition or management could alter the relative importance of these processes. We ...
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(2003)A model of a ductile fault zone is incorporated into a forward 3-D earthquake model to better constrain fault-zone hydraulics. The conceptual framework of the model fault zone was chosen such that two distinct parts are ...
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(2004)Damage zones showvery similar geometries across awide range of scales and fault types, including strike-slip, normal and thrust faults.We use a geometric classification of damage zones into tip-, wall-,and linking-damage ...
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(2000)We study the initiation of slip instabilities of a finite fault in a homogeneous linear elastic space. We consider the antiplane unstable shearing under a slip-dependent friction law with a constant weakening rate. We ...
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(2001)Using time sequence analyses of extensional fault models we demonstrate the pivotal role played by fault segmentation in the accumulation of displacement and length during the growth of faults. Experiments are described ...
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(2000)Faults usually are not isolated features but exist within a population of faults which may interact through their stress fields. This poses two serious problems for seismic hazard analysis. The most severe such problem ...
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(2004)A typical pattern shared by second-order faults in extended lithosphere was revealed based on field geological and structural data from the Obruchev Fault in the Baikal Rift and published evidence of rift-related faulting ...
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(2004)The new faulting-block structure map for the Tunka rift basin is constructed with the complex account of the data of faulting zone and cracking structural observations, lineament analysis of topographic maps, state geologic ...
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(1989)Specialists in structures of ore districts and in a broad field of tectonics attributed the formation of a regular fracture network to oriented pressure during folding. It is noteworthy that regardless of their position ...
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(1990)Fault-related metamorphism is one of the types of dynamic metamorphism whose allochemical crystalloblastic processes develop in deep fault zones under considerable dynamic load and involve gas-liquid fluids. The proposed ...
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(2003)The Volkhov Regional Stage (Middle Ordovician) in the East Baltic preserves diverse fossil assemblages dominated by epibenthic suspension feeders. Brachiopods, ostracodes, conodonts, echinoderms and bryozoans are the main ...
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(2002)Individual grains of calcian fayalite and ferroan kirschsteinite, as well as fayalite-kirschsteinite intergrowths are observed in the groundinass of basic crystallised melts, or parabasalts, from burned spoil-heaps of the ...
Now showing items 5309-5328 of 39124