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Геология России: Recent submissions
Now showing items 1761-1780 of 43490
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(2006)Microstructural attributes of cracks and fractures, such as crack density, aspect ratio, and fluid infill, determine the elastic properties of a medium containing a set of parallel, vertical fractures. Although the tangential ...
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(2006)As geophysicists rely increasingly on effective media theories to characterize naturally fractured reservoirs, they become more and more interested in evaluating the accuracy of different theories, estimating their limits ...
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(2006)This paper investigates Q-anisotropy for characterizing fractured reservoirs - specifically, the variation of the seismic quality factor Q versus offset and azimuth (QVOA). We derive an analytical expression for P-wave ...
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(2006)The Qinling orogenic belt is one of world's great collisional orogenic belts, which extends from the Pamirs-West Kunlun to the Korean peninsula and occupies a key position in understanding of the evolution and assembly of ...
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(2006)This paper describes nine brachiopod species in eight genera from the Tumenling Formation in the Wuchang area, southern Heilongjiang, northeast China. The Tumenling fauna is constrained to a Wordian-Capitanian (Guadalupian, ...
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(2006)Isogramma manchoukuoensis from the Upper Carboniferous of northeast China is redefined based on re-examination of the type specimens. Isogramma specimens from the Middle Permian of northeastern Japan are reassigned to I. ...
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(2006)Typical records of volcanic tremor and explosion quakes at Arenal volcano are analyzed with a high-resolution time-frequency method. The main characteristics of these seismic signals are: (1) numerous regularly spaced ...
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(2006)Systematic research of piezoelectric and seismoelectrokinetic phenomena in the context of exploration geophysics began in the former Soviet Union in the mid-1950s. These phenomena are manifested by electrical and electromagnetic ...
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(2006)We present 2.5-D forward and inverse algorithms for modelling low-frequency electromagnetic scattering problems. These algorithms are intended to be used for interpretation of large-scale electromagnetic geophysical data. ...
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(2006)The structurally controlled Au-Pd mineralization at Bleïda Far West occurs in a volcano-sedimentary rock sequence in altered amphibolites and chlorite schists of the Neoproterozoic Bou Azzer-El Graara inlier. The Au-Pd ...
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(2006)The Sauwald Zone, located at the southern rim of the Bohemian Massif in Upper Austria, belongs to the Moldanubian Unit. It exposes uniform biotite + plagioclase ± cordierite paragneisses that formed during the post-collisional ...
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(2006)The Annieopsquotch accretionary tract in Newfoundland is composed of a series of west-dipping structural panels, each containing remnants of ophiolitic and arc-backarc complexes of Laurentian affinity formed during the ...
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(2006)Granulites from Huangtuling in the North Dabie metamorphic core complex in eastern China preserve rare mineralogical and mineral chemical evidence for multistage metamorphism related to Palaeoproterozoic metamorphic ...
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(2006)Four mud extrusions were investigated along the erosive subduction zone off Costa Rica. Active fluid seepage from these structures is indicated by chemosynthetic communities, authigenic carbonates and methane plumes in the ...
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(2006)High-pressure mafic granulites (including retrograded eclogites) have been reported from the Trans-North China Orogen, a Paleoproterozoic orogenic belt along which two discrete continental blocks, referred to as the Eastern ...
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(2006)Recent suggestions that the Greater Himalayan Sequence (GHS) represents a mid-crustal channel of low viscosity, partially molten Indian plate crust extruding southward between two major ductile shear zones, the Main Central ...
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(2006)Teleseismic receiver functions have been calculated from data of a temporary seismological network of broad-band three-component stations to investigate the lithospheric and asthenospheric structure across the Late Caledonian ...
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(2006)The active summit lava lake of Erta 'Ale volcano, Ethiopia, offers a unique opportunity to study magma convection. In February 2002, we collected a multiparametric set of seismic, thermal and video data. These data indicate ...
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(2006)The character of the crust-mantle transition beneath Iceland, a ridge-centred hotspot, is not well known despite a wealth of geophysical data including recent seismic refraction profiles. scattered observations of a ...
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(2006)Cenozoic, post-collisional, potassic and ultrapotassic igneous rocks in the North Qiangtang, Songpan - Ganzi and North Kunlun terranes of the northern Tibetan Plateau are distributed along a semi-continuous, east - ...
Now showing items 1761-1780 of 43490