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Browsing ELibrary by Title
Now showing items 10220-10239 of 21934
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(2004)Structural relationships in the Kivakka intrusion were established, and rhythmic phase layering (Kivakka type layering) was quantitatively characterized. Rhythmic layering occurs in the Kivakka intrusion as contrasting ...
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(2001)Oscillatory zoning in carbonates of gold ore deposits Darasoon, Shkolnoye and silver-polymetallic deposit Prognoz is studied. Alternation of dolomite and Mn-ankerite rhythms is observed at Darasoon deposit. Single rhythm ...
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(2003)Today, the term ria is rarely used by sedimentologists or stratigraphers, although it embodies all the characteristics of the so-called incised valleys - a topic of considerable interest since the increased understanding ...
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(2003)The Early Proterozoic banded iron formation (BIF) of the Mikhailovskoe iron deposit differs from other known Precambrian BIF by the low Al# and high Fe3+/(Fe3+ + Fe2+) ratios. The elevated oxygen fugacity during the ...
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(2003)The topography of ocean ridges and rifts show a distinct asymmetry. The eastern sides of the East Pacific Rise, the Mid-Atlantic Ridge, and the NW Indian Ridge are, on average, 100-300 m more elevated than the conjugate ...
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(2004)We report a comparative study on the high pressure (HP) structural behaviour of a fibrous zeolite (with EDI topology) on the basis of rigid unit modes (RUM) modelling and previously published single-crystal X-ray diffraction. ...
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(2004)Partial ring currents during the main phase of a geomagnetic storm cause a longitudinal asymmetry in the magnetic field at the earth’s surface at low and mid latitudes. The horizontal component of the magnetic field obtained ...
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RIPHEAN SEDIMENTARY SEQUENCES OF THE EASTERN AND NORTHEASTERN MARGINS OF THE EASTERN EUROPEAN CRATON (2002)The Riphean history of depositional basins in the study region can be divided into Early-Middle Riphean and Late Riphean phases. Throughout the Riphean, clastic material was supplied chiefly from eastern regions of the ...
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(2004)Extensive methane hydrate layers are formed in the near-surface sediments of the Cascadia margin. An undissociated section of such a layer was recovered at the base of a gravity core (i.e. at a sediment depth of 120 cm) ...
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RIVER FLOW FORECASTING: USE OF PHASE-SPACE RECONSTRUCTION AND ARTIFICIAL NEURAL NETWORKS APPROACHES (2002)The use of two non-linear black-box approaches, phase-space reconstruction (PSR) and artificial neural networks (ANN), for forecasting river flow dynamics is studied and a comparison of their performances is made. This is ...
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(2001)An important problem in hydrologic science is understanding how river flow is influenced by rainfall properties and drainage basin characteristics. In this paper we consider one approach, the use of mass exponents, in ...
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(2004)Rivers are largely responsible for shaping the Earth's continental landscapes. River patterns, the spatial arrangements of channels in the landscape, are determined by slope and structure. At site and sector scale, channel ...
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(2004)Several satellite techniques have been proposed to monitor events related to seismic and volcanic activity. A selfadaptive approach (RAT, Robust AVHRR Techniques) has recently been proposed which seems able to recognise ...
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(2001)The instrumental measurement results of the residual shifts and deformations of rocks massif under the action of underground nuclear explosions are presented. The main attention is paid to the problems of deformations ...
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(2005)The dilation of rock under shear gives rise to detectable effects both in laboratory experiments and in field observations. Such effects include hardening due to reduction in pore pressure and asymmetrical distribution of ...
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(2003)An idea to consider rock textures from a geostatistical viewpoint is suggested. Mineral grains are coded by indicator functions. Four metrics are shown of interest for petrographic applications. The simplest one is used ...
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(2003)Detailed rock magnetic investigations, grain size determination and X-ray diffraction were carried out on loess and buried soils of the last glacial-interglacial cycle from Kurtak, southern Siberia. The susceptibility and ...
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(1988)Tectonic faults consist of water-saturated rocks crushed and crumbled into gravel and sand fractions, thus facilitating a hydraulic connection between the water-bearing zone and all other rocks till the ground surface. ...
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(2006)Rock avalanches are known to behave in extraordinary ways unlike other landslides, and their deposits in part reflect their unusual physical behavior. Recent experiments in granular physics suggest that many phenomena and ...
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(1992)A detailed investigation was made of the typomorphic and chemical characteristics of the rock-forming minerals in norite-diorite intrusions in the Voronezh crystalline massif. The rocks of the intrusions are characterised ...
Now showing items 10220-10239 of 21934