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Browsing ELibrary by Title
Now showing items 9962-9981 of 21768
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(1998)Most quantitative models of mantle mixing have been based on simulations of tracer advection by 2-D flows. The present work shows that the mixing properties of 3-D time-independent flows cannot be understood or extrapolated ...
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(2001)The evolution of foraminifers during the Jurassic is considered in two aspects. The evolutionary aspect proper was analyzed using the internal biological features of these organisms and history of this faunal group was ...
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(2001)The analysis of geotectonic settings and the planetary distribution of phosphate ores revealed that apatite deposits are confined to the continental rift zones with the uplifted Moho discontinuity, while phosphorite deposits ...
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(1998)Processes responsible for the alternation of flora evolution stages are analyzed on the basis of the Late Cretaceous floras from northeastern Russia, among them two paleofloral successions from the Penzhina Bay ...
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(2003)A principal feature of stratiform basic-ultrabasic intrusions is alternation of rocks characterized by different proportions of the salic (plagioclase) and mafic (mainly pyroxene) constituents. Owing to considerable density ...
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(2003)A sequence of aftershocks is modelled assuming fluid migration in a narrow, porous fault zone formed along a vertical strike-slip fault in a semi-infinite elastic medium. The principle of the effective stress coupled to ...
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(2001)Controversy still exists on whether rhythmic features such as beach cusps are the result of the presence of standing edge wave motions in the hydrodynamics or if they are the result of self-organising processes. The ...
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(2003)Spherical cap harmonic analysis has become a well-known technique for regional modelling of fields that can be expressed as the gradient of a scalar potential, such as for example the geomagnetic field and its secular ...
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(2003)Voluminous, unzoned, phenocryst-rich pyroclastic deposits, considered as erupted batholiths, provide a unique opportunity to investigate magmatic processes in silicic magmas. The Fish Canyon Tuff, a well-documented example ...
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(2001)This paper is concerned with the question of how to relate laboratory measurements of the rheology of rocks to the rheological assumptions that need to be made in geodynamic modelling. First, there is a brief resume of the ...
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(1999)In a thermodynamic description of a mineral solid solution, it is customary to select a minimal group of end-members that constitutes an independent set, and yet in practical calculations it commonly occurs that a different ...
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(2004)We present evidence that the Hurst exponent of the ultra low frequency component of the geomagnetic field varies similarly to the energy release of the local swarm of earthquakes observed in Japan in 2000. Similarity is ...
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(1998)Evidence from the Late Mesozoic Okhotsk-Chukchi Volcanogenic Belt confirmed the view of V.V. Averiev that 'the hot aqueous fluid should be regarded as the main agent in a special form of volcanism wherein explosive phenomena, ...
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(1996)On the basis of seismic data analysis and the Debye model of solid bodies it is proved for the first time that fundamental connections exist between the source volume, elastic waves distribution velocity, boundary vibrational ...
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(2001)The objectives of this common research project are to evaluate deformation field variations observed with different means in different geodynamical areas of high and low seismic hazards. By the combined analysis of differenet ...
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(2000)A new relation is proposed to connect energy class KF68 and magnitude MS for Kamchatka, incorporating the corner point at KF68 12.5 in the recurrence relation for Kamchatka based on energy class KF68. The relation consists ...
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(1997)The composition of mollusks from the hole near the town of Anan'ev (Ukraine) has been analyzed. The green sand and clay beds, which in Moldavia and Western Ukraine (Podolia) are referred to as the Podolian Formation, do ...
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(2004)Relations between reflection and transmission responses of horizontally layered media were formulated by Claerbout in 1968 and by many others. In this paper we derive similar relations for 3-D inhomogeneous media. As the ...
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(2003)The petrological properties, and O and Al-Mg isotopic compositions of two spinel-bearing chondrules from the Allende CV chondrite were investigated using scanning electron microscopy and secondary ion mass spectrometry. A ...
Now showing items 9962-9981 of 21768