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Browsing ELibrary by Title
Now showing items 4540-4559 of 21879
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(2004)The extent to which the leaves of woody dicots encode in their physiognomy the climatic conditions that exist during dormancy was tested by sampling 20 sites along an approximately west-east transect across European Russia, ...
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(2004)The analysis of samples from numerous Pliensbachian and Toarcian sections from the northern regions of Russia and northern Alaska, as well as published data, allow us to estimate the correlative significance of foraminifera ...
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(1999)Data on changes in the taxonomic composition of planktonic and benthic foraminifers across the Cretaceous-Paleogene boundary are presented. Extinction events in the highly specialized planktonic group were most remarkable. ...
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(2004)In the northeastern Peri Tethys, the Goryachii Klyuch facies of the upper Paleocene are much more widespread than it was believed before. The facies correspond to dark colored, predominantly carbonate-free sediments bearing ...
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(2003)Distribution of foraminifers in the Tarusa, Steshev, and Protva horizons of the Serpukhovian Stage stratotype has been studied in the Zabor'e Quarry. Boundaries of Pseudoendothyra globosa. Eostaffellina decurta, and ...
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(2001)Opportunities for improving the oil recovery of petroleum pools have been considered. Experimental and theoretical investigations of mechanisms of vibration stimulation of petroleum fields have been performed. Mathematical ...
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(2003)Using a surface forces apparatus (SFA), we have studied the interactions between mica surfaces in pure and mixed NaCl and CaCl2 solutions at relevant geological conditions of pressure and electrolyte composition. Our results ...
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(2001)Fore-reef carbonate production is important but is poorly known as a result of methodological limitations. This paper reports on the development of a regional census-based method to calculate the average carbonate production ...
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(2002)An autocovariance forecasting procedure for single location ionospheric characteristics is presented. Its accuracy is illustrated as a function of the amount of time extrapolation for selected European stations under quiet ...
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(2003)Forecasting is a central goal of volcanology. Intensive monitoring of recent eruptions has generated integrated time-series of data, which have resulted in several successful examples of warnings being issued on impending ...
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(1997)As the regions around active volcanoes succumb to large increases in population, particularly in the developing world where most of the high-risk volcanoes are located, the threat posed by eruptions becomes increasingly ...
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(2002)The 5,575-km2 Academy of Sciences Ice Cap is the largest in the Russian Arctic. A 100-MHz airborne radar, digital Landsat imagery, and satellite synthetic aperture radar (SAR) interferometry are used to investigate its ...
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(2004)Formal analysis of argon isotope distribution in minerals in terms of Fick's and Arrhenius laws demonstrated that the linear dependency 36Ar/40Ar-39Ar/40Ar is a true isochron with all the corresponding regressions and ...
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FORMATION AND DEVELOPMENT OF NORMAL-FAULT CALDERAS AND THE INITIATION OF LARGE EXPLOSIVE ERUPTIONS (1998)The ring fractures that form most collapse calderas are steeply inward-dipping shear fractures, i.e., normal faults. At the surface of the volcano within which the caldera fault forms, the tensile and shear stresses that ...
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(2002)The tectonic activity of the Earth allowed exchange of volatile elements (H, C, N, rare gases) between the surface of the Earth (atmosphere, crust, sediments, oceans) and the mantle. However, some of these elements still ...
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(1997)Group A5 chondrules have FeO-rich olivines (>4 wt% FeO) and albite-normative mesostases and thus are discrete from the major primary chondrule groups. Group A5 chondrules in six LL chondrites have been studied by ...
Now showing items 4540-4559 of 21879