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Browsing by Title
Now showing items 19605-19624 of 43490
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(1999)Paleontological study of the Upper Cretaceous sediments from wells 502 and 28 in the Volgograd region revealed distinct radiolarian and foraminiferal assemblages. Two stratigraphic levels, Coniacian-Santonian and upper ...
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(1996)Radiolarians and nannofossils have been studied in the two most complete upper Eocene sections of the Fergana depression, the classical region of the shallow-water Paleogene deposits in the southern part of the former ...
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(2002)Short-period array recordings from Pacific earthquakes show precursors to PP produced by underside reflections of P-waves off the discontinuities in the upper mantle. We use these events to study the structure of the ...
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(Днепропетровский национальный университет им. Олеся Гончара, 2019)The first discoveries of mummified carcasses of the woolly rhinoceros, mammoth, horse, roe deer and other animals were made at a depth of 12 m in the course of mining work at an ozokerite mine near the village of the ...
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(2002)Within the Alatau anticlinorium of the South Urals (the Zilim River middle course), structure and sedimentation settings of terrigenous and carbonate deposits of the Tangaur Subgroup of the Upper Riphean Karatau Group are ...
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(2002)Earthquake cumulative frequency-magnitude (CFM) distributions are described by the Gutenberg-Richter power law where the exponent is the b-value. Although it has been reported that the b-value changes before large earthquakes, ...
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(1999)The distributions and abundances of alteration types and carbonate minerals in sections of upper ocean crust have been measured in order to determine the carbon budget in altered ocean crust. Our results show that the ocean ...
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(2003)The mineral composition of uranium blacks was studied using analytical transmission electron microscopy based on selected-area electron diffraction. The stages of formation of mineralogical zoning in supergene profiles of ...
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(2006)The Paleoproterozoic Sioux Basin and the Baraboo, Barron, Flambeau, McCaslin, and Waterloo quartzites in northcentral USA are all supermature quartz arenites that are among the world's oldest redbeds. These quartzites were ...
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(2006)The most powerful and determinant step affecting the efficiency and economy of a quarry is the rock fragmentation by blasting techniques. Economic investigations, considering sequential costs prove that blasting techniques ...
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(2002)Satellite radar altimetry is the most important data source for ice sheet elevation modeling but it is well established that the accuracy of such data from satellite borne radar altimeters degrade seriously with increasing ...
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(2002)Discusses the use of miller indices in the description of crystals. Definition of the miller indices; Significance of indices for the description of the geometry of crystals; Application of indices for the description of ...
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(2001)The determination of ground surface temperature history (GSTH) from present borehole temperature defines an ill-posed inverse problem for which the required regularization must reflect the stochastic properties of both ...
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(1999)Possibilities are discussed for the fast determination of seismic velocities in ocean-continent transition zones based on recordings of oceanic earthquakes, where a third phase (T-phase) arrives besides the ordinary P and ...
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(2002)The characteristics of an end-member formula are defined as follows: (1) the chemical formula must be fixed no variable chemical components are possible (2) the end-member formula must be compatible with the crystal structure ...
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(2003)As many particle-associated contaminants and nutrients are supply controlled, the question of particle source is crucial. In addition, sediment storage has important implications for the delivery and fate of pollutants. ...
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(1996)This article is intended to evaluate the probabilities of occurrence of mainshocks immediately after the occurrence of possible foreshocks and propose an optimal prediction algorithm based on possible foreshocks along the ...
Now showing items 19605-19624 of 43490