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Browsing ELibrary by Title
Now showing items 9565-9584 of 21934
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(2004)Scapolite is usually known as a mineral of metamorphic rocks and skarns. Primary-magmatic scapolite is extremely rare. This article presents data on the primary scapolite first detected in rare metal pegmatites. The ...
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(1989)The results of our thermobarogeochemical study of rocks of the anorthosite complex discussed here allow us not only to estimate the parameters of the fluid directly in inclusions from different minerals, but also to trace ...
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(2001)Process of crushing the brittle layer has been considered. Mathematical models are used for calculating the deformations and stresses. Simple calculations are provided due to the use of method of finite elements and a ...
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(2000)Results of macroseismic and instrumental investigations were summarized to formulate the basic requirements on an intensity scale. Several empirical relations are quoted to show that these requirements are indispensable. ...
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(2001)Opportunities for development of getting the coal with opencast method in Russian Federation have been considered. Efficiency of further development is largely connected with internal problems in Russian Federation. Part ...
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(1989)We present analyses which suggest that single or multiple water leaches of low-salinity fluid inclusions are suspect and their application to chemical geothermometry is likely to give erroneous results.Leaching experiments ...
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(2002)Problems of perfecting zonal stratigraphic scales based on the paleontologic evidence are discussed. In all the diversity of biostratigraphic units we operate with, there are two basic types-biostratigraphic zones lacking ...
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(1986)Some general problems of seismic studies of heterogeneous geological media (HGM) are discussed. Two types of HGM are studied: thin-layered periodical media and porous saturated media. The parameters determining the properties ...
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(2004)It is shown that siderite is unstable during sedimentation, diagenesis, and metamorphism of sedimentary and volcanosedimentary rocks. Regularities in the distribution of siderite in Precambrian jaspilites (iron formations), ...
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(2004)It is shown that peat bogs, which accumulate coal- and siderite-bearing sediments, serve as a generator of ferruginous solutions with the significant part of Fe migrating from them in the form of metalloorganic compounds. ...
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(2001)The Mongol-Okhotsk orogenic belt occupies a pivotal position among the Paleozoic orogenic belts of Central Asia, and at the same time is closely linked to the Mesozoic orogenic belts of the western Pacific framing. Recognition ...
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(1996)This paper considers the litho-facial environments that existed in the Caucasus region during the Oligocene and Miocene. The analyzed distribution patterns of reef deposits, evaporites, rock slide and avalanche facies, ...
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(1990)The results of investigations of the seismicity of the Baikal rift zone are considered on the basis of an instrumental survey of small shocks, macroseismic information on strong earthquakes of the past, and data on ...
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(2004)History of the evolution of concepts concerning stages of sedimentary rock formation is reviewed to show the conditional character of stadial boundaries and unreasonableness of their detailed subdivision. An insufficient ...
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(2004)All the aspects of the International stratigraphic scale (ISS) versions prepared by the International Commission on Stratigraphy in 2000 and 2002 are analyzed to show their similarity with and differences from the General ...
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(2002)K–Ar ages of Gulf Coast shales do not correspond to diagenetic ‘events’, but are a combination of inherited detrital ages and authigenic overprints. The key to understanding K–Ar ages of shales is the fate of the 40Ar when ...
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(1989)We have recently developed a method in which the spatial components of the strain and displacement tensors are determined in a model of an inhomogeneous crust and have developed algorithms from them, which we describe in ...
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(1989)In this report the authors suggest a technique for deriving synthetic data which is not only useful for evaluating and comparing the efficiency of the existing algorithms, but can also lead to new algorithms for the ...
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(1988)Thermal analysis is widely used to determine the composition of disseminated carbonaceous matter (DCM). Experimental studies of other authors and our work have shown that distortion of the temperature curve of CM starts ...
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(2002)We present a numerical approach, based on a spectral analysis, for the initiation of the unstable slip on a finite fault region. First we focus on one fault model. We study the relationship between the weakening parameter ...
Now showing items 9565-9584 of 21934