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Now showing items 11739-11758 of 39124
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(2004)Study of the impact of charged particles, ultra-violet radiation with different wave lengths, and other space energy sources on the abiogenic synthesis of biologically significant compounds (BSC) is closely related to ...
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(1997)Seeded fluorite crystal growth experiments were performed at three different ionic strengths, using a constant addition method and NaNO3 as background electrolyte. By varying the fluorite seed concentration, growth rates ...
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(Федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский горный университет», 2018)The boundaries of the International Chronostratigraphic Chart (ICC) are associated with the natural historical stages of the Earth's development, and their boundaries are usually determined by the palaeogeographical or ...
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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 ...
Now showing items 11739-11758 of 39124