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Now showing items 12017-12036 of 39126
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(1997)The number and age of hyperacidic volcanism events in late-orogenic troughs of the Chatkal-Kurama structural zone are discussed on the basis of the radiometric dating. All K-Ar data available are used, including 90 original ...
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RADIOMETRIC AGES OF BASALTIC ACHONDRITES AND THEIR RELATION TO THE EARLY HISTORY OF THE SOLAR SYSTEM (1997)Pb-Pb mineral isochrons were determined for three cumulate eucrites (Moama, Moore County, and Serra de Mage) and three noncumulate eucrites (Nuevo Laredo, Bouvante, and Stannern). Two noncumulate eucrites (Bereba and ...
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(1988)Carbonate material of the glauconite-bearing horizon underwent intensive recrystallization during early diagenesis, and that glauconite is a product of that very stage of early diagenesis, and that glauconite is a product ...
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(Федеральное государственное бюджетное учреждение науки Геофизический центр Российской академии наук, 2019)Geochemical and mineralogicalanalysis of the bottom sediment cores of smalllakes can be used as the basis forradio-ecological monitoring and environmentalprotection measures. Here, features of theradionuclide activity ...
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(PANGAEA, 2009-07-24)Strontium-90 activity concentrations in surface soils and areal deposition densities have been studied at a site contaminated by an accidental release to atmosphere from the underground nuclear explosion 'Kraton-3' conducted ...
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(1998)The behavior of radon emanations from rocks was observed in monitoring holes drilled in deep mines. The variation of radon concentration was found to be associated with changes in radon diffusivity controlled by the stress ...
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(IOP Publishing, 2016)The article represents the results of a research in radionuclides concentration in coal and rocks of Kuzbass mines as well as radon concentration in operative mines and mined-out spaces. It is proved that radon concentration ...
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(2002)Scintillation properties of a Ce-doped yttrium aluminium oxide perovskite monocrystal optically coupled to a Hamamatsu H5784 photomultiplier are analyzed with a standard bialkali photocathode for radon and radon daughters ...
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(2004)In radon mineral curative waters, according to Russian mineral water classification, the radon concentration should be greater than 185Bq/l. There are about 30 mineral waters with high levels of radon in Russia. Radon-rich ...
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RADULA, OPERCULUM AND CONTRAOPERCULUM OF THE CRETACEOUS AMMONITE ACONECERAS (MOLLUSCA, CEPHALOPODA) (1990)A ridged radula with its characteristic multiapical (5 to 11 denticles) rachidial and first and second lateral teeth has been found for the first time in ammonites. The operculum, contraoperculum and radula, which together ...
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(2002)A wind tunnel study under wind-driven rains was conducted to determine the combined effect of rain and wind on the rainsplash transport process. The rains driven by horizontal wind velocities of 6, 10 and 12 m s-1 were ...
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(2001)A disaggregation methodology for the generation of hourly data that aggregate up to given daily totals is developed. This combines a rainfall simulation model based upon the Bartlett-Lewis process with proven techniques ...
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(2005)Выделено новое семейство Ralfimartitidae, включающее четыре новых рода - Ralfimartites (с R. lautus sp. nov. и R. honoratus sp. nov.), Nolvakites (c N. laxatus sp. nov.), Rozhnovites (c R. limatus sp. nov.), Body-wskites ...
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(1999)Pressures and temperatures of the diamond source region are commonly estimated using chemical equilibria between coexisting mineral inclusions. Here we present another type of geobarometer, based on determination of the ...
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(2001)For many kinds of fluid inclusions, the coupling of microthermometry and Raman microspectrometry is still the only viable option to obtain compositions of single fluid inclusions. A review is given on the basis of 16 years ...
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(2003)A Raman scattering and X-ray diffraction study of the thermal decomposition of a naturally occurring, ettringite-group crystal is presented. Raman spectra, recorded with increasing temperature, indicate that the thermal ...
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(2001)Polarized single-crystal Raman scattering and powder infrared absorption spectra of Fdd2 orthorhombic natural natrolite (Na-1.88 K-0.02 Ca-0.04 )[Al-1.96 Si-3.03 O-10].2.03 H2O from Khibiny, Kola peninsula, were measured. ...
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(1995)Raman spectra were collected for barium silicate, strontium silicate and calcium silicate melts at temperatures ranging from the glass transition region to temperatures as high as 1600°C. For melts less polymrized than ...
Now showing items 12017-12036 of 39126