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Browsing Геология России by Title
Now showing items 21-40 of 39124
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(ИВиС ДВО РАН, 2008)Kamchatkan Volcanic Eruption Response Team (KVERT), created in 1993 through a cooperative effort of Russian and U.S.A. scientists, analyses the data of monitoring of Kamchatkan and Northern Kurile volcanoes to provide ...
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(2000)We report here the first nuclear magnetic resonance (NMR) spectroscopic study of the dynamical and structural behavior of nitrate on the surface and in the interlayer of hydrotalcite-like compounds (15NO3--HT). Spectroscopically ...
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(2000)The oxygen isotopic compositions of seven Al-rich chondrules from four unequilibrated ordinary chondrites were measured in situ using an ion microprobe. On an oxygen three isotope plot, the data are continuous with the ...
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(2001)A problem of long-standing is the origin of the high Δ17O (= δ17O - 0.52 . δ18O) values of melilite in the refractory inclusions of carbonaceous chondrites. The spinel and, usually, also the diopside in the inclusions have ...
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(2001)17α,21α(H)-hopanes are found in low concentrations in sediments and oils, but C30 17α,21α(H)-hopane is the only member of the series which can be detected in the m/z 191 mass chromatogram. The ratio of C30 17α,21α(H)-hopane ...
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(2000)Eucrites are the witnesses of an early magmatic activity in small planetary bodies. Iron meteorites also testify to an early differentiation in planetesimals. Are basaltic magmatism and iron segregation related to each ...
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(1998)W isotopic compositions (measured by N-TIMS) in five iron meteorite groups are used in conjunction with 187Re-187Os isotopic data to constrain the timing of metal segregation and crystallization, respectively, in the iron ...
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(2001)The Re–Os data on Archean komatiites from the Kostomuksha greenstone belt in the Baltic Shield are presented. This greenstone belt has been previously interpreted to represent a former oceanic plateau formed by the emplacement ...
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(2004)The chemistry and budgets of atmospheric gases are constrained by their bulk stable isotope compositions (e.g., δ13C values), which are based on mixing ratios of isotopologues containing one rare isotope (e.g., 16O13C16O). ...
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(PANGAEA, 2001-02-01)
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18O/16O ratios in anhydrous spinel lherzolite xenoliths from the Shavaryn-Tsaram volcano, Mongolia (1987)Anhydrous spinel lherzolite xenoliths from the Shavaryn-Tsaram volcano, which represent unusually clinopyroxenerich samples of upper mantle beneath the Tariat Depression in north-central Mongolia, have particularly low ...
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(1981)A new Klyuchevskoy volcano eruptive cycle encompasses terminal (March 30, 1972 to August 23, 1974) and lateral (August 23, 1974 to December, 1974) eruption stages. The terminal eruption stage resulted in lava flows and ...
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(Дальневосточное отделение Российской академии наук, 2017)This paper presents the results of the May 27 (28), 1995 Neftegorsk earthquake source waveform inversion. Waveform inversion has been done on the basis of data from the Global Seismic Network. Development of the 1995 ...
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(U.S. Department of the Interior. USGS, 2003)In 1998 the Alaska Volcano Observatory responded to eruptive activity or suspect volcanic activity at 7 volcanic centers--Shrub mud, Augustine, Becharof Lake area, Chiginagak, Shishaldin, Akutan, and Korovin. In ...
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(2003)In 1998 the Alaska Volcano Observatory responded to eruptive activity or suspect volcanic activity at 7 volcanic centers--Shrub mud, Augustine, Becharof Lake area, Chiginagak, Shishaldin, Akutan, and Korovin. In addition ...
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(U.S.Department of the Interior. USGS, 2004)
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(2005)The Inner Carpathians comprise several distinct Neogene late-stage orogenic Pb-Zn-Cu-Ag-Au ore districts. The mineral deposits in these districts are closely related to volcanic and subvolcanic rocks, and represent mainly ...
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(2003)Images of the depth and shape of colluvial wedges by 3-D travel time tomography can be valuable in estimating the past history of ancient earthquakes and assessing the earthquake hazard of a fault. Unfortunately, 3-D seismic ...
Now showing items 21-40 of 39124