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Browsing Геология России by Title
Now showing items 16717-16736 of 39124
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(1998)The functional group chemistry and coordination of AsO43--sorption complexes in ettringite [Ca6Al2(SO4)3(OH)12.26H2O] were evaluated as a function of sorption type (adsorption, coprecipitation) and pH using Raman and Fourier ...
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(2002)Infrared (IR) and Raman spectra of leonite-type minerals, K2Me(SO4)(2).4H(2)O (Me = Mg, Mn, Fe), confirm a succession of structural phase transitions between 277 and 120 K. Because the orientation and dynamic behaviour of ...
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(2004)Infrared reflectance, thin-film absorbance, and polarized Raman spectra were acquired from ~100 to ~4000 cm−1 from polycrystalline garnets along the pyrope (Py = Mg3Al2Si3O12)-majorite [Mj = Mg3(MgSi)Si3O12 ] join. We ...
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(1999)The vibrational spectrum of the CaAl2B2O7 was investigated. It was shown that the vibrations of the BO3 groups are present in the region of 1400-600 cm-1, and the bands at 519 nm-1 may originate from the AlO6 vibration. ...
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(2000)This paper presents a concept of vibroseismic monitoring for earthquake-prone areas and the testing results of the estimation of relative variations in seismic wave velocities caused by earth tides at distances of 356 and ...
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(1998)The number of victims from volcanism and the primary cause(s) of death reported in the literature show considerable uncertainty. We present the results of investigations carried out either in contemporary accounts or in ...
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(2017)Satellite based remote sensing of active volcanoes has been performed in various forms since 1965. Compared to “on the ground” observations it lets data to be gathered globally at regular pace for long periods of time ...
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(2001)We present a method for the computation of time-dependent geodetic and geophysical signatures (deformation, potential and gravity changes) due to magmatic intrusions in a layered viscoelastic-gravitational medium. This ...
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VISCOELASTIC RELAXATION MEASUREMENTS IN THE SYSTEM SIO2-NAALSIO4 BY PHOTON CORRELATION SPECTROSCOPY (1997)Relaxation times of longitudinal strain for five supercooled liquids along the join SiO 2 (qz)-NaAlSiO 4 (ne) including the compositions of albite (ab), ab 50 jd 50 , jadeite (jd), jd 66 ne 33 , and jd 33 ne 66 were measured ...
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(2002)The viscosity of albite (NaAlSi3O8) melt was measured at high pressure by the in situ falling-sphere method using a high-resolution X-ray CCD camera and a large-volume multianvil apparatus installed at SPring-8. This system ...
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(2001)The shear viscosity of a suspension of deformable bubbles dispersed within a Newtonian fluid is calculated as a function of the shear rate and strain. The relative importance of bubble deformation in the suspension is ...
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(1996)To investigate the influence of microlites on lava flow rheology, the viscosity of natural microlite-bearing rhyolitic obsidians of calc-alkaline and peralkaline compositions containing 0.1-0.4 wt.% water was measured at ...
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(2000)Viscosity of melt at high pressure provides an important clue to understanding the dynamics of magmas in the Earth's deep interior. We measured viscosity of the albite melt to 7 GPa at 2000 K by the falling sphere method ...
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(2001)The viscosity of emulsion and suspensions in the presence of two types of nano-size particles that, have different affinity for oil, have been investigated. It has been found out that both oil-solid suspensions and ...
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(2001)The temperature dependence of viscosity was investigated at 1 atm and at temperatures near the glass transition in the dry Qz-Ab-Or system [SiO2 (Qz)-NaAlSi3O8 (Ab)-KAlSi3O8 (Or)]. This system is particularly difficult for ...
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(2003)Anisotropy of viscosity in rocks has a significant effect on the development of geological structures, as demonstrated in several theoretical and analogue model studies. This paper develops the results of a self-consistent ...
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(2005)We develop a steady-state fluid-mechanical analysis describing the effect of strain partitioning on viscous energy dissipation. As observed in experimental studies of shear deformation of partially molten rocks, strain ...
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(1999)The detection of several ultralow velocity zones (ULVZ) on the core-mantle boundary (CMB) together with the recent estimates of the lower-mantle solidus would suggest that some sort of melting may occur inside the upwellings ...
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(2022)A large amount of continuously increasing textual geoscience data is stored and not fully utilized. Text mining enables the discovery and analysis of valuable information,and presents valuable insights hidden in geological ...
Now showing items 16717-16736 of 39124