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Now showing items 1-20 of 41010
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(2003)Впервые выделен и описан этап сильнейшего в нашей эре многофакторного природного катастро-физма на Камчатке, датированный 0-650 гг. Его главными компонентами были: последние к настоящему времени катастрофические извержения ...
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(2000)Recent experimental studies on unlithified sediments suggest that the compaction is in part viscous. At the basin scale and on a geological time scale, processes such as pressure solution can be approached by creep ...
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(PANGAEA, 2017-01-03)Global variations of the radionuclide 10Be that are almost simultaneous provide a powerful tool to synchronize 10Be records from different locations. We compared the 10Be record of the Akademii Nauk (AN) ice core (Russian ...
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(2004)In the previous chapters we have argued that cohesive sediment contains various materials, such as sand, organic residue of plants, and sometimes contaminants. The organic matter is degraded under aerobic (top ~ ...
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(2000)A lack of direct spectroscopic evidence linking cations to the clay mineral structure is a primary reason for many ambiguities regarding the location and structure of the binding sites. This study attempts to obtain such ...
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(1999)Single phase rutile-cassiterite solid solutions (Sn(1-x)Ti(x))O2 with x = 0.00, 0.15, 0.30, 0.47, 0.70, 0.90, 0.99, 1.00 were synthesized above the solvus temperatures in the system SnO2-TiO2, cassiterrite-rutile, from ...
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(2002)More than 200 000 ring-width measurements from 384 trees were obtained for 20 individual sites ranging from the lower to upper local timber-lines in the Northwest Karakorum of Pakistan and the Southern Tien Shan of Kirghizia. ...
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(2006)A mud volcano area in the deep waters (> 2000 m) of the Black Sea was studied by hydroacoustic measurements during several cruises between January 2002 and June 2004. Gas bubbles in the water column give strong backscatter ...
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(2006)Interaction of dissolved aqueous species with natural organic matter (NOM) is thought to be important in sequestering some species and enhancing the transport of others, but little is known about these interactions on a ...
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(1996)133Cs MAS NMR and Cs XPS were used to study the adsorption of Cs on kaolinite, montmorillonite, corundum, and gibbsite from 0.1 N and 0.01 N CsCl solutions. XPS spectra for all samples except gibbsite contain strong signals ...
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(1996)133Cs MAS NMR of Cs-exchanged illite, kaolinite, boehmite, and silica gel is shown to be a powerful tool to investigate the adsorption sites and atomic dynamics of Cs on mineral surfaces. Cesium is adsorbed on these mineral ...
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(Федеральное государственное автономное образовательное учреждение высшего образования «Северный (Арктический) федеральный университет им. М.В. Ломоносова», 2018)The Suhoe Sea Gulf is a unique White Sea water body. Taking into account the risk of contamination of the White Sea with radionuclides as a result of the activities of the domestic and foreign nuclear industry and considering ...
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(1991)13C-enriched glasses of albite, nepheline, and sodamelilite compositions were quenched from melts at 1350–1625°C and 10–35 kb, and studied using 13C and 27A1 MAS NMR. Distinct resonances for molecular CO2 and carbonate ...
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(2006)The abundance of the doubly substituted CO2 isotopologue, 13C18O16O, in CO2 produced by phosphoric acid digestion of synthetic, inorganic calcite and natural, biogenic aragonite is proportional to the concentration of ...
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(1998)The stable isotopic composition of marine dissolved organic carbon (DOC) was measured with a high temperature, sealed tube combustion technique. The δ13C values of DOC (DO13C) were approximately -22%% for all samples that ...
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(1995)Now-extinct 146Sm (t1 = 103 Ma) was present in the early solar system, and lunar basalts might be expected to have inherited small anomalies in 142Nd abundances from mantle sources with variable Sm/Nd ratios established ...
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(2002)The 147Sm-143Nd and 176Lu-176Hf systematics of 21 whole-rock eucrites, including five cumulates, have been investigated by MC-ICP-MS. A statistically significant Sm-Nd isochron was obtained on 18 samples with an age of ...
Now showing items 1-20 of 41010