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Browsing ELibrary by Title
Now showing items 12426-12445 of 21936
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(2001)Extent of the Late Weichselian glaciation in western Arctic Russia is considered uncertain. Grosswald''s model suggesting a continuous and long-lived Barents-Kara Ice Sheet centered on the Kara Sea is questioned by advocates ...
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(2001)In order to reconstruct the Late- and Postglacial vegetation history of the northwestern edge of Beringia, a sediment core was collected from a lake north of the present treeline along the lower Lena River of northeastern ...
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(2003)Using ICP-MS technique, investigated are granitoids of Caucasus Mineralnye Vody (GCMV) present in Miocene-Holocene volcanism development area, as well as composition of their mineral components (using EM and electron probing ...
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(2000)This paper examines the latitude distribution of the number and energy of earthquakes based on the NEIC catalogs (1900-1993). Some features were identified in the latitude distribution of seismicity that are related to the ...
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(2002)The mineral composition of quartz-scheelite and quartz-sulfide (pyrrhotite, pyrrhofite-chalcopy rite with scheelite) ores of the Agylki skarn-Cu-W deposit has been studied in detail. Ores of this deposit contain tungsten ...
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(2001)The yield threshold at which a fully decoupled explosion can be identified has been a recurring issue in the debate on whether the Comprehensive Nuclear Test Ban (CTB) can be adequately verified. Here, we assess this yield ...
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(2003)The product covariance model, the product-sum covariance model, and the integrated product and integrated product-sum models have the advantage of being easily fitted by the use of "marginal" variograms. These models and ...
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(2001)The records of diatom abundance, clay fraction content and magnetic susceptibility from Lake Baikal drill core BDP-96-1 reflect the climate-driven Plio-Pleistocene evolution of the Lake Baikal sedimentation system. In ...
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(2004)Two series of anhydrous experiments have been performed in an end-loaded piston cylinder apparatus on a primitive, mantle-derived tholeiitic basalt at 1.0 GPa pressure and temperatures in the range 1060–1330°C. The ...
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(2004)Two series of anhydrous experiments have been performed in an end-loaded piston cylinder apparatus on a primitive, mantle-derived tholeiitic basalt at 1·0?GPa pressure and temperatures in the range 1060–1330°C. The ...
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(2000)We present the results of analysis of the Li isotope composition of open ocean seawater, nine international rock standards and a C1 chondrite. In addition, we suggest some modifications of the chemical preparation techniques ...
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(1995)The Lodran primitive achondrite is thought to represent some of the earliest events in the differentiation of chondritic asteroids. Most researchers who studied Lodran believe that it is a restite from which a melt, enriched ...
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(2006)In this study, the speciation of Zn2+, Pb2+, and Cu2+ ions sorbed at the calcite surface was monitored during a 2.5-year reaction period, using extended X-ray absorption spectroscopy to characterize metal speciation on the ...
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(1999)In 1996, boreholes BDP-96-1 and BDP-96 penetrated the bottom sediments of Lake Baikal. From the lithological and geochemical correlation of the sediments, the loss from the upper layer of sediments in the cores is estimated: ...
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(1995)Melt viscosity affects virtually all aspects of igneous petrogenesis. Although addition of H2O is known to lower melt viscosities, addition of fluorine is controversial and may raise them. Because these two volatiles most ...
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(2004)In-situ analyses of boron using secondary ion mass spectrometry (SIMS) is impeded by surface contamination of the analysed samples. We analysed 40 different natural and synthetic silicate materials, including meteoritic ...
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(2001)The existance of low-frequency foregoing signals (LFFS) just before the main shock was described by Ihmle and Jordan (1991, 1993, 1994), Brevdo (1998), Levin and Sassorova (1994, 1995, 2000), Umeda (1999). The LFFS may be ...
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(1996)Phase A, Mg7Si2O8(OH)6, is a dense hydrous magnesium silicate whose importance as a host of H2O in the Earth’s mantle is a subject of debate. We have investigated the low-pressure stability of phase A in experiments on the ...
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(2001)In the Baltic region, Devonian sedimentary bedrock is exposed in a wide area extending from north-eastern Estonia through Latvia to the south-eastern Baltic Sea. Westwards in the Baltic Sea, the outcrop terminates against ...
Now showing items 12426-12445 of 21936