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Now showing items 8942-8961 of 42285
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(2000)The geometrical features and electronic structure of molecular clusters models of two octahedrally coordinated cations in edge-sharing octahedra were studied by means of Hartree-Fock ab initio molecular orbital calculations ...
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(2003)By using a specially designed and constructed isopiestic apparatus, we measured the osmotic coefficients at 313.2 K for the NaOH-NaAl(OH)4-H2O system with the total alkali molality, mNaOHT (mNaOH + mNaAl[OH]4), from 0.05 ...
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(1992)
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(1996)The equivalent elastic thickness (EET) is used to estimate lithospheric strength expressed in response to loading by topography and subsurface loads. The data on EET allow comparisons between different plates and detection ...
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(1991)At present, there are two concepts of the term isostasy. According to the first one, isotasy means hydrostatic pressure conditions at the depth of compensation existing due to mass distributions above that depth. The second ...
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(2004)Decompression of deep, hot continental crust is the primary mechanism of crustal melting, with major consequences for the geodynamics of orogens. Decompression within thickened continental crust may be initiated by processes ...
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(2004)The high-pressure (HP) structural evolution of a natural tetragonal edingtonite from Ice River, Canada, was investigated up to 5.1 GPa using in situ single-crystal X-ray diffraction and a diamondanvil cell. The isothermal ...
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(2006)The Panarechka volcanotectonic calderalike structure (PVTS) was found in the Early Proterozoic Pechenga–Varzuga Rift Belt (fault-lineament) of the Kola region. This is an oval body (21 × 8 km in size) that extends in a NW ...
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(2000)Carbon-isotope compositions of n-alkanes, pristane and phytane, and total organic carbon were measured and compared against isotopic trends of coeval alkadienones from Miocene sediments containing very low organic-carbon ...
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(2006)We have measured the Hf and Nd isotopic compositions of 38 basalts from the Ko'olau drill hole, Hawai'i. The basalts show limited variations in both 176Hf/177Hf and 143 Nd/144Nd (εNd varies from +4.2 to +7.3 and εHf from ...
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(1988)The authors studied ten peridotite inclusions from basalts of the central Vitim Plateau namely eight granite-containing and one spinel-containing 1herzolite from recently discovered alkalic picrite tuff, thought to be of ...
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ISOTOPE CALIBRATED GREENLAND TEMPERATURE RECORD OVER MARINE ISOTOPE STAGE 3 AND ITS RELATION TO CH4 (2006)Large temperature variations on millennial time scales in Greenland characterised the last ice age. Abrupt warmings, known as Dansgaard–Oeschger (DO) events, can be traced in the δ18Oice record of Greenland ice cores. ...
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(1989)Isotope data should help to clarify the problem of the origin of water participating in hydrothermal activity. Thus, isotope data suggest that water participating in calcalkalic magma generation is of crustal (oceanic) ...
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(2006)We report Sr, Nd, and Pb isotope compositions for 17 bulk-rock samples from the submarine Hana Ridge, Haleakala volcano, Hawaii, collected by three dives by ROV Kaiko during a joint Japan - US Hawaiian cruise in 2001. The ...
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(1989)Hydrogen is a common impurity in diamonds, where its average concentration is 0.01 percent; but it may reach levels as high as 0.5 percent in carbonadoes and bort. Determining the isotopic composition of this hydrogen is ...
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(2003)Experimental diffusion couples were used to study chemical diffusion between molten rhyolite and basalt with special emphasis on the associated fractionation of calcium and lithium isotopes. Diffusion couples were made by ...
Now showing items 8942-8961 of 42285