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Browsing by Title
Now showing items 16881-16900 of 39124
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(2000)Numerous publications on shearing as a cause of folding do not refute the idea of buckling being the main process responsible for the formation of fold structures. Deformations of other types may either produce conditions ...
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(2001)When a target variable is sparsely sampled, compared to a densely sampled auxiliary variable, cokriging requires simplifications. In its strict sense, collocated cokriging makes use of the auxiliary variable only at the ...
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(2004)Integrated microstructural observations, X-ray powder diffractometric (XRPD) modal composition, illite Kubler index and chlorite “crystallinity” determinations and vitrinite reflectance measurements were carried out on ...
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(2003)We use a poroelastic modeling algorithm to compute numerical experiments of wave propagation in White’s partial saturation model. The results are then compared to the theoretical predictions. The model consists of a ...
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(2000)The solubility of both β-whitlockite and α-whitlockite has been experimentally determined between 1200 and 1400°C at 1 atm using a wide range of natural rocks and synthetic mixtures as starting materials. The solubility ...
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(2004)Geochemical observations demonstrate that Earth's mantle is heterogeneous, but the sizes, forms, and characteristics of its reservoirs are not constrained. Using laboratory experiments, we have systematically studied a ...
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(1998)Terrestrial noble gas isotope geochemistry provides one of the most powerful geochemical tools presently available for understanding the volatile evolution of the Earth. The data require the existence of isolated reservoirs ...
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(1999)Cold-seep communities have relatively low diversity, are dominated by one or two taxa present in high density and high biomass in comparison with the surrounding fauna, and are restricted to aphotic habitats. Their associated ...
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(1990)Since the 1950's, a large body of information has been collected on the structure and geophysical characteristics of Antarctica. Data from seismic stations both in the interior of the continent and on its coast indicate ...
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(2001)As a physical phenomenon, earthquakes must be predictable to a certain degree. However, the problem is dif®cult, becausethe source volume inside the earth is inaccessible to direct observation and because the most important ...
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(2001)The sedimentary-diagenetic structure stromatactis is widespread in Palaeozoic spiculitic carbonate mud mounds, but occurs only sporadically in Mesozoic sponge carbonate mud mounds. Comparative analysis of Palaeozoic and ...
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(2003)The common observation of sedimentary basin inversion in orogenic forelands implies that rifts constitute weak areas of the continental lithosphere. When compressed, the rifts respond with uplift of the deepest parts and ...
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(1996)Wide angle X-ray scattering (WAXS) measurements have been made on a suite of ''two-line'' ferrihydrite (FHY2) samples containing varying amounts of coprecipitated arsenate. Samples prepared at pH 8 with counter ions chloride, ...
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(1999)Bacterial populations found in subglacial meltwaters and basal ice are comparable to those in the active layer of permafrost and orders of magnitude larger than those found in ice cores from large ice sheets. Populations ...
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(PANGAEA, 2017-09-05)
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WITTITE WITH SE-RICH COSALITE AND BISMUTHINITE FROM NEVSKOE TIN DEPOSIT (MAGADAN DISTRICT, RUSSIA) (1992)A second confirmed occurrence of wittite, one of the four known Pb-Bi-Se-sulfosalts, has been found in the Nevskoe tin deposit (Eastern Siberia). Microprobe analyses of wittite show pronounced variation of Se content (from ...
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(1988)Processes that alter wolframite already begin under endogene conditions, almost immediately after its crystallization from hydrothermal solutions, and lead to its total breakdown or replacement at that time or later in the ...
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(2000)Measurements of the dissolution rates of wollastonite in solutions with pH ranging from 2 to 6 in an externally recycled mixed flow reactor show that the concentrations of Ca and Si in the reactor effluent decline with ...
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(2019)A large amount of descriptive information is available in geosciences. This information is usually considered subjective and ill-favoured compared with its numerical counterpart. Considering the advances in natural language ...
Now showing items 16881-16900 of 39124