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Browsing ELibrary by Title
Now showing items 2367-2386 of 21821
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(2002)An eccentric loading approach was applied to quantify confinement effects and examine the energy balance in a slab under buckling load. It was indicated that confining pressure provided by fill or broken rock material can ...
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(1997)The stoichiometry of pyrite dissolution by Fe(II) ions was studied in chloride media around pH 2. Pyrite was found to dissolve nonstoichiometrically during the initial tens of hours and a S-rich layer was formed on the ...
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(2001)In-solution atomic-force microscopy was used to characterize molecular dimensions and aggregate structures of natural organic matter (NOM) sorbed to the basal-plane surfaces of muscovite and hematite as a function of pH ...
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(2003)Mineral dissolution rates have been rationalized in the literature by surface complexation models (SCM) and morphological and geometric models (GM), and reconciliation of these conceptually different yet separately highly ...
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(2004)Biostratigraphical study of the early to mid-Ordovician conodont fauna from ribbon-banded radiolarian cherts of the middle Burubaital Formation in Central Kazakhstan reveals an almost complete succession of conodont biozones ...
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(2002)This study is to clarify the geologic time of the Dumugol Formation in the Tanyang area on the basis of conodonts. A total of 245 identifiable conodonts were recovered from 56 samples. They are classified ...
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(2001)The task of this paper is to discuss the Frasnian Stratigraphy of the central region of the Russian Platform; to analyse the distribution of the most abundantly occurring platform conodonts: to revise the zonal schemes ...
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CONODONTS IN XENOLITHS OF SEDIMENTARY ROCKS FROM KIMBERLITE PIPES OF THE DALDYN-ALAKIT AREA (SAKHA) (2003)Diverse conodont assemblages discovered in xenoliths of sedimentary rocks from kimberlite pipes are analyzed and correlated with zonal stratigraphic scales. Based on the original and published data, a Paleozoic rock sequence ...
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(2001)A numerical cladistic analysis of the conodont family Palmatolepidae has been undertaken to determine the applicability of the technique to group-wide systematic revision. Results suggest a new hypothesis of relationships ...
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(1988)Fields of granitic pegmatites containing rare metals in industrially important Precambrian zones are accompanied by regional zones of hydrothermally-altered rocks containing high concentrations of hydromagmatophilic elements ...
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(2002)Magmas erupted at mid-ocean ridges (MORB) result from decompression melting of upwelling mantle. However, the mechanism of melt transport from the source region to the surface is poorly understood. It is debated whether ...
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CONSIDERATION ON THE OCCURRENCE OF THE AL13 POLYCATION IN NATURAL SOIL SOLUTIONS AND SURFACE WATERS (2001)Equilibrium speciation calculations were performed (1) for soil solutions and streamwaters collected in central and eastern France and (2) for simulated waters at 0 and 25°C, to assess the highest concentration of Al13 ...
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(2001)This paper considers the factors that influence ground CO2 fluxes as measured by the chamber method. New data and published results are used to illustrate the effects of various factors on CO2 emissions from the ground. ...
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(1990)A "double dipole" model with a zero moment was first used to describe faults in an earthquake focus by Honda and Vvedenskaya [l]. But until recently, publications dealing with alternative models continued to appear [2]. ...
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(1990)The existence of anomalously high heat flows near the surface would make it fundamentally impossible to solve the inverse problem of geothermometry, i.e., the determination on the basis of the heat flow, of the temperatures ...
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(2004)A disadvantage of fully non-linear methods of inversion, through exploitation of the properties of model space, is the absence of a well-developed framework for error assessment. To rectify this problem an auxiliary weighting ...
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(2004)Earth orientation parameters as observed by space-geodetic techniques show a broad spectrum of frequencies. Many efforts have been made to relate spectral peaks to geophysical processes, such as atmospheric or oceanic ...
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(2004)The Markovian model of mixed-layering that has been used until now for the modeling of X-ray diffraction (XRD) patterns of 2:1 phyllosilicates describes the mixed-layer crystals as stacks of 'layer units' (LUs) that associate ...
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CONSOLIDATION OF CONTINENTAL CRUST IN LATE ARCHAEAN-EARLY PROTEROZOIC TIMES: A PALAEOMAGNETIC TEST (2003)The proposition that continental crust consolidated during late Archaean-early Proterozoic times as spatially distinct groups of cratons is tested using palaeomagnetic results assigned to the interval 2900-2200 Ma. Geological ...
Now showing items 2367-2386 of 21821