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Browsing ELibrary by Title
Now showing items 8224-8243 of 21934
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(1998)We report on the occurrence of fullerenes in Proterozoic shungite (∼2 Ga) from the shungite mine, Kondopoga, Karelia, Russia (62.12°N 34.17°E). The presence of fullerenes has been confirmed by mass spectrometry, with peaks ...
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(2001)The polar fraction, isolated from the off-line pyrolysate at 400°C of a Late Tithonian, sulphur- and oxygen-rich, kerogen was examined via Raney Nickel desulphurization and TMAH thermochemolysis. Important information on ...
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(1999)Mylonitic rocks associated with the south-dipping detachment fault of the Yagan Onch Hayrhan metamorphic core complex in southernmost Mongolia indicate subhorizontal south-southeast directed extension in the Early Cretaceous; ...
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(1988)To make a synchronous survey of an eddy field over a large area (300 miles × 300 miles) the Institute undertook in late 1987 the interdepartmental Megapoligon expedition in the northwestern Pacific Ocean, east of Japan and ...
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(2001)Estimates of the effective elastic thickness (Te) of the oceanic lithosphere based on gravity and bathymetric data from island loads are commonly significantly lower than those based on the wavelength of plate bending at ...
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(2003)The excitation mechanism of the Chandler wobble (CW) is investigated by examining the power spectra of oceanic angular momentum (OAM) excitation (1985-1995) and two series of atmospheric angular momentum (AAM) excitation. ...
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(2002)Oceanic contributions to the annual and semi-annual wobble of polar motion have been evaluated by Wünsch (Wünsch, J., 2000. Oceanic influence on the annual polar motion. J. Geodynamics 30, 389–399) using three different ...
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(2001)The Precambrian-Cambrian (PC-C) boundary separates fossils representing two discrete evolutionary phases: the Neoproterozoic soft-bodied Ediacarian biotas and Cambrian small shelly faunas. The biological discontinuity is ...
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(1989)In East Kamchatka, Cretaceous oceanic rocks are known on the Cape Kamchatskiy peninsula and in the melange zones of the East Ranges. The authors' investigations in 1985-1987 revealed oceanic rocks in the eastern part of ...
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(2003)We propose a unifying explanation for the four major icehouses during the past c.620 million years: earliest Oligocene to Present; early Carboniferous to early Permian; late Ordovician and late Vendian (the ‘snowball Earth’) ...
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(2000)Oceanic contributions to the seasonal wobbles of polar motion are evaluated using three different ocean circulation models: (a) the Parallel Ocean Climate Model; mass term only, i.e. tensor of inertia changes; (b) the model ...
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(2000)Statistical study of basalts from mid-ocean ridges differing in spreading rate shows that two main petrochemical groups of basalts, N-MORB and ferrobasalts, are zonally distributed along ang across their crest. Ferrobasalts ...
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(2004)An Earth system model of intermediate complexity, CLIMBER-2, is used to simulate the oxygen-18 content of the water masses (H182O) in the oceans. Firstly, we forced CLIMBER-2 with the fluxes from the atmospheric general ...
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(1998)Field studies combined with chemical and isotope data indicate that the Kostomuksha greenstone belt in the NW Baltic Shield consists of two lithotectonic terranes, one mafic igneous and the other sedimentary, separated by ...
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(2003)The geologic structure, geochemistry, lithology, and paleontology of the Late Cambrian-Early Ordovician volcanosedimentary Zasur'ya Group in Gorny Altai are considered. Its geochemical parameters, lithologic features, and ...
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(2001)Isotropic shear-wave velocities from the Ekström/Dziewonski S20 global tomographic model and residual `crust-free' gravity are used to determine density-velocity relations for various mantle layers by inversion. The residual ...
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(1997)A new synthesis of the Black Sea oceanography is presented, primarily based on studies carried out in the southern Black Sea, as well as on some recent work covering the entire basin, obtained in a new era of increasing ...
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(2003)The distributions of Al3+/Mg2+ and Al3+/ Fe3+ were studied in the octahedral sheet of illites and smectites. Cation exchange interaction parameters J i , as first, second, third and fourth neighbours were calculated by ...
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(2002)We use drainage patterns, geological markers and geomorphological features to determine a right-lateral offset of ∼50 km, and possibly as much as ∼70 km, on the Main Recent Fault in NW Iran. This fault trends NW–SE and ...
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(2001)The OH content of four rutile and two cassiterite single-crystals was studied by nuclear reaction analysis (NRA) and by polarised FTIR microspectroscopy. The OH absorption bands of both minerals are centered around 3300 ...
Now showing items 8224-8243 of 21934