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Browsing ELibrary by Title
Now showing items 12446-12465 of 21936
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(2000)The Siberian Platform is well characterized paleontologically, sedimentologically, and geochemically. This makes it a suitable region for choosing the stratotypes of the lower and upper boundaries of the Lower Cambrian. ...
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(1999)In the Mangyshlak Mountains, the lower Aptian deposits are represented by thin beds (0.5-1.5 m) of sandstone and conglomerate, and in the Kugusem anticline, this time range spans two conglomerate beds incorporating an ...
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(2000)The lower boundary of the Triassic should be placed at the base of the Otoceras Beds. In the boreal sections, these beds yield ammonite species of the Otoceras concavum and O. boreale zones. The upper part of the boreale ...
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(1999)In the Tethys region, the Triassic starts with the ammonite Otoceras woodwardi Zone accepted as basal in this system more than a hundred years ago. The boundary layers in Ciscaucasia, Iran, western Pakistan, Kashmir, central ...
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(1998)The Vendian-Cambrian sequences recovered by boreholes K-203 and K-204 and by the deep Eiik Hole 343-0 in the North Siberian platform yielded abundant small-shelled fossils characteristic of the N. sunnaginicus Zone of the ...
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THE LOWER CRUST OF SE BELARUS: PETROLOGICAL, GEOPHYSICAL AND GEOCHEMICAL CONSTRAINTS FROM XENOLITHS (2001)Highly altered alkaline lamprophyre tuffs of Devonian age from SE Belarus contain lower crustal xenoliths that vary from feldspar-rich mafic granulites to rarer feldspar-poor eclogitic granulites, together with coarse-grained ...
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(2004)New taxa of Lower Kazanian terebratulids from the basin of the Sok River are described (family Beecheriidae, genus Sokelasma, species S. guttiformis sp. nov., S. esaulovae sp. nov.). The shell interior of Dielasma angusta ...
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(1997)The Tara-Irtysh region, located in the central part of West Siberia, is of interest because it represents the reference stratotype region for the elaboration of the Neogene stratigraphic scale. The stratigraphic research ...
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(2001)Stratigraphic position and distribution of the lower Oligocene Kurgan Beds in southern West Siberia are considered. Their age is substantiated by the data on malacofauna, ichthyofauna, dinocysts, spores, and pollen. Two ...
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(1998)Information on lithology, trilobites, and ostracodes from some sections of the Volkhov and Kunda horizons of the Volkhov structural-facies zone (the eastern part of the Leningrad region) is presented. Described in the paper ...
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(2004)Upper Cretaceous and Lower Paleocene deposits of the Kronotskii Peninsula and their foraminiferal and radiolarian faunas are considered. As is shown, marine sedimentation during the Late Cretaceous - Early Paleocene was ...
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(2004)The major and trace element geochemistry of the Burzyan fine-grained aluminosilicate clastic rocks of the Bashkir Anticlinorium was used to estimate the composition of provenance and its evolution from 1650-1640 to 1350 ...
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(2002)We have analysed prediffracted S-waves with turning points beneath northern Siberia in a study of anisotropy in the lowermost mantle. Deep-focus earthquakes beneath the Marianas, Izu Bonin and the Sea of Japan recorded at ...
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(2000)Lowrie and Fuller [J. Geophys. Res. 76 (1971) 6339-6349] proposed a test to distinguish between single-domain (SD) and multi-domain remanence using alternating field (AF) demagnetization. However, their criterion for SD ...
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(1997)We report analyses of the 176Hf177Hf ratio for 25 chondrites from different classes of meteorites (C, O and E) and the 176Lu177Hf ratio for 23 of these as measured by plasma source mass spectrometry. We have obtained a new ...
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(1987)Chemical data are reported for the first time for lunar soil size fractions smaller then 2 μm. We report chemical data for 30 elements by INAA in eight size fractions (370−200, 200−94, 94−74, 74−40, 40−10, 10−5, 5−2 and ...
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(2004)The exsolution of volatile phases from silicate magmas controls physical and chemical magma properties and influences large-scale geologic phenomena and processes having major societal and economic implications including ...
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(2003)The chemical potential of oxygen (µO2) in equilibrium with magnesiowustite solid solution (Mg, Fe)O and metallic Fe has been determined by gas-mixing experiments at 1,473 K supplemented by solid-cell EMF experiments at ...
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(2003)The magnetic fabric of loess–palaeosol deposits in Asia, Europe and Siberia, from different sources and spanning different time intervals is examined in this paper. Magnetic fabric was visualised by measuring the anisotropy ...
Now showing items 12446-12465 of 21936