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Browsing ELibrary by Title
Now showing items 6454-6473 of 21768
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(2003)Six species of Calamopityales (Lyginopteridophyta) are reported for the first time from the Upper Viscan sandy-silty deposits of Central Russia (vicinity of the town of Borovichi). Among these species, Sphenopteridium ...
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(2004)Five lyginopteridalean species of the genera Rhodeopteridium (Zimmermann) Purkynová and Sphenopteris Brongniart and one species of Rhynchogonium Heer (Medullosales=Trigonocarpales) are reported from the vicinity of the ...
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(2002)Results from a numerical ice-sheet model were matched with geological evidence detailing the extent and timing of the Late Weichselian ice sheet in the Eurasian Arctic, through simple adjustments in the model’s environmental ...
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(2003)Data from ice cores suggest that Late-glacial and early Holocene atmospheric CO2 variations were rather conservative, the most important change being a gradual Younger Dryas increase. By contrast, palaeo-CO2 records based ...
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(2004)The aim of the study is to record the occurrence of sediment deformation structures in one of the tectonically most active areas on the globe, the Tien Shan range in Central Asia and to examine the significance of the ...
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(2004)A comparison of the Black and White Seas, which differ in their tectonic, glacial and climatic history but which share a strong dependence upon limited water exchange with the world ocean, represents an opportunity for the ...
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(2001)Very low to zero shallow dip angles are observed at several moderately young subduction zones with an active trenchward moving overriding plate. We have investigated the effects of latent heat for this situation, where ...
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(1987)The Chordi Deposit is located in the Oni district, Georgia, among Middle Jurassic volcano-sedimentary rocks on the 'andesite line' of the Gagra-Dzhava structural-metallogenic zone. It consists of a series of steeply dipping ...
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(2000)The proposed study is based upon the joint use of pairs of seismic rays refracted and reflected from the Earth's surface (scheme RR-R). This approach makes possible studies of the upper mantle in "mute" seismic regions ...
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(1990)A method allowing detailed mapping of lateral inhomogeneities of the upper mantle in mobile regions of various types has recently been developed. The method is based on the analysis of the absorption patterns of short-period ...
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(2001)When a new sedimentary unit is deposited over a region with significant differences in the thickness of the pre-existing sedimentary cover, the thickness of the new unit may express lateral differences in sediment compaction ...
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(2002)Lateral motion of material relative to the regional thermal and kinematic frameworks is important in the interpretation of thermochronology in convergent orogens. Although cooling ages in denuded settings are commonly ...
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(2004)Differences in the viscosity of the earth's upper mantle beneath the western US (∼1018–1019 Pa s) and global average values based on glacial isostatic adjustment and other data (∼1020–1021 Pa s) are generally ascribed to ...
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(2000)This study of the lateral chemical variations of amphiboles from phenocrysts in the andesites of submarine volcanoes located on the Sea of Okhotsk slope of Iturup Island, Kuril Island Arc, did not reveal any significant ...
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(2002)Several catalogues of global earthquakes reported for the time period from 1900 to 2000 have been compiled to examine lateral variations of the modal (a/b) values as derived from the Gutenberg-Richter empirical law. For ...
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(2004)Eighty-seven species of molluscs were obtained from the uppermost lower-lowest middle Miocene Higashibessho Formation at Shimo-sasahara, Yatsuo Town in Toyama Prefecture, central Japan. Among them, Pagodula shojii is new ...
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(2001)The helcionelloid mollusc Chuiliella elenae gen. et sp. nov. is described from the Lower Ordovician of Kazakhstan. It represents the geologically youngest record of a group of mainly bilaterally symmetrical ancient molluscs ...
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(2001)I present a new method for reconnaissance cyclostratigraphic study of continuously cored boreholes: the generation of detailed sediment color logs by digitizing Ocean Drilling Program (ODP) core photographs. The reliability ...
Now showing items 6454-6473 of 21768