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Browsing ELibrary by Title
Now showing items 8639-8658 of 21253
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(1989)Several minerals, including quartz, calcite and fluorite, have paleodosimetric properties, and methods of mineral prospecting and geological dating that make use of them have been developed. In the present paper we discuss ...
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(2002)During the Middle-Late Ordovician, Mongolian heliolitoids increased their sizes, diversity of colony shapes, and longevity. Their biotopes, restricted to the sublittoral zone, were more uniform than those of the Tabulata ...
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(1996)The ecosystem of the formation period of low-calorie oil shales and sapropel clays at the final Dorsoplanites panderi phase of the basin evolution was examined. Paleobionomic reconstructions were made on the basis of ...
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(1994)Petroleums and bitumens from Early Proterozoic (≈ 1800 Ma) to Miocene (≈ 15 Ma) age marine strata contain 24-isopropylcholestanes, a novel group of C30 steroids. The abundance of these compounds, relative to 24-n-propylc ...
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(2004)The 6-m long sediment core ASV-987 was collected from the deep part of the glaciated Russkaya Gavan' Fjord at the northwestern coast of Novaya Zemlya, Barents Sea, in 1997 (r/v Akademik Sergei Vavilov). The core was ...
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(2003)The genera Ameghinoia Viana et Haedo Rossi and Polanskiella Rossi de Garcia are synonymized under Archimyrmex Cockerell, which now includes three species, A. rostratus (Middle Eocene, United States), A. piatnitzkyi (Upper ...
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(2003)New data on the taxonomic composition, geographic and stratigraphie occurrence of Paleogene ciliates and problematic microfossils in the southern former Soviet Union are discussed. New taxa of tintinnid ciliates, Tianella ...
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(1996)Analysis of the Paleogene planktonic foraminifers from the sections of Kamchatka, Koryak Highland, the North Pacific, and Japan revealed several age levels of the occurrences of warm-water (subtropical) assemblages: late ...
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(1999)The Oligocene Leporidae from the Zaisan Depression (Eastern Kazakhstan) collected by the Joint Kazakhstan-American Paleontological Expedition during 1993 and 1994 are described. A new genus and species of the family ...
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(2003)Understanding past climate change is critical to the interpretation of earth history. Even though relative temperature change has been readily assessed in the marine record, it has been more difficult in the terrestrial ...
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(1997)The taxonomic composition of planktonic foraminifers from the relatively complete Paleogene sections first recovered by deep-sea drilling in high latitudes of the North Pacific allowed these deposits to be dated and ...
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(1997)Results of the litho- and biostratigraphic studies of core samples from more than 40 deep oil and gas prospecting wells drilled in the Kolpakovka depression in the 1980s and 1990s were considered. The lithology of Paleogene ...
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(2003)Paleogeographic maps were constructed to depict the Phanerozoic plate tectonic configuration, paleoenvironment and lithofacies. These maps illustrate the geodynamic evolution of the circum-Arctic region. The relationship ...
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(2001)Origination and growing aridity of Pangea and transition from glacial to ice-free climate led in the Permian-Early Triassic to substantial reorganization in all biosphere subsystems. Lithological-paleogeo- graphic maps ...
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(1998)Global litholologic-paleogeographic maps are compiled for the Berriasian, Valanginian, Hauterivian, and Barremian ages of the Early Cretaceous. Main features of paleogeography, sedimentation environments in oceans, ...
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(1998)Global lithologic-paleogeographic maps were compiled for the Coniacian, Santonian, Campanian, and Maastrichtian ages of the Late Cretaceous. Main features of paleogeography of continental and oceanic hemispheres of the ...
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(2004)Recently obtained great body of new data makes it possible to affirm that the abundance of glaciers in the northern part of West Siberia and the formation of giant impounded lakes as a result of the damming of the Ob and ...
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(1999)Paleogeography is the subdiscipline within the geosciences that studies the physical and biological geography of the geologic past, including the configuration and latitudinal distribution of continental landmasses, their ...
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(2002)New data prove that a major rise in the Baikal water level (to 120-150 m) in the Middle Pleistocene may have been caused by tectonic uplift of the western side of the Baikal basin and is marked by medium and high terraces ...
Now showing items 8639-8658 of 21253