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Browsing ELibrary by Title
Now showing items 8690-8709 of 21821
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(2002)A new compilation of deep seismic reflection data, in combination with the results of recent geological and isotopic investigations, provides the basis for significantly refined structural and evolutionary models of the ...
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(2002)Palagonite is the first stable product of volcanic glass alteration. It is a heterogeneous material, usually with highly variable optical and structural properties, ranging from a clear, transparent, isotropic, smooth and ...
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(1996)The vertical distribution of macrofossils (echinoids, biyozoans, brachiopods, bivalves, and others), and planktonic and benthic foraminifers was studied in several Paleocene and Eocene sections of western Mangyshlak. The ...
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(2004)Fossil biogenic phosphate of fast-growing primary bone tissue of dinosaurs can preserve a histologic and isotopic time-series of annual seasonality in temperature variations, similar to tooth enamel and other accretionary ...
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(1998)Krassilov wrote in the beginning of his book (1989), that nearly all eminent botanists considered it their duty to speak on the problem of angiosperm origin. Conse- quently, as an entomologist, because of the close asso- ...
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(2003)Complex trace fossils include structurally elaborate biogenic structures such as the large, spiral forms of Zoophycos and the intricately organized graphoglyptids; compound structures consisting of connected parts that ...
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(2001)Diverse assemblages of silicified microfossils have been detected in lenses of black chert within peritidal carbonates of the Neoproterozoic (Upper Riphean) Shorikha and Burovaya formations, Turukhansk Uplift, northeastern ...
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(1999)The purpose of this paper is to provide an overview of paleoceanography and paleoclimatology as a framework for other papers dealing with The Earth System: Geochemical Perspectives. An introduction to both paleoceanography ...
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(2003)In the Paleocene, most of the present West Siberian plain was occupied by a vast epicontinental sea, which reached from the present Arctic and Atlantic oceans in the North to the Aral Basin in the South. Climate and ocean ...
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(2003)In the northeastern Peri-Tethys epicontinental basin stretching from the Black Sea to Tadjikistan, a sapropelitic bed with total organic carbon (TOC) contents up to 20% and enriched in redox-sensitive elements was deposited ...
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(2001)Lithology, microfossils, and stratigraphy of the uppermost Paleocene - lowermost Eocene predominantly terrigenous and siliceous sediments from the Sokolovskii section located in the Turgay Passage, northern Kazakhstan, ...
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(2001)Two boreholes on the Akademichesky Ridge, 100 and 200 m deep (BDP-96-1 and BDP-96-2), were drilled and cored continuously as part of the Baikal Drilling Project. Results of low-frequency magnetic susceptibility measurements ...
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(2000)Drilling experiments were performed in 1998 on the Akademichesky Ridge at 53 degrees 44'48 " N and 108 degrees 20'34 " E. The borehole depth was 670 m, the water depth was 333 m. Continuous core sampling was performed to ...
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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 ...
Now showing items 8690-8709 of 21821