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Browsing ELibrary by Title
Now showing items 9252-9271 of 21879
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(2003)The preceding publications (Mochalov et al., 20021,2) were dedicated to a detailed mineralogical characterization of all large, medium, and small placer deposits and collectors in the area of development of the multiphase ...
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(1990)Soviet and foreign authors repeatedly have used the distribution patterns of platinum-group elements (PGE) to determine more accurately the origin of ore-bearing igneous rock associations. We analyzed the distribution of ...
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(2003)The nature of Re-platinum-group element (PGE; Pt, Pd, Ir, Os, Ru) transport in the marine environment was investigated by means of marine sediments at and across the Cretaceous-Tertiary boundary (KTB) at two hemipelagic ...
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(2004)Mineralization in the platinum-group elements occurs in lodes in the dunite – clinopyroxenite – gabbro Gal’moenan complex, in the Koryak–Kamchatka Platinum Belt of Russia, and in associated placers, namely those along the ...
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(1990)The structural and magnetic data for the Pt-Fe and Pt-Fe-Cu systems are reviewed in the light of recent advances. Tetraferroplatinum (PtFe) and tulameenite (Pt2FeCu) are both tetragonal with similar cell size. Studies of ...
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PLATINUM-PALLADIUM MINERALIZATION IN CHROMITE ORES FROM ULTRABASIC ROCKS OF THE WESTERN SAYAN REGION (2004)The Kalna Massif incorporates a specific PGM mineral assemblage. Data on analogous ophiolite complexes in other regions of the world [3] suggest a comercial significance of the Kalna PGM mineralization characterized by the ...
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(2003)Apart from sea-level change caused by ocean-water volume change, tide-gauge measurements are also affected by vertical movement of the earth's surface and by geoid change. To study these phenomena more closely, we consider ...
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(2000)Comparative analysis of Pleistocene climatic events in the Black and Mediterranean seas is used to improve the Pleistocene stratigraphic scale for the Mediterranean region, where beds (terraces) yield tropical molluscan ...
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(2001)Using satellite synthetic aperture radar (SAR) imagery we are able to identify many glacial features on the Russian landscape that were previously unobservable by scientists outside Russian institutes. Observations from ...
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(2004)This chapter presents an explanatory note to the digitized map of ice limits compiled for the Russian North, beyond the limits of the Fennoscandian glaciation. Although the principal ice limits in Central Russia were already ...
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PLIOCENE-LOWER QUATERNARY PLANKTONIC FORAMINIFERAL BIOSTRATIGRAPHY AND PALEOCEANOLOGY ODP HOLE 677A (2003)Planktonic foraminifers from the Pliocene and Lower Quaternary sediments of ODP Hole 677A are thoroughly studied. Many encountered zonal taxa are demonstrated to be the reliable biostratigraphic markers. Planktonic ...
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(1996)Diatoms from a 34-m-thick member of Pliocene-Pleistocene sediments in the near-continental part of the Tartar Strait were studied. The beginning of the Pliocene was characterized by marine neritic environments indicating ...
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(1996)In analysis of the stratigraphic distribution of planktonic foraminifers in the Pliocene–Lower Quaternary sediments of the North Pacific, and research of the space-time distribution dynamics of 60 species at four levels ...
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(2003)A sample of Pb-rich baksanite was recovered in a magnetite-andradite skarn from the Tyrnyauz W-Mo deposit, in the northern Caucasus, Baksan River valley, Kabardino-Balkaria Republic, Russian Federation. The rock sample ...
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(1998)In an effort to document the source of the parental melts to carbonatites, we have measured rare gases in 380 Ma carbonatites and associated mineral assemblages from the Kola Peninsula, eastern part of the Baltic shield ...
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(2000)A time-space relationship between large igneous provinces (LIPS), present day hot spots, and the fragmentation of Pangea has been documented over several decades, but the cause of fragmentation has remained elusive. LIPS ...
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(1989)The 'porphyrite series' of Georgia consists of basalt, andesite-basalt and andesite lava flows and sheets, pyroclastic units, and comagmatic hypabyssal intrusive bodies, chiefly of the gabbro-dolerite composition. This ...
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PLUTONIC STRUCTURE OF THE SPITSBERGEN MARGINAL PLATEAU IN THE NORTHEASTERN PART OF THE GREENLAND SEA (1989)Plate tectonics suggest that the first stage of rifting in the areas of the Norwegian Sea and of the present southern part of the Greenland Sea, and in the Eurasian deep-sea basin, began about 60 million years and ended ...
Now showing items 9252-9271 of 21879