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Browsing ELibrary by Title
Now showing items 9266-9285 of 21936
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(2004)Thirteen time interval maps were constructed, which depict the Triassic to Neogene plate tectonic configuration, paleogeography and general lithofacies of the southern margin of Eurasia. The aim of this paper is to provide ...
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(1996)The oxygen fugacity of CO2-H2 gas mixtures were measured with a ZrO2 oxygen sensor at high temperatures in a furnace. We confirmed that the oxygen fugacity values measured by the ZrO2 cell are more reducing than those of ...
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(2001)Precise PGE (Os, Ir, Ru, Pt, Pd) abundance data for bulk rock samples, and mineral separates, from a deep differentiated komatiitic basalt lava lake in the Vetreny Belt (Baltic Shield) were obtained using an ICP-MS ID ...
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(2000)We report precise PGE (Os, Ir, Ru, Pt, and Pd) concentrations for komatiite-basalt lava sequences of the Kostomuksha greenstone belt, and for the komatiite standards KAL-1 (Abitibi) and WITS-1 (Barberton). The flowtop ...
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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 ...
Now showing items 9266-9285 of 21936