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Browsing ELibrary by Title
Now showing items 7841-7860 of 21936
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(2004)In the Kolyma sector of the perivolcanic zone of the Okhotsk-Chukot Volcanogenic Belt (OCVB), we have discovered manifestations of an unusual complex (gold-silver-sulfide-rare metal) mineralization that can be economically ...
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(2004)The hydrothermal oil in the Uzon caldera is represented by two fractions (generations) separated in time and, partially, in space. The first generation is observed as green (rapidly turning brown in air) heavy (0.9148-0.9767 ...
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(2001)Reinvestigation of a fragmentary lindholmemydid turtle from a Mongolian locality Sheergeen Gashoon (late Turonian-Santonian) suggested reassignment to Lindholmemys martinsoni Čkhikvadze, 1975. This restricts the stratigraphic ...
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NEW DATA ON MALLARDITE (NA2SIF6) DEPOSITED AROUND FUMAROLES OF THE GREAT TOLBACHIK FISSURE ERUPTION (1996)Samples of the material deposited around fumaroles were examined by X-ray diffraction on single crystals and polycrystalline aggregates and microprobe analysis. The material was found to contain a rare sodium silicofluoride, ...
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(2004)We carried out a new quantitative estimate of the subsurface water (SW) in the major shells of the Earth's crust. The results obtained and calculation parameters are given. According to the updated estimate, the modern ...
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(1989)Much of the Lok crystalline spur of the Transcaucasus median block consists of Paleozoic granite. These metamorphic rocks constitute mainly the western periphery of the spur, along the right-bank tributaries of the Moshevani ...
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(2002)New data on different organic remains and biostratigraphy of the Paleocene-lowermost Eocene type section in the Indol structural-facies zone of the Indol-Kuban' depression of the Eastern Crimea are discussed. The section ...
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(1996)Based on new original paleofloral and stratigraphic data, collected recently from Jurassic sections in southern Kazakhstan, and on a critical revision of available collections and published data on Jurassic continental ...
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(2002)Procolophons from the Upper Permian of Eastern Europe are revised. The genus Microphon Ivachnenko, 1983 established on the basis of a maxilla from the Donguz 6 locality and earlier referred to procolophonids (Procolophonidae) ...
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(2001)New materials on the psammosteid heterostracan Pycnosteus palaeformis Preobr. characteristic of the Aruküla deposits (Middle Devonian, Eifelian) of the Main Devonian Field are presented. A pentagonal rounded, slightly ...
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(2002)Pyrochlore- and perovskite-group minerals are relatively common accessory constituents of agpaitic murmanite lujavrites at the Lovozero alkaline complex (Russia). These rocks contain euhedral crystals of niobian calcian ...
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(1987)The aim of work done on the 9th cruise of the R/V Akademik Mstislav Keldysh over the Magellan Seamounts in the central part of the East Mariana Basin was to determine the origin of guyots (tablemounts). For this purpose, ...
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(1989)During an exhaustive investigation of mica from rare-metal deposits, the authors made a detailed study of the rubidium variety of the lepidolite from East Siberian granitic pegmatite that has a lithium-cesium-tantalum ...
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(2004)Silicified microfossils found in the Satka Formation of the Burzyan Group (Lower Riphean stratotype of the southern Urals) are described. The research carried out augments the database on taxonomic composition of relevant ...
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(1989)Numerous investigations of natural and synthetic stannite have led to the conclusion that there are five modifications of this mineral. Two are cubic, a low-temperature modification stable at up to 565° C, and a high-temperature, ...
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(1989)Existing theories on the geologic structure of Khan Tengri, a massif that is extremely difficult to reach and has the largest glaciers (North and South Inyl'chek) and highest peaks in the Tien Shan, are based on data ...
Now showing items 7841-7860 of 21936