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Browsing ELibrary by Title
Now showing items 9272-9291 of 24608
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NEW DATA ON GEOCHEMISTRY OF THE OLDEST (2.95-3.05 GA) ANDESITE ASSOCIATION IN EASTERN FENNOSCANDIA (2003)The paper presents results of geochemical study of the oldest (2.95–3.05 Ga) andesite association of the Chalka volcanic structure, which is a member of the Archean Vedlozero–Segozero greenstone belt located in the ...
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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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(2006)Genesis of deposits in the world's largest Witwatersrand auriferous region (South Africa) remains a debatable issue over several decades. Based on geological and mineralogical-geochemical investigations, we previously ...
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(2006)The issue of invisible gold in deposits has a great scientific and applied significance. The study of the nature and occurrence mode of gold makes it possible to elucidate ore formation conditions. The majority of large ...
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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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(2006)We present a new data on middle Jurassic - early Cretaceous coleoids family Belemnotheutidae form Russia. The palaeobiogeographic distribution of the family is summarized herein and new palaeobiogeographic data are connected ...
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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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(2006)An algorithm for researching a quantitative index of seismic activity (QISA) of faults. The index provided a ranking of the faults by degrees of their recent activity on the real time scale and enabled analyses of contributions ...
Now showing items 9272-9291 of 24608