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Browsing ELibrary by Title
Now showing items 7821-7840 of 21936
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(2004)It can be assumed that orebearing volcanosedimentary sequences of Rudnyi Altai began to form since the Emsian at the transition from the axial rift of the Ob-Zaisan ocean spreading to the continental rift of the Altai-Mongol ...
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(2000)A new, 14C-verified borehole stratigraphy provides the first age-controlled reconstruction of the late Quaternary glacial history of the Pechora Sea (southeasternmost Barents Sea). A complete glaciation of the Pechora Sea ...
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(2004)The behavior of dissolved Hf in the marine environment is not well understood due to the lack of direct seawater measurements of Hf isotopes and the limited number of Hf isotope time-series obtained from ferromanganese ...
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(2003)Carbon and oxygen isotope data from a succession of Cretaceous (Barremian-Cenomanian) age recovered from the Pacific Ocean (DSDP site 463) are presented. The carbon isotope curve reveals a large isotope excursion within ...
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(1990)A new copper-ore show was found within the Devonian clastic series in the southeast of Haakon VII Land, on Mt. Sigurd, near the tectonic contact with the Upper Proterozoic metamorphic rocks of the Hekla Hook complex. The ...
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(2001)Traditional Crucibles for noble gas extraction made of refractory metals are not suitable for metallic samples because these are easily alloyed with liquid metals. To obtain elemental and isotopic compositions of noble ...
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(2002)The crystal structure of burnsite, KCdCu7O2(SeO3)(2)Cl-9, a new mineral species from fumaroles of the Tolbachik volcano, Kamchatka, Russia, has been solved by direct methods and refined on the basis of F-2 for all unique ...
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(1996)The paper present descriptions of the sections of the Saumalkol' Formation situated in the Northern part of the Karasor synclinorium in Central Kazakhstan. Particular attention was devoted to finds of fauna and flora and ...
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(1990)There is little information about pre-Late Paleozoic volcanism in Siberia because the corresponding volcanic systems were largely eroded during the Mesozoic. However, by studying the few volcanic bodies now known and ...
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(2001)A thorough revision of the lectostratotype of the Volgian Stage near the Gorodishche Village (Ul'yanovsk region) and neighboring section of the upper Kimmeridgian-lower Volgian (Dubki Village) revealed the radiolarian ...
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(2003)Three possible scenarios can be proposed for generation of boninite melts in a suprasubduction zone of eastern Kamchatka: (1) plume model [11] that explains specific conditions of boninite petrogenesis under the influence ...
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(1998)A section of Cenomanian-Santonian deposits in the Transaltai Gobi (southwestern Mongolia) is described and analyzed. In lithological features and composition of ostracode, mollusk, and charophyte assemblages these deposits ...
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(1998)The described flora is studied near the village of Malomikhailovka, where it is confined to synonymous formation of an intermontane depression at the northern end of the Sikhote Alin volcanic belt. In its dominant taxa and ...
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(2004)New and previously unpublished finds of pterosaurian bones are described from the Cretaceous of Russia, Kazakhstan, and Kyrgyzstan. The following taxa are determined: Pterodactyloidea indet. (distal fragment of femur; ...
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NEW DATA ON CRUSTAL STRUCTURE AT DEPTH UNDER THE CENTRAL PART OF THE KURILE-KAMCHATKA ISLAND SYSTEM (1988)In 1983 and 1984 we ran deep seismic sounding and correlation-refraction shooting surveys in the central part of the Kurile-Kamchatka island system, which allowed us for the first time to directly determine the crustal ...
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(2001)The effect of trapping a trace element, i.e., increasing element partitioning to the solid phase due to interaction of its atoms with crystal lattice defects, is an important phenomenon in trace-element behavior in geochemical ...
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(2004)Orthorhombic diarsenides of Fe, Co, and Ni of the löllingite group (löllingite FeAs2, safflorite CoAs2, and rammelsbergite NiAs2) are typical of deposits of the five-element (Co, Ni, Bi, Ag, and U) association and similar ...
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(1998)Assemblages of spores, pollen, and organic-walled phytoplankton were studied in the Middle Eocene-Oligocene sequence of Severnye Ergeni. The dinocyst zonal assemblages were described, and anomalies in their composition ...
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(2003)A section of lower and middle Norian deposits in the Tikhaya River lower courses of (the central part of Kotel’nyi Island, New Siberian Islands) is described. After revision, the taxonomic composition of fauna from the ...
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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 ...
Now showing items 7821-7840 of 21936