Results 1 to 10 of about 2,685 (149)
CRUSTAL CARBONATITES: DEFINITION, GEOLOGY, MINERALOGY, AND GEOCHEMISTRY
Геодинамика и тектонофизикаThis is a synopsis of the available data on crustal carbonatites, including their temporal and spatial distribution, mineralogy, geochemistry, and stable isotope (δ18O and δ13C) patterns.
E. V. Sklyarov, A. V. Lavrenchuk
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Геодинамика и тектонофизика, 2018 The TerraneChrone® (LA-ICP-MS) technique has been applied to carry out an integrated study of detrital zircons in sandstones sampled from the basal horizons of the stratotypical Riphean sequence in the Southern Urals, specifically the Navysh and Chudin ...
T. V. Romanyuk +4 more
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Известия Томского политехнического университета: Инжиниринг георесурсов, 2020 The relevance of the research consists in detailed mineralogical studies with a focus on electron probe microanalysis provide information on the composition of ores and the form of occurrence of noble metals (platinum groups), rare and rare earth ...
Vladimir G. Stepanets +5 more
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To the problem of origin of the Bug series rocks
Геофизический журнал, 2019 The age of the Bug series rocks is an object for discussion. Isotopic methods do not give a distinct answer, because in the same outcrop, the same sample and even in the same crystal of zircon several dates of formation are to be found with evident ...
O. V. Usenko
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Does a carbonatite deposit influence its surrounding ecosystem?
FACETS, 2019 Carbonatites are unusual alkaline rocks with diverse compositions. Although previous work has characterized the effects these rocks have on soils and plants, little is known about their impacts on local ecosystems.
James M.C. Jones +5 more
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Problems of search and diagnosis of carbonatites on the territory of Ukraine
Вісник Харківського національного університету імені В.Н. Каразіна. Серія Геологія. Географія. ЕкологіяReliably established carbonatites on the territory of Ukraine have characteristics inherent in this class of rocks, in particular, they are enriched with a fairly wide range of rare chemical elements, the most characteristic are rare earth elements and ...
Василь Загнітко
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DISTRIBUTION OF TRACE ELEMENTS IN PEROVSKITE FROM SKARNS AND CALCITE VEINS OF THE CHERNAYA RECHKA AND NAZYAM RIDGES (SOUTH URALS) [PDF]
Минералогия, 2017 Trace element distribution and crystal morphology of perovskite from garnet-vesuvianite skarn of the Akhmatovskaya mine and chlorite-perovskite-calcite veins of the Perovskitovaya mine (South Urals) were studied using LA-ICP-MS.
S.Yu. Stepanov +3 more
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Ediacara Obscura: Unveiling Hidden Magnetisations in the Fen Complex, Southern Norway
Geochemistry, Geophysics, GeosystemsPaleomagnetic directions found in Ediacaran (635–539 Ma) rocks are widely dispersed, which has led to conflicting hypotheses about tectonic regimes and geomagnetic field behavior during this period, and raised doubts about the fidelity of the ...
Justin A. D. Tonti‐Filippini +8 more
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MICA COMPOSITION REFLECTING CONDITIONS OF AILLIKITE FORMATION IN ZIMA COMPLEX OF EASTERN SIBERIA
Геодинамика и тектонофизикаFour types of mica were identified in the macrocryst and fine porphyry aillikites from the Yarma zone of the Urik-Ija graben considering specific features of morphology, chemical composition, zonation and crystallization conditions.
V. B. Savelyeva +4 more
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Plumes - a new word in Geology of the Urals
Литосфера, 2018 Subject. The ideas of plume tectonics became active and developing only several years later than the theory of plate tectonics. But in the Urals, the question of plume tectonics, contrary to plate tectonics, was not raised, with rare exceptions, until ...
Victor N Puchkov
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