24 research outputs found

    Some mineralogical data on genesis of magmas of the Carpathian region

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    Some mineralogical data on genesis of magmas of the Carpathian region

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    A brief characteristics of minerals of magmatic rocks is given: pyroxenes, olivine, spinel, garnet, tridymite. Composition of clinopyroxenes indicates two geodynamic regimes in Mesozoic: intraplate (continental crust destruction) and spreading one (partial break of oceanic crust). Garnet from Miocene rhyodacites crystallized within the apical part of magmatic source at high pressure. Presence of tridymite testifies to high, about 1400°С temperatures of acid melts eruption

    Relation of Alpine magmatism with structural and fault tectonics of the Carpathians

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    The Alpine activity cycle of tectonic development of the Carpathians and adjacent TransCarpathian, Pannonian, Transilvanian depressions, Dinarides (Pancardi) was accompanied by active magmatism. Its three main stages have been established: Mesozoic (Т 3-КД, Miocene, and Pliocene-Pleistocene. Thrusting process of the Low Cretaceous - Oligocene produced a folded structure of the Carpathians with numerous allochtonous bodies of Mesozoic magmatic rocks (ophiolite association). The collision stage of the region development, which came in Neogene, is related to intense volcanism of antidrome order indicating the destruction of the continental crust. Coincidence of strikes of principal fractures and the areas of volcanites development is a characteristic feature. Finally, the third phase of alkali-basaltoid volcanites of Pancardi has manifested itself in connection with intra-plate rupturing tectonics of the continents. Volcanites are of the mantle - plume genesis

    Photolysis of 2-mercaptobenzothiazole in the presence of surfactants

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    Relaxation-polarization characteristics of a cement-water system in a magnetic field

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