About some peculiarities of volcanism of the central part of the Siberian platform and regularities of spatial distribution of Iceland spar deposits
Abstract
A set of magmatic formations associated with the Upper Paleozoic-Lower Mesozoic magmatic cycle, similar in geologic position, as well as in mineralogical and chemical composition, researchers refer to the Siberian Traps. This formation includes intrusive and effusive rocks of basic composition, pyroclastic formations of tuffogenic strata of the Angarsk series (Tunguska Formation), which were formed due to products of early phases of volcanic activity. These rocks within the northern and central parts of the Siberian Platform occupy a vast territory. For example, tuffogenic deposits of the late Paleozoic and early Mesozoic, as well as lava covers overlying them, are located in the basins of the Nizhnyaya Tunguska and Podkamennaya Tunguska, Kureika, Khatanga, upper and middle reaches of the Kotuy, Kheta and upper Olenek rivers. The area occupied by them is at least 700,000 km². At present, magmatic formations of this territory attract great attention of researchers in connection with the development of such important issues as stratigraphy and tectonics of volcanogenic formations and processes of volcanism. The study of these issues will help to reveal the industrial prospects of this vast territory.
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References
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