Abstract
Research subject. This article is devoted to the formation features of the Ural-Timan-Paleo-Asian segment of Eurasia. Materials and methods. The research was based on the authors’ data and those obtained following a review of available publications on the geology of segmentation. The Timan region was investigated using the geological information obtained by V.G. Olovyanishnikov.Results. A geodynamic map of the Ural-Timan-Paleo-Asian segment with a scale of 1 : 2 500 000 was compiled, which allowed further research into the structure and formation of the north-western part of the Eurasian area. This part was found to be mostly composed of geodynamic associations of orogens, orogenic systems and orogenic belts of the Upper Proterozoic (Riphean) and Paleozoic time intervals, as well as by elements of the Mesozoic-Cenozoic neoplate. These processes were supplemented by the formation of tectonic systems of superimposed depressions and protoplate protrusions. The formation of orogens, orogenic systems and orogenic belts is associated with the development and subsequent transformation of paleooceanic basins under the conditions of accretion and collision. The terranes of the ancient continental crust also participated in the formation of the segment’s geodynamic elements, for which a typification scheme was proposed. The articles present new data on the formation conditions of the segment’s orogenic elements and the relationship of the orogeny with global reconstructions, including the problem of closing the surrounding oceanic space.
Highlights
The research was based on the authors’ data and those obtained following a review of available publications on the geology of segmentation
A geodynamic map of the Ural-Timan-Paleo-Asian segment with a scale of 1 : 2 500 000 was compiled, which allowed further research into the structure and formation of the north-western part of the Eurasian area. This part was found to be mostly composed of geodynamic associations of orogens, orogenic systems and orogenic belts of the Upper Proterozoic (Riphean) and Paleozoic time intervals, as well as by elements of the Mesozoic-Cenozoic neoplate
East-Uralian accretional-block segment: V27 – Dzhusa, V28 – Kiembaevo, V29 – Kartaly, V30 – Emanzhelinsk, V31 – Shevchenko-Dzhetygara and V32 – Akkermanovo-Svetloye mutli-cover zones of oceanic and island-arc associations, V33 – Adamovka, V34 – Mugodzhary, V35 – Taldyk, V36 – Tastybutak, V37 – Mariinsk, V38 – Kachkar terrains of Precambrian continental crust with interterrain massifs of granite plutons; V39 – Dzhabyk-Suunduk and V40 – Kachkar zones of Precambrian terrains of continental crust and interterrain granite plutons overlapped by Paleozoic cover, V41 – Kairakty syncolissional interterrain volcano-intrusive belt, V42 – Karabutak and V43 – Tastybutak interterrain accretion-collisional sutures
Summary
Formation features and a geodynamic map of the Ural-Timan-Paleo-Asian segment of Eurasia. A geodynamic map of the Ural-Timan-Paleo-Asian segment with a scale of 1 : 2 500 000 was compiled, which allowed further research into the structure and formation of the north-western part of the Eurasian area. This part was found to be mostly composed of geodynamic associations of orogens, orogenic systems and orogenic belts of the Upper Proterozoic (Riphean) and Paleozoic time intervals, as well as by elements of the Mesozoic-Cenozoic neoplate. For citation: Koroteev V.A., Necheukhin V.M., Dushin V.A., Volchek E.N.
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