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11.
S.?L.?NikiforovEmail author N.?O.?Sorokhtin S.?M.?Koshel’ L.?I.?Lobkovsky 《Oceanology》2018,58(2):266-272
Analysis of the morphometric characteristics from a study of the Barents Sea seabed has shown that the existing troughs are consistent with geodynamic conclusions, allowing morphological typing into structural slopes and reconstruction of their origin. Thus, the Norwegian–Mezenskaya rift system and Svyataya Anna and Victoria troughs were formed due to stretching of the lithosphere. The South Barents and Medvezinsko- Edzinskaya depressions formed at the generation stage of lithospheric plates due to the collision of several island arcs between outliers of the ancient oceanic crust. The choice of the geomorphic method for studying the seabed is because the science of geomorphology comprehensively studies bottom relief (morphology), its origin, and age. Adequate reconstruction of the causal relationships of exogenous and endogenous processes aids in substantiating the prediction of probable catastrophic seabed events. The results of mathematical calculations have confirmed the geodynamic conclusions within the Barents Sea region. 相似文献
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Geological evolution of the tethys belt from the atlantic to the pamirs since the LIAS 总被引：3，自引：0，他引：3
J. Dercourt L.P. Zonenshain L.-E. Ricou V.G. Kazmin X. Le Pichon A.L. Knipper C. Grandjacquet I.M. Sbortshikov J. Geyssant C. Lepvrier D.H. Pechersky J. Boulin J.-C. Sibuet L.A. Savostin O. Sorokhtin M. Westphal M.L. Bazhenov J.P. Lauer B. Biju-Duval 《Tectonophysics》1986,123(1-4)
We discuss nine palinspastic geological maps (Plates 1–9), at
scale, which depict the evolution of the Tethys belt from the Pliensbachian (190 Ma) to the Tortonian (10 Ma). A Present structural map (Plate 10) is shown for comparison at the same scale with the same conventions. Our reconstructions are based on a kinematic synthesis (Savostin et al., 1986), a paleomagnetic synthesis (Westphal et al., 1986) and geological compilations and analyses concerning in particular the western domain (Ricou et al., 1986), the eastern passive margins (Kazmin et al., 1986a), the eastern active margins (Kazmin et al., 1986b), the Black Sea-Caspian Sea basins (Zonenshain and Le Pichon, 1986) and the ophiolites (Knipper et al., 1986). 相似文献
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Nikiforov S. L. Sorokhtin N. O. Dmitrevskiy N. N. Ananiev R. A. Sokolov S. Yu. Ambrosimov A. K. Meluzov A. A. Mutovkin A. D. 《Oceanology》2019,59(5):801-802
Oceanology - First results of the multidisciplinary expedition onboard the R/V Akademik Nikolaj Strakhov in the Barents Sea in August–September 2018 are presented. Hydrophysical sounding has... 相似文献
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The origin of PGEeCueNi sulfide deposits of Norilsk and Talnakh located in the northwest
flank of the Triassic basalt trap formation of Siberia is considered. It is shown that ore elements of these
deposits (probably, except Fe) are derived from the crust rather than from the mantle. They entered the
basalts owing to a remobilization (recycling) of ore elements from the Paleoproterozoic sediments and
from the rocks of the Siberian platform’s basement. Prospecting criteria for similar deposits are as
follows: (1) a presence of a large Paleoproterozoic aulacogen and a related magmatic sulfide CueNi
mineralization; (2) a confinement of perspective areas to troughs associated with long-lived deep fault
zones; (3) association with mobile orogenic belts, island-arc systems and tectonomagmatic activation
zones; (4) temporal association with boundaries of global periods characterized by active processes of
continental breakup and large-scale trap magmatism. A combination of several factors (the first one is
obligatory) is favorable for the discovery of a large ore body. 相似文献
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Sorokhtin N. O. Nikiforov S. L. Ananiev R. A. Dmitrevskiy N. N. Moroz E. A. Sukhih E. A. Kozlov N. E. Chikirev I. V. Fridenberg A. I. Koluibakin A. A. 《Oceanology》2022,62(4):540-549
Oceanology - The article deals with the issues of the geodynamic evolution of the Kara–Barents Sea shelf and influence of structure-forming processes on the nature of relief formation. The... 相似文献
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G. V. Novikov M. E. Mel’nikov L. I. Lobkovsky O. Yu. Bogdanova N. O. Sorokhtin 《Doklady Earth Sciences》2015,465(2):1233-1236
The data on the geological structure of different guyots on the Marcus-Wake rise with cobalt-bearing Fe–Mn crusts are discussed. Crusts are represented by three-layer aggregates composed of one lower phosphatized (I-1) and two upper non-phosphatized (II and III) layers. Fe-vernadite and Mn-feroxygite are the major ore minerals in all studied crusts and their layers. Small contents of vernadite, asbolane–buserite, and goethite are registered. Crusts of guyots on the rise are characterized by a stable concentration of heavy and rare metals (Cotot, Ni, Cu, Zn, Pb, Mo, and Cd) independently of their latitudinal location. 相似文献
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N. O. Sorokhtin L. I. Lobkovsky G. V. Novikov N. E. Kozlov O. Yu. Bogdanova S. L. Nikiforov 《Doklady Earth Sciences》2015,465(2):1215-1217
The regularities of the concentration of ore matter in the mid-ocean ridges are considered, and the mechanisms of hydrothermal and cumulative treatment of the crust by ore elements are substantiated. 相似文献
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Oceanology - The study of the geodynamic evolution of the Baltic Shield showed that the melts of diamondiferous kimberlites and related rocks were formed due to the pulling of “heavy”... 相似文献