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S. Yu. Kolodyazhny 《Geotectonics》2010,44(2):139-157
The Mid-Russian Dislocation Zone is a large within-plate structural element of the East European Platform, which extends for more than 1100 km from the Timan Foredeep to the Orsha Basin. This deep, long-lived zone was formed against a background of changeable geodynamic settings, including (1) Late Paleoproterozoic collision events, (2) Late Riphean-Early Vendian epicontinental rifting, (3) Late Vendian-Early Triassic intraplatform tectogenesis with formation of horst-like uplifts within the zone against the background of general subsidence, and (4) Mesozoic-Cenozoic within-plate reactivation. At the final Kimmerian-Alpine stage of its evolution, the Mid-Russian Zone developed as a left-lateral transpressional structure with penetrative dissipative shear deformation resulting in the general horizontal transfer of Phanerozoic sedimentary rocks. The dislocations were manifested as two dynamically conjugate structural forms: a zone of scattered shearing and a bedding-plane tectonic flow. The dynamic manifestation of the Mid-Russian and the conjugate Belomorian-Dvina zones, which make up a common arcuate structure (in plan view), allowed us to outline the Dvina-Sukhona plate-flow with horizontal mass transfer in the southeastern direction. The tectonics of the Mid-Russian Dislocation Zone is considered in this paper with particular emphasis on the structural and kinematic assemblies in sedimentary rocks of the Phanerozoic cover. 相似文献
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Kulikov V. A. Ionicheva A. P. Kolodyazhny S. Yu. Sokolova E. Yu. Pushkarev P. Yu. Yakovlev A. G. 《Izvestiya Physics of the Solid Earth》2022,58(5):642-654
Izvestiya, Physics of the Solid Earth - Abstract—The paper presents results of magnetotelluric sounding performed in the South-Eastern Ladoga Region in 2018–2021 for the purpose of... 相似文献
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Through, long-lived structural-kinematic parageneses were established in the southeastern marginal part of the Baltic Shield on the basis of structural studies. These parageneses were formed and periodically rejuvenated from at least the Paleoproterozoic until the neotectonic stage of the evolution of this territory. A series of consecutive tectonic events related to the vertical and horizontal mobility of rocks of the crystalline basement and sedimentary cover had important implications for the formation of present-day structure of the southeastern margin of the Baltic Shield. These tectonic displacements developed for an extremely long time with retention of the main kinematic tendencies. At the end of the Paleoproterozoic, the volcanic and sedimentary rocks of the Vetreny Belt underwent tectonic stacking as a result of the countermotion of the crystalline masses of the Vodlozero Massif and the Belomorian-Lapland Belt. The clockwise rotation and lateral displacement of the Vodlozero Massif to the northeast provided the left-lateral transpression of the Vetreny Belt. Under these conditions, the Paleoproterozoic sequences experienced squeezing in the southeastern direction. This kinematic tendency was retained at the subsequent evolutional stages and eventually was recorded in the structure of the present-day boundary between the Baltic Shield and the Russian Platform. 相似文献
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S. Yu. Kolodyazhny 《Geotectonics》2007,41(3):210-230
A model of the evolution of the central Belomorian-Lapland Granulite-Gneiss Belt is proposed on the basis of analysis of the Paleoproterozoic structural-kinematic assemblages. It is shown that this tectonic zone is a long-lived mobile structural unit that evolved through several stages of tectonic transformation and metamorphism of rocks, including (1) the Reboly stage, which comprises subduction (2.88–2.82 Ga) and collision (2.74–2.53 Ga) substages; (2) the Selet stage of rifting and extension of the continental crust according to the model of simple shear (2.45–2.35 Ga); and (3) the Svecofennian stage, characterized by collision and general transpression (1.94–1.75 Ga). The results of structural-kinematic study indicate that tectonic flow in the Svecofennian time was nonuniform and related to the formation of the Kolvitsa-Umba near-horizontal protrusion. The propagation of this protrusion was caused by transpressional extrusion of plastic lower-crustal masses to the surface as a gently ascending tectonic flow directed to the northwest (in present-day coordinates). Thereby, a thrust-normal-fault kinematic effect was expressed in pushing-out of deep-seated complexes contemporaneously with tectonic erosion of the upper portions of the sequence owing to the development of lowangle normal faults. 相似文献
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S. G. Skolotnev S. Yu. Kolodyazhny N. V. Tsukanov N. P. Chamov S. Yu. Sokolov 《Geotectonics》2009,43(1):51-66
Acoustic profiling carried out with an Edgetech 3300 prophilograph in the junction zone of the Cape Verde Rise, Cape Verde Abyssal Plain, and Grimaldi and Bathymetrists seamounts in the Central Atlantic during Cruise 23 of the R/V Akademik Nikolaj Strakhov allowed us to obtain new data on neotectonic deformations in the ocean and to propose their interpretation. It has been established that neotectonic movements occurred in the discrete manner: blocks of undeformed rocks alternate with linear zones of intense deformation spatially related to paleotransform fracture zones, where anticlines, horsts, diapir-like morphostructures, and grabens were formed. The Cape Verde Ridge is a large horst. Its sedimentary cover is disturbed by thrust (?), reverse, and normal faults, steeply dipping fracture zones, and folds. Three stages of tectonic movements—Oligocene-early Miocene, pre-Quaternary, and Holocene—are recognized. The tectonic deformations occurred largely under near-meridional compression. Extension setting was characteristic of the Cape Verde Ridge and the Carter Rise in the Holocene. 相似文献
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Geotectonics - The article considers the features of the tectonics of the Central Russian deformation belt located in the central part of the East European Platform. The belt is traced in a wide... 相似文献
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The components of deformation related to endogenic (tectonic) and exogenic (glaciotectonic, gravitational sliding) factors are considered in the sedimentary platform cover by a study of Andoma dislocations in the Upper Devonian sedimentary rocks of the Lake Onega district. These structures are localized in the eponymous segment of the southeastern margin of the Fennoscandian (Baltic) Shield; indications of high tectonic activity are noted along this margin. As has been shown by a structural study, the development of the Andoma structure is caused by long-term (Late Devonian–Quaternary) multistage deformations related to tectonic factors and, to a lesser degree, glaciotectonics. The consecutive stages of synsedimentation normal faulting and landsliding, bedding-plane gliding, various forms of shear flow in a regime of transpression, glaciotectonic thrusting, and neotectonic transpression are recognized in the deformation history. 相似文献
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Kolodyazhny S. Yu. Terekhov E. N. Baluev A. S. Poleshchuk A. V. Zykov D. S. 《Geotectonics》2020,54(1):1-18
Geotectonics - The general tectonic features of the Baltic-Mezen zone developed along the border of the Fennoscandian shield and the Russian Plate in the north of the East European platform, are... 相似文献
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Geotectonics - The tectonic features of the Baltic–Mezen shear zone that developed along the border of the Fennoscandian Shield and the Russian Plate in the north of the East European... 相似文献
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