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1.
N. K. Andreeva N. A. Kagramanyan T. N. Kheraskova 《Lithology and Mineral Resources》2000,35(4):373-389
New data on the stratigraphy and composition of the Devonian rocks of the Moscow Syneclise were used. Facies-paleogeographic
schemes were compiled for the Lochkovian, Eifelian, Givetian, early-middle Frasnian, late Frasnian, and early-late Famennian
evolutionary stages of the Moscow Syneclise. Seven sedimentation cycles were developed due to sealevel fluctuations and structural
rearrangements in the paleooceanic basins surrounding the East European Platform at that time. The inference was made on the
structural heterogeneity of the platform basement and on differentiated movements as well as on the strike-slip fault nature
of some fragments of the basement relative to each other in the Devonian. 相似文献
2.
A new concept concerning the structure and stages of evolution of the Kas Block of the West Siberian Plate is stated in this paper. The Kas Block is traditionally considered to be a subsided western margin of the Siberian Platform. The new concept is based on the results of the interpretation of the geophysical data recently obtained along the reference and regional profiles in this territory. The geological interpretation of the deep dynamic sections obtained by reprocessing of the CDP seismic reflection records has been performed for the first time. The structural features of the Kas Block, as well as the character of its junction with the Siberian Platform and the Paleozoic framework, are discussed. The tectonic scheme of the territory and the scheme of the pre-Late Devonian surface of the Kas Block have been compiled. The Baikalian age of the basement of the Kas Block is substantiated. The Salairian allochthonous ophiolite-basalt tectonic nappe is localized for the first time within the sedimentary cover of the Kas Block. The available information allowed us to reconstruct the development of the western margin of the Siberian continent in the Riphean and Early Paleozoic before and after the Baikalian Orogeny, respectively. The informational background of the geological and geophysical interpretation involves the results of the CDP seismic reflection profiling, including the deep dynamic seismic sections and parameters of the P-wave velocities along the reference 1-SB seismic line and the regional Vostok 10, 12, 15, and 16 seismic lines; the results of the deep seismic and magnetotelluric soundings; the gravity measurements; the magnetic exploration; and the new coherent physical geological models. 相似文献
3.
The results of geological interpretation of large fragments of seismic transects SB-1 (Batolit), SB-2, and SB-3 (Altai-Severnaya Zemlya), which cross the western and southern margins of the Siberian Platform and its fold framework, specify substantially the structure and geological history of the sedimentary cover. The most important data have been obtained for the structure of the Baikit Anteclise, the Angara-Lena Terrace, and the Kas Block of the West Siberian Plate. The geological interpretation of the recorded wavefield specifies substantially the genetic features of these structural elements and their mutual relationships, allowing a reliable reconstruction of the western, and partially the southwestern, margins of the Siberian Platform in the Riphean-Early Paleozoic before and after the Baikalian Orogeny. 相似文献
4.
5.
Kheraskova T. N. Volozh Yu. A. Antipov M. P. Bykadorov V. A. Postnikova I. S. 《Geotectonics》2020,54(5):628-651
Geotectonics - The geological and sedimentological interpretation of several time and deep seismic profiles within junction zone of the Volga‒Ural area of the East European Platform,... 相似文献
6.
The main stages of the evolution of newly formed structural elements are considered against the background of breakup of the
epi-Grenville Rodinia supercontinent, which started about 950 Ma ago. The paleomagnetic data on pathways of the traveling
of Rodinia’s fragments are analyzed and evidence for their geology, magmatism, and sedimentation are integrated with special
emphasis on the evolution of the continental margins. A series of paleotectonic maps with elements of paleogeography for time
intervals of 950–900, 850–800, 750–700, 650–630, and 570–550 Ma ago has been compiled on the basis of palinspastic reconstructions
with allowance for new paleomagnetic data primarily concerning the position of Siberia in the Late Precambrian. Objects all
over the world, not only in Russia, are involved in the analysis, though with less thoroughly described paleogeography. The
structural elements of the Paleoasian ocean are included into the system of global paleooceans and framing paleocontinents.
The history of the Paleoasian ocean is traced through 400 Ma from the breakup of the Rodinia supercontinent to the origin
of the new Paleogondwana supercontinent about 550 Ma ago. 相似文献
7.
Lower Ordovician sequences of the Ebeta antiform, a southern extension of the Uraltau zone, were deposited at the conjugation of paleocontinental and paleoceanic sectors of the southern Urals. Four types of sections were formed on opposite sides of cordillera that existed at the margin of the East European paleocontinent on the Preordovician volcanic belt. Sections of the first three types made up the western apron on the uplift that served as a provenance. Lateral and vertical relationships of various sedimentary associations, as well as their variable (in space and time) facies patterns and sedimentation conditions are considered. An important role of redeposition, slumping, and faulting in the apron development has been revealed. The apron fringed the eastern wall of the Sakmara marginal riftogenic basin that arose at the Cambrian-Ordovician boundary. On another side of the marginal uplift in the east, a slightly modified perioceanic environment existed in the Early Ordovician. Sections of another type formed here at the periphery of Uralian paleocean. These sections are characterized by the universal occurrence of ophiolithoclastic olistostrome with fragments of an older oceanic crust.__________Translated from Litologiya i Poleznye Iskopaemye, No. 3, 2005, pp. 292–306.Original Russian Text Copyright © 2005 by Samygin, Kheraskova. 相似文献
8.
T. N. Kheraskova N. K. Andreeva A. K. Vorontsov A. Kagramanyan 《Lithology and Mineral Resources》2005,40(2):150-166
Materials on the structure, composition, and facies features of Lower Paleozoic sediments in the Moscow Syneclise are discussed. Structural-facies maps have been compiled for several stratigraphic levels of the Cambrian and Ordovician. Based on these materials, evolution of the sedimentary basin of the Moscow Syneclise (hereafter, Moscow Basin) and its structure in the Early Paleozoic is traced. The Moscow Basin is divided into four segments that differ in the geological history, subsidence amplitude, and strike of main structures.Translated from Litologiya i Poleznye Iskopaemye, No. 2, 2005, pp. 172–191.Original Russian Text Copyright © 2005 by Kheraskova, Andreeva, Vorontsov, Kagramanyan. 相似文献
9.
Kheraskova T. N. Volozh Yu. A. Vorontsov A. K. Pevzner L. A. Sychkin N. I. 《Lithology and Mineral Resources》2002,37(1):68-81
Recent lithological and geophysical studies of Riphean and Lower Vendian sedimentary rocks in the Kresttsy and Mid-Russian (Soligalich) aulacogens resulted in the recognition of four stages in the evolution of the East European Platform in the Late Proterozoic: (1) late Early Proterozoic–Early Riphean stage (formation of the protoplatform cover); (2) Middle Riphean stage (rifting only at platform margins); (3) late Middle Riphean–initial late Riphean stage (formation of the paleoplatform cover related to the existence of the epi-Grenville Rodinia supercontinent, which united all continents of the Earth at that time); (4) latest Riphean–early Vendian stage (rifting and origination of the Central Russian aulacogen system during the breakup of Rodinia and Cadomian orogeny. 相似文献
10.
The available geological data on the Meso-and Neoproterozoic rocks in the north of the East European Platform are considered, involving the results of a comprehensive study along regional seismic profile I-I that extends for 460 km and crosses the main structural units of the Mezen Syneclise from SW to NE. Many previously unknown structural features of aulacogens filled with thick (up to 4–8 km) sequences of the Meso-and Neoproterozoic sedimentary rocks that make up the preplate complex are demonstrated in this profile. The Riphean rocks are subdivided into three seismostratigraphic sequences: the lower part of the Lower Riphean, the Lower-Middle Riphean, and the Upper Riphean. The geodynamic events in the north of the East European Platform are correlated with those that occurred in its central part and the adjacent foldbelts. 相似文献