Geology and tectonic evolution of Kazakhstan Paleozoides

Самыгин, С. Г.; Хераскова, Т. Н.

doi:10.24930/1681-9004-2019-19-3-347-371

Cited by 6 publications

(5 citation statements)

References 14 publications

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“…Они состоят из фрагментов протерозойской континентальной коры и неопротерозойско-палеозойских субдукционно-аккреционных комплексов, зачастую перекрытых мезозойскими осадочными образованиями (рис. 1) [Wang, 1985;Zonenshain et al, 1990;Mossakovsky et al, 1993;Şengör et al, 1993;Didenko et al, 1994;Daukeev et al, 2002b;Windley et al, 2002Windley et al, , 2007Dobretsov, 2003;Dobretsov, Buslov, 2007;Xiao et al, 2009Xiao et al, , 2013Ryazantsev et al, 2009;Bian et al, 2010;Korobkin, Buslov, 2011;Xiao, Santosh, 2014;Buslov, Cai, 2017;Gladkochub et al, 2019;Samygin, Kheraskova, 2019;Brunet et al, 2020;Sklyarov et al, 2020].…”

Section: Introductionunclassified

Late Paleozoic – Mesozoic Tectonic Evolution and Prospects of Hydrocarbon Exploration in the Alakol Sedimentary Basin (Kazakhstan)

Korobkin,

Chaklikov,

Ismailov

et al. 2023

Geodin. tektonofiz.

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Based on the analysis of stratigraphic, lithofacies, and geological and geophysical data, consideration is being given to the main stages in the formation of the basement and cover structures of the Alakol sedimentary basin. For this region, there was developed the substantiation of a scheme of tectonic zoning and there were proposed structural characteristics of faults and lithofacies features of the section. Evidence was found of a complex, multi-stage tectonic evolution. There were discovered potentially promising stratigraphic oil and gas complexes of the Late Paleozoic and Mesozoic. The deep-seated structure of the region is illustrated by a geological and geophysical section, spatially coincident with the "Turkestan" seismic profile. Based on the lithological and paleogeographic reconstructions, there were identified four major tectonic boundaries: Cambrian-Ordovician, Devonian-Carboniferous, Permian-Early Triassic, and Middle Triassic-Cretaceous. The correlation of the stratigraphic range of the hydrocarbon potential of the Alakol basin has been carried out. The criteria for forecasting hydrocarbon accumulations were substantiated.

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Section: Introductionunclassified

Late Paleozoic – Mesozoic Tectonic Evolution and Prospects of Hydrocarbon Exploration in the Alakol Sedimentary Basin (Kazakhstan)

Korobkin,

Chaklikov,

Ismailov

et al. 2023

Geodin. tektonofiz.

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“…Here, in relatively large areas, ancient Early Pre cambrian crystalline schists are outcropped, as well as sedimen taryeffusive formations metamorphosed in the greenschist fa cies of the late Early Precambrian time. Late Precambrian ma rine sedimentary and sedimentaryvolcanogenic deposits are of considerable thickness and are typically rifted [5,6].…”

mentioning

confidence: 99%

“…The DzungarBalkhash Hercynian folded system fits smoothly into the Caledonian structural plan (Fig. 1) and combines about two dozen dislocated structuralformation zones and several large depressions, listed above, overlain by MesozoicCenozoic sediments [3,6].…”

mentioning

confidence: 99%

“…The first type of the section is found in relatively stable blocks and is represented mainly by sedimentary depos its with a subordinate role of volcanogenic ones. The second type is characteristic of anticlines, where the Lower Paleozoic section of structuralformation zones (ItmuryndyTyulkulam skiy and Tekturmas) is characterized by predominantly volca nic and sedimentaryvolcanic composition and intense dislo cations [3,6].…”

mentioning

confidence: 99%

“…During the whole preMesozo ic history, it did not undergo significant inversion uplifts, which probably resulted in a limited scale of granitoid magma tism distribution. ZhivetianFrancian deposits are everywhere represented by substantially terrigenous, gray or variegated strata, containing a certain amount of carbonate and coarse gravelite material, and in the Tokrau brachysynclinorium, even ground effusives of this time are known [6].…”

mentioning

confidence: 99%

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Tectonics and gravity field structure of Central Kazakhstan

Abetov,

Uzbekov

2023

Nauk. visn. nat. hirn. univ.

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Purpose. Identification of the nature of the manifestation of tectonic elements of different ages in Central Kazakhstan in gravitational fields based on the results of the calculation of regional, intra-crustal and local transformants. Methodology. Synthesis and analysis of the data on integrated interpretation and modeling of gravitational, geomagnetic, geothermal fields, the latest movements of the Earth’s crust and parameters of the seismic regime, tectonics and stratigraphy of rocks. Findings. Regional, intra-crustal and local heterogeneities in the lithosphere manifest themselves differently in blocks of Precambrian rocks, Early and Late Caledonides, Early and Late Hercynides. They may be associated with the processes of Paleozoic intracontinental rifting, with the rise of mantle matter and its emplacement into the Earth’s crust, followed by the manifestation of Late Paleozoic orogenesis, doubling of the thickness of the Earth’s crust, outpourings of magmatic formations. Originality. It is established that large gravitational minima are distinguished in areas with Hercynian folding, characterized by abnormally high amplitudes in the movement of the Earth’s crust. In the regions of the Caledonian folding, the values of gravity field anomalies of intermediate intensity and increased amplitudes of the latest movements of the Earth’s crust are manifested. Areas with Pre-Paleozoic folding have relative maxima of gravitational anomalies and minimum values of the latest movements of the Earth’s crust. Earthquake sources are concentrated in the consolidated crust at the junction of areas with different ages of basement consolidation, in gradient zones of geothermal, geomagnetic and gravitational anomalies. According to the variations of the intra-crustal transformant, it was found that a wide range of changes in the values of the gravitational field corresponds to areas with minimal temperature values, whereas in areas with increased temperature values, the range of changes in the values of gravity anomalies is reduced. The distribution of the local transformant of the gravitational field indicates the existence of highly variable anomalies, which reflects the high-frequency gravitational effect of near-surface objects of the Earth’s crust. Practical value. The distribution of inhomogeneities in the lithosphere with various density, geomagnetic and geothermal anomalies of geophysical fields, the nature of the seismic regime and the latest movements of the Earth’s crust predetermined the formation of geostructures with different types of mineralization, each of which is recommended to be searched and explored by a specific rational set of geophysical methods.

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Junction zone structure of the Sarmatia, Volga-Uralia, and Fennoscandia microcontinents as part of the East European Platform basement

Kheraskova,

Volozh,

Antipov

et al. 2023

Lithosphere

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Research subject. The structure of the pre-Paleozoic deposits and different-age Precambrian basement of the East European platform based on geological and geophysical data.Aim. To trace the evolution of the area under study and to study the geodynamics of processes in order to reconstruct the paleostructure of the Baltica continent.Materials and methods. The current state of the consolidated crust was studied using a geological interpretation of seismic profiling data (transects: “EB-1”, “Tatseys”, “Magnit”) and materials of gravity and geomagnetic surveys. The material composition of the basement rock complexes was studied based on drilling data.Results. The Baltica continent forms the basement of the modern East European Platform. After the Sveconorwegian folding about 1000 Ma, Baltica had become part of the Rodinia supercontinent and merged with the North American platform. A passive continental margin with the Riphean-Vendian sedimentary cover was formed on the eastern Baltica edge. The Petrozavodsk-Khopersky orogen, which arose in the place of the Karelian (Early Proterozoic) Petrozavodsk-Khopersky paleoocean, was reconstructed. The submeridional suture was a result of this paleoocean closure. The orogen structure, as well as that of the paleocontinent Baltica, was disturbed and partially destroyed by subsequent tectonic processes, which continue at the present time with modern rifting.Conclusions. The closure of the Petrozavodsko-Khopersky paleoocean led to the formation of the Baltica continent, which included three microcontinents – Sarmatia, Fennoscandia and Volga- Uralia. Baltica became part of the Rodinia supercontinent during the Sveconorwegian orogeny. Volga-Uralia was located on the border with the PaleoPacific and had a Late Riphean sedimentary cover of the Rodinia supercontinent. This margin underwent destruction during a collision with the Timanides. The scale and extent of the reconstructed Petrozavodsk-Khopersky orogen is comparable to Paleozoic orogenic belts, such as Cadomides, Caledonides, Variscides, or Timanides.

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Geology and tectonic evolution of Kazakhstan Paleozoides

Cited by 6 publications

References 14 publications

Late Paleozoic – Mesozoic Tectonic Evolution and Prospects of Hydrocarbon Exploration in the Alakol Sedimentary Basin (Kazakhstan)

Late Paleozoic – Mesozoic Tectonic Evolution and Prospects of Hydrocarbon Exploration in the Alakol Sedimentary Basin (Kazakhstan)

Tectonics and gravity field structure of Central Kazakhstan

Junction zone structure of the Sarmatia, Volga-Uralia, and Fennoscandia microcontinents as part of the East European Platform basement

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