The structure of the Western and Central parts  of the Ukrainian schield. Controversial issues

Gintov, О.B.; Оrlyuk, М.І.; Entin, V. A.; Pashkevich, І. K.; Mychak, S. V.; Bakarzhieva, M. I.; Shimkiv, L. M.; Марченко, А. В.

doi:10.24028/gzh.0203-3100.v40i6.2018.151000

Cited by 7 publications

(4 citation statements)

References 4 publications

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“…8. Faults of the Ukrainian shield [Gintov et al, 2018] with outcrop areas of super-deep fluid tracks: 1 -contour of the exposed part of the shield; 2 -the contour of the slopes of the shield, within which the folded and discontinuous structures of the Precambrian basement can be traced according to geophysical data; 3 -plutons and large intrusive massifs of granitoids; 4 -the border between Sarmatia and Fennoscandia; 5 -fault zones: (a -inter-megablock, б -intra-megablock); 6 -numbers of fault zones; 7-11 -kinematic signs (7 -dextral strike -slip fault (a -during laying, б -during the main phase of activation); 8 -sinistral strike-slip fault (a and б -the same as in point 7); 9 -reverse strike-slip fault (a and б -the same as in point 7); 10 -normal strike-slip fault (a and б -the same as in point 7); 11 -reverse strike (a) and normal strike (б)); 12 -seam zones (numbers in squares): 1 -Golovanivska, 2 -Inguletsko-Kryvorizka, 3 -Orikhiv-Pavlogradska.…”

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Selection of areas prospective for the search of primary hydrogen in the territory of Ukraine (based on the data of the 3D P-velocity model of the mantle)

Tsvetkova,

Bugaienko,

Zaiets

2024

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The work aimed to identify promising areas for the search for primary hydrogen in Ukraine using a 3D P-velocity model of the mantle under Ukraine and its surroundings. The work uses a 3D P-velocity model of the mantle under the territory of Ukraine and its surroundings from a depth of 50 to 1700 km north of 50° NL and up to 2500 km to the south. The model is derived using ISC bulletin data from 1964 and is presented as horizontal and vertical cross-sections. Since the manifestation of hydrogen is primarily associated with the release of ultra-deep fluid tracks in the mantle, a brief analysis of them was presented. A detailed analysis of all nine superdeep mantle fluids isolated on the territory of Ukraine and their velocity characteristics was carried out. A comparison of the location of the routes of passage of superdeep fluids and the velocity structure of the mantle of the considered territory showed that they are confined to tectonically activated areas. In order to confirm the possible presence of primary hydrogen in selected tracks of superdeep mantle fluids, heat flow density maps, a temperature map at a depth of 50 km, a map of the depth of the Moho boundary, a conductivity density map, and a fault map of the Ukrainian Shield were considered. A comparative analysis of maps of the location of superdeep mantle fluids and regions on the territory of Ukraine with increased heat flow, increased depth of the Moho boundary, and the presence of mantle conductors and faults was carried out. Summarizing the results of the comparative analysis, the most promising areas for the search for primary hydrogen were selected, corresponding to the following routes of superdeep fluids: f12, the northeastern part of f3, the southern part of f4 (the area of the Dnipro-Donetsk basin), the southwestern part of f1 (the area of the Western Ukrainian oil and gas-bearing region) and f9 and f10 (region of the South Crimean oil and gas-bearing province).

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“…Fig.6. The Moho boundary of the territory of Ukraine[Gintov et al, 2018] with transported super-deep fluids.…”

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Selection of areas prospective for the search of primary hydrogen in the territory of Ukraine (based on the data of the 3D P-velocity model of the mantle)

Tsvetkova,

Bugaienko,

Zaiets

2024

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“…Перший профіль із заходу на схід перетинає Подільський і Росинський, другий -Бузький і Росинський мегаблоки УЩ. Найзахідніший пункт ZZV розташований у Немирівській ЗР, яка в цьому місці є міжмегаблоковою (Gintov et al, 2018). Загалом виміри проведено у 12 пунктах, відстань між якими становить у середньому 10-15 км, спостереження в польових точках велися від 1 до 3 діб.…”

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Interpretation of the 3d Geoelectrical Model of the Intersection Area of the Zvizdal-Zaliska and Nemyrivsk Fault Zones

Ilienko,

Burakhovich,

Kushnir

2023

VKNUGEOL

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The interpretation of the deep three-dimensional geoelectricalal model of the central part of the Zvizdal-Zaliska and Brusyliv fault zones of the Ukrainian shield, which was built with the involvement of data from experimental observations of the Earth's low-frequency electromagnetic field conducted in 2019 by the Institute of Geophysics named after S.I. Subotin of the National Academy of Sciences of Ukraine, within the Ordyntsi-Lobachiv and Zoziv-Stryzhavka profiles was done. Experimental materials were processed with the PRC_MTMV software package, tipper estimates were obtained for periods of geomagnetic variations from 50 to 3400 s and curves of apparent resistivity (amplitude values and impedance phases) from 10 to 10000 s. Based on the qualitative analysis of magnetovariational profiling parameters, magnetotelluric sounding curves and pseudo-sections, several local near-surface structures of complex orientation in space were identified, which are confined to the Pogrebyshchensky and Ogiivskyi faults, areas of separate parts of the Zvizdal-Zaliska, Brusyliv and Nemyriv fault zones, as well as their convergence , and outside the fault zones in the crystalline massive of the Ukrainian shield. The main result of the geological-geoelectrical interpretation of the 3D model is the discovery of new anomalies of low resistivity in the near-surface part of the earth's crust (from the surface to 0.5-2 km), which correspond to the structural and metallogenic features of the study area; confirmation and detailing of the anomalously heterogeneous distribution of resistivity in the tops of the upper mantle at depths from 70 to 120 km west of the Ukrainian shield. The area of intersection of the Zvizdal-Zaliska and Nemyrivs fault zones is characterized by both a galvanically connected spatially diverse system and local separate near-surface anomalies with low resistivity from 5 to 100 Ohm·m, most of which dip to 0.5-1 km. It is shown that there are connections between conductivity and structural features of the Zvizdal-Zaliska, Brusyliv and Nemyriv fault zones. In addition, some anomalies are found in the granite migmatites of the Ros' structural-formation zone, outside the tectono-metasomatic mineragenic zones. As a rule, anomalies are confined to zones of disintegration of crystalline basement rocks, elongated zones of metasomatization, and areas of distribution of graphitized rocks; moreover, some of the surface anomalies correspond to regions of weathering crusts. The conducted geological-geoelectrical analysis of the model showed that several areas require further study, namely the sub-latitude anomaly west of the Zoziv-Stryzhavka profile and the complex-shaped anomaly in the eastern part of the study area. As promising for the search for minerals, which meets the geoelectrical criteria, the area of the anomaly within the Brusyliv fault zone with a depth of up to 2 km is highlighted.

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“…The SP fault zone separates granitoids of the Zhytomyr (2.06-2.08 Ga) and Osnytsk (1.99 Ga) complexes deforming them as a sinistral strike -slip fault and uplifting the Tamoshgorod dyke (1.79 Ga) as a dextral srike -slip fault type [Gintov, 2014]. On the modern stage of investagations, SP fault zone is considered as one of the fault zones that was formed at the Nemyriv stage of faulting in the Late Paleoproterozoic, simultaneously with Goryn, Lutsk, Teteriv and Nemyriv fault zones, due to the junction of two ancient microcontinents -Fennoscandia and Sarmatia [Bogdanova et al, 1996[Bogdanova et al, , 2013Gintov, Pashkevich, 2010;Mychak, 2016;Gintov et al, 2018] (Fig. 1).…”

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Inner structure and kinematics of the Sushchany-Perga fault zone of the Ukrainian Shield according to the tectonophysical study

Mychak¹,

Farfuliak²

2021

GZh

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The field tectonophysical works were carried out in the upper reaches of the Ubort River basin along the Zolnia-Maidan-Kopischany fault. The research aim was determination of the inner structure and kinematics of the Sushchany-Perga fault zone of the western pfrt of the Ukrainian Shield. For investigation of fracturing and structural-textural elements of rocks the structural-paragenetic method of tectonophysics was used. It was determined that formation of the Sushchany-Perga fault zone continued during at least five phases of deformation. They were accompanied by the formation of differently oriented shear zones: Khmelivka, Sushchany, Perga, Rudnia-Khochin, Lopatychi. The Khmelivka and Sushchany shear zones are similar to striking of the Nemyriv and Khmelnik fault zones of the Ukrainian shield, which belong to the Nemyriv stage of faulting (~1.99 Ga). The Rudnia-Khochin and Perga phases are related to the fact that the Sushchany-Perga fault zone was quite active during the junction of the Fennoscandia and Sarmatia microplates. We have established that the development of thrust fault and normal down throw fault type shears, which took place in an area of compression and extension, respectively, is associated with the formation period of the Perga granitoids complex (1.80—1.70 Ga).This alternation of the compression and extension conditions has led to formation of the ore occurrences and deposits within the Perga tectonic joint. This investigation found that the Sushchany-Perga fault zone arose in the Late Paleoproterozoic at the Nemirov stage of fracture formation, simultaneously with Goryn, Lutsk, Teteriv and Nemyriv fault zones as a result of the junction of two ancient microplates — Fennoscandia and Sarmatia.

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The structure of the Western and Central parts of the Ukrainian schield. Controversial issues

Cited by 7 publications

References 4 publications

Selection of areas prospective for the search of primary hydrogen in the territory of Ukraine (based on the data of the 3D P-velocity model of the mantle)

Selection of areas prospective for the search of primary hydrogen in the territory of Ukraine (based on the data of the 3D P-velocity model of the mantle)

Interpretation of the 3d Geoelectrical Model of the Intersection Area of the Zvizdal-Zaliska and Nemyrivsk Fault Zones

Inner structure and kinematics of the Sushchany-Perga fault zone of the Ukrainian Shield according to the tectonophysical study

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