Zones of recent activation of Ukraine

Gordienko, V. V.; Гордиенко, И. В.; Gordienko, L.Ya.; Zavgorodnyaya, O V; Logvinov, I.M.; Tarasov, V. N.

doi:10.24028/gzh.0203-3100.v42i2.2020.201740

Cited by 11 publications

(14 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mechanisms governing activation processes on the USh are questionable. Although they can be attributed to the remote Alpine-Carpathian compressional deformations transmitted along the original fault systems [Starostenko et al, 2018], according to [Gordienko et al, 2020], current tectonic activity on the USh is not perceived as a kind of involvement in the activity of neighboring young structures and corresponds to the initial stages of rifting. of typical crystalline rocks of the USh [Shepel, 2003]; (b) graphite content (C) in samples of graphite-containing minerals [Gordienko et al, 2005].…”

Section: Discussionmentioning

confidence: 99%

“…Their manifestation is mostly concentrated at the northwestern USh boundary with the DDB and in the basin itself, at the southwestern USh boundary with the VPP and in the central and the eastern part of the Shield (Fig. 2a) [Gordienko et al, 2020]. zones of recent activation (grey areas) [Gordienko et al, 2020] and increased heat flow areas (contours in mW/m 2 ) [Gordienko et al, 2002]; Kpl and KNpl -Korosten and Korsun-Novomirgorod plutons (as in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…2a) [Gordienko et al, 2020]. zones of recent activation (grey areas) [Gordienko et al, 2020] and increased heat flow areas (contours in mW/m 2 ) [Gordienko et al, 2002]; Kpl and KNpl -Korosten and Korsun-Novomirgorod plutons (as in Fig. 1a); KCA (dashed belt) -Kirovograd conductivity anomaly [Gordienko et al, 2005];…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Geodynamics

Kováčiková¹,

Logvinov²,

Tarasov³

2022

JGD

View full text Add to dashboard Cite

The purpose of the work is to study the features of seismotectonics of the junction zone of the Oash and Transcarpathian faults in the Ukrainian Transcarpathians. The research methodology combines a complex analysis of geological-tectonic, seismological, geomorphological and geodetic data on the studied area. For the clarification of coordinates and depths of local earthquake foci we applied methods of their hypocenters specification, using a calculated seismological hodograph and kinematic corrections. Geological and geophysical data, in particular on regional profiles, were used to link seismic events to specific geological structures. It was established that a number of seismic events were recorded at depths of 40-52 km in the studied zone, in its northeastern part. They occurred simultaneously with traditional deep localization of seismic sources in the crust of the Transcarpathian depression (0-27 km deep), including at the depths of the sole of thrust sedimentary strata / roof of the pre-Neogene basement of the Transcarpathian depression (2-3 km deep) in the southwestern part of the studied area. Since these earthquakes are spatially localized to the northeast of the zone where the Transcarpathian deep fault is traced by geological and geomorphological data on the surface, they indicate the subduction of the crustal structures of the Transcarpathian trough in this direction under the thrusts of the Folded Carpathians. This is also evidenced by the corresponding slope of the seismofocal zone at the intersection of the Transcarpathian Deep Fault at greater (15-30 km) depths. These and other features of local seismotectonics reflect the so-called "crocodile" tectonics in the Ukrainian Carpathians. The features encompass the reverse, south-west slope of the seismofocal zone at shallower (0-12 km) depths, as well as the features of the relief of the Carpathians in the studied seismogenic zone. They fully correspond to the characteristics of the "alpine" and "terrain" geodynamics of the region, i.e. compression and displacement in the northeastern and eastern directions, respectively. For the first time, the research established the presence of relatively deeper (30-55 km) seismic activity in the earth's crust of the Ukrainian Transcarpathians – in the zone of subduction of the Moho border under the Carpathians in the area of junction of the Transcarpathian and Oash deep faults. Additionally, the geodynamic and tectonophysical justification for its presence was given in terms of combination of "alpine", terrane and asthenolitic geodynamics of the region. Taking into account the features of seismotectonics of the Oash and Transcarpathian faults junction zone will contribute to clarifying the assessment of the characteristics and peculiarities of the spatial distribution of natural geoecological, in particular, seismotectonic risks and hazards in the central part of the Ukrainian Transcarpathians.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Geodynamics

Kováčiková¹,

Logvinov²,

Tarasov³

2022

JGD

View full text Add to dashboard Cite

show abstract

“…A negative impact on the performance of elements of welded metal structures is also exerted by local zones of stress concentration (SC) that arise during long-term operation, where plastic deformation is observed to one degree or another. Some unfavorable factors that contribute to the initiation and development of cracks and, as a result, lead to failures and serious accidents, are undoubtedly one of the main reasons for the decrease in the reliability and safety of operation of welded metal structures in general [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Magnetic control of structural changes in structural steels during plastic deformation

Гордиенко

2020

E3S Web Conf.

View full text Add to dashboard Cite

The analysis and consideration of the influence of the main factors on the damage of welded metal structures during long-term operation. The relationship between the strength of the magnetic field of the Hр scattering and structural changes in structural steels that occur during cold plastic deformation to different degrees is established. It is shown that at small degrees of deformation, the change in the magnetic parameter Hр is large. As they increase, the HP value decreases and tends to the values of the Earth's magnetic field. The data of microstructural analysis of the metal of structural steels are in good agreement with the results of the passive ferrosonde method of control. A method for evaluating the effect of cold plastic deformation on the magnetic properties of metal in structural steels has been developed.

show abstract

“…The imperfection of existing diagnostic methods, tools and techniques, the need for thorough preparation of the control surface [7,8] allow concluding that a comprehensive approach, which includes the development and exploitation of promising materials and methods for their processing, as well as application of effective technologies strengthening metal alloys can help solve the problem of diagnosing a technical condition [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Influence of recrystallization annealing regime on the formation of a fine-grained structure in structural steels

2020

View full text Add to dashboard Cite

The analysis of the main factors affecting the reliability and safety of welded metal structures in long-term operation is carried out. The features of obtaining a fine-grained structure due to recrystallization annealing and the main factors affecting the degree of dispersion of the formed microstructure are considered. For low-carbon steel 08ps and low-alloy steel 09G2S, optimal recrystallization annealing regimes have been developed with the aim of obtaining final structures with a given degree of dispersion, typical for real building metal structures. It was found that the degree of dispersion of the obtained microstructures depends on the heating temperature, the initial structure, and the chemical composition of the steels.

show abstract

Zones of recent activation of Ukraine

Cited by 11 publications

References 0 publications

Geodynamics

Geodynamics

Magnetic control of structural changes in structural steels during plastic deformation

Influence of recrystallization annealing regime on the formation of a fine-grained structure in structural steels

Contact Info

Product

Resources

About