Tectonophysical conditions of late stages of evolution in the middle part of Transcarpathian deep fault
Journal Title: Геофизический журнал - Year 2015, Vol 37, Issue 5
Abstract
There is a problem of the mechanism of Neogene magmatism appearance in Transcarpathia within tectonic evolution of the Carpathian-Pannonian region. In consideration of general submeridional compression the new kinematic and dynamic scheme of Neogene tectonic and magmatic activation associates magmatism with formation of the shear-zone with right-shift structural paragenesis in the Transcarpathian trough area. According to the scheme the sources of volcanic eruptions were concentrated within the bounds of tension gashes that progressed during the shear-zone impulse evolution. Due to outcrop features of the region the structural argumentation of proposed scheme is effective only in north-eastern border of the shear-zone, on the Transcarpathian deep fault territory, where fault parageneses of different ranks are mapped. Detailed studies carried out within the middle part of the Transcarpathian deep fault allowed to show the jet structure of the central zone of the fault and the intense crushing and exfoliation of flysch formation that took place before volcanism as well as post-volcanic fissure formation. Three stages of fissure formation were marked out and the tectonophysical analysis of their paragenesis shows right-side shift type of local stress fields. The modification of the axes orientation of main normal stresses is explained by consistent implementation of the trans-pressure scheme, the simple shear scheme and the trans-tension scheme. The volcanic rocks, which cover tectonic rocks of the Transcarpathian deep fault seam zone, contain the sporadically shown up fault structures that are the evidence of lateral as well as sub-vertical displacement.
Authors and Affiliations
V. V. Shevchuk, A. Vasilenko
Keywords
Related Articles
- EP ID EP531415
- DOI 10.24028/gzh.0203-3100.v37i5.2015.111151
- Views 87
- Downloads 0
Earth’s crust composition of the Ingul megablock of the Ukrainian Shield (types of crust) and patterns of location of ore mineral resources
Within the Ingul Megablock of the Ukrainian Shield, according to the data of three-dimensional density modeling, at the scale of 1 : 200 000, the thickness of conditionally allocated “granite”, “diorite”, “basalt” layers...
Kinematic evolution of the Pieniny Klippen Belt in Cenozoic (Ukrainian Carpathians)
The data on surface, subsurface and deep structure of the Pieniny Klippen Belt (PKB) have been summarized and new results of its geological-structural and fault kinematic studies within the Ukrainian part of the Eastern...
Determining source parameters from waveforms of small earthquakes in the Carpathian region of Ukraine
In the paper, a method is presented for moment tensor inversion of only direct P- and/or S-waves registered at only one station. Lesser sensitivity of direct waves, if compared to reflected and converted waves, to path e...
The main geodynamic border and seismic visualization of plumes under the East European Platform
According to the Taylor approximation method of the three-dimensional P-velocity mantle model under Eurasia, seismic imaging of the manifold plumes and super-deep fluid processes of the East European Platform was carried...
On conceptual grounds of diagnostics and monitoring of geosystems
Within the trend of ideas, methods and approaches of nonlinear dynamics basic features of geo-systems are being considered on high-quality level. It is noticed that evolution of processes and objects in lithosphere canno...