Transverse deformation zonality values and palinspastic reconstructions of Carpathians on the base of structural analysis of folding


  • V.V. Gonchar Subbotin Institute of Geophysics of the National Academy of Sciences of Ukraine, Ukraine



the Ukrainian Carpathians, folds, deformations, non-coaxial flow, palinspastic reconstruction


On the basis of the structural analysis of folds the complex deformation profile in the Hust—Ivano-Frankivsk (central part of Ukrainian Carpathians) transsection is constructed. It characterises distribution of non-coaxial flow deformation on a spectrum of parameters: angles of an axis of compression and simple shear, sizes of horizontal compression and deformational ellipses. Horizontal shortening shows a series of peaks over more or less levelled general background of double compression. The most intensive deformation, expressed in the maximum sizes of horizontal and general compression (to 4 times), is dated for area of Internal Nappes (basically the Dukljansky zone) and to the termination of the Krosnensky zone. There are also indications on growth of deformation in back of Internal Nappes and in front of Skibovaya zone. Deformation as a whole goes down to the central part of a profile occupied by Krosnensky zone where conditions of almost horizontal main compression are marked also. Reconstruction of the primary sizes of structural zones along of Hust—Ivano-Frankivsk profile in the interval of Porkuletsky—Skibovoj zones as a result of returning in a initial condition before deformation of non-coaxial flow has increased in 2.4 times, having reached 183 km that it is necessary to consider as the bottom estimation of initial width which should be increased at the expense of components of bend folding. Possibilities which are given by model of non-coaxial flow for reconstruction on the scale of full deep crossing of Carpathians are short estimated for what approach of homogeneous deformation on depth has been used: 2-time size of horizontal reduction, and also angle of an axis of compression 20є are accepted as averages. Obtained contours of the Krosnensky zone of profile DOBRE-3 shows convergence with results of application of a method of the balanced cross-sections.


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How to Cite

Gonchar, V. . (2022). Transverse deformation zonality values and palinspastic reconstructions of Carpathians on the base of structural analysis of folding. Geofizicheskiy Zhurnal, 44(3), 96–102.