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Geodynamic features of joint zone of the Eurasian plate and the Alpine-Himalayan belt within the limits of Ukraine and adjacent areas

Geodynamic features of joint zone of the Eurasian plate and the Alpine-Himalayan belt within the limits of Ukraine and adjacent areas

Based on the analysis of geophysical and geological data of recent 10—15 years the boundaries and inner structure of the transition zone from the Eurasian plate (EAP) to the Alpine- Himalayan folded belt (AHB) extending from the Eastern Carpathians to the Great Caucasus were defined here. DSS (deep...

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Main Authors: Gintov, O.B., Egorova, T.P., Tsvetkova, T.A., Bugaenko, I., Murovskaya, A.V.
Format: Article
Language:rus
Published: Subbotin Institute of Geophysics of the NAS of Ukraine 2014
Subjects:
lithosphere
mantle
plate
sloping layer
suture
Eurasian plate
Alpine-Himalayan belt
Paleotethys
Online Access:https://journals.uran.ua/geofizicheskiy/article/view/111568
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spelling journalsuranua-geofizicheskiy-article-1115682020-10-07T11:55:34Z Geodynamic features of joint zone of the Eurasian plate and the Alpine-Himalayan belt within the limits of Ukraine and adjacent areas Gintov, O.B. Egorova, T.P. Tsvetkova, T.A. Bugaenko, I. Murovskaya, A.V. lithosphere mantle plate sloping layer suture Eurasian plate Alpine-Himalayan belt Paleotethys Based on the analysis of geophysical and geological data of recent 10—15 years the boundaries and inner structure of the transition zone from the Eurasian plate (EAP) to the Alpine- Himalayan folded belt (AHB) extending from the Eastern Carpathians to the Great Caucasus were defined here. DSS (deep seismic sounding) data of the International projects EUROBRIDGE, DOBRE, CELEBRATION 2000 and the results of reinterpretation of earlier DSS profiles along the Black Sea region were used. Results of seismic tomography studies, fulfilled by the Institute of Geophysics of NAS of Ukraine within the Eurasian part of the study area, were geologically reinterpreted. Paleogeodynamic studies and paleogeographic reconstructions, performed by the Western, Ukrainian and Russian scientists, were also involved. It is shown that velocity and density characteristics of the EAP and AHB lithosphere, that is their buoyancy, do not contradict the possibility of subduction of lithospheric plates under the EAP as well as under the AHB. In the upper mantle the sloping layers 150—200 km thick and 200—750 km long were revealed, corresponding to the areas of lithospheric plates (slabs), being submerged into the asthenosphere during different time, since the Permian-Triassic period. Almost everywhere the beginning of these slabs at the surface coincides with known and supposed, according to geological data, suture zones. Due to divergent and convergent processes, the junction zone of the EAP and AHB in the south changed its position within the band (on modern geographical basis) from the Northern Donbas to the middle part of the Black Sea basin. It has been geophysically proved that the Scythian and Rava-Russian epiorogenic zones were formed as parts of the EAP, though later they were separated from it. Subbotin Institute of Geophysics of the NAS of Ukraine 2014-10-01 Article Article application/pdf https://journals.uran.ua/geofizicheskiy/article/view/111568 10.24028/gzh.0203-3100.v36i5.2014.111568 Geofizicheskiy Zhurnal; Vol. 36 No. 5 (2014); 26-63 Геофизический журнал; Том 36 № 5 (2014); 26-63 Геофізичний журнал; Том 36 № 5 (2014); 26-63 2524-1052 0203-3100 rus https://journals.uran.ua/geofizicheskiy/article/view/111568/106556 Copyright (c) 2020 Geofizicheskiy Zhurnal https://creativecommons.org/licenses/by/4.0
institution Geofizicheskiy Zhurnal
collection OJS
language rus
topic lithosphere
mantle
plate
sloping layer
suture
Eurasian plate
Alpine-Himalayan belt
Paleotethys
spellingShingle lithosphere
mantle
plate
sloping layer
suture
Eurasian plate
Alpine-Himalayan belt
Paleotethys
Gintov, O.B.
Egorova, T.P.
Tsvetkova, T.A.
Bugaenko, I.
Murovskaya, A.V.
Geodynamic features of joint zone of the Eurasian plate and the Alpine-Himalayan belt within the limits of Ukraine and adjacent areas
topic_facet lithosphere
mantle
plate
sloping layer
suture
Eurasian plate
Alpine-Himalayan belt
Paleotethys
format Article
author Gintov, O.B.
Egorova, T.P.
Tsvetkova, T.A.
Bugaenko, I.
Murovskaya, A.V.
author_facet Gintov, O.B.
Egorova, T.P.
Tsvetkova, T.A.
Bugaenko, I.
Murovskaya, A.V.
author_sort Gintov, O.B.
title Geodynamic features of joint zone of the Eurasian plate and the Alpine-Himalayan belt within the limits of Ukraine and adjacent areas
title_short Geodynamic features of joint zone of the Eurasian plate and the Alpine-Himalayan belt within the limits of Ukraine and adjacent areas
title_full Geodynamic features of joint zone of the Eurasian plate and the Alpine-Himalayan belt within the limits of Ukraine and adjacent areas
title_fullStr Geodynamic features of joint zone of the Eurasian plate and the Alpine-Himalayan belt within the limits of Ukraine and adjacent areas
title_full_unstemmed Geodynamic features of joint zone of the Eurasian plate and the Alpine-Himalayan belt within the limits of Ukraine and adjacent areas
title_sort geodynamic features of joint zone of the eurasian plate and the alpine-himalayan belt within the limits of ukraine and adjacent areas
description Based on the analysis of geophysical and geological data of recent 10—15 years the boundaries and inner structure of the transition zone from the Eurasian plate (EAP) to the Alpine- Himalayan folded belt (AHB) extending from the Eastern Carpathians to the Great Caucasus were defined here. DSS (deep seismic sounding) data of the International projects EUROBRIDGE, DOBRE, CELEBRATION 2000 and the results of reinterpretation of earlier DSS profiles along the Black Sea region were used. Results of seismic tomography studies, fulfilled by the Institute of Geophysics of NAS of Ukraine within the Eurasian part of the study area, were geologically reinterpreted. Paleogeodynamic studies and paleogeographic reconstructions, performed by the Western, Ukrainian and Russian scientists, were also involved. It is shown that velocity and density characteristics of the EAP and AHB lithosphere, that is their buoyancy, do not contradict the possibility of subduction of lithospheric plates under the EAP as well as under the AHB. In the upper mantle the sloping layers 150—200 km thick and 200—750 km long were revealed, corresponding to the areas of lithospheric plates (slabs), being submerged into the asthenosphere during different time, since the Permian-Triassic period. Almost everywhere the beginning of these slabs at the surface coincides with known and supposed, according to geological data, suture zones. Due to divergent and convergent processes, the junction zone of the EAP and AHB in the south changed its position within the band (on modern geographical basis) from the Northern Donbas to the middle part of the Black Sea basin. It has been geophysically proved that the Scythian and Rava-Russian epiorogenic zones were formed as parts of the EAP, though later they were separated from it.
publisher Subbotin Institute of Geophysics of the NAS of Ukraine
publishDate 2014
url https://journals.uran.ua/geofizicheskiy/article/view/111568
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first_indexed 2024-04-21T19:40:24Z
last_indexed 2024-04-21T19:40:24Z
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