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  TTZ-South seismic experiment

Janik, T., Starostenko, V., Aleksandrowski, P., Yegorova, T., Czuba, W., Środa, P., Murovskaya, A., Zajats, K., Kolomiyets, K., Lysynchuk, D., Wójcik, D., Mechie, J., G łuszyński, A., Omelchenko, V., Legostaeva, O., Tolkunov, A., Amashukeli, T., Gryn, D., Chulkov, S. (2020): TTZ-South seismic experiment. - Geofiziceskij zurnal: mezdunarodnyj zurnal = Geophysical journal, 42, 3.
https://doi.org/10.24028/gzh.0203-3100.v42i3.2020.204698

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5002413 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5002413_4
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Janik, T.1, Author
Starostenko, V.1, Author
Aleksandrowski, P.1, Author
Yegorova, T.1, Author
Czuba, W.1, Author
Środa, P.1, Author
Murovskaya, A.1, Author
Zajats, K.1, Author
Kolomiyets, K.1, Author
Lysynchuk, D.1, Author
Wójcik, D.1, Author
Mechie, James2, Author              
G łuszyński, A.1, Author
Omelchenko, V.1, Author
Legostaeva, O.1, Author
Tolkunov, A.1, Author
Amashukeli, T.1, Author
Gryn, D.1, Author
Chulkov, S.1, Author
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum, Author              
Affiliations:
1External Organizations, ou_persistent22              
22.2 Geophysical Deep Sounding, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_66027              

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 Abstract: The wide-angle reflection and refraction (WARR) TTZ-South transect carried out in 2018 crosses the SW region of Ukraine and the SE region of Poland. The TTZ-South profile targeted the structure of the Earth’s crust and upper mantle of the Trans-European Suture Zone, as well as the southwestern segment of the East European Craton (slope of the Ukrainian Shield). The ~550 km long profile (~230 km in Poland and ~320 km in western Ukraine) is an extension of previously realized projects in Poland, TTZ (1993) and CEL03 (2000). The deep seismic sounding study along the TTZ-South profile using TEXAN and DATA-CUBE seismic stations (320 units) made it possible to obtain high-quality seismic records from eleven shot points (six in Ukraine and five in Poland). This paper presents a smooth P-wave velocity model based on first-arrival travel-time inversion using the FAST (First Arrival Seismic Tomography) code. The obtained image represents a preliminary velocity model which, according to the P-wave velocities, consists of a sedimentary layer and the crystalline crust that could comprise upper, middle and lower crustal layers. The Moho interface, approximated by the 7.5 km/s isoline, is located at 45—47 km depth in the central part of the profile, shallowing to 40 and 37 km depth in the northern (Radom-Łysogóry Unit, Poland) and southern (Volyno-Podolian Monocline, Ukraine) segments of the profile, respectively. A peculiar feature of the velocity cross-section is a number of high-velocity bodies distinguished in the depth range of 10—35 km. Such high-velocity bodies were detected previously in the crust of the Radom-Łysogóry Unit. These bodies, inferred at depths of 10—35 km, could be allochthonous fragments of what was originally a single mafic body or separate mafic bodies intruded into the crust during the break-up of Rodinia in the Neoproterozoic, which was accompanied by considerable rifting. The manifestations of such magmatism are known in the NE part of the Volyno-Podolian Monocline, where the Vendian trap formation occurs at the surface.

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Language(s): eng - English
 Dates: 2020-06-102020
 Publication Status: Finally published
 Pages: -
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 Table of Contents: The wide-angle reflection and refraction (WARR) TTZ-South transect carried out in 2018 crosses the SW region of Ukraine and the SE region of Poland. The TTZ-South profile targeted the structure of the Earth’s crust and upper mantle of the Trans-European Suture Zone, as well as the southwestern segment of the East European Craton (slope of the Ukrainian Shield). The ~550 km long profile (~230 km in Poland and ~320 km in western Ukraine) is an extension of previously realized projects in Poland, TTZ (1993) and CEL03 (2000). The deep seismic sounding study along the TTZ-South profile using TEXAN and DATA-CUBE seismic stations (320 units) made it possible to obtain high-quality seismic records from eleven shot points (six in Ukraine and five in Poland). This paper presents a smooth P-wave velocity model based on first-arrival travel-time inversion using the FAST (First Arrival Seismic Tomography) code.

The obtained image represents a preliminary velocity model which, according to the P-wave velocities, consists of a sedimentary layer and the crystalline crust that could comprise upper, middle and lower crustal layers. The Moho interface, approximated by the 7.5 km/s isoline, is located at 45—47 km depth in the central part of the profile, shallowing to 40 and 37 km depth in the northern (Radom-Łysogóry Unit, Poland) and southern (Volyno-Podolian Monocline, Ukraine) segments of the profile, respectively. A peculiar feature of the velocity cross-section is a number of high-velocity bodies distinguished in the depth range of 10—35 km. Such high-velocity bodies were detected previously in the crust of the Radom-Łysogóry Unit. These bodies, inferred at depths of 10—35 km, could be allochthonous fragments of what was originally a single mafic body or separate mafic bodies intruded into the crust during the break-up of Rodinia in the Neoproterozoic, which was accompanied by considerable rifting. The manifestations of such magmatism are known in the NE part of the Volyno-Podolian Monocline, where the Vendian trap formation occurs at the surface.
 Rev. Method: -
 Identifiers: DOI: 10.24028/gzh.0203-3100.v42i3.2020.204698
GFZPOF: p3 PT2 Plate Boundary Systems
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Title: Geofiziceskij zurnal : mezdunarodnyj zurnal = Geophysical journal
Source Genre: Journal, other
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Pages: - Volume / Issue: 42 (3) Sequence Number: - Start / End Page: - Identifier: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals2_174