RomUkrSeis: seismic model of the crust and upper mantle across the Eastern Carpathians – from the Apuseni Mountains to the Ukrainian Shield

Vitaly Starostenko; Tomasz Janik; Victor Mocanu; Randell Stephenson; Tamara Yegorova; Tatiana Amashukeli; Wojciech Czuba; Piotr Środa; Anna Murovskaya; Katerina Kolomiyets; Dmytro Lysynchuk; Jan Okoń; Alina Dragut; Victor Omelchenko; Olga Legostaieva; Dmytro Gryn; James Mechie; Anatoly Tolkunov

doi:10.1016/j.tecto.2020.228620

RomUkrSeis: seismic model of the crust and upper mantle across the Eastern Carpathians – from the Apuseni Mountains to the Ukrainian Shield

Vitaly Starostenko, Tomasz Janik, Victor Mocanu, Randell Stephenson^*, Tamara Yegorova, Tatiana Amashukeli, Wojciech Czuba, Piotr Środa, Anna Murovskaya, Katerina Kolomiyets, Dmytro Lysynchuk, Jan Okoń, Alina Dragut, Victor Omelchenko, Olga Legostaieva, Dmytro Gryn, James Mechie, Anatoly Tolkunov

^*Corresponding author for this work

Geology and Geophysics

Research output: Contribution to journal › Article › peer-review

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Abstract

RomUkrSeis is a controlled source wide-angle reflection and refraction (WARR) profile acquired in August 2014. It is 675 km long, running roughly SW-NE from the Apuseni Mountains in Romania and the Transylvanian Basin, crossing the arc of the Eastern Carpathian orogen and terminating in the East European Craton (EEC) in SW Ukraine. Well-constrained 2-D ray-tracing P- and partly S-wave velocity models have been constructed along the profile from 348 single-component seismic recorders and eleven shot points. The Eastern Carpathian arc formed in the Cenozoic and have obscured the pre-existing Teisseyre-Tornquist Zone (TTZ), which is a transition zone between the Precambrian EEC and continental terranes accreted to it from the southwest in the Palaeozoic. The TTZ is characterised by low-velocity through its entire crust (6.0-6.3 km/s) and a considerable width (~140 km). It is interpreted as EEC crust stretched during rifting and continental margin formation in the Neoproterozoic and early Palaeozoic. The crust of the TTZ has a “trough in trough” structure wherein an upper body of ~40 km width comprising Outer Carpathian (Vp 4.9 km/s) and Late Palaeozoic-Mesozoic (Vp 5.4 km/s) units to 15 km depth lies above a wider, deeper one of inferred Neoproterozoic-early Palaeozoic strata. The crust of the Transylvanian Basin and Apuseni Mountains is relatively thin (~32 km). A high-velocity body at 4-12 km depth in this area is interpreted as a rootless fragment of an ophiolite complex exposed at the surface in this area. The lower crust beneath the Transylvanian Basin displays higher velocities than adjacent segments. Moho topography is strongly differentiated along the profile, varying from 32 to 50 km. The Moho shape, especially in the area between the Inner and Outer Carpathians, suggests a NE dip and, hence, thrusting of the Tisza-Dacia lowermost crustal and upper mantle units under the TTZ domain which, in turn, could be thrust under the cratonic (EEC) block.

Original language	English
Article number	228620
Number of pages	28
Journal	Tectonophysics
Volume	794
Early online date	10 Sept 2020
DOIs	https://doi.org/10.1016/j.tecto.2020.228620
Publication status	Published - 5 Nov 2020

Bibliographical note

RomUkrSeis was carried out by a consortium of organisations, the Faculty of Geology and Geophysics and the Doctoral School of Geology of the University of Bucharest (Romania), the Subbotin Institute of Geophysics of the National Academy of Sciences of Ukraine (Kiev), the Institute of Geophysics of the Polish Academy of Sciences (Warsaw), the Deutsches GeoForschungsZentrum (Potsdam) and the School of Geosciences of the University of Aberdeen (Scotland). Financial support for drilling/shooting works on the territory of Romania came from S.C. Prospectiuni S.A. (with a special mention to former CEO Gehrig Stannard Schultz, currently at EPI Group, United Kingdom), Hunt Oil of Romania, Repsol Romania and on the territory of Ukraine from Ukrgeofizika. Participation of the Polish group in this work was supported within statutory activities No 3841/E-41/S/2014-2020 of the Ministry of Science and Higher Education of Poland. The authors express their sincere appreciation of the activities of many people who took part in field work and data acquisition. A large part of the instrumentation was provided by the Geophysical Instrument Pool of the Deutsches GeoForschungsZentrum (GFZ), Potsdam, Germany. Christian Haberland is thanked for his support and kindness facilitating the loan of this equipment to the RomUkrSeis consortium. The public domain packages GMT (Wessel and Smith, 1995) and Seismic Unix (Cohen and Stockwell Jr., 1997) were used in the preparation of maps and for seismic data processing. Tesseral Technologies Inc. (Calgary) developed the software for the full waveform modelling and we express our gratitude to their staff for technical support. The authors also wish to thank Professor Richard England (University of Leicester) and an anonymous reviewer for their constructive comments on an earlier version of this manuscript. This version is much improved as a result.

Keywords

Apuseni Mountains
Transylvanian Basin
TTZ
Eastern Carpathians
East European Craton
lithospheric structure
WARR profile
EUROPEAN SUTURE ZONE
TRANSYLVANIAN BASIN
JURASSIC OPHIOLITES
TTL
WESTERN CARPATHIANS
GEODYNAMIC IMPLICATIONS
CELEBRATION 2000 PROFILES
Lithospheric structure
LITHOSPHERIC STRUCTURE
TERTIARY TECTONIC EVOLUTION
KINEMATIC EVOLUTION
BLACK-SEA

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Starostenko_etal_Tp_RomUKrSeis_AAM
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Accepted author manuscript, 14.5 MBLicence: CC BY-NC-ND

Cite this

Starostenko, V., Janik, T., Mocanu, V., Stephenson, R., Yegorova, T., Amashukeli, T., Czuba, W., Środa, P., Murovskaya, A., Kolomiyets, K., Lysynchuk, D., Okoń, J., Dragut, A., Omelchenko, V., Legostaieva, O., Gryn, D., Mechie, J., & Tolkunov, A. (2020). RomUkrSeis: seismic model of the crust and upper mantle across the Eastern Carpathians – from the Apuseni Mountains to the Ukrainian Shield. Tectonophysics, 794, Article 228620. https://doi.org/10.1016/j.tecto.2020.228620

Starostenko, V, Janik, T, Mocanu, V, Stephenson, R, Yegorova, T, Amashukeli, T, Czuba, W, Środa, P, Murovskaya, A, Kolomiyets, K, Lysynchuk, D, Okoń, J, Dragut, A, Omelchenko, V, Legostaieva, O, Gryn, D, Mechie, J & Tolkunov, A 2020, 'RomUkrSeis: seismic model of the crust and upper mantle across the Eastern Carpathians – from the Apuseni Mountains to the Ukrainian Shield', Tectonophysics, vol. 794, 228620. https://doi.org/10.1016/j.tecto.2020.228620

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title = "RomUkrSeis: seismic model of the crust and upper mantle across the Eastern Carpathians – from the Apuseni Mountains to the Ukrainian Shield",

abstract = "RomUkrSeis is a controlled source wide-angle reflection and refraction (WARR) profile acquired in August 2014. It is 675 km long, running roughly SW-NE from the Apuseni Mountains in Romania and the Transylvanian Basin, crossing the arc of the Eastern Carpathian orogen and terminating in the East European Craton (EEC) in SW Ukraine. Well-constrained 2-D ray-tracing P- and partly S-wave velocity models have been constructed along the profile from 348 single-component seismic recorders and eleven shot points. The Eastern Carpathian arc formed in the Cenozoic and have obscured the pre-existing Teisseyre-Tornquist Zone (TTZ), which is a transition zone between the Precambrian EEC and continental terranes accreted to it from the southwest in the Palaeozoic. The TTZ is characterised by low-velocity through its entire crust (6.0-6.3 km/s) and a considerable width (~140 km). It is interpreted as EEC crust stretched during rifting and continental margin formation in the Neoproterozoic and early Palaeozoic. The crust of the TTZ has a “trough in trough” structure wherein an upper body of ~40 km width comprising Outer Carpathian (Vp 4.9 km/s) and Late Palaeozoic-Mesozoic (Vp 5.4 km/s) units to 15 km depth lies above a wider, deeper one of inferred Neoproterozoic-early Palaeozoic strata. The crust of the Transylvanian Basin and Apuseni Mountains is relatively thin (~32 km). A high-velocity body at 4-12 km depth in this area is interpreted as a rootless fragment of an ophiolite complex exposed at the surface in this area. The lower crust beneath the Transylvanian Basin displays higher velocities than adjacent segments. Moho topography is strongly differentiated along the profile, varying from 32 to 50 km. The Moho shape, especially in the area between the Inner and Outer Carpathians, suggests a NE dip and, hence, thrusting of the Tisza-Dacia lowermost crustal and upper mantle units under the TTZ domain which, in turn, could be thrust under the cratonic (EEC) block.",

keywords = "Apuseni Mountains, Transylvanian Basin, TTZ, Eastern Carpathians, East European Craton, lithospheric structure, WARR profile, EUROPEAN SUTURE ZONE, TRANSYLVANIAN BASIN, JURASSIC OPHIOLITES, TTL, WESTERN CARPATHIANS, GEODYNAMIC IMPLICATIONS, CELEBRATION 2000 PROFILES, Lithospheric structure, LITHOSPHERIC STRUCTURE, TERTIARY TECTONIC EVOLUTION, KINEMATIC EVOLUTION, BLACK-SEA",

author = "Vitaly Starostenko and Tomasz Janik and Victor Mocanu and Randell Stephenson and Tamara Yegorova and Tatiana Amashukeli and Wojciech Czuba and Piotr {\'S}roda and Anna Murovskaya and Katerina Kolomiyets and Dmytro Lysynchuk and Jan Oko{\'n} and Alina Dragut and Victor Omelchenko and Olga Legostaieva and Dmytro Gryn and James Mechie and Anatoly Tolkunov",

note = "RomUkrSeis was carried out by a consortium of organisations, the Faculty of Geology and Geophysics and the Doctoral School of Geology of the University of Bucharest (Romania), the Subbotin Institute of Geophysics of the National Academy of Sciences of Ukraine (Kiev), the Institute of Geophysics of the Polish Academy of Sciences (Warsaw), the Deutsches GeoForschungsZentrum (Potsdam) and the School of Geosciences of the University of Aberdeen (Scotland). Financial support for drilling/shooting works on the territory of Romania came from S.C. Prospectiuni S.A. (with a special mention to former CEO Gehrig Stannard Schultz, currently at EPI Group, United Kingdom), Hunt Oil of Romania, Repsol Romania and on the territory of Ukraine from Ukrgeofizika. Participation of the Polish group in this work was supported within statutory activities No 3841/E-41/S/2014-2020 of the Ministry of Science and Higher Education of Poland. The authors express their sincere appreciation of the activities of many people who took part in field work and data acquisition. A large part of the instrumentation was provided by the Geophysical Instrument Pool of the Deutsches GeoForschungsZentrum (GFZ), Potsdam, Germany. Christian Haberland is thanked for his support and kindness facilitating the loan of this equipment to the RomUkrSeis consortium. The public domain packages GMT (Wessel and Smith, 1995) and Seismic Unix (Cohen and Stockwell Jr., 1997) were used in the preparation of maps and for seismic data processing. Tesseral Technologies Inc. (Calgary) developed the software for the full waveform modelling and we express our gratitude to their staff for technical support. The authors also wish to thank Professor Richard England (University of Leicester) and an anonymous reviewer for their constructive comments on an earlier version of this manuscript. This version is much improved as a result.",

year = "2020",

month = nov,

day = "5",

doi = "10.1016/j.tecto.2020.228620",

language = "English",

volume = "794",

journal = "Tectonophysics",

issn = "0040-1951",

publisher = "Elsevier",

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T2 - seismic model of the crust and upper mantle across the Eastern Carpathians – from the Apuseni Mountains to the Ukrainian Shield

AU - Starostenko, Vitaly

AU - Janik, Tomasz

AU - Mocanu, Victor

AU - Stephenson, Randell

AU - Yegorova, Tamara

AU - Amashukeli, Tatiana

AU - Czuba, Wojciech

AU - Środa, Piotr

AU - Murovskaya, Anna

AU - Kolomiyets, Katerina

AU - Lysynchuk, Dmytro

AU - Okoń, Jan

AU - Dragut, Alina

AU - Omelchenko, Victor

AU - Legostaieva, Olga

AU - Gryn, Dmytro

AU - Mechie, James

AU - Tolkunov, Anatoly

N1 - RomUkrSeis was carried out by a consortium of organisations, the Faculty of Geology and Geophysics and the Doctoral School of Geology of the University of Bucharest (Romania), the Subbotin Institute of Geophysics of the National Academy of Sciences of Ukraine (Kiev), the Institute of Geophysics of the Polish Academy of Sciences (Warsaw), the Deutsches GeoForschungsZentrum (Potsdam) and the School of Geosciences of the University of Aberdeen (Scotland). Financial support for drilling/shooting works on the territory of Romania came from S.C. Prospectiuni S.A. (with a special mention to former CEO Gehrig Stannard Schultz, currently at EPI Group, United Kingdom), Hunt Oil of Romania, Repsol Romania and on the territory of Ukraine from Ukrgeofizika. Participation of the Polish group in this work was supported within statutory activities No 3841/E-41/S/2014-2020 of the Ministry of Science and Higher Education of Poland. The authors express their sincere appreciation of the activities of many people who took part in field work and data acquisition. A large part of the instrumentation was provided by the Geophysical Instrument Pool of the Deutsches GeoForschungsZentrum (GFZ), Potsdam, Germany. Christian Haberland is thanked for his support and kindness facilitating the loan of this equipment to the RomUkrSeis consortium. The public domain packages GMT (Wessel and Smith, 1995) and Seismic Unix (Cohen and Stockwell Jr., 1997) were used in the preparation of maps and for seismic data processing. Tesseral Technologies Inc. (Calgary) developed the software for the full waveform modelling and we express our gratitude to their staff for technical support. The authors also wish to thank Professor Richard England (University of Leicester) and an anonymous reviewer for their constructive comments on an earlier version of this manuscript. This version is much improved as a result.

PY - 2020/11/5

Y1 - 2020/11/5

N2 - RomUkrSeis is a controlled source wide-angle reflection and refraction (WARR) profile acquired in August 2014. It is 675 km long, running roughly SW-NE from the Apuseni Mountains in Romania and the Transylvanian Basin, crossing the arc of the Eastern Carpathian orogen and terminating in the East European Craton (EEC) in SW Ukraine. Well-constrained 2-D ray-tracing P- and partly S-wave velocity models have been constructed along the profile from 348 single-component seismic recorders and eleven shot points. The Eastern Carpathian arc formed in the Cenozoic and have obscured the pre-existing Teisseyre-Tornquist Zone (TTZ), which is a transition zone between the Precambrian EEC and continental terranes accreted to it from the southwest in the Palaeozoic. The TTZ is characterised by low-velocity through its entire crust (6.0-6.3 km/s) and a considerable width (~140 km). It is interpreted as EEC crust stretched during rifting and continental margin formation in the Neoproterozoic and early Palaeozoic. The crust of the TTZ has a “trough in trough” structure wherein an upper body of ~40 km width comprising Outer Carpathian (Vp 4.9 km/s) and Late Palaeozoic-Mesozoic (Vp 5.4 km/s) units to 15 km depth lies above a wider, deeper one of inferred Neoproterozoic-early Palaeozoic strata. The crust of the Transylvanian Basin and Apuseni Mountains is relatively thin (~32 km). A high-velocity body at 4-12 km depth in this area is interpreted as a rootless fragment of an ophiolite complex exposed at the surface in this area. The lower crust beneath the Transylvanian Basin displays higher velocities than adjacent segments. Moho topography is strongly differentiated along the profile, varying from 32 to 50 km. The Moho shape, especially in the area between the Inner and Outer Carpathians, suggests a NE dip and, hence, thrusting of the Tisza-Dacia lowermost crustal and upper mantle units under the TTZ domain which, in turn, could be thrust under the cratonic (EEC) block.

AB - RomUkrSeis is a controlled source wide-angle reflection and refraction (WARR) profile acquired in August 2014. It is 675 km long, running roughly SW-NE from the Apuseni Mountains in Romania and the Transylvanian Basin, crossing the arc of the Eastern Carpathian orogen and terminating in the East European Craton (EEC) in SW Ukraine. Well-constrained 2-D ray-tracing P- and partly S-wave velocity models have been constructed along the profile from 348 single-component seismic recorders and eleven shot points. The Eastern Carpathian arc formed in the Cenozoic and have obscured the pre-existing Teisseyre-Tornquist Zone (TTZ), which is a transition zone between the Precambrian EEC and continental terranes accreted to it from the southwest in the Palaeozoic. The TTZ is characterised by low-velocity through its entire crust (6.0-6.3 km/s) and a considerable width (~140 km). It is interpreted as EEC crust stretched during rifting and continental margin formation in the Neoproterozoic and early Palaeozoic. The crust of the TTZ has a “trough in trough” structure wherein an upper body of ~40 km width comprising Outer Carpathian (Vp 4.9 km/s) and Late Palaeozoic-Mesozoic (Vp 5.4 km/s) units to 15 km depth lies above a wider, deeper one of inferred Neoproterozoic-early Palaeozoic strata. The crust of the Transylvanian Basin and Apuseni Mountains is relatively thin (~32 km). A high-velocity body at 4-12 km depth in this area is interpreted as a rootless fragment of an ophiolite complex exposed at the surface in this area. The lower crust beneath the Transylvanian Basin displays higher velocities than adjacent segments. Moho topography is strongly differentiated along the profile, varying from 32 to 50 km. The Moho shape, especially in the area between the Inner and Outer Carpathians, suggests a NE dip and, hence, thrusting of the Tisza-Dacia lowermost crustal and upper mantle units under the TTZ domain which, in turn, could be thrust under the cratonic (EEC) block.

KW - Apuseni Mountains

KW - Transylvanian Basin

KW - TTZ

KW - Eastern Carpathians

KW - East European Craton

KW - lithospheric structure

KW - WARR profile

KW - EUROPEAN SUTURE ZONE

KW - TRANSYLVANIAN BASIN

KW - JURASSIC OPHIOLITES

KW - TTL

KW - WESTERN CARPATHIANS

KW - GEODYNAMIC IMPLICATIONS

KW - CELEBRATION 2000 PROFILES

KW - Lithospheric structure

KW - LITHOSPHERIC STRUCTURE

KW - TERTIARY TECTONIC EVOLUTION

KW - KINEMATIC EVOLUTION

KW - BLACK-SEA

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U2 - 10.1016/j.tecto.2020.228620

DO - 10.1016/j.tecto.2020.228620

M3 - Article

SN - 0040-1951

VL - 794

JO - Tectonophysics

JF - Tectonophysics

M1 - 228620

ER -

RomUkrSeis: seismic model of the crust and upper mantle across the Eastern Carpathians – from the Apuseni Mountains to the Ukrainian Shield

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Bibliographical note

Keywords

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