"DOBREfraction '99" - velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine)

M Grad, D Gryn, A Guterch, T Janik, R Keller, R Lang, S B Lyngsie, V Omelchenko, V I Starostenko, Randell Stephenson, S M Stovba, H Thybo, A Tolkunov

Research output: Contribution to journalArticle

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Abstract

The Donbas Foldbelt (DF) is the uplifted and deformed part of the up to 20-km-thick Dniepr-Donets Basin (DDB) that formed as the result of rifting of the East European Craton (EEC) in the Late Devonian. Uplift, especially of the southern margin of the basin, occurred in Early Permian times, in a (trans)tensional tectonic stress regime while folding and reverse faulting mainly occurred later-mainly during the Late Cretaceous. A seismic refraction/wide-angle reflection survey was carried out in 1999 (DOBREfraction'99) to complement existing Deep Seismic Sounding (DSS) data from the area that did not record significant Pn phase arrivals because of insufficient maximum offset. DOBREfraction'99 comprised some 245 recording stations along a line of 360 kin length with 11 in-line shot points as well as a 100 kin away, parallel 190 kin long subsidiary fan profile. The main profile runs between the shores of the Azov Sea in the south to the Ukraine-Russia border in the north, across the Azov Massif (Ukrainian Shield), the Foldbelt, and the Voronezh Massif Particular scientific targets include the nature of the crust-mantle transition and the geometry of crustal-upper mantle structures related to rifting and subsequent basin inversion. Tomographic inversion as well as ray-trace based velocity modelling has been carried out. The velocity signature of the sedimentary basin itself is well resolved, indicating an asymmetric form, with a steeper basement surface in the south than in the north, and a total thickness of about 20 km. A thick (>10 km) high velocity (>6.9 km/s) lower crustal body lies beneath the rift basin itself, offset slightly to the north compared to the main basin depocentre, likely related to the rifting processes. Velocities in the crust below the Ukrainian Shield, south of the Foldbelt, are in general higher than beneath the Voronezh Massif to the north. The Moho displays only slight topography around a depth of 40 km along the profile. (C) 2003 Elsevier B.V All rights reserved.

Original languageEnglish
Pages (from-to)81-110
Number of pages30
JournalTectonophysics
Volume371
Issue number1-4
DOIs
Publication statusPublished - 14 Aug 2003

Keywords

  • Dniepr-Donets Basin
  • Donbas Foldbelt
  • intraplate deformation
  • intracratonic rifling
  • seismic refraction
  • crustal and upper mantle structure
  • DNIEPR-DONETS BASIN
  • SYN-RIFT
  • EVOLUTION
  • 2-D
  • HISTORY
  • SEGMENT
  • TROUGH

Cite this

Grad, M., Gryn, D., Guterch, A., Janik, T., Keller, R., Lang, R., ... Tolkunov, A. (2003). "DOBREfraction '99" - velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine). Tectonophysics, 371(1-4), 81-110. https://doi.org/10.1016/S0040-1951(03)00211-7

"DOBREfraction '99" - velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine). / Grad, M ; Gryn, D ; Guterch, A ; Janik, T ; Keller, R ; Lang, R ; Lyngsie, S B ; Omelchenko, V ; Starostenko, V I ; Stephenson, Randell; Stovba, S M ; Thybo, H ; Tolkunov, A .

In: Tectonophysics, Vol. 371, No. 1-4, 14.08.2003, p. 81-110.

Research output: Contribution to journalArticle

Grad, M, Gryn, D, Guterch, A, Janik, T, Keller, R, Lang, R, Lyngsie, SB, Omelchenko, V, Starostenko, VI, Stephenson, R, Stovba, SM, Thybo, H & Tolkunov, A 2003, '"DOBREfraction '99" - velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine)', Tectonophysics, vol. 371, no. 1-4, pp. 81-110. https://doi.org/10.1016/S0040-1951(03)00211-7
Grad, M ; Gryn, D ; Guterch, A ; Janik, T ; Keller, R ; Lang, R ; Lyngsie, S B ; Omelchenko, V ; Starostenko, V I ; Stephenson, Randell ; Stovba, S M ; Thybo, H ; Tolkunov, A . / "DOBREfraction '99" - velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine). In: Tectonophysics. 2003 ; Vol. 371, No. 1-4. pp. 81-110.
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AU - Gryn, D

AU - Guterch, A

AU - Janik, T

AU - Keller, R

AU - Lang, R

AU - Lyngsie, S B

AU - Omelchenko, V

AU - Starostenko, V I

AU - Stephenson, Randell

AU - Stovba, S M

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N2 - The Donbas Foldbelt (DF) is the uplifted and deformed part of the up to 20-km-thick Dniepr-Donets Basin (DDB) that formed as the result of rifting of the East European Craton (EEC) in the Late Devonian. Uplift, especially of the southern margin of the basin, occurred in Early Permian times, in a (trans)tensional tectonic stress regime while folding and reverse faulting mainly occurred later-mainly during the Late Cretaceous. A seismic refraction/wide-angle reflection survey was carried out in 1999 (DOBREfraction'99) to complement existing Deep Seismic Sounding (DSS) data from the area that did not record significant Pn phase arrivals because of insufficient maximum offset. DOBREfraction'99 comprised some 245 recording stations along a line of 360 kin length with 11 in-line shot points as well as a 100 kin away, parallel 190 kin long subsidiary fan profile. The main profile runs between the shores of the Azov Sea in the south to the Ukraine-Russia border in the north, across the Azov Massif (Ukrainian Shield), the Foldbelt, and the Voronezh Massif Particular scientific targets include the nature of the crust-mantle transition and the geometry of crustal-upper mantle structures related to rifting and subsequent basin inversion. Tomographic inversion as well as ray-trace based velocity modelling has been carried out. The velocity signature of the sedimentary basin itself is well resolved, indicating an asymmetric form, with a steeper basement surface in the south than in the north, and a total thickness of about 20 km. A thick (>10 km) high velocity (>6.9 km/s) lower crustal body lies beneath the rift basin itself, offset slightly to the north compared to the main basin depocentre, likely related to the rifting processes. Velocities in the crust below the Ukrainian Shield, south of the Foldbelt, are in general higher than beneath the Voronezh Massif to the north. The Moho displays only slight topography around a depth of 40 km along the profile. (C) 2003 Elsevier B.V All rights reserved.

AB - The Donbas Foldbelt (DF) is the uplifted and deformed part of the up to 20-km-thick Dniepr-Donets Basin (DDB) that formed as the result of rifting of the East European Craton (EEC) in the Late Devonian. Uplift, especially of the southern margin of the basin, occurred in Early Permian times, in a (trans)tensional tectonic stress regime while folding and reverse faulting mainly occurred later-mainly during the Late Cretaceous. A seismic refraction/wide-angle reflection survey was carried out in 1999 (DOBREfraction'99) to complement existing Deep Seismic Sounding (DSS) data from the area that did not record significant Pn phase arrivals because of insufficient maximum offset. DOBREfraction'99 comprised some 245 recording stations along a line of 360 kin length with 11 in-line shot points as well as a 100 kin away, parallel 190 kin long subsidiary fan profile. The main profile runs between the shores of the Azov Sea in the south to the Ukraine-Russia border in the north, across the Azov Massif (Ukrainian Shield), the Foldbelt, and the Voronezh Massif Particular scientific targets include the nature of the crust-mantle transition and the geometry of crustal-upper mantle structures related to rifting and subsequent basin inversion. Tomographic inversion as well as ray-trace based velocity modelling has been carried out. The velocity signature of the sedimentary basin itself is well resolved, indicating an asymmetric form, with a steeper basement surface in the south than in the north, and a total thickness of about 20 km. A thick (>10 km) high velocity (>6.9 km/s) lower crustal body lies beneath the rift basin itself, offset slightly to the north compared to the main basin depocentre, likely related to the rifting processes. Velocities in the crust below the Ukrainian Shield, south of the Foldbelt, are in general higher than beneath the Voronezh Massif to the north. The Moho displays only slight topography around a depth of 40 km along the profile. (C) 2003 Elsevier B.V All rights reserved.

KW - Dniepr-Donets Basin

KW - Donbas Foldbelt

KW - intraplate deformation

KW - intracratonic rifling

KW - seismic refraction

KW - crustal and upper mantle structure

KW - DNIEPR-DONETS BASIN

KW - SYN-RIFT

KW - EVOLUTION

KW - 2-D

KW - HISTORY

KW - SEGMENT

KW - TROUGH

U2 - 10.1016/S0040-1951(03)00211-7

DO - 10.1016/S0040-1951(03)00211-7

M3 - Article

VL - 371

SP - 81

EP - 110

JO - Tectonophysics

JF - Tectonophysics

SN - 0040-1951

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