“DOBREfraction'99”—velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine)
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| Title: | “DOBREfraction'99”—velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine) |
|---|---|
| Authors: | Grad, M.1, Gryn', D.2, Guterch, A.3, Janik, T.3, Keller, R.4, Lang, R.5, Lyngsie, S.B.5, Omelchenko, V.2, Starostenko, V.I.2, Stephenson, R.A.6 randell.stephenson@falw.vu.nl, Stovba, S.M.7, Thybo, H.5, Tolkunov, A.7 |
| Source: | Tectonophysics. Aug2003, Vol. 371 Issue 1-4, p81. 30p. |
| Subjects: | Cratons, Plate tectonics, Surface of the earth, Geology |
| 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 km length with 11 in-line shot points as well as a 100 km away, parallel 190 km 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. [Copyright &y& Elsevier] |
| Copyright of Tectonophysics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 10504235 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: “DOBREfraction'99”—velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine) – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Grad%2C+M%2E%22">Grad, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Gryn'%2C+D%2E%22">Gryn', D.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Guterch%2C+A%2E%22">Guterch, A.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Janik%2C+T%2E%22">Janik, T.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Keller%2C+R%2E%22">Keller, R.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Lang%2C+R%2E%22">Lang, R.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Lyngsie%2C+S%2EB%2E%22">Lyngsie, S.B.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Omelchenko%2C+V%2E%22">Omelchenko, V.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Starostenko%2C+V%2EI%2E%22">Starostenko, V.I.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Stephenson%2C+R%2EA%2E%22">Stephenson, R.A.</searchLink><relatesTo>6</relatesTo><i> randell.stephenson@falw.vu.nl</i><br /><searchLink fieldCode="AR" term="%22Stovba%2C+S%2EM%2E%22">Stovba, S.M.</searchLink><relatesTo>7</relatesTo><br /><searchLink fieldCode="AR" term="%22Thybo%2C+H%2E%22">Thybo, H.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Tolkunov%2C+A%2E%22">Tolkunov, A.</searchLink><relatesTo>7</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Tectonophysics%22">Tectonophysics</searchLink>. Aug2003, Vol. 371 Issue 1-4, p81. 30p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Cratons%22">Cratons</searchLink><br /><searchLink fieldCode="DE" term="%22Plate+tectonics%22">Plate tectonics</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+of+the+earth%22">Surface of the earth</searchLink><br /><searchLink fieldCode="DE" term="%22Geology%22">Geology</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: 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 km length with 11 in-line shot points as well as a 100 km away, parallel 190 km 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. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Tectonophysics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/S0040-1951(03)00211-7 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 30 StartPage: 81 Subjects: – SubjectFull: Cratons Type: general – SubjectFull: Plate tectonics Type: general – SubjectFull: Surface of the earth Type: general – SubjectFull: Geology Type: general Titles: – TitleFull: “DOBREfraction'99”—velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine) Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Grad, M. – PersonEntity: Name: NameFull: Gryn', D. – PersonEntity: Name: NameFull: Guterch, A. – PersonEntity: Name: NameFull: Janik, T. – PersonEntity: Name: NameFull: Keller, R. – PersonEntity: Name: NameFull: Lang, R. – PersonEntity: Name: NameFull: Lyngsie, S.B. – PersonEntity: Name: NameFull: Omelchenko, V. – PersonEntity: Name: NameFull: Starostenko, V.I. – PersonEntity: Name: NameFull: Stephenson, R.A. – PersonEntity: Name: NameFull: Stovba, S.M. – PersonEntity: Name: NameFull: Thybo, H. – PersonEntity: Name: NameFull: Tolkunov, A. IsPartOfRelationships: – BibEntity: Dates: – D: 14 M: 08 Text: Aug2003 Type: published Y: 2003 Identifiers: – Type: issn-print Value: 00401951 Numbering: – Type: volume Value: 371 – Type: issue Value: 1-4 Titles: – TitleFull: Tectonophysics Type: main |
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