Complex lithospheric structure under the central Baltic Shield from surface wave tomography.
International audience [1] Regional seismic tomography provides valuable information on the structure of shields, thereby gaining insight to the formation and stabilization of old continents. Fennoscandia (known as the Baltic Shield for its exposed part) is a composite shield for which the last reco...
Published in: | Journal of Geophysical Research: Solid Earth |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2004
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Online Access: | https://hal.science/hal-00109927 https://hal.science/hal-00109927/document https://hal.science/hal-00109927/file/2003JB002947.pdf https://doi.org/10.1029/2003JB002947 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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ftinsu |
language |
English |
topic |
Structures Internes et Evolution comparée des planètes [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Structures Internes et Evolution comparée des planètes [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes Bruneton, M. Pedersen, Helle A. Farra, Véronique Arndt, Nicholas Vacher, P. Achauer, U. Alinaghi, A. Ansorge, J. Bock, G. Friederich, W. Grad, M. Guterch, A. Heikkinen, P. Hjelt, S. Hyvonen, T. Ikonen, J.P. Kissling, E. Komminaho, K. Korja, A. Kozlovskaya, E. Nevsky, M. Paulssen, H. Pavlenkova, N. Plomerova, J. Raita, T. Riznichenko, O.Y. Roberts, R. Sandoval, S. Sanina, I. Sharov, N. Shomali, Z. Tiikkainen, J. Wielandt, E. Wilegalla, K. Yliniemi, J. Yurov, Y. Complex lithospheric structure under the central Baltic Shield from surface wave tomography. |
topic_facet |
Structures Internes et Evolution comparée des planètes [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience [1] Regional seismic tomography provides valuable information on the structure of shields, thereby gaining insight to the formation and stabilization of old continents. Fennoscandia (known as the Baltic Shield for its exposed part) is a composite shield for which the last recorded tectonic event is the intrusion of the Rapakivi granitoids around 1.6 Ga. A seismic experiment carried out as part of the European project Svecofennian-Karelia-Lapland-Kola (SVEKALAPKO) was designed to study the upper mantle of the Finnish part of the Baltic Shield, especially the boundary between Archean and Proterozoic domains. We invert the fundamental mode Rayleigh waves to obtain a three-dimensional shear wave velocity model using a ray-based method accounting for the curvature of wave fronts. The experiment geometry allows an evaluation of lateral variations in velocities down to 150 km depth. The obtained model exhibits variations of up to ±3% in S wave velocities. As the thermal variations beneath Finland are very small, these lateral variations must be caused by different rock compositions. The lithospheres beneath the Archean and Proterozoic domains are not noticeably different in the S wave velocity maps. A classification of the velocity profiles with depth yields four main families and five intermediate regions that can be correlated with surface features. The comparison of these profiles with composition-based shear wave velocities implies both lateral and vertical variations of the mineralogy. INDEX TERMS: 7218 Seismology: Lithosphere and upper mantle; 7255 Seismology: Surface waves and free oscillations; 8180 Tectonophysics: Tomography; 9619 Information Related to Geologic Time: Precambrian; 1025 Geochemistry: Composition of the mantle; KEYWORDS: lithosphere, surface wave, Baltic Shield Citation: Bruneton, M., et al. (2004), Complex lithospheric structure under the central Baltic Shield from surface wave tomography |
author2 |
Laboratoire de Géophysique Interne et Tectonophysique (LGIT) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Laboratoire Central des Ponts et Chaussées (LCPC)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Géodynamique des Chaines Alpines (LGCA) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Planétologie et Géodynamique de Nantes UMR 6112 (LPGN) Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS) Ecole et Observatoire des sciences de la terre (EOST) Institut national des sciences de l'Univers (INSU - CNRS)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Bruneton, M. Pedersen, Helle A. Farra, Véronique Arndt, Nicholas Vacher, P. Achauer, U. Alinaghi, A. Ansorge, J. Bock, G. Friederich, W. Grad, M. Guterch, A. Heikkinen, P. Hjelt, S. Hyvonen, T. Ikonen, J.P. Kissling, E. Komminaho, K. Korja, A. Kozlovskaya, E. Nevsky, M. Paulssen, H. Pavlenkova, N. Plomerova, J. Raita, T. Riznichenko, O.Y. Roberts, R. Sandoval, S. Sanina, I. Sharov, N. Shomali, Z. Tiikkainen, J. Wielandt, E. Wilegalla, K. Yliniemi, J. Yurov, Y. |
author_facet |
Bruneton, M. Pedersen, Helle A. Farra, Véronique Arndt, Nicholas Vacher, P. Achauer, U. Alinaghi, A. Ansorge, J. Bock, G. Friederich, W. Grad, M. Guterch, A. Heikkinen, P. Hjelt, S. Hyvonen, T. Ikonen, J.P. Kissling, E. Komminaho, K. Korja, A. Kozlovskaya, E. Nevsky, M. Paulssen, H. Pavlenkova, N. Plomerova, J. Raita, T. Riznichenko, O.Y. Roberts, R. Sandoval, S. Sanina, I. Sharov, N. Shomali, Z. Tiikkainen, J. Wielandt, E. Wilegalla, K. Yliniemi, J. Yurov, Y. |
author_sort |
Bruneton, M. |
title |
Complex lithospheric structure under the central Baltic Shield from surface wave tomography. |
title_short |
Complex lithospheric structure under the central Baltic Shield from surface wave tomography. |
title_full |
Complex lithospheric structure under the central Baltic Shield from surface wave tomography. |
title_fullStr |
Complex lithospheric structure under the central Baltic Shield from surface wave tomography. |
title_full_unstemmed |
Complex lithospheric structure under the central Baltic Shield from surface wave tomography. |
title_sort |
complex lithospheric structure under the central baltic shield from surface wave tomography. |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.science/hal-00109927 https://hal.science/hal-00109927/document https://hal.science/hal-00109927/file/2003JB002947.pdf https://doi.org/10.1029/2003JB002947 |
genre |
Fennoscandia karelia* Lapland |
genre_facet |
Fennoscandia karelia* Lapland |
op_source |
ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://hal.science/hal-00109927 Journal of Geophysical Research : Solid Earth, 2004, 109 (B10) (B10), pp.B10303. ⟨10.1029/2003JB002947⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2003JB002947 hal-00109927 https://hal.science/hal-00109927 https://hal.science/hal-00109927/document https://hal.science/hal-00109927/file/2003JB002947.pdf doi:10.1029/2003JB002947 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2003JB002947 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
109 |
container_issue |
B10 |
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1797582526636621824 |
spelling |
ftinsu:oai:HAL:hal-00109927v1 2024-04-28T08:18:38+00:00 Complex lithospheric structure under the central Baltic Shield from surface wave tomography. Bruneton, M. Pedersen, Helle A. Farra, Véronique Arndt, Nicholas Vacher, P. Achauer, U. Alinaghi, A. Ansorge, J. Bock, G. Friederich, W. Grad, M. Guterch, A. Heikkinen, P. Hjelt, S. Hyvonen, T. Ikonen, J.P. Kissling, E. Komminaho, K. Korja, A. Kozlovskaya, E. Nevsky, M. Paulssen, H. Pavlenkova, N. Plomerova, J. Raita, T. Riznichenko, O.Y. Roberts, R. Sandoval, S. Sanina, I. Sharov, N. Shomali, Z. Tiikkainen, J. Wielandt, E. Wilegalla, K. Yliniemi, J. Yurov, Y. Laboratoire de Géophysique Interne et Tectonophysique (LGIT) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Laboratoire Central des Ponts et Chaussées (LCPC)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Géodynamique des Chaines Alpines (LGCA) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Planétologie et Géodynamique de Nantes UMR 6112 (LPGN) Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS) Ecole et Observatoire des sciences de la terre (EOST) Institut national des sciences de l'Univers (INSU - CNRS)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) 2004 https://hal.science/hal-00109927 https://hal.science/hal-00109927/document https://hal.science/hal-00109927/file/2003JB002947.pdf https://doi.org/10.1029/2003JB002947 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2003JB002947 hal-00109927 https://hal.science/hal-00109927 https://hal.science/hal-00109927/document https://hal.science/hal-00109927/file/2003JB002947.pdf doi:10.1029/2003JB002947 info:eu-repo/semantics/OpenAccess ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://hal.science/hal-00109927 Journal of Geophysical Research : Solid Earth, 2004, 109 (B10) (B10), pp.B10303. ⟨10.1029/2003JB002947⟩ Structures Internes et Evolution comparée des planètes [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2004 ftinsu https://doi.org/10.1029/2003JB002947 2024-04-05T00:41:30Z International audience [1] Regional seismic tomography provides valuable information on the structure of shields, thereby gaining insight to the formation and stabilization of old continents. Fennoscandia (known as the Baltic Shield for its exposed part) is a composite shield for which the last recorded tectonic event is the intrusion of the Rapakivi granitoids around 1.6 Ga. A seismic experiment carried out as part of the European project Svecofennian-Karelia-Lapland-Kola (SVEKALAPKO) was designed to study the upper mantle of the Finnish part of the Baltic Shield, especially the boundary between Archean and Proterozoic domains. We invert the fundamental mode Rayleigh waves to obtain a three-dimensional shear wave velocity model using a ray-based method accounting for the curvature of wave fronts. The experiment geometry allows an evaluation of lateral variations in velocities down to 150 km depth. The obtained model exhibits variations of up to ±3% in S wave velocities. As the thermal variations beneath Finland are very small, these lateral variations must be caused by different rock compositions. The lithospheres beneath the Archean and Proterozoic domains are not noticeably different in the S wave velocity maps. A classification of the velocity profiles with depth yields four main families and five intermediate regions that can be correlated with surface features. The comparison of these profiles with composition-based shear wave velocities implies both lateral and vertical variations of the mineralogy. INDEX TERMS: 7218 Seismology: Lithosphere and upper mantle; 7255 Seismology: Surface waves and free oscillations; 8180 Tectonophysics: Tomography; 9619 Information Related to Geologic Time: Precambrian; 1025 Geochemistry: Composition of the mantle; KEYWORDS: lithosphere, surface wave, Baltic Shield Citation: Bruneton, M., et al. (2004), Complex lithospheric structure under the central Baltic Shield from surface wave tomography Article in Journal/Newspaper Fennoscandia karelia* Lapland Institut national des sciences de l'Univers: HAL-INSU Journal of Geophysical Research: Solid Earth 109 B10 |