Lithosphere-asthenosphere system in shield areas of North America and Europe
In previous papers surface dispersion data have been combined with the results of deep seismic refraction data to derive a regionalization of the lithosphere-asthenosphere system and to investigate the presence of significant heterogeneity down to depths of 350 km along two profiles in the North Eur...
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Istituto Nazionale di Geofisica e Vulcanologia (INGV)
1997
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ftdoajarticles:oai:doaj.org/article:b11cf712f14945a89307b5bfeed31b6a 2023-05-15T16:12:01+02:00 Lithosphere-asthenosphere system in shield areas of North America and Europe P. Pierri V. Del Gaudio G. Calcagnile 1997-06-01T00:00:00Z https://doi.org/10.4401/ag-3850 https://doaj.org/article/b11cf712f14945a89307b5bfeed31b6a EN eng Istituto Nazionale di Geofisica e Vulcanologia (INGV) http://www.annalsofgeophysics.eu/index.php/annals/article/view/3850 https://doaj.org/toc/1593-5213 https://doaj.org/toc/2037-416X doi:10.4401/ag-3850 1593-5213 2037-416X https://doaj.org/article/b11cf712f14945a89307b5bfeed31b6a Annals of Geophysics, Vol 40, Iss 5 (1997) North America Fennoscandia shield lithosphere-asthenosphere surface waves Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 article 1997 ftdoajarticles https://doi.org/10.4401/ag-3850 2022-12-30T21:27:11Z In previous papers surface dispersion data have been combined with the results of deep seismic refraction data to derive a regionalization of the lithosphere-asthenosphere system and to investigate the presence of significant heterogeneity down to depths of 350 km along two profiles in the North European Fennoscandian area; a regionalized upper mantle model for the whole area down to more than 400 km is given as cross sections. We have extended that approach to North America. The older part of the shield shows lid thickness up to more than 100 km with, if any, weak shear velocity contrast to the underlying layer. The surrounding areas are characterized by a thinner lid; a stronger low-velocity zone to lid contrast may be found in peripheral areas. A map of the lithosphere-asthenosphere system has been derived, permitting a better regional resolution of the shear-wave velocity distribution with depth beneath different regions of North America. The correlation between the lithosphere-asthenosphere system structure and other geophysical data is commented as well as the results for North America and those obtained for the corresponding North European area, in order to outline the geophysical characteristics of shield areas that might give useful constraints for the geodynamic behaviour of the plates to which they belong. Article in Journal/Newspaper Fennoscandia Fennoscandian Directory of Open Access Journals: DOAJ Articles |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
North America Fennoscandia shield lithosphere-asthenosphere surface waves Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
North America Fennoscandia shield lithosphere-asthenosphere surface waves Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 P. Pierri V. Del Gaudio G. Calcagnile Lithosphere-asthenosphere system in shield areas of North America and Europe |
topic_facet |
North America Fennoscandia shield lithosphere-asthenosphere surface waves Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 |
description |
In previous papers surface dispersion data have been combined with the results of deep seismic refraction data to derive a regionalization of the lithosphere-asthenosphere system and to investigate the presence of significant heterogeneity down to depths of 350 km along two profiles in the North European Fennoscandian area; a regionalized upper mantle model for the whole area down to more than 400 km is given as cross sections. We have extended that approach to North America. The older part of the shield shows lid thickness up to more than 100 km with, if any, weak shear velocity contrast to the underlying layer. The surrounding areas are characterized by a thinner lid; a stronger low-velocity zone to lid contrast may be found in peripheral areas. A map of the lithosphere-asthenosphere system has been derived, permitting a better regional resolution of the shear-wave velocity distribution with depth beneath different regions of North America. The correlation between the lithosphere-asthenosphere system structure and other geophysical data is commented as well as the results for North America and those obtained for the corresponding North European area, in order to outline the geophysical characteristics of shield areas that might give useful constraints for the geodynamic behaviour of the plates to which they belong. |
format |
Article in Journal/Newspaper |
author |
P. Pierri V. Del Gaudio G. Calcagnile |
author_facet |
P. Pierri V. Del Gaudio G. Calcagnile |
author_sort |
P. Pierri |
title |
Lithosphere-asthenosphere system in shield areas of North America and Europe |
title_short |
Lithosphere-asthenosphere system in shield areas of North America and Europe |
title_full |
Lithosphere-asthenosphere system in shield areas of North America and Europe |
title_fullStr |
Lithosphere-asthenosphere system in shield areas of North America and Europe |
title_full_unstemmed |
Lithosphere-asthenosphere system in shield areas of North America and Europe |
title_sort |
lithosphere-asthenosphere system in shield areas of north america and europe |
publisher |
Istituto Nazionale di Geofisica e Vulcanologia (INGV) |
publishDate |
1997 |
url |
https://doi.org/10.4401/ag-3850 https://doaj.org/article/b11cf712f14945a89307b5bfeed31b6a |
genre |
Fennoscandia Fennoscandian |
genre_facet |
Fennoscandia Fennoscandian |
op_source |
Annals of Geophysics, Vol 40, Iss 5 (1997) |
op_relation |
http://www.annalsofgeophysics.eu/index.php/annals/article/view/3850 https://doaj.org/toc/1593-5213 https://doaj.org/toc/2037-416X doi:10.4401/ag-3850 1593-5213 2037-416X https://doaj.org/article/b11cf712f14945a89307b5bfeed31b6a |
op_doi |
https://doi.org/10.4401/ag-3850 |
_version_ |
1765997244635414528 |