Seismic model of the Earth's crust and upper mantle beneath the Fennoscandian Shield
Well-founded concepts of the crust and upper mantle structure of the Fennoscandian Shield were developed. Quantitative evidence for horizontal and vertical lithospheric heterogeneities was obtained. Highly detailed integrated geological and geophysical investigations, supported by superdeep drilling...
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EDP Sciences
2023
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ftdoajarticles:oai:doaj.org/article:71a96454a7044b55acb093212cbff9cb 2023-05-15T16:12:51+02:00 Seismic model of the Earth's crust and upper mantle beneath the Fennoscandian Shield Lebedev Artem Sharov Nikolay 2023-01-01T00:00:00Z https://doi.org/10.1051/e3sconf/202337101089 https://doaj.org/article/71a96454a7044b55acb093212cbff9cb EN FR eng fre EDP Sciences https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/08/e3sconf_afe2023_01089.pdf https://doaj.org/toc/2267-1242 2267-1242 doi:10.1051/e3sconf/202337101089 https://doaj.org/article/71a96454a7044b55acb093212cbff9cb E3S Web of Conferences, Vol 371, p 01089 (2023) Environmental sciences GE1-350 article 2023 ftdoajarticles https://doi.org/10.1051/e3sconf/202337101089 2023-03-12T01:32:06Z Well-founded concepts of the crust and upper mantle structure of the Fennoscandian Shield were developed. Quantitative evidence for horizontal and vertical lithospheric heterogeneities was obtained. Highly detailed integrated geological and geophysical investigations, supported by superdeep drilling, have been conducted in the eastern part of the shield in recent years. Seismogeological crustal models of individual geotectonic provinces were constructed, which indicate that the structure of the crystalline crust displays a pattern of blocks, arranged hierarchically, with no persistent seismic boundaries across the entire shield. Both low- and high-velocity zones, correlatable with geological bodies, occur locally. The structural plans of contours and the velocities of various deep sections were shown to be inconsistent. We conclude that the upper mantle is laterally complex and heterogeneous, and that there is no asthenosphere in the classical sense of the word. Article in Journal/Newspaper Fennoscandian Directory of Open Access Journals: DOAJ Articles E3S Web of Conferences 371 01089 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
Environmental sciences GE1-350 |
spellingShingle |
Environmental sciences GE1-350 Lebedev Artem Sharov Nikolay Seismic model of the Earth's crust and upper mantle beneath the Fennoscandian Shield |
topic_facet |
Environmental sciences GE1-350 |
description |
Well-founded concepts of the crust and upper mantle structure of the Fennoscandian Shield were developed. Quantitative evidence for horizontal and vertical lithospheric heterogeneities was obtained. Highly detailed integrated geological and geophysical investigations, supported by superdeep drilling, have been conducted in the eastern part of the shield in recent years. Seismogeological crustal models of individual geotectonic provinces were constructed, which indicate that the structure of the crystalline crust displays a pattern of blocks, arranged hierarchically, with no persistent seismic boundaries across the entire shield. Both low- and high-velocity zones, correlatable with geological bodies, occur locally. The structural plans of contours and the velocities of various deep sections were shown to be inconsistent. We conclude that the upper mantle is laterally complex and heterogeneous, and that there is no asthenosphere in the classical sense of the word. |
format |
Article in Journal/Newspaper |
author |
Lebedev Artem Sharov Nikolay |
author_facet |
Lebedev Artem Sharov Nikolay |
author_sort |
Lebedev Artem |
title |
Seismic model of the Earth's crust and upper mantle beneath the Fennoscandian Shield |
title_short |
Seismic model of the Earth's crust and upper mantle beneath the Fennoscandian Shield |
title_full |
Seismic model of the Earth's crust and upper mantle beneath the Fennoscandian Shield |
title_fullStr |
Seismic model of the Earth's crust and upper mantle beneath the Fennoscandian Shield |
title_full_unstemmed |
Seismic model of the Earth's crust and upper mantle beneath the Fennoscandian Shield |
title_sort |
seismic model of the earth's crust and upper mantle beneath the fennoscandian shield |
publisher |
EDP Sciences |
publishDate |
2023 |
url |
https://doi.org/10.1051/e3sconf/202337101089 https://doaj.org/article/71a96454a7044b55acb093212cbff9cb |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_source |
E3S Web of Conferences, Vol 371, p 01089 (2023) |
op_relation |
https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/08/e3sconf_afe2023_01089.pdf https://doaj.org/toc/2267-1242 2267-1242 doi:10.1051/e3sconf/202337101089 https://doaj.org/article/71a96454a7044b55acb093212cbff9cb |
op_doi |
https://doi.org/10.1051/e3sconf/202337101089 |
container_title |
E3S Web of Conferences |
container_volume |
371 |
container_start_page |
01089 |
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1765998460856696832 |