Possible Mesozoic mantle plume activity beneath the continental margin of Norway.
Based on recent geological and geophysical information from the Norwegian\/Greenland Sea and North Sea areas, and on earlier geomorphological information interpreted in terms of regional drainage pattern evolution, it is concluded that the Møre-Jotunheimen and Norrbotten-Troms uplands may be erosion...
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1975
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ftnorgesgu:oai:openarchive.ngu.no:11250/2675035 2023-05-15T16:13:39+02:00 Possible Mesozoic mantle plume activity beneath the continental margin of Norway. Torske, Tore TRØNDELAG MØRE OG ROMSDAL TROMS OG FINNMARK 1975 application/pdf https://hdl.handle.net/11250/2675035 eng eng NGU (322) https://hdl.handle.net/11250/2675035 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 73-90 DRENERING TERTIÆR MESOZOIKUM GEOMORFOLOGI Journal article 1975 ftnorgesgu 2022-07-03T15:27:22Z Based on recent geological and geophysical information from the Norwegian\/Greenland Sea and North Sea areas, and on earlier geomorphological information interpreted in terms of regional drainage pattern evolution, it is concluded that the Møre-Jotunheimen and Norrbotten-Troms uplands may be erosional remnants of two large, pre-Tertiary, mantle plume-generated domal uplifts. These were centred on the adjacent parts of the present continental shelf and slope, where linear gravity highs and elongate sedimentary troughs may represent mantle plume-generated mafic intrusions and rifts. The mantle plume activity probably occurred in mesozoic time, possibly in the Jurassic, long before the onset of Early Tertiary ocean-floor spreading in the Norwegian\/Greenland Sea area. The inferred rifts and intrusions appear to form a northern extension of pre-splitting tectonic activity along the present North American and north-west European Atlantic margin. 34858 Article in Journal/Newspaper Finnmark Greenland Greenland Sea Finnmark Norrbotten Troms NGU Open Archive (Geological Survey of Norway) Greenland Norway Troms og Finnmark ENVELOPE(23.712,23.712,69.724,69.724) |
institution |
Open Polar |
collection |
NGU Open Archive (Geological Survey of Norway) |
op_collection_id |
ftnorgesgu |
language |
English |
topic |
DRENERING TERTIÆR MESOZOIKUM GEOMORFOLOGI |
spellingShingle |
DRENERING TERTIÆR MESOZOIKUM GEOMORFOLOGI Torske, Tore Possible Mesozoic mantle plume activity beneath the continental margin of Norway. |
topic_facet |
DRENERING TERTIÆR MESOZOIKUM GEOMORFOLOGI |
description |
Based on recent geological and geophysical information from the Norwegian\/Greenland Sea and North Sea areas, and on earlier geomorphological information interpreted in terms of regional drainage pattern evolution, it is concluded that the Møre-Jotunheimen and Norrbotten-Troms uplands may be erosional remnants of two large, pre-Tertiary, mantle plume-generated domal uplifts. These were centred on the adjacent parts of the present continental shelf and slope, where linear gravity highs and elongate sedimentary troughs may represent mantle plume-generated mafic intrusions and rifts. The mantle plume activity probably occurred in mesozoic time, possibly in the Jurassic, long before the onset of Early Tertiary ocean-floor spreading in the Norwegian\/Greenland Sea area. The inferred rifts and intrusions appear to form a northern extension of pre-splitting tectonic activity along the present North American and north-west European Atlantic margin. 34858 |
format |
Article in Journal/Newspaper |
author |
Torske, Tore |
author_facet |
Torske, Tore |
author_sort |
Torske, Tore |
title |
Possible Mesozoic mantle plume activity beneath the continental margin of Norway. |
title_short |
Possible Mesozoic mantle plume activity beneath the continental margin of Norway. |
title_full |
Possible Mesozoic mantle plume activity beneath the continental margin of Norway. |
title_fullStr |
Possible Mesozoic mantle plume activity beneath the continental margin of Norway. |
title_full_unstemmed |
Possible Mesozoic mantle plume activity beneath the continental margin of Norway. |
title_sort |
possible mesozoic mantle plume activity beneath the continental margin of norway. |
publishDate |
1975 |
url |
https://hdl.handle.net/11250/2675035 |
op_coverage |
TRØNDELAG MØRE OG ROMSDAL TROMS OG FINNMARK |
long_lat |
ENVELOPE(23.712,23.712,69.724,69.724) |
geographic |
Greenland Norway Troms og Finnmark |
geographic_facet |
Greenland Norway Troms og Finnmark |
genre |
Finnmark Greenland Greenland Sea Finnmark Norrbotten Troms |
genre_facet |
Finnmark Greenland Greenland Sea Finnmark Norrbotten Troms |
op_source |
73-90 |
op_relation |
NGU (322) https://hdl.handle.net/11250/2675035 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
_version_ |
1765999464625995776 |