dc.contributor.author | Torske, Tore | |
dc.coverage.spatial | TRØNDELAG | |
dc.coverage.spatial | MØRE OG ROMSDAL | |
dc.coverage.spatial | TROMS OG FINNMARK | |
dc.date.accessioned | 2020-08-26T13:15:39Z | |
dc.date.available | 2020-08-26T13:15:39Z | |
dc.date.issued | 1975 | |
dc.identifier.uri | https://hdl.handle.net/11250/2675035 | |
dc.description.abstract | 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. | |
dc.language.iso | eng | |
dc.relation.ispartofseries | NGU (322) | |
dc.rights | Navngivelse 4.0 Internasjonal | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | |
dc.subject | DRENERING | |
dc.subject | TERTIÆR | |
dc.subject | MESOZOIKUM | |
dc.subject | GEOMORFOLOGI | |
dc.title | Possible Mesozoic mantle plume activity beneath the continental margin of Norway. | |
dc.type | Journal article | |
dc.description.localcode | 34858 | |
dc.source.pagenumber | 73-90 | |