Description of the geological maps "Tromsø" and "Målselv", Troms I. The Precambrian window of Mauken-Andsfjell.
This paper is the first part of a description of the bedrock on the two 1:100 000 map sheets, \"Målselv\" and \"Tromsø\". The geological map \"Målselv\", accompanies the paper. This part deals with the \"window\" of Precambrian rocks exposed beneath the Caledo...
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1967
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ftnorgesgu:oai:openarchive.ngu.no:11250/2674855 2023-05-15T15:37:54+02:00 Description of the geological maps "Tromsø" and "Målselv", Troms I. The Precambrian window of Mauken-Andsfjell. Landmark, Kåre 14332 Målselv 15333 Takvatnet SØRREISA BARDU MÅLSELV 1967 application/pdf https://hdl.handle.net/11250/2674855 eng eng NGU (247) https://hdl.handle.net/11250/2674855 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 172-207 OMDANNET BERGART KARTLEGGING GRANODIORITT PETROGRAFI PREKAMBRIUM AMFIBOLITT Journal article 1967 ftnorgesgu 2022-07-03T15:26:39Z This paper is the first part of a description of the bedrock on the two 1:100 000 map sheets, \"Målselv\" and \"Tromsø\". The geological map \"Målselv\", accompanies the paper. This part deals with the \"window\" of Precambrian rocks exposed beneath the Caledonian nappes in Målselv, just N of latitude 69 N. The basement consists of mountainious areas that rise far above the surrounding Precambrian peneplane. These Precambrian rocks are composed of two main units, the Mauken amphibolite and the Andsfjellet granodiorite. The amphibolite is thought to be a meta-basalt. Chemical analyses indicate a \"normal\", relatively acid, basaltic composition. The analyses are compared to analyses of meta-basalts from other parts of the North Scandinavian Precambrian. The granodiorite is believed to be a product of a Precambrian granitisation. Chemical analyses of the granodiorite are given. It is shown to have an intrusive contact against the amphibolite. The junction between these two Precambiran units and the overlying schists is a pronounced thrust plane, which is a part of the Caledonian \"major thrust\". The question whether these basement outcrops formed actual mountains as early as in the Precambrian, ot whether they result from a Caledonian uplift is discussed, and the latter hypothesis is thought most likely. 34913 Article in Journal/Newspaper Bardu Målselv Sørreisa Tromsø Troms NGU Open Archive (Geological Survey of Norway) Bardu ENVELOPE(18.347,18.347,68.859,68.859) Målselv ENVELOPE(18.615,18.615,69.124,69.124) Mauken ENVELOPE(18.967,18.967,69.067,69.067) Sørreisa ENVELOPE(18.153,18.153,69.145,69.145) Takvatnet ENVELOPE(19.066,19.066,69.113,69.113) Tromsø |
institution |
Open Polar |
collection |
NGU Open Archive (Geological Survey of Norway) |
op_collection_id |
ftnorgesgu |
language |
English |
topic |
OMDANNET BERGART KARTLEGGING GRANODIORITT PETROGRAFI PREKAMBRIUM AMFIBOLITT |
spellingShingle |
OMDANNET BERGART KARTLEGGING GRANODIORITT PETROGRAFI PREKAMBRIUM AMFIBOLITT Landmark, Kåre Description of the geological maps "Tromsø" and "Målselv", Troms I. The Precambrian window of Mauken-Andsfjell. |
topic_facet |
OMDANNET BERGART KARTLEGGING GRANODIORITT PETROGRAFI PREKAMBRIUM AMFIBOLITT |
description |
This paper is the first part of a description of the bedrock on the two 1:100 000 map sheets, \"Målselv\" and \"Tromsø\". The geological map \"Målselv\", accompanies the paper. This part deals with the \"window\" of Precambrian rocks exposed beneath the Caledonian nappes in Målselv, just N of latitude 69 N. The basement consists of mountainious areas that rise far above the surrounding Precambrian peneplane. These Precambrian rocks are composed of two main units, the Mauken amphibolite and the Andsfjellet granodiorite. The amphibolite is thought to be a meta-basalt. Chemical analyses indicate a \"normal\", relatively acid, basaltic composition. The analyses are compared to analyses of meta-basalts from other parts of the North Scandinavian Precambrian. The granodiorite is believed to be a product of a Precambrian granitisation. Chemical analyses of the granodiorite are given. It is shown to have an intrusive contact against the amphibolite. The junction between these two Precambiran units and the overlying schists is a pronounced thrust plane, which is a part of the Caledonian \"major thrust\". The question whether these basement outcrops formed actual mountains as early as in the Precambrian, ot whether they result from a Caledonian uplift is discussed, and the latter hypothesis is thought most likely. 34913 |
format |
Article in Journal/Newspaper |
author |
Landmark, Kåre |
author_facet |
Landmark, Kåre |
author_sort |
Landmark, Kåre |
title |
Description of the geological maps "Tromsø" and "Målselv", Troms I. The Precambrian window of Mauken-Andsfjell. |
title_short |
Description of the geological maps "Tromsø" and "Målselv", Troms I. The Precambrian window of Mauken-Andsfjell. |
title_full |
Description of the geological maps "Tromsø" and "Målselv", Troms I. The Precambrian window of Mauken-Andsfjell. |
title_fullStr |
Description of the geological maps "Tromsø" and "Målselv", Troms I. The Precambrian window of Mauken-Andsfjell. |
title_full_unstemmed |
Description of the geological maps "Tromsø" and "Målselv", Troms I. The Precambrian window of Mauken-Andsfjell. |
title_sort |
description of the geological maps "tromsø" and "målselv", troms i. the precambrian window of mauken-andsfjell. |
publishDate |
1967 |
url |
https://hdl.handle.net/11250/2674855 |
op_coverage |
14332 Målselv 15333 Takvatnet SØRREISA BARDU MÅLSELV |
long_lat |
ENVELOPE(18.347,18.347,68.859,68.859) ENVELOPE(18.615,18.615,69.124,69.124) ENVELOPE(18.967,18.967,69.067,69.067) ENVELOPE(18.153,18.153,69.145,69.145) ENVELOPE(19.066,19.066,69.113,69.113) |
geographic |
Bardu Målselv Mauken Sørreisa Takvatnet Tromsø |
geographic_facet |
Bardu Målselv Mauken Sørreisa Takvatnet Tromsø |
genre |
Bardu Målselv Sørreisa Tromsø Troms |
genre_facet |
Bardu Målselv Sørreisa Tromsø Troms |
op_source |
172-207 |
op_relation |
NGU (247) https://hdl.handle.net/11250/2674855 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
_version_ |
1766368575078006784 |