The Caledonian mountain chain of the Southern Troms and Ofoten areas. Part III. Structures and structural history.
The main lines of the structural geology of the area of about 13,000 km\u00B2 in the Caledonian mountain chain of Northern Norway are described. The major structure is characterized by nappes with a thrust front in the east above authochthonous Precambrian basement and Lower Cambrian sediments. The...
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ftnorgesgu:oai:openarchive.ngu.no:11250/2674950 2024-09-15T18:06:13+00:00 The Caledonian mountain chain of the Southern Troms and Ofoten areas. Part III. Structures and structural history. Gustavson, Magne 13324 Harstad 15322 Altevatn NORDLAND TROMS OG FINNMARK 14323 Gratangen 13313 Kjøpsvik 1972 application/pdf https://hdl.handle.net/11250/2674950 eng eng NGU (283) https://hdl.handle.net/11250/2674950 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no 1-56 + ka FORKASTNING FOLDNING KALEDONSKE FJELLKJEDE STRUKTURGEOLOGI PETROGRAFI KARTLEGGING Journal article 1972 ftnorgesgu 2024-08-09T03:02:50Z The main lines of the structural geology of the area of about 13,000 km\u00B2 in the Caledonian mountain chain of Northern Norway are described. The major structure is characterized by nappes with a thrust front in the east above authochthonous Precambrian basement and Lower Cambrian sediments. The discovery of basal-type psammitic rocks in the westernmost part of the area strengthens the opinion that the basal gneisses to the south and west of the Caledonian nappes consitute Precambrian basement. The basement took part in extensive folding and thrusting during the main Caledonian orogeny, but mobilization features are absent. The structural history can be summarized as follows: Early epeirogenic movements are indicated be the Elvenes (-Harstad-Evenskjær) conglomerate zone. The main Caledonian deformation commenced with an episode of isoclinal folding, F1 (in eastern areas an even earlier episode of isoclinal folding has been recognized by other workers), with an associated axial plane schistosity. Later deformation episodes produced open to tight folds but usually without the development of a new axial plane schistosity. Thrusting occurred during and after the first fold episode. 35248 Article in Journal/Newspaper Finnmark Gratangen Kjøpsvik Nordland Nordland Northern Norway Ofoten Finnmark Nordland Troms NGU Open Archive (Geological Survey of Norway) |
institution |
Open Polar |
collection |
NGU Open Archive (Geological Survey of Norway) |
op_collection_id |
ftnorgesgu |
language |
English |
topic |
FORKASTNING FOLDNING KALEDONSKE FJELLKJEDE STRUKTURGEOLOGI PETROGRAFI KARTLEGGING |
spellingShingle |
FORKASTNING FOLDNING KALEDONSKE FJELLKJEDE STRUKTURGEOLOGI PETROGRAFI KARTLEGGING Gustavson, Magne The Caledonian mountain chain of the Southern Troms and Ofoten areas. Part III. Structures and structural history. |
topic_facet |
FORKASTNING FOLDNING KALEDONSKE FJELLKJEDE STRUKTURGEOLOGI PETROGRAFI KARTLEGGING |
description |
The main lines of the structural geology of the area of about 13,000 km\u00B2 in the Caledonian mountain chain of Northern Norway are described. The major structure is characterized by nappes with a thrust front in the east above authochthonous Precambrian basement and Lower Cambrian sediments. The discovery of basal-type psammitic rocks in the westernmost part of the area strengthens the opinion that the basal gneisses to the south and west of the Caledonian nappes consitute Precambrian basement. The basement took part in extensive folding and thrusting during the main Caledonian orogeny, but mobilization features are absent. The structural history can be summarized as follows: Early epeirogenic movements are indicated be the Elvenes (-Harstad-Evenskjær) conglomerate zone. The main Caledonian deformation commenced with an episode of isoclinal folding, F1 (in eastern areas an even earlier episode of isoclinal folding has been recognized by other workers), with an associated axial plane schistosity. Later deformation episodes produced open to tight folds but usually without the development of a new axial plane schistosity. Thrusting occurred during and after the first fold episode. 35248 |
format |
Article in Journal/Newspaper |
author |
Gustavson, Magne |
author_facet |
Gustavson, Magne |
author_sort |
Gustavson, Magne |
title |
The Caledonian mountain chain of the Southern Troms and Ofoten areas. Part III. Structures and structural history. |
title_short |
The Caledonian mountain chain of the Southern Troms and Ofoten areas. Part III. Structures and structural history. |
title_full |
The Caledonian mountain chain of the Southern Troms and Ofoten areas. Part III. Structures and structural history. |
title_fullStr |
The Caledonian mountain chain of the Southern Troms and Ofoten areas. Part III. Structures and structural history. |
title_full_unstemmed |
The Caledonian mountain chain of the Southern Troms and Ofoten areas. Part III. Structures and structural history. |
title_sort |
caledonian mountain chain of the southern troms and ofoten areas. part iii. structures and structural history. |
publishDate |
1972 |
url |
https://hdl.handle.net/11250/2674950 |
op_coverage |
13324 Harstad 15322 Altevatn NORDLAND TROMS OG FINNMARK 14323 Gratangen 13313 Kjøpsvik |
genre |
Finnmark Gratangen Kjøpsvik Nordland Nordland Northern Norway Ofoten Finnmark Nordland Troms |
genre_facet |
Finnmark Gratangen Kjøpsvik Nordland Nordland Northern Norway Ofoten Finnmark Nordland Troms |
op_source |
1-56 + ka |
op_relation |
NGU (283) https://hdl.handle.net/11250/2674950 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
_version_ |
1810443712639008768 |