Harstad. Beskrivelse til det berggrunnsgeologiske gradteigskart M 8 - 1:100 000 (med fargetrykt kart)
From a structural point of view the bedrocks of the map area can be subdivided into 1. Precambrian basement (autochthonous), and 2. Allochthonous Caledonian units. The Caledonian sequence embraces a) The lowermost over-thrust units, b) The main unit (Harstad Nappe) and c) The upper units (Straumsbot...
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ftnorgesgu:oai:openarchive.ngu.no:11250/2674990 2023-05-15T13:25:33+02:00 Harstad. Beskrivelse til det berggrunnsgeologiske gradteigskart M 8 - 1:100 000 (med fargetrykt kart) Gustavson, Magne 13321 Andørja IBESTAD HARSTAD 13322 Astafjorden 13323 Tjeldsundet 13324 Harstad 1974 application/pdf https://hdl.handle.net/11250/2674990 nor nor NGU; Skrifter (309; 14) https://hdl.handle.net/11250/2674990 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 1-33 + ka STRATIGRAFI MALMGEOLOGI KARTLEGGING STRUKTURGEOLOGI GEOKRONOLOGI PETROGRAFI Journal article 1974 ftnorgesgu 2022-07-03T15:26:42Z From a structural point of view the bedrocks of the map area can be subdivided into 1. Precambrian basement (autochthonous), and 2. Allochthonous Caledonian units. The Caledonian sequence embraces a) The lowermost over-thrust units, b) The main unit (Harstad Nappe) and c) The upper units (Straumsbotn Nappe and Niingen (?) Nappe). The main unit belongs to the Seve-K\u00CEli Nappe Complex. The bedrock lithoogies within these units are briefly described. Metasediments, metamorphosed igneous intrusive rocks and possible metavolcanics (some amphibolite layers) are met with in the allochthounous sequence together with deformed Precambrian granite. Within the autochthonous Precambrian, granite and granitic gneiss predominate although meta-gabbro covers a large area in the northwestern part. Ore occurrences (magnetic ore, copper etc.) of the \"skarn type\" are connected with inclusions of metasediments (marble, mica schist etc.) in the Precambrian granite. The deformation history of the area can be subdivided into 3 episodes (F1, F2, F3) of which F1 and F2 are the most important ones. F1 resulted in mainly recumbent folds with an axial plane schistosity. This F1 schistosity is the regional schistosity now observed. 36202 Article in Journal/Newspaper Andørja Astafjorden Ibestad NGU Open Archive (Geological Survey of Norway) Ibestad ENVELOPE(17.177,17.177,68.779,68.779) Tjeldsundet ENVELOPE(16.394,16.394,68.560,68.560) Astafjorden ENVELOPE(17.109,17.109,68.728,68.728) Straumsbotn ENVELOPE(17.400,17.400,69.383,69.383) Andørja ENVELOPE(17.295,17.295,68.815,68.815) Niingen ENVELOPE(17.014,17.014,68.559,68.559) |
institution |
Open Polar |
collection |
NGU Open Archive (Geological Survey of Norway) |
op_collection_id |
ftnorgesgu |
language |
Norwegian |
topic |
STRATIGRAFI MALMGEOLOGI KARTLEGGING STRUKTURGEOLOGI GEOKRONOLOGI PETROGRAFI |
spellingShingle |
STRATIGRAFI MALMGEOLOGI KARTLEGGING STRUKTURGEOLOGI GEOKRONOLOGI PETROGRAFI Gustavson, Magne Harstad. Beskrivelse til det berggrunnsgeologiske gradteigskart M 8 - 1:100 000 (med fargetrykt kart) |
topic_facet |
STRATIGRAFI MALMGEOLOGI KARTLEGGING STRUKTURGEOLOGI GEOKRONOLOGI PETROGRAFI |
description |
From a structural point of view the bedrocks of the map area can be subdivided into 1. Precambrian basement (autochthonous), and 2. Allochthonous Caledonian units. The Caledonian sequence embraces a) The lowermost over-thrust units, b) The main unit (Harstad Nappe) and c) The upper units (Straumsbotn Nappe and Niingen (?) Nappe). The main unit belongs to the Seve-K\u00CEli Nappe Complex. The bedrock lithoogies within these units are briefly described. Metasediments, metamorphosed igneous intrusive rocks and possible metavolcanics (some amphibolite layers) are met with in the allochthounous sequence together with deformed Precambrian granite. Within the autochthonous Precambrian, granite and granitic gneiss predominate although meta-gabbro covers a large area in the northwestern part. Ore occurrences (magnetic ore, copper etc.) of the \"skarn type\" are connected with inclusions of metasediments (marble, mica schist etc.) in the Precambrian granite. The deformation history of the area can be subdivided into 3 episodes (F1, F2, F3) of which F1 and F2 are the most important ones. F1 resulted in mainly recumbent folds with an axial plane schistosity. This F1 schistosity is the regional schistosity now observed. 36202 |
format |
Article in Journal/Newspaper |
author |
Gustavson, Magne |
author_facet |
Gustavson, Magne |
author_sort |
Gustavson, Magne |
title |
Harstad. Beskrivelse til det berggrunnsgeologiske gradteigskart M 8 - 1:100 000 (med fargetrykt kart) |
title_short |
Harstad. Beskrivelse til det berggrunnsgeologiske gradteigskart M 8 - 1:100 000 (med fargetrykt kart) |
title_full |
Harstad. Beskrivelse til det berggrunnsgeologiske gradteigskart M 8 - 1:100 000 (med fargetrykt kart) |
title_fullStr |
Harstad. Beskrivelse til det berggrunnsgeologiske gradteigskart M 8 - 1:100 000 (med fargetrykt kart) |
title_full_unstemmed |
Harstad. Beskrivelse til det berggrunnsgeologiske gradteigskart M 8 - 1:100 000 (med fargetrykt kart) |
title_sort |
harstad. beskrivelse til det berggrunnsgeologiske gradteigskart m 8 - 1:100 000 (med fargetrykt kart) |
publishDate |
1974 |
url |
https://hdl.handle.net/11250/2674990 |
op_coverage |
13321 Andørja IBESTAD HARSTAD 13322 Astafjorden 13323 Tjeldsundet 13324 Harstad |
long_lat |
ENVELOPE(17.177,17.177,68.779,68.779) ENVELOPE(16.394,16.394,68.560,68.560) ENVELOPE(17.109,17.109,68.728,68.728) ENVELOPE(17.400,17.400,69.383,69.383) ENVELOPE(17.295,17.295,68.815,68.815) ENVELOPE(17.014,17.014,68.559,68.559) |
geographic |
Ibestad Tjeldsundet Astafjorden Straumsbotn Andørja Niingen |
geographic_facet |
Ibestad Tjeldsundet Astafjorden Straumsbotn Andørja Niingen |
genre |
Andørja Astafjorden Ibestad |
genre_facet |
Andørja Astafjorden Ibestad |
op_source |
1-33 + ka |
op_relation |
NGU; Skrifter (309; 14) https://hdl.handle.net/11250/2674990 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
_version_ |
1766386065189371904 |