En petrografisk-mineralogisk undersøkelse i området syd for Majavann, spesielt granaters sammensetning under regional metamorfose.
The investigated area is situated in the Norwegian Caledonian orogenic belt, south of Majavann (Nordland county). The main rock types are micagneisses and garnet-mica-schists, cristalline limestones, granodioritic-gneisses, amphibolites, tremolite-schists, periodotite, trondhjemite and light coloure...
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ftnorgesgu:oai:openarchive.ngu.no:11250/2674824 2023-05-15T16:22:51+02:00 En petrografisk-mineralogisk undersøkelse i området syd for Majavann, spesielt granaters sammensetning under regional metamorfose. Nissen, August L. 18241 Namsskogan 19244 Røyrvik 19253 Majavatn RØYRVIK NAMSSKOGAN GRANE TRØNDELAG NORDLAND 1965 application/pdf https://hdl.handle.net/11250/2674824 nor nor NGU (234) https://hdl.handle.net/11250/2674824 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 103-159 OMDANNET BERGART MINERALOGI GEOKRONOLOGI PETROGRAFI KARTLEGGING OMDANNING Journal article 1965 ftnorgesgu 2022-07-03T15:26:05Z The investigated area is situated in the Norwegian Caledonian orogenic belt, south of Majavann (Nordland county). The main rock types are micagneisses and garnet-mica-schists, cristalline limestones, granodioritic-gneisses, amphibolites, tremolite-schists, periodotite, trondhjemite and light coloured granodiorite. The classification of Turner & Verhoogen (1960) is used. Both rocks of sedimentary and magmatic origin are regionally metamorphosed during the Caledonian orogeny. In the amphibolites, the plagioclases, which are in equilibrium with epidote, show an increasing An-content from west to east. It is highly possible that this indicates an increasing degree of metamorphism (fig. 7). It is concluded that a lower almandite-amphibolite facies metamorphism is valid for the investigated area. A more detailed subdivision based on the mineral paragenesis of the rocks is not possible. Anexception is presented by the staurolite-bearing garnet-muscovite-schist. An extensive investigation of the garnets has been carried out as it is believed that their composition is dependent on the degree of metamorphism. Thus a finer subdivision of metamorphic facies seems to be possible. The methods followed are described, and the results of the measurements are discussed. 35177 Article in Journal/Newspaper Grane Nordland Nordland Nordland NGU Open Archive (Geological Survey of Norway) Grane ENVELOPE(13.385,13.385,65.539,65.539) Majavatn ENVELOPE(13.368,13.368,65.164,65.164) Namsskogan ENVELOPE(12.846,12.846,64.740,64.740) |
institution |
Open Polar |
collection |
NGU Open Archive (Geological Survey of Norway) |
op_collection_id |
ftnorgesgu |
language |
Norwegian |
topic |
OMDANNET BERGART MINERALOGI GEOKRONOLOGI PETROGRAFI KARTLEGGING OMDANNING |
spellingShingle |
OMDANNET BERGART MINERALOGI GEOKRONOLOGI PETROGRAFI KARTLEGGING OMDANNING Nissen, August L. En petrografisk-mineralogisk undersøkelse i området syd for Majavann, spesielt granaters sammensetning under regional metamorfose. |
topic_facet |
OMDANNET BERGART MINERALOGI GEOKRONOLOGI PETROGRAFI KARTLEGGING OMDANNING |
description |
The investigated area is situated in the Norwegian Caledonian orogenic belt, south of Majavann (Nordland county). The main rock types are micagneisses and garnet-mica-schists, cristalline limestones, granodioritic-gneisses, amphibolites, tremolite-schists, periodotite, trondhjemite and light coloured granodiorite. The classification of Turner & Verhoogen (1960) is used. Both rocks of sedimentary and magmatic origin are regionally metamorphosed during the Caledonian orogeny. In the amphibolites, the plagioclases, which are in equilibrium with epidote, show an increasing An-content from west to east. It is highly possible that this indicates an increasing degree of metamorphism (fig. 7). It is concluded that a lower almandite-amphibolite facies metamorphism is valid for the investigated area. A more detailed subdivision based on the mineral paragenesis of the rocks is not possible. Anexception is presented by the staurolite-bearing garnet-muscovite-schist. An extensive investigation of the garnets has been carried out as it is believed that their composition is dependent on the degree of metamorphism. Thus a finer subdivision of metamorphic facies seems to be possible. The methods followed are described, and the results of the measurements are discussed. 35177 |
format |
Article in Journal/Newspaper |
author |
Nissen, August L. |
author_facet |
Nissen, August L. |
author_sort |
Nissen, August L. |
title |
En petrografisk-mineralogisk undersøkelse i området syd for Majavann, spesielt granaters sammensetning under regional metamorfose. |
title_short |
En petrografisk-mineralogisk undersøkelse i området syd for Majavann, spesielt granaters sammensetning under regional metamorfose. |
title_full |
En petrografisk-mineralogisk undersøkelse i området syd for Majavann, spesielt granaters sammensetning under regional metamorfose. |
title_fullStr |
En petrografisk-mineralogisk undersøkelse i området syd for Majavann, spesielt granaters sammensetning under regional metamorfose. |
title_full_unstemmed |
En petrografisk-mineralogisk undersøkelse i området syd for Majavann, spesielt granaters sammensetning under regional metamorfose. |
title_sort |
en petrografisk-mineralogisk undersøkelse i området syd for majavann, spesielt granaters sammensetning under regional metamorfose. |
publishDate |
1965 |
url |
https://hdl.handle.net/11250/2674824 |
op_coverage |
18241 Namsskogan 19244 Røyrvik 19253 Majavatn RØYRVIK NAMSSKOGAN GRANE TRØNDELAG NORDLAND |
long_lat |
ENVELOPE(13.385,13.385,65.539,65.539) ENVELOPE(13.368,13.368,65.164,65.164) ENVELOPE(12.846,12.846,64.740,64.740) |
geographic |
Grane Majavatn Namsskogan |
geographic_facet |
Grane Majavatn Namsskogan |
genre |
Grane Nordland Nordland Nordland |
genre_facet |
Grane Nordland Nordland Nordland |
op_source |
103-159 |
op_relation |
NGU (234) https://hdl.handle.net/11250/2674824 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
_version_ |
1766010976689192960 |