Karasjokgrønnsteinbeltet. Regional geofysisk og geologisk tolkning
A geophysical interpretation of geological structures within 5 map-sheets in 1:50,000 scale (AMS M711) has been done. Petrophysical properties of 1350 rock samples and about 11000 in situ susceptibility measurements have been analyzed. The interpretation is based on all available information includi...
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ftnorgesgu:oai:openarchive.ngu.no:11250/2674397 2023-05-15T16:12:04+02:00 Karasjokgrønnsteinbeltet. Regional geofysisk og geologisk tolkning Midtun, Reidar Devold KARASJOK 20331 Karasjok KAUTOKEINO 20342 Iddjajav'ri 20334 Iesjåkka 20333 Bæivasgiedde 20332 Galmatskai'di 1988 application/pdf https://hdl.handle.net/11250/2674397 eng eng Skrifter (88) https://hdl.handle.net/11250/2674397 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 19 Book 1988 ftnorgesgu 2022-07-03T15:26:00Z A geophysical interpretation of geological structures within 5 map-sheets in 1:50,000 scale (AMS M711) has been done. Petrophysical properties of 1350 rock samples and about 11000 in situ susceptibility measurements have been analyzed. The interpretation is based on all available information including geological and petrophysical data, low altitude magnetic and electromagnetic measurements and gravimetric data. The aeromagnetic interpretation includes a magnetic structure map showing patterns, contacts, magnetization levels and dip estimations. From this map the outcropping of the tectonostratigraphic units and the internal layering can be seen. An interpretation of magnetic dislocations together with a topografic lineament study has been made, revealing 3 directions of dislocation maxima, NE, E and NV. The Ne-direction is thought to be the youngest. Thrusts are also detected from the magnetic data. Detailed gravimetric interpretations have been made along 5 profiles. These model calculation show alternating culmination and depressions with a maximum depth to basement being 4 km. By combining the magnetic and gravimetric interpretation . The map shows two foldsystems, NNe and ESE. The oldest NNE-system is thought to be connected with suturing in this area. These two interfering fold systems are producing 4-5 km deep synclinorias separated by shallow basement-ridges within the Karasjok Greenstone Belt. A regional gravimetric model calculation crossing the Precambrian terrain of the Northern Fennoscandia has been made. This interpretation supports the theory of a suture between the Karasjok Greenstone Belt and Levajok Granulite Belt. 35766 Book Fennoscandia Karasjok Kautokeino NGU Open Archive (Geological Survey of Norway) Kautokeino ENVELOPE(23.048,23.048,69.003,69.003) Karasjok ENVELOPE(25.519,25.519,69.472,69.472) Levajok ENVELOPE(26.453,26.453,69.934,69.934) |
institution |
Open Polar |
collection |
NGU Open Archive (Geological Survey of Norway) |
op_collection_id |
ftnorgesgu |
language |
English |
description |
A geophysical interpretation of geological structures within 5 map-sheets in 1:50,000 scale (AMS M711) has been done. Petrophysical properties of 1350 rock samples and about 11000 in situ susceptibility measurements have been analyzed. The interpretation is based on all available information including geological and petrophysical data, low altitude magnetic and electromagnetic measurements and gravimetric data. The aeromagnetic interpretation includes a magnetic structure map showing patterns, contacts, magnetization levels and dip estimations. From this map the outcropping of the tectonostratigraphic units and the internal layering can be seen. An interpretation of magnetic dislocations together with a topografic lineament study has been made, revealing 3 directions of dislocation maxima, NE, E and NV. The Ne-direction is thought to be the youngest. Thrusts are also detected from the magnetic data. Detailed gravimetric interpretations have been made along 5 profiles. These model calculation show alternating culmination and depressions with a maximum depth to basement being 4 km. By combining the magnetic and gravimetric interpretation . The map shows two foldsystems, NNe and ESE. The oldest NNE-system is thought to be connected with suturing in this area. These two interfering fold systems are producing 4-5 km deep synclinorias separated by shallow basement-ridges within the Karasjok Greenstone Belt. A regional gravimetric model calculation crossing the Precambrian terrain of the Northern Fennoscandia has been made. This interpretation supports the theory of a suture between the Karasjok Greenstone Belt and Levajok Granulite Belt. 35766 |
format |
Book |
author |
Midtun, Reidar Devold |
spellingShingle |
Midtun, Reidar Devold Karasjokgrønnsteinbeltet. Regional geofysisk og geologisk tolkning |
author_facet |
Midtun, Reidar Devold |
author_sort |
Midtun, Reidar Devold |
title |
Karasjokgrønnsteinbeltet. Regional geofysisk og geologisk tolkning |
title_short |
Karasjokgrønnsteinbeltet. Regional geofysisk og geologisk tolkning |
title_full |
Karasjokgrønnsteinbeltet. Regional geofysisk og geologisk tolkning |
title_fullStr |
Karasjokgrønnsteinbeltet. Regional geofysisk og geologisk tolkning |
title_full_unstemmed |
Karasjokgrønnsteinbeltet. Regional geofysisk og geologisk tolkning |
title_sort |
karasjokgrønnsteinbeltet. regional geofysisk og geologisk tolkning |
publishDate |
1988 |
url |
https://hdl.handle.net/11250/2674397 |
op_coverage |
KARASJOK 20331 Karasjok KAUTOKEINO 20342 Iddjajav'ri 20334 Iesjåkka 20333 Bæivasgiedde 20332 Galmatskai'di |
long_lat |
ENVELOPE(23.048,23.048,69.003,69.003) ENVELOPE(25.519,25.519,69.472,69.472) ENVELOPE(26.453,26.453,69.934,69.934) |
geographic |
Kautokeino Karasjok Levajok |
geographic_facet |
Kautokeino Karasjok Levajok |
genre |
Fennoscandia Karasjok Kautokeino |
genre_facet |
Fennoscandia Karasjok Kautokeino |
op_source |
19 |
op_relation |
Skrifter (88) https://hdl.handle.net/11250/2674397 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
_version_ |
1765997306919780352 |