Detailed geophysical investigations of the Stuoragurra postglacial fault, Finnmark, northern Norway.
The postglacial Stuoragurra Fault (SF) lies within the Mierujav'ri-Sværholt Fault Zone which is situated in the extensive Proterozoic terrain of Finnmark, northern Norway. It is a southeasterly dipping reverse fault and can be traced fairly continuously for 80 km from Skarrejav'ri south of...
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ftnorgesgu:oai:openarchive.ngu.no:11250/2666821 2023-05-15T16:13:37+02:00 Detailed geophysical investigations of the Stuoragurra postglacial fault, Finnmark, northern Norway. Olesen, O. Rønning, J.S. Mauring, E. Lile, O.B. Henkel, H. 19334 Masi 1991 application/pdf https://hdl.handle.net/11250/2666821 nor nor NGU-Rapport (90.160) urn:issn:0800-3416 https://hdl.handle.net/11250/2666821 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 35 ELEKTROMAGNETISK MÅLING BERGGRUNNSGEOLOGI FORKASTNING ELEKTRISK MÅLING SEISMIKK KVARTSITT Report 1991 ftnorgesgu 2022-07-03T15:27:08Z The postglacial Stuoragurra Fault (SF) lies within the Mierujav'ri-Sværholt Fault Zone which is situated in the extensive Proterozoic terrain of Finnmark, northern Norway. It is a southeasterly dipping reverse fault and can be traced fairly continuously for 80 km from Skarrejav'ri south of Masi to Lævnjasjåkka northeast of Iesjav'ri. Detailed geophysical investigations and drilling have been carried out in the Fidnajåkka area 10 km to the south of Masi. The geology of the area is dominated by quartzites. A c. 1 m thick layer of fault gouge detected it the drillholes is thought to represent the actual fault surface. Resistivity measurements reveal low-resistivity zones in the hanging-wall block as well as in the foot-wall block of the SF. These low-resistivity zones lie within a several hundred metre wide belt an are interpreted to be due to fracturing of the quartzites along the regional Mierujav'ri-Sværholt Fault Zone. Within the Fidnajåkka area, however, the resistivity of the hang- ing-wall. block of the SF is typically lower than in the foot-wall, indicating more intense fracturing in the hanging-wall. Vertical electrical soundings show a low-resistivity layer at depth in the eastern hanging-wall block, which corroborates other evidence that the fault dips to the southeast. 30415 Report Finnmark Northern Norway Finnmark NGU Open Archive (Geological Survey of Norway) Masi ENVELOPE(23.666,23.666,69.444,69.444) Norway Stuoragurra ENVELOPE(23.402,23.402,69.359,69.359) Sværholt ENVELOPE(26.684,26.684,70.962,70.962) |
institution |
Open Polar |
collection |
NGU Open Archive (Geological Survey of Norway) |
op_collection_id |
ftnorgesgu |
language |
Norwegian |
topic |
ELEKTROMAGNETISK MÅLING BERGGRUNNSGEOLOGI FORKASTNING ELEKTRISK MÅLING SEISMIKK KVARTSITT |
spellingShingle |
ELEKTROMAGNETISK MÅLING BERGGRUNNSGEOLOGI FORKASTNING ELEKTRISK MÅLING SEISMIKK KVARTSITT Olesen, O. Rønning, J.S. Mauring, E. Lile, O.B. Henkel, H. Detailed geophysical investigations of the Stuoragurra postglacial fault, Finnmark, northern Norway. |
topic_facet |
ELEKTROMAGNETISK MÅLING BERGGRUNNSGEOLOGI FORKASTNING ELEKTRISK MÅLING SEISMIKK KVARTSITT |
description |
The postglacial Stuoragurra Fault (SF) lies within the Mierujav'ri-Sværholt Fault Zone which is situated in the extensive Proterozoic terrain of Finnmark, northern Norway. It is a southeasterly dipping reverse fault and can be traced fairly continuously for 80 km from Skarrejav'ri south of Masi to Lævnjasjåkka northeast of Iesjav'ri. Detailed geophysical investigations and drilling have been carried out in the Fidnajåkka area 10 km to the south of Masi. The geology of the area is dominated by quartzites. A c. 1 m thick layer of fault gouge detected it the drillholes is thought to represent the actual fault surface. Resistivity measurements reveal low-resistivity zones in the hanging-wall block as well as in the foot-wall block of the SF. These low-resistivity zones lie within a several hundred metre wide belt an are interpreted to be due to fracturing of the quartzites along the regional Mierujav'ri-Sværholt Fault Zone. Within the Fidnajåkka area, however, the resistivity of the hang- ing-wall. block of the SF is typically lower than in the foot-wall, indicating more intense fracturing in the hanging-wall. Vertical electrical soundings show a low-resistivity layer at depth in the eastern hanging-wall block, which corroborates other evidence that the fault dips to the southeast. 30415 |
format |
Report |
author |
Olesen, O. Rønning, J.S. Mauring, E. Lile, O.B. Henkel, H. |
author_facet |
Olesen, O. Rønning, J.S. Mauring, E. Lile, O.B. Henkel, H. |
author_sort |
Olesen, O. |
title |
Detailed geophysical investigations of the Stuoragurra postglacial fault, Finnmark, northern Norway. |
title_short |
Detailed geophysical investigations of the Stuoragurra postglacial fault, Finnmark, northern Norway. |
title_full |
Detailed geophysical investigations of the Stuoragurra postglacial fault, Finnmark, northern Norway. |
title_fullStr |
Detailed geophysical investigations of the Stuoragurra postglacial fault, Finnmark, northern Norway. |
title_full_unstemmed |
Detailed geophysical investigations of the Stuoragurra postglacial fault, Finnmark, northern Norway. |
title_sort |
detailed geophysical investigations of the stuoragurra postglacial fault, finnmark, northern norway. |
publishDate |
1991 |
url |
https://hdl.handle.net/11250/2666821 |
op_coverage |
19334 Masi |
long_lat |
ENVELOPE(23.666,23.666,69.444,69.444) ENVELOPE(23.402,23.402,69.359,69.359) ENVELOPE(26.684,26.684,70.962,70.962) |
geographic |
Masi Norway Stuoragurra Sværholt |
geographic_facet |
Masi Norway Stuoragurra Sværholt |
genre |
Finnmark Northern Norway Finnmark |
genre_facet |
Finnmark Northern Norway Finnmark |
op_source |
35 |
op_relation |
NGU-Rapport (90.160) urn:issn:0800-3416 https://hdl.handle.net/11250/2666821 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
_version_ |
1765999402720165888 |