The Early Proterozoic Karasjok Greenstone Belt, Norway. A preliminary description of lithology, stratigraphy and mineralization.

The Karasjok Greenstone Belt of Finnmark, Norway, is a sequence of medium-grademetmorphic supracrustal rocks in the northernmost part of the Baltic Shield.Regional mapping has revealed a tectonostratigraphy with the greenstone beltresting on Archaean sialic basement, dipping away under the Tanaelv M...

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Main Author: Often, Morten
Format: Article in Journal/Newspaper
Language:English
Published: 1985
Subjects:
Online Access:https://hdl.handle.net/11250/2674246
id ftnorgesgu:oai:openarchive.ngu.no:11250/2674246
record_format openpolar
spelling ftnorgesgu:oai:openarchive.ngu.no:11250/2674246 2023-05-15T16:13:41+02:00 The Early Proterozoic Karasjok Greenstone Belt, Norway. A preliminary description of lithology, stratigraphy and mineralization. Often, Morten 20344 Skoganvarre 20343 Stiipanav'zi 20342 Iddjajav'ri 20353 Lakselv 20354 Billefjord 20341 Hal'kavarri 20334 Iesjákka 20333 Bæivasgiedde 20332 Galmatskai'di 20331 Karasjok KARASJOK PORSANGER 1985 application/pdf https://hdl.handle.net/11250/2674246 eng eng NGU Bulletin (403) https://hdl.handle.net/11250/2674246 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 75-88 PREKAMBRIUM STRATIGRAFI LITOLOGI GRØNNSTEIN MINERALISERING MALMGEOLOGI Journal article 1985 ftnorgesgu 2022-07-03T15:26:42Z The Karasjok Greenstone Belt of Finnmark, Norway, is a sequence of medium-grademetmorphic supracrustal rocks in the northernmost part of the Baltic Shield.Regional mapping has revealed a tectonostratigraphy with the greenstone beltresting on Archaean sialic basement, dipping away under the Tanaelv MigmaticComplex with the Levajok Granulite Complex on top. Major thrust zones separatethe lowermost part of the greenstone belt, the clastic Skuvvanvarri Formation,from the mixed volcanic-sedimentary Iddjajav'ri Group. High grade thrust zonesalso separate the migmatic and granulitic complexes feom the greenstone belt.Pyroclastic komatiites constitute an important part of the Issjaja'ri Group,suggesting volcanism in a shallow-water environment. A plate-tectonic conceptis applied to describe the evolution of the greenstone belt which is probablyof Earth to Middle Proterozoic age. Mineralizations within the Karasjok Green-stone Belt are classified and briefly described. Thw two most important typesare manganiferous banded iron-formations of Algoma type and large low-gradedisseminated copper-gold mineralizations of uncertain origin. 36100 Article in Journal/Newspaper Finnmark Karasjok Lakselv Porsanger Finnmark NGU Open Archive (Geological Survey of Norway) Norway Karasjok ENVELOPE(25.519,25.519,69.472,69.472) Porsanger ENVELOPE(24.956,24.956,70.052,70.052) Levajok ENVELOPE(26.453,26.453,69.934,69.934) Skoganvarre ENVELOPE(25.078,25.078,69.840,69.840) Skuvvanvarri ENVELOPE(25.094,25.094,69.813,69.813)
institution Open Polar
collection NGU Open Archive (Geological Survey of Norway)
op_collection_id ftnorgesgu
language English
topic PREKAMBRIUM
STRATIGRAFI
LITOLOGI
GRØNNSTEIN
MINERALISERING
MALMGEOLOGI
spellingShingle PREKAMBRIUM
STRATIGRAFI
LITOLOGI
GRØNNSTEIN
MINERALISERING
MALMGEOLOGI
Often, Morten
The Early Proterozoic Karasjok Greenstone Belt, Norway. A preliminary description of lithology, stratigraphy and mineralization.
topic_facet PREKAMBRIUM
STRATIGRAFI
LITOLOGI
GRØNNSTEIN
MINERALISERING
MALMGEOLOGI
description The Karasjok Greenstone Belt of Finnmark, Norway, is a sequence of medium-grademetmorphic supracrustal rocks in the northernmost part of the Baltic Shield.Regional mapping has revealed a tectonostratigraphy with the greenstone beltresting on Archaean sialic basement, dipping away under the Tanaelv MigmaticComplex with the Levajok Granulite Complex on top. Major thrust zones separatethe lowermost part of the greenstone belt, the clastic Skuvvanvarri Formation,from the mixed volcanic-sedimentary Iddjajav'ri Group. High grade thrust zonesalso separate the migmatic and granulitic complexes feom the greenstone belt.Pyroclastic komatiites constitute an important part of the Issjaja'ri Group,suggesting volcanism in a shallow-water environment. A plate-tectonic conceptis applied to describe the evolution of the greenstone belt which is probablyof Earth to Middle Proterozoic age. Mineralizations within the Karasjok Green-stone Belt are classified and briefly described. Thw two most important typesare manganiferous banded iron-formations of Algoma type and large low-gradedisseminated copper-gold mineralizations of uncertain origin. 36100
format Article in Journal/Newspaper
author Often, Morten
author_facet Often, Morten
author_sort Often, Morten
title The Early Proterozoic Karasjok Greenstone Belt, Norway. A preliminary description of lithology, stratigraphy and mineralization.
title_short The Early Proterozoic Karasjok Greenstone Belt, Norway. A preliminary description of lithology, stratigraphy and mineralization.
title_full The Early Proterozoic Karasjok Greenstone Belt, Norway. A preliminary description of lithology, stratigraphy and mineralization.
title_fullStr The Early Proterozoic Karasjok Greenstone Belt, Norway. A preliminary description of lithology, stratigraphy and mineralization.
title_full_unstemmed The Early Proterozoic Karasjok Greenstone Belt, Norway. A preliminary description of lithology, stratigraphy and mineralization.
title_sort early proterozoic karasjok greenstone belt, norway. a preliminary description of lithology, stratigraphy and mineralization.
publishDate 1985
url https://hdl.handle.net/11250/2674246
op_coverage 20344 Skoganvarre
20343 Stiipanav'zi
20342 Iddjajav'ri
20353 Lakselv
20354 Billefjord
20341 Hal'kavarri
20334 Iesjákka
20333 Bæivasgiedde
20332 Galmatskai'di
20331 Karasjok
KARASJOK
PORSANGER
long_lat ENVELOPE(25.519,25.519,69.472,69.472)
ENVELOPE(24.956,24.956,70.052,70.052)
ENVELOPE(26.453,26.453,69.934,69.934)
ENVELOPE(25.078,25.078,69.840,69.840)
ENVELOPE(25.094,25.094,69.813,69.813)
geographic Norway
Karasjok
Porsanger
Levajok
Skoganvarre
Skuvvanvarri
geographic_facet Norway
Karasjok
Porsanger
Levajok
Skoganvarre
Skuvvanvarri
genre Finnmark
Karasjok
Lakselv
Porsanger
Finnmark
genre_facet Finnmark
Karasjok
Lakselv
Porsanger
Finnmark
op_source 75-88
op_relation NGU Bulletin (403)
https://hdl.handle.net/11250/2674246
op_rights Navngivelse 4.0 Internasjonal
http://creativecommons.org/licenses/by/4.0/deed.no
op_rightsnorm CC-BY
_version_ 1765999504887119872