The Paleoproterozoic Nattanen-type granites in northern Finland and vicinity:A postcollisional oxidized A-type suite
The ~1.8 Ga Nattanen-type granites in the Finnish Lapland and western Kola Peninsula are found as several relatively small, high-level, discordant plutons that are easily discernible as weak maxima on aeromagnetic maps. We present U–Pb mineral isotope data on the Finn-ish plutons. The concordia ages...
Published in: | Bulletin of the Geological Society of Finland |
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Online Access: | https://cris.vtt.fi/en/publications/7b599bec-d228-460e-b6f4-45e4057454fb https://doi.org/10.17741/bgsf/81.1.001 |
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ftvttcrispub:oai:cris.vtt.fi:publications/7b599bec-d228-460e-b6f4-45e4057454fb 2024-10-13T14:08:48+00:00 The Paleoproterozoic Nattanen-type granites in northern Finland and vicinity:A postcollisional oxidized A-type suite Heilimo, Esa Halla, Jaana Lauri, Laura, S. Rämö, Tapani Huhma, Hannu Kurhila, Matti, I. Front, Kai 2009 https://cris.vtt.fi/en/publications/7b599bec-d228-460e-b6f4-45e4057454fb https://doi.org/10.17741/bgsf/81.1.001 eng eng info:eu-repo/semantics/openAccess Heilimo , E , Halla , J , Lauri , L S , Rämö , T , Huhma , H , Kurhila , M I & Front , K 2009 , ' The Paleoproterozoic Nattanen-type granites in northern Finland and vicinity : A postcollisional oxidized A-type suite ' , Bulletin of the Geological Society of Finland , vol. 81 , pp. 7-38 . https://doi.org/10.17741/bgsf/81.1.001 granite northern Finland article 2009 ftvttcrispub https://doi.org/10.17741/bgsf/81.1.001 2024-10-02T23:37:25Z The ~1.8 Ga Nattanen-type granites in the Finnish Lapland and western Kola Peninsula are found as several relatively small, high-level, discordant plutons that are easily discernible as weak maxima on aeromagnetic maps. We present U–Pb mineral isotope data on the Finn-ish plutons. The concordia ages are in the 1.79−1.77 Ga range and there is little evidence for inheritance. Initial radiogenic isotope compositions (our common-Pb data combined with previously published whole-rock Nd and Hf data) imply a major, yet varying, Archean source component. Elemental geochemical data on five Finnish intrusions (the Nattanen stock, the Tepasto and Pomovaara complexes, the Riestovaara and Vainospää batholiths), as well as, associated dyke rocks allow the Nattanen-type granites to be classified as oxidized A-type granites. Their petrogenesis may be related to partial melting of the lower crust by mafic underplating (extensional setting) or as a result of thermal relaxation in thickened crustal setting. Article in Journal/Newspaper kola peninsula Northern Finland Lapland VTT's Research Information Portal Finn ENVELOPE(12.739,12.739,65.935,65.935) Kola Peninsula Pomovaara ENVELOPE(26.400,26.400,67.933,67.933) Tepasto ENVELOPE(24.677,24.677,68.002,68.002) Vainospää ENVELOPE(28.849,28.849,69.526,69.526) Bulletin of the Geological Society of Finland 81 1 7 38 |
institution |
Open Polar |
collection |
VTT's Research Information Portal |
op_collection_id |
ftvttcrispub |
language |
English |
topic |
granite northern Finland |
spellingShingle |
granite northern Finland Heilimo, Esa Halla, Jaana Lauri, Laura, S. Rämö, Tapani Huhma, Hannu Kurhila, Matti, I. Front, Kai The Paleoproterozoic Nattanen-type granites in northern Finland and vicinity:A postcollisional oxidized A-type suite |
topic_facet |
granite northern Finland |
description |
The ~1.8 Ga Nattanen-type granites in the Finnish Lapland and western Kola Peninsula are found as several relatively small, high-level, discordant plutons that are easily discernible as weak maxima on aeromagnetic maps. We present U–Pb mineral isotope data on the Finn-ish plutons. The concordia ages are in the 1.79−1.77 Ga range and there is little evidence for inheritance. Initial radiogenic isotope compositions (our common-Pb data combined with previously published whole-rock Nd and Hf data) imply a major, yet varying, Archean source component. Elemental geochemical data on five Finnish intrusions (the Nattanen stock, the Tepasto and Pomovaara complexes, the Riestovaara and Vainospää batholiths), as well as, associated dyke rocks allow the Nattanen-type granites to be classified as oxidized A-type granites. Their petrogenesis may be related to partial melting of the lower crust by mafic underplating (extensional setting) or as a result of thermal relaxation in thickened crustal setting. |
format |
Article in Journal/Newspaper |
author |
Heilimo, Esa Halla, Jaana Lauri, Laura, S. Rämö, Tapani Huhma, Hannu Kurhila, Matti, I. Front, Kai |
author_facet |
Heilimo, Esa Halla, Jaana Lauri, Laura, S. Rämö, Tapani Huhma, Hannu Kurhila, Matti, I. Front, Kai |
author_sort |
Heilimo, Esa |
title |
The Paleoproterozoic Nattanen-type granites in northern Finland and vicinity:A postcollisional oxidized A-type suite |
title_short |
The Paleoproterozoic Nattanen-type granites in northern Finland and vicinity:A postcollisional oxidized A-type suite |
title_full |
The Paleoproterozoic Nattanen-type granites in northern Finland and vicinity:A postcollisional oxidized A-type suite |
title_fullStr |
The Paleoproterozoic Nattanen-type granites in northern Finland and vicinity:A postcollisional oxidized A-type suite |
title_full_unstemmed |
The Paleoproterozoic Nattanen-type granites in northern Finland and vicinity:A postcollisional oxidized A-type suite |
title_sort |
paleoproterozoic nattanen-type granites in northern finland and vicinity:a postcollisional oxidized a-type suite |
publishDate |
2009 |
url |
https://cris.vtt.fi/en/publications/7b599bec-d228-460e-b6f4-45e4057454fb https://doi.org/10.17741/bgsf/81.1.001 |
long_lat |
ENVELOPE(12.739,12.739,65.935,65.935) ENVELOPE(26.400,26.400,67.933,67.933) ENVELOPE(24.677,24.677,68.002,68.002) ENVELOPE(28.849,28.849,69.526,69.526) |
geographic |
Finn Kola Peninsula Pomovaara Tepasto Vainospää |
geographic_facet |
Finn Kola Peninsula Pomovaara Tepasto Vainospää |
genre |
kola peninsula Northern Finland Lapland |
genre_facet |
kola peninsula Northern Finland Lapland |
op_source |
Heilimo , E , Halla , J , Lauri , L S , Rämö , T , Huhma , H , Kurhila , M I & Front , K 2009 , ' The Paleoproterozoic Nattanen-type granites in northern Finland and vicinity : A postcollisional oxidized A-type suite ' , Bulletin of the Geological Society of Finland , vol. 81 , pp. 7-38 . https://doi.org/10.17741/bgsf/81.1.001 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.17741/bgsf/81.1.001 |
container_title |
Bulletin of the Geological Society of Finland |
container_volume |
81 |
container_issue |
1 |
container_start_page |
7 |
op_container_end_page |
38 |
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1812815555203170304 |