Detrital zircon geochronology of Paleoproterozoic metasedimentary rocks from Jämsä, Central Finland
In this short communication, we present new detrital single grain zircon U-Pb data for six metasedimentary rock samples from Jämsä, Central Finland. Four samples are from the southern parts of the Central Finland granitoid complex and two from metasedimentary rocks mixed with the volcanic belts bord...
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Geological Society of Finland
2025-01-01
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| Series: | Bulletin of the Geological Society of Finland |
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| Online Access: | https://www.geologinenseura.fi/sites/geologinenseura.fi/files/pages_from_bulletin_vol96_part_2_2024_161_170.pdf |
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| author | Perttu Mikkola Matti Kurhila Hannu Huhma |
| author_facet | Perttu Mikkola Matti Kurhila Hannu Huhma |
| author_sort | Perttu Mikkola |
| collection | DOAJ |
| description | In this short communication, we present new detrital single grain zircon U-Pb data for six metasedimentary rock samples from Jämsä, Central Finland. Four samples are from the southern parts of the Central Finland granitoid complex and two from metasedimentary rocks mixed with the volcanic belts bordering it to the south. Based on the obtained results, the detrital zircon populations of all the samples are similar, i.e. they are bimodal with peaks at 2.05–1.95 Ga and 2.90–2.70 Ga. The maximum depositional ages of the individual samples are interpreted as 1.93–1.90 Ga. Thus, the zircon populations are similar to both the Pirkanmaa migmatite belt, which borders the
granitoid complex to the south, and the lowermost members of the volcano-sedimentary Tampere group to the west from our study area. The results further strengthen the similarities between the volcano-sedimentary successions in Tampere and Jämsä areas. Similarities between the detrital zircon populations within, and south of the Central Finland granitoid complex need to be taken into account in further refinements of regional tectonic models. |
| format | Article |
| id | doaj-art-cfaa0819fc3d43f4849b36ebfbdb7032 |
| institution | Kabale University |
| issn | 0367-5211 1799-4632 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Geological Society of Finland |
| record_format | Article |
| series | Bulletin of the Geological Society of Finland |
| spelling | doaj-art-cfaa0819fc3d43f4849b36ebfbdb70322025-01-24T08:53:28ZengGeological Society of FinlandBulletin of the Geological Society of Finland0367-52111799-46322025-01-0196216117010.17741/bgsf/96.2.003Detrital zircon geochronology of Paleoproterozoic metasedimentary rocks from Jämsä, Central FinlandPerttu Mikkola0Matti Kurhila1Hannu Huhma2Geological Survey of Finland, KuopioGeological Survey of Finland, EspooGeological Survey of Finland, EspooIn this short communication, we present new detrital single grain zircon U-Pb data for six metasedimentary rock samples from Jämsä, Central Finland. Four samples are from the southern parts of the Central Finland granitoid complex and two from metasedimentary rocks mixed with the volcanic belts bordering it to the south. Based on the obtained results, the detrital zircon populations of all the samples are similar, i.e. they are bimodal with peaks at 2.05–1.95 Ga and 2.90–2.70 Ga. The maximum depositional ages of the individual samples are interpreted as 1.93–1.90 Ga. Thus, the zircon populations are similar to both the Pirkanmaa migmatite belt, which borders the granitoid complex to the south, and the lowermost members of the volcano-sedimentary Tampere group to the west from our study area. The results further strengthen the similarities between the volcano-sedimentary successions in Tampere and Jämsä areas. Similarities between the detrital zircon populations within, and south of the Central Finland granitoid complex need to be taken into account in further refinements of regional tectonic models.https://www.geologinenseura.fi/sites/geologinenseura.fi/files/pages_from_bulletin_vol96_part_2_2024_161_170.pdffinlandpaleoproterozoicsvecofenniancentral finland granitoid complexzirconu-pbmetasedimentary rocksdeposition age |
| spellingShingle | Perttu Mikkola Matti Kurhila Hannu Huhma Detrital zircon geochronology of Paleoproterozoic metasedimentary rocks from Jämsä, Central Finland Bulletin of the Geological Society of Finland finland paleoproterozoic svecofennian central finland granitoid complex zircon u-pb metasedimentary rocks deposition age |
| title | Detrital zircon geochronology of Paleoproterozoic metasedimentary rocks from Jämsä, Central Finland |
| title_full | Detrital zircon geochronology of Paleoproterozoic metasedimentary rocks from Jämsä, Central Finland |
| title_fullStr | Detrital zircon geochronology of Paleoproterozoic metasedimentary rocks from Jämsä, Central Finland |
| title_full_unstemmed | Detrital zircon geochronology of Paleoproterozoic metasedimentary rocks from Jämsä, Central Finland |
| title_short | Detrital zircon geochronology of Paleoproterozoic metasedimentary rocks from Jämsä, Central Finland |
| title_sort | detrital zircon geochronology of paleoproterozoic metasedimentary rocks from jamsa central finland |
| topic | finland paleoproterozoic svecofennian central finland granitoid complex zircon u-pb metasedimentary rocks deposition age |
| url | https://www.geologinenseura.fi/sites/geologinenseura.fi/files/pages_from_bulletin_vol96_part_2_2024_161_170.pdf |
| work_keys_str_mv | AT perttumikkola detritalzircongeochronologyofpaleoproterozoicmetasedimentaryrocksfromjamsacentralfinland AT mattikurhila detritalzircongeochronologyofpaleoproterozoicmetasedimentaryrocksfromjamsacentralfinland AT hannuhuhma detritalzircongeochronologyofpaleoproterozoicmetasedimentaryrocksfromjamsacentralfinland |