Zircon trace element fingerprint of changing tectonic regimes in Permian rhyolites from the Central European Lowlands
The late Carboniferous/early Permian post-collisional rhyolites (305–285 Ma) that formed in Central Europe have generally similar whole rock compositions to that of older Late-Variscan rhyolites (330–310 Ma). However, data compilation combining zircon age with the chemical composition of rhyolites f...
Published in: | International Journal of Earth Sciences |
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2024
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5025846 2024-06-23T07:54:06+00:00 Zircon trace element fingerprint of changing tectonic regimes in Permian rhyolites from the Central European Lowlands Słodczyk, E. Pietranik, A. Repstock, A. Przybyło, A. Glynn, S. Lukács, R. 2024 application/pdf https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025846 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025846_1/component/file_5025921/5025846.pdf eng eng info:eu-repo/semantics/altIdentifier/doi/10.1007/s00531-024-02419-5 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025846 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025846_1/component/file_5025921/5025846.pdf info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ International Journal of Earth Sciences info:eu-repo/semantics/article 2024 ftgfzpotsdam https://doi.org/10.1007/s00531-024-02419-5 2024-05-29T00:03:34Z The late Carboniferous/early Permian post-collisional rhyolites (305–285 Ma) that formed in Central Europe have generally similar whole rock compositions to that of older Late-Variscan rhyolites (330–310 Ma). However, data compilation combining zircon age with the chemical composition of rhyolites from 20 units shows a trend of increasing zircon saturation temperature with decreasing age. This trend is particularly well identified in rhyolites from the Central European Lowlands (CEL)—consisting of the NE German and NW Polish Basin—and also correlates their location with the zircon saturation temperature increasing from SE to NW from 750°C to 850°C. We infer that these higher temperatures of zircon saturation reflect a contemporaneous change in the tectonic setting from collisional to divergent, reflecting the onset of the Central European continental rifting. This interpretation is further corroborated by the trace element compositions of the CEL zircons, which resembles zircon crystallized in a divergent setting. Interestingly, the zircon formed globally in this type of setting is chemically diverse, especially considering uranium concentration. For example, zircon from locations dominated by mafic magma fractionation, such as rhyolites from Iceland, have low U concentrations and low U/Yb ratios. On the other hand, zircon formed in rhyolites in rifted margins, like western North America, tends to have much higher U and U/Yb ratios. Such high concentrations are not observed in zircon from the CEL, suggesting that the mantle input could be higher and residence times within continental crust shorter than those for rhyolites from the Cenozoic western USA. This may, in turn, suggest that the region might have been affected by a hot spot, similar to that responsible for rhyolite formation of the Snake River Plain. Article in Journal/Newspaper Iceland GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) International Journal of Earth Sciences 113 4 779 795 |
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Open Polar |
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GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
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ftgfzpotsdam |
language |
English |
description |
The late Carboniferous/early Permian post-collisional rhyolites (305–285 Ma) that formed in Central Europe have generally similar whole rock compositions to that of older Late-Variscan rhyolites (330–310 Ma). However, data compilation combining zircon age with the chemical composition of rhyolites from 20 units shows a trend of increasing zircon saturation temperature with decreasing age. This trend is particularly well identified in rhyolites from the Central European Lowlands (CEL)—consisting of the NE German and NW Polish Basin—and also correlates their location with the zircon saturation temperature increasing from SE to NW from 750°C to 850°C. We infer that these higher temperatures of zircon saturation reflect a contemporaneous change in the tectonic setting from collisional to divergent, reflecting the onset of the Central European continental rifting. This interpretation is further corroborated by the trace element compositions of the CEL zircons, which resembles zircon crystallized in a divergent setting. Interestingly, the zircon formed globally in this type of setting is chemically diverse, especially considering uranium concentration. For example, zircon from locations dominated by mafic magma fractionation, such as rhyolites from Iceland, have low U concentrations and low U/Yb ratios. On the other hand, zircon formed in rhyolites in rifted margins, like western North America, tends to have much higher U and U/Yb ratios. Such high concentrations are not observed in zircon from the CEL, suggesting that the mantle input could be higher and residence times within continental crust shorter than those for rhyolites from the Cenozoic western USA. This may, in turn, suggest that the region might have been affected by a hot spot, similar to that responsible for rhyolite formation of the Snake River Plain. |
format |
Article in Journal/Newspaper |
author |
Słodczyk, E. Pietranik, A. Repstock, A. Przybyło, A. Glynn, S. Lukács, R. |
spellingShingle |
Słodczyk, E. Pietranik, A. Repstock, A. Przybyło, A. Glynn, S. Lukács, R. Zircon trace element fingerprint of changing tectonic regimes in Permian rhyolites from the Central European Lowlands |
author_facet |
Słodczyk, E. Pietranik, A. Repstock, A. Przybyło, A. Glynn, S. Lukács, R. |
author_sort |
Słodczyk, E. |
title |
Zircon trace element fingerprint of changing tectonic regimes in Permian rhyolites from the Central European Lowlands |
title_short |
Zircon trace element fingerprint of changing tectonic regimes in Permian rhyolites from the Central European Lowlands |
title_full |
Zircon trace element fingerprint of changing tectonic regimes in Permian rhyolites from the Central European Lowlands |
title_fullStr |
Zircon trace element fingerprint of changing tectonic regimes in Permian rhyolites from the Central European Lowlands |
title_full_unstemmed |
Zircon trace element fingerprint of changing tectonic regimes in Permian rhyolites from the Central European Lowlands |
title_sort |
zircon trace element fingerprint of changing tectonic regimes in permian rhyolites from the central european lowlands |
publishDate |
2024 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025846 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025846_1/component/file_5025921/5025846.pdf |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
International Journal of Earth Sciences |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00531-024-02419-5 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025846 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025846_1/component/file_5025921/5025846.pdf |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1007/s00531-024-02419-5 |
container_title |
International Journal of Earth Sciences |
container_volume |
113 |
container_issue |
4 |
container_start_page |
779 |
op_container_end_page |
795 |
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1802646069096480768 |