Location of the Rheic suture in the eastern Bohemian Massif: evidence from detrital zircon data
Three detrital zircon concentrates from the metasediments of the Orlica-Snieznik dome, Bohemian Massif, have been dated using Sensitive High Resolution Ion Microprobe. They yielded Precambrian age spectra similar to those that are characteristic of the Cadomian terranes: (1) Archaean and Palaeoprote...
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| Format: | Journal Article |
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Blackwell Publishing Ltd
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/10785 |
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| author | Mazur, Stanislaw Szczepanski, Jacek Turniak, Krzysztof McNaughton, Neal |
| author_facet | Mazur, Stanislaw Szczepanski, Jacek Turniak, Krzysztof McNaughton, Neal |
| author_sort | Mazur, Stanislaw |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Three detrital zircon concentrates from the metasediments of the Orlica-Snieznik dome, Bohemian Massif, have been dated using Sensitive High Resolution Ion Microprobe. They yielded Precambrian age spectra similar to those that are characteristic of the Cadomian terranes: (1) Archaean and Palaeoproterozoic zircons scattered between 3380 and 1860 Ma, and (2) abundant Neoproterozoic zircons dated at 770–560 Ma. Two of the analysed samples also contain Early Cambrian and Early-Late Cambrian zircons. The estimated maximum sedimentation ages are: 563 ± 6 Ma for the Mlynowiec paragneisses, 532 ± 6 Ma for the Stronie schist and 490 ± 9 Ma for the Goszów quartzite that are interpreted as three distinct metasedimentary successions. They represent a Neoproterozoic back-arc basin, Early Cambrian incipient rift basin and a Lower Ordovician post-rift succession respectively. These successions are the deformed and metamorphosed, allochthonous equivalent to the passive Saxo-Thuringian margin. They were subducted during a Variscan collision and then exhumed in front of the rigid buttress of Brunia/East Avalonia.hree detrital zircon concentrates from the metasediments of the Orlica-Śnieżnik dome, Bohemian Massif, have been dated using Sensitive High Resolution Ion Microprobe. They yielded Precambrian age spectra similar to those that are characteristic of the Cadomian terranes: (1) Archaean and Palaeoproterozoic zircons scattered between 3380 and 1860 Ma, and (2) abundant Neoproterozoic zircons dated at 770–560 Ma. Two of the analysed samples also contain Early Cambrian and Early-Late Cambrian zircons. The estimated maximum sedimentation ages are: 563 ± 6 Ma for the Młynowiec paragneisses, 532 ± 6 Ma for the Stronie schist and 490 ± 9 Ma for the Goszów quartzite that are interpreted as three distinct metasedimentary successions. They represent a Neoproterozoic back-arc basin, Early Cambrian incipient rift basin and a Lower Ordovician post-rift succession respectively. These successions are the deformed and metamorphosed, allochthonous equivalent to the passive Saxo-Thuringian margin. They were subducted during a Variscan collision and then exhumed in front of the rigid buttress of Brunia/East Avalonia. |
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| publishDate | 2012 |
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| spelling | curtin-20.500.11937-107852017-09-13T16:06:41Z Location of the Rheic suture in the eastern Bohemian Massif: evidence from detrital zircon data Mazur, Stanislaw Szczepanski, Jacek Turniak, Krzysztof McNaughton, Neal Three detrital zircon concentrates from the metasediments of the Orlica-Snieznik dome, Bohemian Massif, have been dated using Sensitive High Resolution Ion Microprobe. They yielded Precambrian age spectra similar to those that are characteristic of the Cadomian terranes: (1) Archaean and Palaeoproterozoic zircons scattered between 3380 and 1860 Ma, and (2) abundant Neoproterozoic zircons dated at 770–560 Ma. Two of the analysed samples also contain Early Cambrian and Early-Late Cambrian zircons. The estimated maximum sedimentation ages are: 563 ± 6 Ma for the Mlynowiec paragneisses, 532 ± 6 Ma for the Stronie schist and 490 ± 9 Ma for the Goszów quartzite that are interpreted as three distinct metasedimentary successions. They represent a Neoproterozoic back-arc basin, Early Cambrian incipient rift basin and a Lower Ordovician post-rift succession respectively. These successions are the deformed and metamorphosed, allochthonous equivalent to the passive Saxo-Thuringian margin. They were subducted during a Variscan collision and then exhumed in front of the rigid buttress of Brunia/East Avalonia.hree detrital zircon concentrates from the metasediments of the Orlica-Śnieżnik dome, Bohemian Massif, have been dated using Sensitive High Resolution Ion Microprobe. They yielded Precambrian age spectra similar to those that are characteristic of the Cadomian terranes: (1) Archaean and Palaeoproterozoic zircons scattered between 3380 and 1860 Ma, and (2) abundant Neoproterozoic zircons dated at 770–560 Ma. Two of the analysed samples also contain Early Cambrian and Early-Late Cambrian zircons. The estimated maximum sedimentation ages are: 563 ± 6 Ma for the Młynowiec paragneisses, 532 ± 6 Ma for the Stronie schist and 490 ± 9 Ma for the Goszów quartzite that are interpreted as three distinct metasedimentary successions. They represent a Neoproterozoic back-arc basin, Early Cambrian incipient rift basin and a Lower Ordovician post-rift succession respectively. These successions are the deformed and metamorphosed, allochthonous equivalent to the passive Saxo-Thuringian margin. They were subducted during a Variscan collision and then exhumed in front of the rigid buttress of Brunia/East Avalonia. 2012 Journal Article http://hdl.handle.net/20.500.11937/10785 10.1111/j.1365-3121.2011.01053.x Blackwell Publishing Ltd restricted |
| spellingShingle | Mazur, Stanislaw Szczepanski, Jacek Turniak, Krzysztof McNaughton, Neal Location of the Rheic suture in the eastern Bohemian Massif: evidence from detrital zircon data |
| title | Location of the Rheic suture in the eastern Bohemian Massif: evidence from detrital zircon data |
| title_full | Location of the Rheic suture in the eastern Bohemian Massif: evidence from detrital zircon data |
| title_fullStr | Location of the Rheic suture in the eastern Bohemian Massif: evidence from detrital zircon data |
| title_full_unstemmed | Location of the Rheic suture in the eastern Bohemian Massif: evidence from detrital zircon data |
| title_short | Location of the Rheic suture in the eastern Bohemian Massif: evidence from detrital zircon data |
| title_sort | location of the rheic suture in the eastern bohemian massif: evidence from detrital zircon data |
| url | http://hdl.handle.net/20.500.11937/10785 |