Trace-element study and uranium-lead dating of perovskite from the Afrikanda plutonic complex, Kola Peninsula (Russia) using LA-ICP-MS
The U-Pb geochronology of perovskite is a powerful tool in constraining the emplacement age of silica-undersaturated rocks. The trace-element and U-Pb isotopic compositions of perovskite from clinopyroxenite and silicocarbonatite from the Afrikanda plutonic complex (Kola, Russia) were determined by...
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ftunivtasecite:oai:ecite.utas.edu.au:67879 2023-05-15T17:05:02+02:00 Trace-element study and uranium-lead dating of perovskite from the Afrikanda plutonic complex, Kola Peninsula (Russia) using LA-ICP-MS Reguir, EP Camacho, A Yang, P Chakhmouradian, AR Kamenetsky, VS Halden, NM 2010 https://doi.org/10.1007/s00710-010-0131-9 http://ecite.utas.edu.au/67879 en eng Springer-Verlag Wien http://dx.doi.org/10.1007/s00710-010-0131-9 Reguir, EP and Camacho, A and Yang, P and Chakhmouradian, AR and Kamenetsky, VS and Halden, NM, Trace-element study and uranium-lead dating of perovskite from the Afrikanda plutonic complex, Kola Peninsula (Russia) using LA-ICP-MS, Mineralogy and Petrology, 100, (3-4) pp. 95-103. ISSN 0930-0708 (2010) [Refereed Article] http://ecite.utas.edu.au/67879 Earth Sciences Geology Geochronology Refereed Article PeerReviewed 2010 ftunivtasecite https://doi.org/10.1007/s00710-010-0131-9 2019-12-13T21:36:21Z The U-Pb geochronology of perovskite is a powerful tool in constraining the emplacement age of silica-undersaturated rocks. The trace-element and U-Pb isotopic compositions of perovskite from clinopyroxenite and silicocarbonatite from the Afrikanda plutonic complex (Kola, Russia) were determined by laser-ablation inductively-coupled mass-spectrometry (LA-ICP-MS). In addition, the Sr isotopic composition of perovskite was measured by isotope-dilution mass-spectrometry to better constrain the relations between its host rocks. Perovskite from the two rock types shows a different degree of enrichment in Na, Mg, Mn, Pb, Fe, Al, V, rare-earth elements, Zr, Hf, Th, U and Ta. The perovskite 87Sr/86Sr values are within analytical uncertainty of one another and fall within the range of mantle values. The 206Pb/238U ages (corrected for common lead using 207Pb-method) of perovskite from silicocarbonatite statistically yield a single population with a weighted mean of 371 8 Ma (2; MSWD = 0. 071). This age is indistinguishable, within uncertainty, to the clinopyroxenite weighted mean 206Pb/238U age of 374 10 Ma (2; MSWD = 0. 18). Our data are in good agreement with the previous geochronological study of the Afrikanda complex. The observed variations in trace-element composition of perovskite from silicocarbonatite and clinopyroxenite indicate that these rocks are not related by crystal fractionation. The Sr isotopic ratios and the fact that the two rocks are coeval suggest that they were either produced from a single parental melt by liquid immiscibility, or from two separate magmas derived at different degrees of partial melting from an isotopically equilibrated, but modally complex mantle source. 2010 Springer-Verlag. Article in Journal/Newspaper kola peninsula eCite UTAS (University of Tasmania) Afrikanda ENVELOPE(32.783,32.783,67.443,67.443) Kola Peninsula Mineralogy and Petrology 100 3-4 95 103 |
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Open Polar |
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eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Geology Geochronology |
spellingShingle |
Earth Sciences Geology Geochronology Reguir, EP Camacho, A Yang, P Chakhmouradian, AR Kamenetsky, VS Halden, NM Trace-element study and uranium-lead dating of perovskite from the Afrikanda plutonic complex, Kola Peninsula (Russia) using LA-ICP-MS |
topic_facet |
Earth Sciences Geology Geochronology |
description |
The U-Pb geochronology of perovskite is a powerful tool in constraining the emplacement age of silica-undersaturated rocks. The trace-element and U-Pb isotopic compositions of perovskite from clinopyroxenite and silicocarbonatite from the Afrikanda plutonic complex (Kola, Russia) were determined by laser-ablation inductively-coupled mass-spectrometry (LA-ICP-MS). In addition, the Sr isotopic composition of perovskite was measured by isotope-dilution mass-spectrometry to better constrain the relations between its host rocks. Perovskite from the two rock types shows a different degree of enrichment in Na, Mg, Mn, Pb, Fe, Al, V, rare-earth elements, Zr, Hf, Th, U and Ta. The perovskite 87Sr/86Sr values are within analytical uncertainty of one another and fall within the range of mantle values. The 206Pb/238U ages (corrected for common lead using 207Pb-method) of perovskite from silicocarbonatite statistically yield a single population with a weighted mean of 371 8 Ma (2; MSWD = 0. 071). This age is indistinguishable, within uncertainty, to the clinopyroxenite weighted mean 206Pb/238U age of 374 10 Ma (2; MSWD = 0. 18). Our data are in good agreement with the previous geochronological study of the Afrikanda complex. The observed variations in trace-element composition of perovskite from silicocarbonatite and clinopyroxenite indicate that these rocks are not related by crystal fractionation. The Sr isotopic ratios and the fact that the two rocks are coeval suggest that they were either produced from a single parental melt by liquid immiscibility, or from two separate magmas derived at different degrees of partial melting from an isotopically equilibrated, but modally complex mantle source. 2010 Springer-Verlag. |
format |
Article in Journal/Newspaper |
author |
Reguir, EP Camacho, A Yang, P Chakhmouradian, AR Kamenetsky, VS Halden, NM |
author_facet |
Reguir, EP Camacho, A Yang, P Chakhmouradian, AR Kamenetsky, VS Halden, NM |
author_sort |
Reguir, EP |
title |
Trace-element study and uranium-lead dating of perovskite from the Afrikanda plutonic complex, Kola Peninsula (Russia) using LA-ICP-MS |
title_short |
Trace-element study and uranium-lead dating of perovskite from the Afrikanda plutonic complex, Kola Peninsula (Russia) using LA-ICP-MS |
title_full |
Trace-element study and uranium-lead dating of perovskite from the Afrikanda plutonic complex, Kola Peninsula (Russia) using LA-ICP-MS |
title_fullStr |
Trace-element study and uranium-lead dating of perovskite from the Afrikanda plutonic complex, Kola Peninsula (Russia) using LA-ICP-MS |
title_full_unstemmed |
Trace-element study and uranium-lead dating of perovskite from the Afrikanda plutonic complex, Kola Peninsula (Russia) using LA-ICP-MS |
title_sort |
trace-element study and uranium-lead dating of perovskite from the afrikanda plutonic complex, kola peninsula (russia) using la-icp-ms |
publisher |
Springer-Verlag Wien |
publishDate |
2010 |
url |
https://doi.org/10.1007/s00710-010-0131-9 http://ecite.utas.edu.au/67879 |
long_lat |
ENVELOPE(32.783,32.783,67.443,67.443) |
geographic |
Afrikanda Kola Peninsula |
geographic_facet |
Afrikanda Kola Peninsula |
genre |
kola peninsula |
genre_facet |
kola peninsula |
op_relation |
http://dx.doi.org/10.1007/s00710-010-0131-9 Reguir, EP and Camacho, A and Yang, P and Chakhmouradian, AR and Kamenetsky, VS and Halden, NM, Trace-element study and uranium-lead dating of perovskite from the Afrikanda plutonic complex, Kola Peninsula (Russia) using LA-ICP-MS, Mineralogy and Petrology, 100, (3-4) pp. 95-103. ISSN 0930-0708 (2010) [Refereed Article] http://ecite.utas.edu.au/67879 |
op_doi |
https://doi.org/10.1007/s00710-010-0131-9 |
container_title |
Mineralogy and Petrology |
container_volume |
100 |
container_issue |
3-4 |
container_start_page |
95 |
op_container_end_page |
103 |
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1766059414202089472 |