Geochemical features and age of baddeleyite from carbonatites of the Proterozoic Tiksheozero alkaline–ultramafic pluton, North Karelia
| العنوان: | Geochemical features and age of baddeleyite from carbonatites of the Proterozoic Tiksheozero alkaline–ultramafic pluton, North Karelia |
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| المؤلفون: | A. V. Antonov, N. V. Rodionov, S. G. Simakin, Sergey Sergeev, Boris Belyatsky |
| المصدر: | Doklady Earth Sciences. 464:1039-1043 |
| بيانات النشر: | Pleiades Publishing Ltd, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Proterozoic, Pluton, geology.rock_type, Geochemistry, Baddeleyite, law.invention, Stage (stratigraphy), Ultramafic rock, law, Earth and Planetary Sciences (miscellaneous), Carbonatite, General Earth and Planetary Sciences, Nepheline syenite, Crystallization, Petrology, Geology |
| الوصف: | On the basis of the local composition, baddeleyite grains that were less altered due to interaction with an alkaline melt and corresponded to the primary stage of crystallization of the intrusion were selected from the carbonatite intrusion of the Proterozoic polyphase Tiksheozero alkaline–ultramafic complex. The single age of carbonatite crystallization characterized of the bulk volume of the intrusion was estimated for the first time on the basis of 40 local U–Th–Pb (SHRIMP II) analyses of these grains. The overall concordant age of baddeleyite is 1994.8 ± 9.4 Ma, and the lower age limit of the polyphase complex formation is less than 1998.4 ± 3.5 Ma. |
| تدمد: | 1531-8354 1028-334X |
| DOI: | 10.1134/s1028334x15100086 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::c84b22a9ac35c3263b5df797f4c5d6af https://doi.org/10.1134/s1028334x15100086 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........c84b22a9ac35c3263b5df797f4c5d6af |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15318354 1028334X |
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| DOI: | 10.1134/s1028334x15100086 |