Using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern Siberian craton)
Geological observations and petrological and geochemical criteria are used to detect hybrid rocks at the endocontact of a dolerite dike. The hybrid rocks were produced when the material of a mafic intrusion mixed with a felsic melt. The latter was produced by the melting of the metamorphic rocks mak...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier BV
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/53748 |
| _version_ | 1848759218859933696 |
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| author | Gladkochub, D. Donskaya, T. Wingate, M. Mazukabzov, A. Pisarevskiy, Sergei Kornilova, T. |
| author_facet | Gladkochub, D. Donskaya, T. Wingate, M. Mazukabzov, A. Pisarevskiy, Sergei Kornilova, T. |
| author_sort | Gladkochub, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Geological observations and petrological and geochemical criteria are used to detect hybrid rocks at the endocontact of a dolerite dike. The hybrid rocks were produced when the material of a mafic intrusion mixed with a felsic melt. The latter was produced by the melting of the metamorphic rocks making up the Goloustnaya basement inlier of the Siberian craton, under the thermal effect of the intruded dike. Two age groups of zircon have been identified in the hybrid rock by SHRIMP analysis. The Paleoproterozoic age of inherited zircon (1902, 1864, 1859, and 1855 Ma) reflects the contribution of ancient sources to the hybrid-rock composition. The young, primary-magmatic, zircon grains, produced by melting at the endocontact of the mafic intrusion (494 ± 5 Ma), are coeval with the hybrid rocks, and their age indicates when the mafic rocks intruded the metamorphic framework. Dikes of close age, with similar geochemical characteristics, are present on the vast southern margin of the Siberian craton-from Goloustnaya to Biryusa salients. © 2013. |
| first_indexed | 2025-11-14T09:56:24Z |
| format | Journal Article |
| id | curtin-20.500.11937-53748 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:56:24Z |
| publishDate | 2013 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-537482017-09-13T15:47:19Z Using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern Siberian craton) Gladkochub, D. Donskaya, T. Wingate, M. Mazukabzov, A. Pisarevskiy, Sergei Kornilova, T. Geological observations and petrological and geochemical criteria are used to detect hybrid rocks at the endocontact of a dolerite dike. The hybrid rocks were produced when the material of a mafic intrusion mixed with a felsic melt. The latter was produced by the melting of the metamorphic rocks making up the Goloustnaya basement inlier of the Siberian craton, under the thermal effect of the intruded dike. Two age groups of zircon have been identified in the hybrid rock by SHRIMP analysis. The Paleoproterozoic age of inherited zircon (1902, 1864, 1859, and 1855 Ma) reflects the contribution of ancient sources to the hybrid-rock composition. The young, primary-magmatic, zircon grains, produced by melting at the endocontact of the mafic intrusion (494 ± 5 Ma), are coeval with the hybrid rocks, and their age indicates when the mafic rocks intruded the metamorphic framework. Dikes of close age, with similar geochemical characteristics, are present on the vast southern margin of the Siberian craton-from Goloustnaya to Biryusa salients. © 2013. 2013 Journal Article http://hdl.handle.net/20.500.11937/53748 10.1016/j.rgg.2013.10.001 Elsevier BV restricted |
| spellingShingle | Gladkochub, D. Donskaya, T. Wingate, M. Mazukabzov, A. Pisarevskiy, Sergei Kornilova, T. Using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern Siberian craton) |
| title | Using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern Siberian craton) |
| title_full | Using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern Siberian craton) |
| title_fullStr | Using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern Siberian craton) |
| title_full_unstemmed | Using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern Siberian craton) |
| title_short | Using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern Siberian craton) |
| title_sort | using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern siberian craton) |
| url | http://hdl.handle.net/20.500.11937/53748 |