The Mesoproterozoic mantle plume beneath the northern part of the Siberian craton
The study of the Mesoproterozoic (1473 ± 24 Ma) dolerites of the Olenek uplift of the Siberian craton basement has shown their petrologic and geochemical similarity to typical OIB produced with participation of a mantle plume. The dolerites are characterized by variations in the geochemical composit...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Elsevier BV
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/53455 |
| _version_ | 1848759148267700224 |
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| author | Gladkochub, D. Donskaya, T. Mazukabzov, A. Pisarevskiy, Sergei Ernst, R. Stanevich, A. |
| author_facet | Gladkochub, D. Donskaya, T. Mazukabzov, A. Pisarevskiy, Sergei Ernst, R. Stanevich, A. |
| author_sort | Gladkochub, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The study of the Mesoproterozoic (1473 ± 24 Ma) dolerites of the Olenek uplift of the Siberian craton basement has shown their petrologic and geochemical similarity to typical OIB produced with participation of a mantle plume. The dolerites are characterized by variations in the geochemical composition explained by different degrees of melting of the same source. A conclusion is drawn that the parental melts of the rocks were slightly modified by crustal contamination, as evidenced from their Nd isotope composition (£Nd(T) = +0.6 to -0.8) and the presence of inherited zircons of four ages (2564, 2111, 2053, and 1865 Ma). Since the Siberian craton in the structure of the Nuna supercontinent (Columbia) was located relatively close to the Baltic continent and the Congo and Sao Francisco cratons, we assume that the Early Mesoproterozoic mafic intrusions (1500-1470 Ma) of all these cratons belong to the same large igneous province (LIP). The province formation was related to the activity of superplume (or mantle hot field), which supplied mantle matter to the lithosphere basement. The superplume core was probably located beneath the northern part of the Siberian craton, where basites are compositionally most similar to the primary mantle source. |
| first_indexed | 2025-11-14T09:55:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-53455 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:55:16Z |
| publishDate | 2016 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-534552017-10-16T06:39:51Z The Mesoproterozoic mantle plume beneath the northern part of the Siberian craton Gladkochub, D. Donskaya, T. Mazukabzov, A. Pisarevskiy, Sergei Ernst, R. Stanevich, A. The study of the Mesoproterozoic (1473 ± 24 Ma) dolerites of the Olenek uplift of the Siberian craton basement has shown their petrologic and geochemical similarity to typical OIB produced with participation of a mantle plume. The dolerites are characterized by variations in the geochemical composition explained by different degrees of melting of the same source. A conclusion is drawn that the parental melts of the rocks were slightly modified by crustal contamination, as evidenced from their Nd isotope composition (£Nd(T) = +0.6 to -0.8) and the presence of inherited zircons of four ages (2564, 2111, 2053, and 1865 Ma). Since the Siberian craton in the structure of the Nuna supercontinent (Columbia) was located relatively close to the Baltic continent and the Congo and Sao Francisco cratons, we assume that the Early Mesoproterozoic mafic intrusions (1500-1470 Ma) of all these cratons belong to the same large igneous province (LIP). The province formation was related to the activity of superplume (or mantle hot field), which supplied mantle matter to the lithosphere basement. The superplume core was probably located beneath the northern part of the Siberian craton, where basites are compositionally most similar to the primary mantle source. 2016 Journal Article http://hdl.handle.net/20.500.11937/53455 10.1016/j.rgg.2016.04.004 Elsevier BV restricted |
| spellingShingle | Gladkochub, D. Donskaya, T. Mazukabzov, A. Pisarevskiy, Sergei Ernst, R. Stanevich, A. The Mesoproterozoic mantle plume beneath the northern part of the Siberian craton |
| title | The Mesoproterozoic mantle plume beneath the northern part of the Siberian craton |
| title_full | The Mesoproterozoic mantle plume beneath the northern part of the Siberian craton |
| title_fullStr | The Mesoproterozoic mantle plume beneath the northern part of the Siberian craton |
| title_full_unstemmed | The Mesoproterozoic mantle plume beneath the northern part of the Siberian craton |
| title_short | The Mesoproterozoic mantle plume beneath the northern part of the Siberian craton |
| title_sort | mesoproterozoic mantle plume beneath the northern part of the siberian craton |
| url | http://hdl.handle.net/20.500.11937/53455 |