Carboniferous continental margin mafic-ultramafic sheeted dyke complex in the West Magnitogorsk zone (Southern Urals)
In the West of the aHochthon of Magnitogorsk zone thrusted onto the Precambrian complexes of the Uraltau zone, the Devonian island-arc complexes overlap stratigraphicalry the Ordovician and Silurian chert-basalt sequences and serpentine melange. Melange and Ordovician strata are intruded by dyke swa...
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| Format: | Article |
| Language: | Russian |
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Sergo Ordzhonikidze Russian State University for Geological Prospecting
2019-06-01
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| Series: | Известия высших учебных заведений: Геология и разведка |
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| Online Access: | https://www.geology-mgri.ru/jour/article/view/411 |
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| author | A. V. Ryazantsev L. A. Novikov A. A. Razumovskij |
| author_facet | A. V. Ryazantsev L. A. Novikov A. A. Razumovskij |
| author_sort | A. V. Ryazantsev |
| collection | DOAJ |
| description | In the West of the aHochthon of Magnitogorsk zone thrusted onto the Precambrian complexes of the Uraltau zone, the Devonian island-arc complexes overlap stratigraphicalry the Ordovician and Silurian chert-basalt sequences and serpentine melange. Melange and Ordovician strata are intruded by dyke swarms and sheeted dykes («dyke in dyke») which are composed of mafic and ultramafic rocks. The dykes, composed by gabbro-dolerite, amphibole K-feldspar gabbro, hornblendite, picrite and lamprophyre, predominate. The composition of the ultramafic rocks corresponds to the composition of picrite and komatiite. The 40Ar/39Ar age of the magmatic amphibole from gabbro is 357 ± 8 m.y. The formation of dykes is related to the Early Carboniferous rift-related magmatism on an active continental margin. |
| format | Article |
| id | doaj-art-19bf985bc780492a8bc82d7e70365ab8 |
| institution | DOAJ |
| issn | 0016-7762 2618-8708 |
| language | Russian |
| publishDate | 2019-06-01 |
| publisher | Sergo Ordzhonikidze Russian State University for Geological Prospecting |
| record_format | Article |
| series | Известия высших учебных заведений: Геология и разведка |
| spelling | doaj-art-19bf985bc780492a8bc82d7e70365ab82025-08-20T03:19:12ZrusSergo Ordzhonikidze Russian State University for Geological ProspectingИзвестия высших учебных заведений: Геология и разведка0016-77622618-87082019-06-0103425010.32454/0016-7762-2019-3-42-50373Carboniferous continental margin mafic-ultramafic sheeted dyke complex in the West Magnitogorsk zone (Southern Urals)A. V. Ryazantsev0L. A. Novikov1A. A. Razumovskij2Geological Institute of the Russian Academy of SciencesInstitute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry RAS (IGEM RAS)Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry RAS (IGEM RAS)In the West of the aHochthon of Magnitogorsk zone thrusted onto the Precambrian complexes of the Uraltau zone, the Devonian island-arc complexes overlap stratigraphicalry the Ordovician and Silurian chert-basalt sequences and serpentine melange. Melange and Ordovician strata are intruded by dyke swarms and sheeted dykes («dyke in dyke») which are composed of mafic and ultramafic rocks. The dykes, composed by gabbro-dolerite, amphibole K-feldspar gabbro, hornblendite, picrite and lamprophyre, predominate. The composition of the ultramafic rocks corresponds to the composition of picrite and komatiite. The 40Ar/39Ar age of the magmatic amphibole from gabbro is 357 ± 8 m.y. The formation of dykes is related to the Early Carboniferous rift-related magmatism on an active continental margin.https://www.geology-mgri.ru/jour/article/view/411sheeted dyke complexuralspicritegabbro-doleritelamprophyrehornblenditekomatiitemonzoniteactive continental marginriftingcarboniferous40ar/39ar age |
| spellingShingle | A. V. Ryazantsev L. A. Novikov A. A. Razumovskij Carboniferous continental margin mafic-ultramafic sheeted dyke complex in the West Magnitogorsk zone (Southern Urals) Известия высших учебных заведений: Геология и разведка sheeted dyke complex urals picrite gabbro-dolerite lamprophyre hornblendite komatiite monzonite active continental margin rifting carboniferous 40ar/39ar age |
| title | Carboniferous continental margin mafic-ultramafic sheeted dyke complex in the West Magnitogorsk zone (Southern Urals) |
| title_full | Carboniferous continental margin mafic-ultramafic sheeted dyke complex in the West Magnitogorsk zone (Southern Urals) |
| title_fullStr | Carboniferous continental margin mafic-ultramafic sheeted dyke complex in the West Magnitogorsk zone (Southern Urals) |
| title_full_unstemmed | Carboniferous continental margin mafic-ultramafic sheeted dyke complex in the West Magnitogorsk zone (Southern Urals) |
| title_short | Carboniferous continental margin mafic-ultramafic sheeted dyke complex in the West Magnitogorsk zone (Southern Urals) |
| title_sort | carboniferous continental margin mafic ultramafic sheeted dyke complex in the west magnitogorsk zone southern urals |
| topic | sheeted dyke complex urals picrite gabbro-dolerite lamprophyre hornblendite komatiite monzonite active continental margin rifting carboniferous 40ar/39ar age |
| url | https://www.geology-mgri.ru/jour/article/view/411 |
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