Early Ediacaran Magmatism in the Yenisei Ridge and Evolution of the Southwestern Margin of the Siberian Craton
We present the first comprehensive data for the early Ediacaran stage of evolution of the western active continental margin of the Siberian Craton (Yenisei Ridge). U-Pb (SHRIMP-II SIMS) data for zircons from dikes of picrodolerites, quartz diorites, and leucocratic granites show that they were empla...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
MDPI
2020
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| Online Access: | http://hdl.handle.net/20.500.11937/90611 |
| _version_ | 1848765401906806784 |
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| author | Vernikovskaya, A. Vernikovsky, V.A. Matushkin, N. Kadilnikov, P. Metelkin, D.V. Romanova, I. Li, Zheng-Xiang Bogdanov, E. |
| author_facet | Vernikovskaya, A. Vernikovsky, V.A. Matushkin, N. Kadilnikov, P. Metelkin, D.V. Romanova, I. Li, Zheng-Xiang Bogdanov, E. |
| author_sort | Vernikovskaya, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present the first comprehensive data for the early Ediacaran stage of evolution of the western active continental margin of the Siberian Craton (Yenisei Ridge). U-Pb (SHRIMP-II SIMS) data for zircons from dikes of picrodolerites, quartz diorites, and leucocratic granites show that they were emplaced at 625 ± 5, 623 ± 8, and 626 ± 5 Ma, respectively, which indicates a narrow time window of Ediacaran magmatic events. The mafic tholeiitic rocks have OIB and E-MORB mantle components in their magmatic sources. Mineralogical and geochemical observations showed that the mantle-sourced mafic melts assimilated some crustal material, forming Th-enriched dikes of intermediate composition and K-and Rb-enriched felsic rocks. The possible geodynamic conditions for the formation of these early Ediacaran dikes are shown and a geodynamic model is presented for the development of the Yenisei Ridge orogen from the late Cryogenian to the late Ediacaran. |
| first_indexed | 2025-11-14T11:34:40Z |
| format | Journal Article |
| id | curtin-20.500.11937-90611 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:34:40Z |
| publishDate | 2020 |
| publisher | MDPI |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-906112023-03-23T03:20:17Z Early Ediacaran Magmatism in the Yenisei Ridge and Evolution of the Southwestern Margin of the Siberian Craton Vernikovskaya, A. Vernikovsky, V.A. Matushkin, N. Kadilnikov, P. Metelkin, D.V. Romanova, I. Li, Zheng-Xiang Bogdanov, E. Science & Technology Physical Sciences Geochemistry & Geophysics Mineralogy Mining & Mineral Processing Siberian Craton Yenisei Ridge dikes magmatism U-Pb and Ar-Ar geochronology continental margin Ediacaran WESTERN MARGIN ALKALINE MAGMATISM PB GRANITOIDS NOMENCLATURE ACCRETIONARY ASSOCIATION INDICATORS RODINIA COMPLEX We present the first comprehensive data for the early Ediacaran stage of evolution of the western active continental margin of the Siberian Craton (Yenisei Ridge). U-Pb (SHRIMP-II SIMS) data for zircons from dikes of picrodolerites, quartz diorites, and leucocratic granites show that they were emplaced at 625 ± 5, 623 ± 8, and 626 ± 5 Ma, respectively, which indicates a narrow time window of Ediacaran magmatic events. The mafic tholeiitic rocks have OIB and E-MORB mantle components in their magmatic sources. Mineralogical and geochemical observations showed that the mantle-sourced mafic melts assimilated some crustal material, forming Th-enriched dikes of intermediate composition and K-and Rb-enriched felsic rocks. The possible geodynamic conditions for the formation of these early Ediacaran dikes are shown and a geodynamic model is presented for the development of the Yenisei Ridge orogen from the late Cryogenian to the late Ediacaran. 2020 Journal Article http://hdl.handle.net/20.500.11937/90611 10.3390/min10060565 English http://creativecommons.org/licenses/by/4.0/ MDPI fulltext |
| spellingShingle | Science & Technology Physical Sciences Geochemistry & Geophysics Mineralogy Mining & Mineral Processing Siberian Craton Yenisei Ridge dikes magmatism U-Pb and Ar-Ar geochronology continental margin Ediacaran WESTERN MARGIN ALKALINE MAGMATISM PB GRANITOIDS NOMENCLATURE ACCRETIONARY ASSOCIATION INDICATORS RODINIA COMPLEX Vernikovskaya, A. Vernikovsky, V.A. Matushkin, N. Kadilnikov, P. Metelkin, D.V. Romanova, I. Li, Zheng-Xiang Bogdanov, E. Early Ediacaran Magmatism in the Yenisei Ridge and Evolution of the Southwestern Margin of the Siberian Craton |
| title | Early Ediacaran Magmatism in the Yenisei Ridge and Evolution of the Southwestern Margin of the Siberian Craton |
| title_full | Early Ediacaran Magmatism in the Yenisei Ridge and Evolution of the Southwestern Margin of the Siberian Craton |
| title_fullStr | Early Ediacaran Magmatism in the Yenisei Ridge and Evolution of the Southwestern Margin of the Siberian Craton |
| title_full_unstemmed | Early Ediacaran Magmatism in the Yenisei Ridge and Evolution of the Southwestern Margin of the Siberian Craton |
| title_short | Early Ediacaran Magmatism in the Yenisei Ridge and Evolution of the Southwestern Margin of the Siberian Craton |
| title_sort | early ediacaran magmatism in the yenisei ridge and evolution of the southwestern margin of the siberian craton |
| topic | Science & Technology Physical Sciences Geochemistry & Geophysics Mineralogy Mining & Mineral Processing Siberian Craton Yenisei Ridge dikes magmatism U-Pb and Ar-Ar geochronology continental margin Ediacaran WESTERN MARGIN ALKALINE MAGMATISM PB GRANITOIDS NOMENCLATURE ACCRETIONARY ASSOCIATION INDICATORS RODINIA COMPLEX |
| url | http://hdl.handle.net/20.500.11937/90611 |