| Инд. авторы: | Simonov V.A., Kontorovich V.A., Stupakov S.I., Filippov Y.F., Saraev S.V., Kotlyarov A.V. |
| Заглавие: | Setting of the Formation of Paleozoic Picrite Basalt Complexes in the West Siberian Plate Basement |
| Библ. ссылка: | Simonov V.A., Kontorovich V.A., Stupakov S.I., Filippov Y.F., Saraev S.V., Kotlyarov A.V. Setting of the Formation of Paleozoic Picrite Basalt Complexes in the West Siberian Plate Basement // Doklady Earth Sciences. - 2019. - Vol.486. - Iss. 2. - P.613-616. - ISSN 1028-334X. - EISSN 1531-8354. |
| Внешние системы: | DOI: 10.1134/S1028334X19060217; РИНЦ: 41624665; SCOPUS: 2-s2.0-85070218798; WoS: 000479089000006; |
| Реферат: | eng: Ar-40/Ar-39 analysis showed a simultaneous (at about 490 Ma) formation of the Paleozoic picrite and basalt complexes of the West Siberian Plate basement. The petrochemistry, trace and REE geochemistry, and composition of clinopyroxene indicate the formation of the picrite of well no. 11 (Chkalov area) as a result of intraplate magmatism of the OIB type. Calculations based on the compositions of clinopyroxene allowed crystallization of minerals of porphyric picrite at 1215-1275 degrees C and 4.5-8 kbar. In general, it has been found that the picrite basalt complexes considered were formed from enriched igneous plume systems under intraplate conditions near the active margin of the ancient ocean.
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| Ключевые слова: | Paleozoic; Magmatisms; Basalt; Active margins; Buildings; Clinopyroxenes; REE geochemistry; |
| Издано: | 2019 |
| Физ. характеристика: | с.613-616 |