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Chemistry and General Typification of Intrusive Rocksстатья
Информация о цитировании статьи получена из
Scopus
Дата последнего поиска статьи во внешних источниках: 4 мая 2020 г.
- Авторы: Bronislav Gongalsky, Nadezhda Krivolutskaya
- Сборник: World-Class Mineral Deposits of Northeastern Transbaikalia, Siberia, Russia
- Серия: Modern Approaches in Solid Earth Sciences
- Том: 17
- Глава в коллективной монографии
- Год издания: 2019
- Место издания: Springer Nature Switzerland AG
- Первая страница: 161
- Последняя страница: 182
- DOI: 10.1007/978-3-030-03559-4_6
- Аннотация: Chemical composition of the Chiney mafic-ultramafic layered intrusion was studied in two main sections and from other rock types in the eastern part. All rocks, except norite, are enriched in Fe and Ti. The MgO and TiO2 variations demonstrate a rhythmic structure of the Chiney pluton. Distribution of rare elements in rocks is similar to the distribution in typical crustal rocks with negative Ta-Nb and positive Pb anomalies. Techniques of geochemical thermometry with the use of the COMAGMAT computer program allowed to estimate the phase and chemical composition of the parental magma. The Chiney magma was represented by differentiated suspension of olivine, plagioclase, and magnetite crystals in ferrobasaltic melt at a temperature of approximately 1130 °C. The gravitational separation of these phases in the melt before its emplacement into the chamber and during the subsequent emplacement of various portions of the initial magma into the modern chamber predetermined the heterogeneity of the pluton.
- Добавил в систему: Гонгальский Бронислав Иосифович