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High-Mg adakites from Kadavu Island Group, Fiji, southwest Pacific: Evidence for the mantle origin of adakite parental meltsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Danyushevsky Leonid V., Falloon Trevor J., Crawford Anthony J., Tetroeva Sofia A., Leslie Roman L., Verbeeten Alicia
- Журнал: Geology
- Том: 36
- Номер: 6
- Год издания: 2008
- Издательство: Geological Society of America
- Местоположение издательства: United States
- Первая страница: 499
- Последняя страница: 502
- DOI: 10.1130/G24349A.1
- Аннотация: We report here the compositions of primitive high-Mg adakite lavas from the Kadavu Island Group, Fiji. Two distinctive high-Mg adakite compositions are present on Kadavu, and both are strongly enriched in Sr and La, with high Sr[Y (>120) and La[Yb (>30) values. The east Kadavu high-Mg adakite is relatively enriched in K2O and depleted in TiO2 and Nb. Our results from Kadavu suggest that there is an adakite magma series that is the result of complex open-system magmatic processes, including magma mixing between relatively low SiO2 mantle-derived melts of high-Mg adakite composition and high SiO2, low-Mg adakite magma. The results from Kadavu Island suggest that adakite magma suites worldwide are likely to include primitive high-Mg compositions, despite the lack of field evidence in many cases.
- Добавил в систему: Тетроева Софья Ансаровна