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Experimental study of the differentiation of gabbro-syenite melt under superliquidus conditionsстатья
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: 25 ноября 2020 г.
- Авторы: Bezmen N.I., Gorbachev P.N., Seltmann R.
- Журнал: Canadian Mineralogist
- Том: 58
- Номер: 4
- Год издания: 2020
- Издательство: Mineralogical Association of Canada
- Местоположение издательства: Canada
- Первая страница: 445
- Последняя страница: 460
- Номер статьи: 1
- DOI: 10.3749/canmin.1900057
- Аннотация: In this work we present the results of experimental interaction of gabbro-syenite melt, corresponding to the averagecomposition of Northern Timan rocks, with a complex hydrogen-containing fluid. The composition of the magmatic fluid wascontrolled to be close to natural conditions using a special cell in a high gas-pressure vessel. Under superliquidus conditions, theinitial melt exsolves into melts of different composition, forming contrast, cryptic, and rhythmic melt stratifications. Theexperimental results agree with natural data in the petrochemical diagram. It follows from our experimental data that fluidsaturatedmelts in magmatic chambers are completely differentiated in the liquid state. In the absence of temperature gradientsin the magma, gravitational migration of nanoclusters of different densities forms flotation, sedimentation, and rhythmic typesof melt stratification. Transmission electron microscopy of the glasses formed in the cell was used to study the formation ofnanoclusters in a fluid-saturated superliquidus anorthosite-granite model melt. Clusters with a size of 6 nm consist of a pseudocrystallineanorthite core surrounded by fluid-saturated shells of the melt. The migration of fluid and fluid-enriched clusters tothe upper part of the magmatic chamber results in the activation, from bottom to top, of the processes of crystallization in themagma.
- Добавил в систему: Безмен Николай Иванович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | pdf_fail_sJ5vQpv.pdf | pdf_fail_sJ5vQpv.pdf | 1,8 МБ | 7 декабря 2020 [Nikolay_Bezmen] | |
| 2. | pdf_fail.pdf | pdf_fail.pdf | 1,8 МБ | 7 декабря 2020 [Nikolay_Bezmen] | |
| 3. | pdf_fail_4cFxvMb.pdf | pdf_fail_4cFxvMb.pdf | 1,8 МБ | 7 декабря 2020 [Nikolay_Bezmen] |