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The magmatic H2O pathway of ascending arc magmas recorded by Ca-in-olivine hygrometry: advantages, complications, and perspectivesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 октября 2025 г.
- Авторы: Gavrilenko Maxim, Ruprecht Philipp, Krawczynski Michael
- Журнал: Contributions to Mineralogy and Petrology
- Том: 180
- Номер: 9
- Год издания: 2025
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- Номер статьи: 54
- DOI: 10.1007/s00410-025-02246-0
- Аннотация: The Ca-in-olivine geohygrometer, first calibrated in 2016 (Gavrilenko et al. J Petrol, 57(9):1811–1832, 2016a), has since been widely applied to diverse datasets, providing significant insights into magmatic H2O contents. Building on extensive experience with this method, this study reviews the application of this petrological tool, summarizing its key features, strengths, and limitations. Using a large dataset of olivine-hosted melt inclusions (MIs) from Klyuchevskoy volcano, we highlight the method's advantages and challenges, propose strategies for optimizing its use, and suggest potential improvements for Ca-in-olivine hygrometry. Applying the Ca-in-olivine geohygrometer to extensive MI datasets for a given arc volcano can reveal the H2O content variation during this magma evolution, showing magmatic H2O accumulation at greater depth due to incompatible H2O behavior, and then a degassing trend at shallow depth when H2O saturation is reached. While effective for evolved compositions (Fo < ~ 85), the method underestimates magmatic H2O content in primitive compositions (Fo > ~ 85). Based on the 1-atm and high-pressure experiments with Klyuchevskoy compositions, combined with secondary fluorescence modeling around olivine-hosted MIs, we suggest that refining current Ca partitioning models (olivine/melt) and routinely measuring CaO in host olivine for reported MIs can improve the method's accuracy and broaden its applicability in magmatic studies. These findings aim to enhance the accuracy and applicability of this technique in studying magmatic processes.
- Добавил в систему: Гавриленко Максим Георгиевич
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