Million-year melt-presence in monotonous intermediate magma for a volcanic-plutonic assemblage in the Central Andes: Contrasting histories of crystal-rich and crystal-poor super-sized silicic magmas
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- 作者：Jason F. Kaisera ; jasonkaiser@suu.edu" class="auth_mail" title="E-mail the corresponding author ; Shanaka de Silvab ; Axel K. Schmittc ; Rita Economosd ; Mayel Sunaguae
- 关键词：magmatic longevity ; zircon chronochemistry ; monotonous intermediates ; caldera-forming eruption ; plutonic clasts ; Central Andes
- 刊名：Earth and Planetary Science Letters
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：457
- 期：Complete
- 页码：73-86
- 全文大小：3772 K
文摘
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We explore the magma conditions of a young (2.89 Ma), volcanic–plutonic assemblage.
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We showcase chronochemical data in 184 zircons at a high spatial resolution.
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We summarize ∼1 Myr of dynamics in a chemically-buffered, dacite magma reservoir.
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This extends our understanding of magma longevity beyond pre-eruptive residence.