Argon, oxygen, and boron isotopic evidence documenting 40ArE accumulation in phengite during water-rich high-pressure subduction metasomatism of continental crust
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- 作者：Carrie A. Menolda ; c ; cmenold@albion.edu" class="auth_mail" title="E-mail the corresponding author ; Marty Groveb ; Natalie E. Sieversb ; Craig E. Manningc ; An Yinc ; Edward D. Youngc ; Karen Zieglerc ; d
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：15 July 2016
- 年：2016
- 卷：446
- 期：Complete
- 页码：56-67
- 全文大小：2451 K
文摘
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Metasomatic selvages formed at HP conditions in the subduction channel.
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O and B data from the selvage and gneiss indicate far-sourced fluid.
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40ArE content is higher in the phengite-rich selvage than the mafic eclogite.
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Retrograde features are free of 40ArE, indicating 40ArE in phengite was a HP process.
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Phengite Ar/fluid partition coefficients may increase as a function of pressure.