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Cited by 178

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Phlogopite and K‐amphibole in the upper mantle: Implication for magma genesis in subduction zones

Sudo, Akira, Tatsumi, Yoshiyuki·1990·Geophysical Research Letters

Abstract

High‐pressure phase relations have been examined for phlogopite + diopside with and without enstatite under vapor absent conditions in the pressure range of 5 to 13 GPa and in the temperature range of 1000 to 1300°C. Phlogopite in these systems can be stable up to 6–7 GPa and decomposes through pressure‐dependent reactions to crystallize phases including potassic amphibole. The experimental results suggest that phlogopite, which is one of main hydrous phases in the downdragged hydrated peridotite at the base of mantle wedge, plays an important role in the formation of magmas at the backarc side of a volcanic arc. The existence of potassic amphibole at higher pressure regions may imply the involvement of subduction component in magma generation in the region far away from the trench axis.

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Metadata

Authors
Sudo, A., & Tatsumi, Y.
Venue
Geophysical Research Letters
Published
1990-01
Volume
17
Issue
1
Pages
29-32
ISSN
  • 0094-8276 (ISSN-L)
  • 1944-8007
OpenAlex
W1965658370
Cited by
178
References
1
FWCI
7.64
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Phlogopite and K‐amphibole in the upper mantle: Implication for magma genesis in subduction zones. https://app.cochat.ai/papers/10.1029/gl017i001p00029
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Sudo, A., & Tatsumi, Y. (1990). Phlogopite and K‐amphibole in the upper mantle: Implication for magma genesis in subduction zones. Geophysical Research Letters. https://doi.org/10.1029/gl017i001p00029

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