The generation of magmas in island arcs

J. G. Fitton

doi:10.1016/0012-821X(71)90140-3

The generation of magmas in island arcs

J. G. Fitton

School of Geosciences

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

The partial melting, along appropriate geotherms, of a descending slab of oceanic crust is examined in the light of recent experimental studies. The predicted compositions of magmas generated by this model are concurrent with those observed in island arcs. It is suggested that magmas of the island arc tholeiitic series are produced by reactions involving the breakdown of amphibole at shallow depths. At greater depths partial melting of eclogite will generate calc-alkaline magmas. Between these two extreme types a continuum of transitional magmas could be generated.

Original language	English
Pages (from-to)	63-67
Number of pages	5
Journal	Earth and Planetary Science Letters
Volume	11
Issue number	1-5
DOIs	https://doi.org/10.1016/0012-821X(71)90140-3
Publication status	Published - 1 May 1971

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10.1016/0012-821X(71)90140-3

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title = "The generation of magmas in island arcs",

abstract = "The partial melting, along appropriate geotherms, of a descending slab of oceanic crust is examined in the light of recent experimental studies. The predicted compositions of magmas generated by this model are concurrent with those observed in island arcs. It is suggested that magmas of the island arc tholeiitic series are produced by reactions involving the breakdown of amphibole at shallow depths. At greater depths partial melting of eclogite will generate calc-alkaline magmas. Between these two extreme types a continuum of transitional magmas could be generated.",

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N2 - The partial melting, along appropriate geotherms, of a descending slab of oceanic crust is examined in the light of recent experimental studies. The predicted compositions of magmas generated by this model are concurrent with those observed in island arcs. It is suggested that magmas of the island arc tholeiitic series are produced by reactions involving the breakdown of amphibole at shallow depths. At greater depths partial melting of eclogite will generate calc-alkaline magmas. Between these two extreme types a continuum of transitional magmas could be generated.

AB - The partial melting, along appropriate geotherms, of a descending slab of oceanic crust is examined in the light of recent experimental studies. The predicted compositions of magmas generated by this model are concurrent with those observed in island arcs. It is suggested that magmas of the island arc tholeiitic series are produced by reactions involving the breakdown of amphibole at shallow depths. At greater depths partial melting of eclogite will generate calc-alkaline magmas. Between these two extreme types a continuum of transitional magmas could be generated.

U2 - 10.1016/0012-821X(71)90140-3

DO - 10.1016/0012-821X(71)90140-3

M3 - Article

SN - 0012-821X

VL - 11

SP - 63

EP - 67

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

IS - 1-5

ER -

The generation of magmas in island arcs

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