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Articles | Volume 9, issue 3
Articles | Volume 9, issue 3
https://doi.org/10.5194/se-9-713-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-9-713-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 9, issue 3
Research article
 | 
05 Jun 2018
Research article |  | 05 Jun 2018

Boninite and boninite-series volcanics in northern Zambales ophiolite: doubly vergent subduction initiation along Philippine Sea plate margins

Americus Perez, Susumu Umino, Graciano P. Yumul Jr., and Osamu Ishizuka

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Short summary
The occurrence of boninite in the northern Zambales ophiolite is reported. Boninite is a relatively rare high-magnesium andesite that is intimately associated with early arc volcanism and the initiation of subduction zones. Taken as a whole, the geological and geochemical characteristics of Zambales and Izu-Ogasawara–Mariana forearc volcanic sequences enables a refined geodynamic reconstruction of subduction initiation.
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